./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-54.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-54.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 0cf2f240a207b9fd94ff47176fc66686eff0a1305e9376e15a89fac66684ae53 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 11:42:14,099 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 11:42:14,159 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 11:42:14,162 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 11:42:14,164 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 11:42:14,180 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 11:42:14,181 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 11:42:14,181 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 11:42:14,182 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 11:42:14,182 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 11:42:14,182 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 11:42:14,182 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 11:42:14,183 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 11:42:14,183 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 11:42:14,183 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 11:42:14,183 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 11:42:14,184 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 11:42:14,184 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 11:42:14,184 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 11:42:14,185 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 11:42:14,185 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 11:42:14,185 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 11:42:14,186 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 11:42:14,186 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 11:42:14,186 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 11:42:14,186 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 11:42:14,187 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 11:42:14,187 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 11:42:14,187 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 11:42:14,187 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 11:42:14,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 11:42:14,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 11:42:14,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:42:14,188 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 11:42:14,189 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 11:42:14,189 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 11:42:14,189 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 11:42:14,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 11:42:14,190 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 11:42:14,190 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 11:42:14,190 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 11:42:14,190 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 11:42:14,191 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cf2f240a207b9fd94ff47176fc66686eff0a1305e9376e15a89fac66684ae53 [2024-11-22 11:42:14,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 11:42:14,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 11:42:14,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 11:42:14,503 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 11:42:14,507 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 11:42:14,508 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-54.i [2024-11-22 11:42:15,739 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 11:42:15,948 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 11:42:15,948 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-54.i [2024-11-22 11:42:15,958 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d034c5a69/faac6083945540caa4a4d6976feda757/FLAGa9e402fbc [2024-11-22 11:42:15,969 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d034c5a69/faac6083945540caa4a4d6976feda757 [2024-11-22 11:42:15,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 11:42:15,972 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 11:42:15,974 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 11:42:15,974 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 11:42:15,978 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 11:42:15,978 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:42:15" (1/1) ... [2024-11-22 11:42:15,979 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8016785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:15, skipping insertion in model container [2024-11-22 11:42:15,979 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:42:15" (1/1) ... [2024-11-22 11:42:16,016 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 11:42:16,173 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-54.i[916,929] [2024-11-22 11:42:16,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:42:16,333 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 11:42:16,342 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-54.i[916,929] [2024-11-22 11:42:16,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:42:16,445 INFO L204 MainTranslator]: Completed translation [2024-11-22 11:42:16,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:16 WrapperNode [2024-11-22 11:42:16,446 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 11:42:16,447 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 11:42:16,447 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 11:42:16,447 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 11:42:16,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:16" (1/1) ... [2024-11-22 11:42:16,472 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:16" (1/1) ... [2024-11-22 11:42:16,530 INFO L138 Inliner]: procedures = 26, calls = 79, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 417 [2024-11-22 11:42:16,531 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 11:42:16,531 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 11:42:16,531 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 11:42:16,531 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 11:42:16,540 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:16" (1/1) ... [2024-11-22 11:42:16,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:16" (1/1) ... [2024-11-22 11:42:16,547 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:16" (1/1) ... [2024-11-22 11:42:16,583 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 11:42:16,584 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:16" (1/1) ... [2024-11-22 11:42:16,584 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:16" (1/1) ... [2024-11-22 11:42:16,604 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:16" (1/1) ... [2024-11-22 11:42:16,607 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:16" (1/1) ... [2024-11-22 11:42:16,613 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:16" (1/1) ... [2024-11-22 11:42:16,617 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:16" (1/1) ... [2024-11-22 11:42:16,623 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 11:42:16,624 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 11:42:16,625 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 11:42:16,625 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 11:42:16,625 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:16" (1/1) ... [2024-11-22 11:42:16,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:42:16,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:42:16,655 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 11:42:16,667 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 11:42:16,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 11:42:16,703 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 11:42:16,703 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 11:42:16,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 11:42:16,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 11:42:16,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 11:42:16,846 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 11:42:16,851 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 11:42:17,551 INFO L? ?]: Removed 38 outVars from TransFormulas that were not future-live. [2024-11-22 11:42:17,551 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 11:42:17,572 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 11:42:17,572 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 11:42:17,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:42:17 BoogieIcfgContainer [2024-11-22 11:42:17,573 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 11:42:17,574 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 11:42:17,574 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 11:42:17,578 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 11:42:17,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:42:15" (1/3) ... [2024-11-22 11:42:17,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6592c334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:42:17, skipping insertion in model container [2024-11-22 11:42:17,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:16" (2/3) ... [2024-11-22 11:42:17,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6592c334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:42:17, skipping insertion in model container [2024-11-22 11:42:17,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:42:17" (3/3) ... [2024-11-22 11:42:17,582 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-54.i [2024-11-22 11:42:17,630 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 11:42:17,631 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 11:42:17,698 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 11:42:17,705 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;@adb137f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 11:42:17,706 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 11:42:17,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 113 states have (on average 1.4955752212389382) internal successors, (169), 114 states have internal predecessors, (169), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-22 11:42:17,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-11-22 11:42:17,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:42:17,745 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:17,745 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:42:17,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:42:17,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1620481780, now seen corresponding path program 1 times [2024-11-22 11:42:17,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:42:17,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670903815] [2024-11-22 11:42:17,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:17,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:42:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:18,185 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 8450 trivial. 0 not checked. [2024-11-22 11:42:18,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:42:18,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670903815] [2024-11-22 11:42:18,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670903815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:42:18,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461239452] [2024-11-22 11:42:18,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:18,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:42:18,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:42:18,191 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 11:42:18,192 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 11:42:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:18,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 11:42:18,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:42:18,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 8450 trivial. 0 not checked. [2024-11-22 11:42:18,557 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:42:18,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461239452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:42:18,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:42:18,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 11:42:18,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912529143] [2024-11-22 11:42:18,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:42:18,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 11:42:18,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:42:18,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 11:42:18,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:42:18,604 INFO L87 Difference]: Start difference. First operand has 182 states, 113 states have (on average 1.4955752212389382) internal successors, (169), 114 states have internal predecessors, (169), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Second operand has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) [2024-11-22 11:42:18,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:42:18,709 INFO L93 Difference]: Finished difference Result 357 states and 662 transitions. [2024-11-22 11:42:18,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 11:42:18,711 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) Word has length 403 [2024-11-22 11:42:18,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:42:18,724 INFO L225 Difference]: With dead ends: 357 [2024-11-22 11:42:18,725 INFO L226 Difference]: Without dead ends: 178 [2024-11-22 11:42:18,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 404 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 11:42:18,737 INFO L432 NwaCegarLoop]: 293 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, 293 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 11:42:18,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:42:18,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-22 11:42:18,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2024-11-22 11:42:18,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 110 states have (on average 1.4636363636363636) internal successors, (161), 110 states have internal predecessors, (161), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-22 11:42:18,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 293 transitions. [2024-11-22 11:42:18,835 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 293 transitions. Word has length 403 [2024-11-22 11:42:18,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:42:18,839 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 293 transitions. [2024-11-22 11:42:18,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) [2024-11-22 11:42:18,840 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 293 transitions. [2024-11-22 11:42:18,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-11-22 11:42:18,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:42:18,860 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:18,878 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 11:42:19,061 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 11:42:19,065 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:42:19,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:42:19,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1025857852, now seen corresponding path program 1 times [2024-11-22 11:42:19,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:42:19,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998814055] [2024-11-22 11:42:19,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:19,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:42:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:19,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2024-11-22 11:42:19,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:42:19,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998814055] [2024-11-22 11:42:19,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998814055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:42:19,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:42:19,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:42:19,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557869438] [2024-11-22 11:42:19,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:42:19,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:42:19,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:42:19,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:42:19,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:42:19,430 INFO L87 Difference]: Start difference. First operand 178 states and 293 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2024-11-22 11:42:19,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:42:19,528 INFO L93 Difference]: Finished difference Result 436 states and 718 transitions. [2024-11-22 11:42:19,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:42:19,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 403 [2024-11-22 11:42:19,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:42:19,536 INFO L225 Difference]: With dead ends: 436 [2024-11-22 11:42:19,536 INFO L226 Difference]: Without dead ends: 261 [2024-11-22 11:42:19,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:42:19,540 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 135 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:42:19,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 574 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:42:19,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-22 11:42:19,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 258. [2024-11-22 11:42:19,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 175 states have (on average 1.497142857142857) internal successors, (262), 176 states have internal predecessors, (262), 80 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 79 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-22 11:42:19,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 422 transitions. [2024-11-22 11:42:19,593 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 422 transitions. Word has length 403 [2024-11-22 11:42:19,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:42:19,596 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 422 transitions. [2024-11-22 11:42:19,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2024-11-22 11:42:19,596 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 422 transitions. [2024-11-22 11:42:19,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-22 11:42:19,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:42:19,603 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:19,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 11:42:19,604 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:42:19,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:42:19,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2117375696, now seen corresponding path program 1 times [2024-11-22 11:42:19,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:42:19,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891536881] [2024-11-22 11:42:19,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:19,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:42:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:21,262 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 6 proven. 189 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2024-11-22 11:42:21,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:42:21,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891536881] [2024-11-22 11:42:21,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891536881] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:42:21,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618779874] [2024-11-22 11:42:21,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:21,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:42:21,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:42:21,267 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 11:42:21,268 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 11:42:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:21,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 11:42:21,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:42:22,162 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 573 proven. 189 refuted. 0 times theorem prover too weak. 7818 trivial. 0 not checked. [2024-11-22 11:42:22,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:42:22,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 6 proven. 189 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2024-11-22 11:42:22,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618779874] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:42:22,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:42:22,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-22 11:42:22,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340089342] [2024-11-22 11:42:22,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:42:22,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 11:42:22,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:42:22,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 11:42:22,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-22 11:42:22,626 INFO L87 Difference]: Start difference. First operand 258 states and 422 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 3 states have call successors, (192), 2 states have call predecessors, (192), 4 states have return successors, (193), 3 states have call predecessors, (193), 3 states have call successors, (193) [2024-11-22 11:42:22,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:42:22,982 INFO L93 Difference]: Finished difference Result 525 states and 851 transitions. [2024-11-22 11:42:22,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 11:42:22,982 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 3 states have call successors, (192), 2 states have call predecessors, (192), 4 states have return successors, (193), 3 states have call predecessors, (193), 3 states have call successors, (193) Word has length 404 [2024-11-22 11:42:22,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:42:22,986 INFO L225 Difference]: With dead ends: 525 [2024-11-22 11:42:22,986 INFO L226 Difference]: Without dead ends: 270 [2024-11-22 11:42:22,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 805 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-22 11:42:22,988 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 330 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 11:42:22,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 463 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 11:42:22,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-22 11:42:23,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 266. [2024-11-22 11:42:23,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 181 states have (on average 1.4364640883977902) internal successors, (260), 182 states have internal predecessors, (260), 80 states have call successors, (80), 4 states have call predecessors, (80), 4 states have return successors, (80), 79 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-22 11:42:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 420 transitions. [2024-11-22 11:42:23,009 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 420 transitions. Word has length 404 [2024-11-22 11:42:23,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:42:23,010 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 420 transitions. [2024-11-22 11:42:23,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 3 states have call successors, (192), 2 states have call predecessors, (192), 4 states have return successors, (193), 3 states have call predecessors, (193), 3 states have call successors, (193) [2024-11-22 11:42:23,010 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 420 transitions. [2024-11-22 11:42:23,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-22 11:42:23,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:42:23,014 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:23,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 11:42:23,215 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,SelfDestructingSolverStorable2 [2024-11-22 11:42:23,217 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:42:23,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:42:23,217 INFO L85 PathProgramCache]: Analyzing trace with hash -400105180, now seen corresponding path program 1 times [2024-11-22 11:42:23,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:42:23,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094783230] [2024-11-22 11:42:23,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:23,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:42:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:25,446 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 150 proven. 234 refuted. 0 times theorem prover too weak. 8196 trivial. 0 not checked. [2024-11-22 11:42:25,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:42:25,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094783230] [2024-11-22 11:42:25,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094783230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:42:25,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876860353] [2024-11-22 11:42:25,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:25,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:42:25,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:42:25,450 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 11:42:25,462 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 11:42:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:25,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 11:42:25,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:42:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 2006 proven. 342 refuted. 0 times theorem prover too weak. 6232 trivial. 0 not checked. [2024-11-22 11:42:26,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:42:28,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 42 proven. 345 refuted. 0 times theorem prover too weak. 8193 trivial. 0 not checked. [2024-11-22 11:42:28,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876860353] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:42:28,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:42:28,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 21 [2024-11-22 11:42:28,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650994657] [2024-11-22 11:42:28,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:42:28,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-22 11:42:28,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:42:28,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-22 11:42:28,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2024-11-22 11:42:28,111 INFO L87 Difference]: Start difference. First operand 266 states and 420 transitions. Second operand has 21 states, 21 states have (on average 9.714285714285714) internal successors, (204), 21 states have internal predecessors, (204), 7 states have call successors, (184), 3 states have call predecessors, (184), 7 states have return successors, (186), 7 states have call predecessors, (186), 7 states have call successors, (186) [2024-11-22 11:42:31,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:42:31,443 INFO L93 Difference]: Finished difference Result 744 states and 1147 transitions. [2024-11-22 11:42:31,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-22 11:42:31,444 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.714285714285714) internal successors, (204), 21 states have internal predecessors, (204), 7 states have call successors, (184), 3 states have call predecessors, (184), 7 states have return successors, (186), 7 states have call predecessors, (186), 7 states have call successors, (186) Word has length 405 [2024-11-22 11:42:31,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:42:31,450 INFO L225 Difference]: With dead ends: 744 [2024-11-22 11:42:31,450 INFO L226 Difference]: Without dead ends: 481 [2024-11-22 11:42:31,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 851 GetRequests, 803 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=626, Invalid=1824, Unknown=0, NotChecked=0, Total=2450 [2024-11-22 11:42:31,452 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 1275 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 1912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-22 11:42:31,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 1255 Invalid, 1912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 1621 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-22 11:42:31,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-11-22 11:42:31,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 403. [2024-11-22 11:42:31,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 300 states have (on average 1.4166666666666667) internal successors, (425), 303 states have internal predecessors, (425), 88 states have call successors, (88), 14 states have call predecessors, (88), 14 states have return successors, (88), 85 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-22 11:42:31,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 601 transitions. [2024-11-22 11:42:31,515 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 601 transitions. Word has length 405 [2024-11-22 11:42:31,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:42:31,517 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 601 transitions. [2024-11-22 11:42:31,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.714285714285714) internal successors, (204), 21 states have internal predecessors, (204), 7 states have call successors, (184), 3 states have call predecessors, (184), 7 states have return successors, (186), 7 states have call predecessors, (186), 7 states have call successors, (186) [2024-11-22 11:42:31,517 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 601 transitions. [2024-11-22 11:42:31,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-22 11:42:31,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:42:31,521 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:31,533 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 11:42:31,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:42:31,725 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:42:31,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:42:31,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1642551972, now seen corresponding path program 1 times [2024-11-22 11:42:31,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:42:31,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615945534] [2024-11-22 11:42:31,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:31,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:42:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:34,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 492 proven. 252 refuted. 0 times theorem prover too weak. 7836 trivial. 0 not checked. [2024-11-22 11:42:34,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:42:34,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615945534] [2024-11-22 11:42:34,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615945534] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:42:34,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056882722] [2024-11-22 11:42:34,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:34,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:42:34,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:42:34,495 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 11:42:34,499 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 11:42:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:34,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-22 11:42:34,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:42:37,070 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 5527 proven. 333 refuted. 0 times theorem prover too weak. 2720 trivial. 0 not checked. [2024-11-22 11:42:37,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:42:39,889 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 429 proven. 147 refuted. 0 times theorem prover too weak. 8004 trivial. 0 not checked. [2024-11-22 11:42:39,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056882722] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:42:39,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:42:39,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 12] total 31 [2024-11-22 11:42:39,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309325046] [2024-11-22 11:42:39,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:42:39,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-22 11:42:39,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:42:39,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-22 11:42:39,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=699, Unknown=0, NotChecked=0, Total=930 [2024-11-22 11:42:39,895 INFO L87 Difference]: Start difference. First operand 403 states and 601 transitions. Second operand has 31 states, 30 states have (on average 5.9) internal successors, (177), 28 states have internal predecessors, (177), 11 states have call successors, (144), 6 states have call predecessors, (144), 12 states have return successors, (145), 11 states have call predecessors, (145), 11 states have call successors, (145) [2024-11-22 11:42:47,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:42:47,031 INFO L93 Difference]: Finished difference Result 1432 states and 2059 transitions. [2024-11-22 11:42:47,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-11-22 11:42:47,032 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 5.9) internal successors, (177), 28 states have internal predecessors, (177), 11 states have call successors, (144), 6 states have call predecessors, (144), 12 states have return successors, (145), 11 states have call predecessors, (145), 11 states have call successors, (145) Word has length 405 [2024-11-22 11:42:47,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:42:47,041 INFO L225 Difference]: With dead ends: 1432 [2024-11-22 11:42:47,042 INFO L226 Difference]: Without dead ends: 1032 [2024-11-22 11:42:47,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 919 GetRequests, 801 SyntacticMatches, 7 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4700 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2946, Invalid=9710, Unknown=0, NotChecked=0, Total=12656 [2024-11-22 11:42:47,046 INFO L432 NwaCegarLoop]: 283 mSDtfsCounter, 1580 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 1936 mSolverCounterSat, 1126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 3062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1126 IncrementalHoareTripleChecker+Valid, 1936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:42:47,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 1659 Invalid, 3062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1126 Valid, 1936 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-22 11:42:47,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2024-11-22 11:42:47,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 950. [2024-11-22 11:42:47,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 630 states have (on average 1.2968253968253969) internal successors, (817), 636 states have internal predecessors, (817), 264 states have call successors, (264), 55 states have call predecessors, (264), 55 states have return successors, (264), 258 states have call predecessors, (264), 264 states have call successors, (264) [2024-11-22 11:42:47,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1345 transitions. [2024-11-22 11:42:47,159 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1345 transitions. Word has length 405 [2024-11-22 11:42:47,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:42:47,160 INFO L471 AbstractCegarLoop]: Abstraction has 950 states and 1345 transitions. [2024-11-22 11:42:47,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 5.9) internal successors, (177), 28 states have internal predecessors, (177), 11 states have call successors, (144), 6 states have call predecessors, (144), 12 states have return successors, (145), 11 states have call predecessors, (145), 11 states have call successors, (145) [2024-11-22 11:42:47,161 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1345 transitions. [2024-11-22 11:42:47,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-22 11:42:47,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:42:47,174 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:47,186 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 11:42:47,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:42:47,378 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:42:47,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:42:47,379 INFO L85 PathProgramCache]: Analyzing trace with hash 244513188, now seen corresponding path program 1 times [2024-11-22 11:42:47,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:42:47,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937417628] [2024-11-22 11:42:47,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:47,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:42:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:51,455 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 264 proven. 303 refuted. 0 times theorem prover too weak. 8013 trivial. 0 not checked. [2024-11-22 11:42:51,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:42:51,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937417628] [2024-11-22 11:42:51,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937417628] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:42:51,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697128333] [2024-11-22 11:42:51,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:51,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:42:51,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:42:51,458 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 11:42:51,459 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 11:42:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:51,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-22 11:42:51,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:42:53,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 5018 proven. 327 refuted. 0 times theorem prover too weak. 3235 trivial. 0 not checked. [2024-11-22 11:42:53,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:42:54,667 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 417 proven. 345 refuted. 0 times theorem prover too weak. 7818 trivial. 0 not checked. [2024-11-22 11:42:54,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697128333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:42:54,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:42:54,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 39 [2024-11-22 11:42:54,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591177228] [2024-11-22 11:42:54,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:42:54,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-22 11:42:54,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:42:54,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-22 11:42:54,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1239, Unknown=0, NotChecked=0, Total=1482 [2024-11-22 11:42:54,672 INFO L87 Difference]: Start difference. First operand 950 states and 1345 transitions. Second operand has 39 states, 39 states have (on average 5.153846153846154) internal successors, (201), 38 states have internal predecessors, (201), 14 states have call successors, (171), 5 states have call predecessors, (171), 12 states have return successors, (172), 14 states have call predecessors, (172), 14 states have call successors, (172) [2024-11-22 11:43:06,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:06,362 INFO L93 Difference]: Finished difference Result 4304 states and 6089 transitions. [2024-11-22 11:43:06,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2024-11-22 11:43:06,364 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.153846153846154) internal successors, (201), 38 states have internal predecessors, (201), 14 states have call successors, (171), 5 states have call predecessors, (171), 12 states have return successors, (172), 14 states have call predecessors, (172), 14 states have call successors, (172) Word has length 405 [2024-11-22 11:43:06,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:06,384 INFO L225 Difference]: With dead ends: 4304 [2024-11-22 11:43:06,384 INFO L226 Difference]: Without dead ends: 3409 [2024-11-22 11:43:06,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 998 GetRequests, 812 SyntacticMatches, 1 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13534 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=6300, Invalid=28482, Unknown=0, NotChecked=0, Total=34782 [2024-11-22 11:43:06,399 INFO L432 NwaCegarLoop]: 448 mSDtfsCounter, 2466 mSDsluCounter, 5251 mSDsCounter, 0 mSdLazyCounter, 5253 mSolverCounterSat, 1944 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2492 SdHoareTripleChecker+Valid, 5699 SdHoareTripleChecker+Invalid, 7197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1944 IncrementalHoareTripleChecker+Valid, 5253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:06,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2492 Valid, 5699 Invalid, 7197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1944 Valid, 5253 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-22 11:43:06,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3409 states. [2024-11-22 11:43:06,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3409 to 1906. [2024-11-22 11:43:06,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1906 states, 1275 states have (on average 1.2854901960784313) internal successors, (1639), 1286 states have internal predecessors, (1639), 504 states have call successors, (504), 126 states have call predecessors, (504), 126 states have return successors, (504), 493 states have call predecessors, (504), 504 states have call successors, (504) [2024-11-22 11:43:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2647 transitions. [2024-11-22 11:43:06,778 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2647 transitions. Word has length 405 [2024-11-22 11:43:06,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:06,779 INFO L471 AbstractCegarLoop]: Abstraction has 1906 states and 2647 transitions. [2024-11-22 11:43:06,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.153846153846154) internal successors, (201), 38 states have internal predecessors, (201), 14 states have call successors, (171), 5 states have call predecessors, (171), 12 states have return successors, (172), 14 states have call predecessors, (172), 14 states have call successors, (172) [2024-11-22 11:43:06,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2647 transitions. [2024-11-22 11:43:06,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2024-11-22 11:43:06,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:06,782 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:43:06,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 11:43:06,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:43:06,986 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:06,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:06,986 INFO L85 PathProgramCache]: Analyzing trace with hash -391419604, now seen corresponding path program 1 times [2024-11-22 11:43:06,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:06,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53635028] [2024-11-22 11:43:06,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:06,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 252 proven. 132 refuted. 0 times theorem prover too weak. 8196 trivial. 0 not checked. [2024-11-22 11:43:08,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:08,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53635028] [2024-11-22 11:43:08,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53635028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:43:08,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066422173] [2024-11-22 11:43:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:08,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:43:08,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:43:08,500 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:43:08,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 11:43:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:08,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-22 11:43:08,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:43:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 5329 proven. 339 refuted. 0 times theorem prover too weak. 2912 trivial. 0 not checked. [2024-11-22 11:43:10,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:43:11,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066422173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:43:11,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 11:43:11,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 20] total 24 [2024-11-22 11:43:11,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269362248] [2024-11-22 11:43:11,291 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 11:43:11,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-22 11:43:11,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:11,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-22 11:43:11,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2024-11-22 11:43:11,294 INFO L87 Difference]: Start difference. First operand 1906 states and 2647 transitions. Second operand has 24 states, 24 states have (on average 5.958333333333333) internal successors, (143), 23 states have internal predecessors, (143), 7 states have call successors, (105), 6 states have call predecessors, (105), 9 states have return successors, (105), 7 states have call predecessors, (105), 7 states have call successors, (105) [2024-11-22 11:43:13,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:13,590 INFO L93 Difference]: Finished difference Result 4673 states and 6463 transitions. [2024-11-22 11:43:13,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-22 11:43:13,593 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.958333333333333) internal successors, (143), 23 states have internal predecessors, (143), 7 states have call successors, (105), 6 states have call predecessors, (105), 9 states have return successors, (105), 7 states have call predecessors, (105), 7 states have call successors, (105) Word has length 406 [2024-11-22 11:43:13,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:13,607 INFO L225 Difference]: With dead ends: 4673 [2024-11-22 11:43:13,609 INFO L226 Difference]: Without dead ends: 2830 [2024-11-22 11:43:13,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 433 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=425, Invalid=1297, Unknown=0, NotChecked=0, Total=1722 [2024-11-22 11:43:13,615 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 693 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 2076 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 2364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 2076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:13,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1476 Invalid, 2364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 2076 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-22 11:43:13,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2830 states. [2024-11-22 11:43:13,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2830 to 2666. [2024-11-22 11:43:13,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2666 states, 1843 states have (on average 1.3125339120998372) internal successors, (2419), 1862 states have internal predecessors, (2419), 656 states have call successors, (656), 166 states have call predecessors, (656), 166 states have return successors, (656), 637 states have call predecessors, (656), 656 states have call successors, (656) [2024-11-22 11:43:13,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 3731 transitions. [2024-11-22 11:43:13,944 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 3731 transitions. Word has length 406 [2024-11-22 11:43:13,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:13,948 INFO L471 AbstractCegarLoop]: Abstraction has 2666 states and 3731 transitions. [2024-11-22 11:43:13,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.958333333333333) internal successors, (143), 23 states have internal predecessors, (143), 7 states have call successors, (105), 6 states have call predecessors, (105), 9 states have return successors, (105), 7 states have call predecessors, (105), 7 states have call successors, (105) [2024-11-22 11:43:13,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 3731 transitions. [2024-11-22 11:43:13,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2024-11-22 11:43:13,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:13,951 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:43:13,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 11:43:14,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:43:14,152 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:14,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:14,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1209068054, now seen corresponding path program 1 times [2024-11-22 11:43:14,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:14,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579504861] [2024-11-22 11:43:14,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:14,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 11:43:14,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157224558] [2024-11-22 11:43:14,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:14,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:43:14,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:43:14,827 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:43:14,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 11:43:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:15,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-22 11:43:15,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:43:18,434 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 2169 proven. 927 refuted. 0 times theorem prover too weak. 5484 trivial. 0 not checked. [2024-11-22 11:43:18,434 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:43:19,745 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 30 proven. 165 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2024-11-22 11:43:19,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:19,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579504861] [2024-11-22 11:43:19,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 11:43:19,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157224558] [2024-11-22 11:43:19,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157224558] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:43:19,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 11:43:19,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 10] total 29 [2024-11-22 11:43:19,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109363207] [2024-11-22 11:43:19,749 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 11:43:19,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-22 11:43:19,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:19,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-22 11:43:19,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2024-11-22 11:43:19,753 INFO L87 Difference]: Start difference. First operand 2666 states and 3731 transitions. Second operand has 29 states, 29 states have (on average 5.413793103448276) internal successors, (157), 27 states have internal predecessors, (157), 7 states have call successors, (132), 6 states have call predecessors, (132), 10 states have return successors, (132), 7 states have call predecessors, (132), 7 states have call successors, (132) [2024-11-22 11:43:26,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:26,222 INFO L93 Difference]: Finished difference Result 6834 states and 9572 transitions. [2024-11-22 11:43:26,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-22 11:43:26,223 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.413793103448276) internal successors, (157), 27 states have internal predecessors, (157), 7 states have call successors, (132), 6 states have call predecessors, (132), 10 states have return successors, (132), 7 states have call predecessors, (132), 7 states have call successors, (132) Word has length 406 [2024-11-22 11:43:26,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:26,240 INFO L225 Difference]: With dead ends: 6834 [2024-11-22 11:43:26,240 INFO L226 Difference]: Without dead ends: 4223 [2024-11-22 11:43:26,246 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 839 GetRequests, 785 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=742, Invalid=2338, Unknown=0, NotChecked=0, Total=3080 [2024-11-22 11:43:26,247 INFO L432 NwaCegarLoop]: 365 mSDtfsCounter, 1226 mSDsluCounter, 3865 mSDsCounter, 0 mSdLazyCounter, 3239 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 4230 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 3239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:26,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 4230 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 3239 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-22 11:43:26,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4223 states. [2024-11-22 11:43:27,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4223 to 3421. [2024-11-22 11:43:27,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3421 states, 2580 states have (on average 1.3496124031007752) internal successors, (3482), 2611 states have internal predecessors, (3482), 626 states have call successors, (626), 214 states have call predecessors, (626), 214 states have return successors, (626), 595 states have call predecessors, (626), 626 states have call successors, (626) [2024-11-22 11:43:27,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3421 states to 3421 states and 4734 transitions. [2024-11-22 11:43:27,046 INFO L78 Accepts]: Start accepts. Automaton has 3421 states and 4734 transitions. Word has length 406 [2024-11-22 11:43:27,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:27,047 INFO L471 AbstractCegarLoop]: Abstraction has 3421 states and 4734 transitions. [2024-11-22 11:43:27,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.413793103448276) internal successors, (157), 27 states have internal predecessors, (157), 7 states have call successors, (132), 6 states have call predecessors, (132), 10 states have return successors, (132), 7 states have call predecessors, (132), 7 states have call successors, (132) [2024-11-22 11:43:27,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3421 states and 4734 transitions. [2024-11-22 11:43:27,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2024-11-22 11:43:27,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:27,051 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:43:27,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 11:43:27,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:43:27,256 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:27,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:27,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1046462972, now seen corresponding path program 1 times [2024-11-22 11:43:27,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:27,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931551509] [2024-11-22 11:43:27,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:27,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 11:43:27,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228590420] [2024-11-22 11:43:27,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:27,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:43:27,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:43:27,754 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:43:27,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 11:43:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:28,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 11:43:28,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:43:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 4333 proven. 405 refuted. 0 times theorem prover too weak. 3842 trivial. 0 not checked. [2024-11-22 11:43:30,375 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:43:34,646 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (mod c_~var_1_26~0 256)) (.cse1 (mod c_~last_1_var_1_61~0 4294967296)) (.cse3 (mod c_~var_1_22~0 4294967296))) (and (forall ((v_y_173 Int) (v_z_175 Int)) (let ((.cse2 (* v_y_173 4294967296)) (.cse0 (div v_z_175 .cse4))) (or (< .cse0 (+ .cse1 .cse2)) (< 255 v_z_175) (< (+ 4294967295 .cse2) .cse0) (< v_z_175 .cse3)))) (or (< (div .cse3 .cse4) (+ (* 4294967296 (div .cse3 .cse4 4294967296)) .cse1)) (< .cse3 1)))) is different from false [2024-11-22 11:43:35,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:35,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931551509] [2024-11-22 11:43:35,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 11:43:35,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228590420] [2024-11-22 11:43:35,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228590420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:43:35,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:43:35,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-22 11:43:35,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409868896] [2024-11-22 11:43:35,203 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 11:43:35,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 11:43:35,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:35,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 11:43:35,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=158, Unknown=1, NotChecked=26, Total=240 [2024-11-22 11:43:35,208 INFO L87 Difference]: Start difference. First operand 3421 states and 4734 transitions. Second operand has 14 states, 14 states have (on average 6.785714285714286) internal successors, (95), 12 states have internal predecessors, (95), 4 states have call successors, (66), 4 states have call predecessors, (66), 6 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66)