./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.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 11fbe230916924754384b4d5f209e2f8e8933dc585a70287035d014e0032f60d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:41:23,992 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:41:24,069 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:41:24,074 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:41:24,074 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:41:24,108 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:41:24,109 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:41:24,109 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:41:24,110 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:41:24,114 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:41:24,114 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:41:24,114 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:41:24,115 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:41:24,115 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:41:24,116 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:41:24,116 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:41:24,116 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:41:24,116 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:41:24,117 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:41:24,117 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:41:24,118 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:41:24,119 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:41:24,119 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:41:24,120 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:41:24,120 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:41:24,120 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:41:24,120 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:41:24,121 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:41:24,121 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:41:24,121 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:41:24,121 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:41:24,122 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:41:24,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:41:24,122 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:41:24,122 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:41:24,122 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:41:24,123 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:41:24,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:41:24,123 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:41:24,123 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:41:24,123 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:41:24,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:41:24,124 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11fbe230916924754384b4d5f209e2f8e8933dc585a70287035d014e0032f60d [2024-11-18 23:41:24,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:41:24,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:41:24,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:41:24,413 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:41:24,414 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:41:24,416 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.i [2024-11-18 23:41:25,949 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:41:26,188 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:41:26,190 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.i [2024-11-18 23:41:26,209 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95f101f5e/7b5baebc9084418e9c10a971a76cddda/FLAGb8e132b38 [2024-11-18 23:41:26,224 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95f101f5e/7b5baebc9084418e9c10a971a76cddda [2024-11-18 23:41:26,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:41:26,227 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:41:26,228 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:41:26,228 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:41:26,234 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:41:26,234 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:41:26" (1/1) ... [2024-11-18 23:41:26,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1053262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:26, skipping insertion in model container [2024-11-18 23:41:26,235 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:41:26" (1/1) ... [2024-11-18 23:41:26,285 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:41:26,478 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-24.i[916,929] [2024-11-18 23:41:26,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:41:26,677 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:41:26,691 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-24.i[916,929] [2024-11-18 23:41:26,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:41:26,828 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:41:26,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:26 WrapperNode [2024-11-18 23:41:26,829 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:41:26,830 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:41:26,831 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:41:26,831 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:41:26,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:26" (1/1) ... [2024-11-18 23:41:26,869 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:26" (1/1) ... [2024-11-18 23:41:26,918 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 432 [2024-11-18 23:41:26,919 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:41:26,920 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:41:26,920 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:41:26,920 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:41:26,932 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:26" (1/1) ... [2024-11-18 23:41:26,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:26" (1/1) ... [2024-11-18 23:41:26,941 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:26" (1/1) ... [2024-11-18 23:41:26,975 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]. [2024-11-18 23:41:26,975 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:26" (1/1) ... [2024-11-18 23:41:26,975 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:26" (1/1) ... [2024-11-18 23:41:26,998 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:26" (1/1) ... [2024-11-18 23:41:27,007 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:26" (1/1) ... [2024-11-18 23:41:27,015 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:26" (1/1) ... [2024-11-18 23:41:27,025 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:26" (1/1) ... [2024-11-18 23:41:27,034 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:41:27,037 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:41:27,037 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:41:27,037 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:41:27,038 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:26" (1/1) ... [2024-11-18 23:41:27,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:41:27,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:41:27,077 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) [2024-11-18 23:41:27,085 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 [2024-11-18 23:41:27,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:41:27,137 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:41:27,138 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:41:27,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:41:27,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:41:27,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:41:27,271 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:41:27,273 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:41:28,203 INFO L? ?]: Removed 63 outVars from TransFormulas that were not future-live. [2024-11-18 23:41:28,203 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:41:28,229 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:41:28,229 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:41:28,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:41:28 BoogieIcfgContainer [2024-11-18 23:41:28,230 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:41:28,234 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:41:28,234 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:41:28,239 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:41:28,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:41:26" (1/3) ... [2024-11-18 23:41:28,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f38f00b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:41:28, skipping insertion in model container [2024-11-18 23:41:28,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:26" (2/3) ... [2024-11-18 23:41:28,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f38f00b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:41:28, skipping insertion in model container [2024-11-18 23:41:28,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:41:28" (3/3) ... [2024-11-18 23:41:28,245 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-24.i [2024-11-18 23:41:28,262 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:41:28,262 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:41:28,335 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:41:28,345 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;@2078e3e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:41:28,345 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:41:28,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 135 states have (on average 1.5185185185185186) internal successors, (205), 136 states have internal predecessors, (205), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-18 23:41:28,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-11-18 23:41:28,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:41:28,384 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:41:28,385 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:41:28,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:41:28,393 INFO L85 PathProgramCache]: Analyzing trace with hash 999308583, now seen corresponding path program 1 times [2024-11-18 23:41:28,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:41:28,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572969648] [2024-11-18 23:41:28,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:41:28,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:41:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:41:29,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 23:41:29,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:41:29,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572969648] [2024-11-18 23:41:29,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572969648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:41:29,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:41:29,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:41:29,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385982598] [2024-11-18 23:41:29,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:41:29,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:41:29,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:41:29,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:41:29,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:41:29,484 INFO L87 Difference]: Start difference. First operand has 182 states, 135 states have (on average 1.5185185185185186) internal successors, (205), 136 states have internal predecessors, (205), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 23:41:29,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:41:29,872 INFO L93 Difference]: Finished difference Result 533 states and 958 transitions. [2024-11-18 23:41:29,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:41:29,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 298 [2024-11-18 23:41:29,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:41:29,902 INFO L225 Difference]: With dead ends: 533 [2024-11-18 23:41:29,902 INFO L226 Difference]: Without dead ends: 354 [2024-11-18 23:41:29,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:41:29,916 INFO L432 NwaCegarLoop]: 281 mSDtfsCounter, 219 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:41:29,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 827 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:41:29,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-18 23:41:30,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 263. [2024-11-18 23:41:30,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 172 states have (on average 1.4127906976744187) internal successors, (243), 172 states have internal predecessors, (243), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-18 23:41:30,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 419 transitions. [2024-11-18 23:41:30,044 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 419 transitions. Word has length 298 [2024-11-18 23:41:30,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:41:30,048 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 419 transitions. [2024-11-18 23:41:30,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 23:41:30,049 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 419 transitions. [2024-11-18 23:41:30,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-18 23:41:30,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:41:30,061 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:41:30,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 23:41:30,062 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:41:30,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:41:30,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1950101936, now seen corresponding path program 1 times [2024-11-18 23:41:30,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:41:30,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540533479] [2024-11-18 23:41:30,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:41:30,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:41:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:41:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 23:41:30,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:41:30,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540533479] [2024-11-18 23:41:30,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540533479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:41:30,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:41:30,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:41:30,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747413965] [2024-11-18 23:41:30,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:41:30,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:41:30,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:41:30,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:41:30,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:41:30,364 INFO L87 Difference]: Start difference. First operand 263 states and 419 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 23:41:30,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:41:30,535 INFO L93 Difference]: Finished difference Result 597 states and 955 transitions. [2024-11-18 23:41:30,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:41:30,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 299 [2024-11-18 23:41:30,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:41:30,543 INFO L225 Difference]: With dead ends: 597 [2024-11-18 23:41:30,545 INFO L226 Difference]: Without dead ends: 422 [2024-11-18 23:41:30,547 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 [2024-11-18 23:41:30,551 INFO L432 NwaCegarLoop]: 437 mSDtfsCounter, 250 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:41:30,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 676 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:41:30,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-18 23:41:30,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 318. [2024-11-18 23:41:30,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 227 states have (on average 1.4361233480176212) internal successors, (326), 227 states have internal predecessors, (326), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-18 23:41:30,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 502 transitions. [2024-11-18 23:41:30,612 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 502 transitions. Word has length 299 [2024-11-18 23:41:30,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:41:30,613 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 502 transitions. [2024-11-18 23:41:30,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 23:41:30,614 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 502 transitions. [2024-11-18 23:41:30,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-18 23:41:30,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:41:30,623 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:41:30,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:41:30,625 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:41:30,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:41:30,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1250126474, now seen corresponding path program 1 times [2024-11-18 23:41:30,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:41:30,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198382820] [2024-11-18 23:41:30,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:41:30,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:41:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:41:30,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 23:41:30,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:41:30,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198382820] [2024-11-18 23:41:30,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198382820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:41:30,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:41:30,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:41:30,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656955162] [2024-11-18 23:41:30,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:41:30,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:41:30,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:41:30,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:41:30,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:41:30,847 INFO L87 Difference]: Start difference. First operand 318 states and 502 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 23:41:30,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:41:30,960 INFO L93 Difference]: Finished difference Result 652 states and 1028 transitions. [2024-11-18 23:41:30,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:41:30,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 299 [2024-11-18 23:41:30,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:41:30,965 INFO L225 Difference]: With dead ends: 652 [2024-11-18 23:41:30,969 INFO L226 Difference]: Without dead ends: 422 [2024-11-18 23:41:30,970 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 [2024-11-18 23:41:30,971 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 248 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:41:30,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 500 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:41:30,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-18 23:41:31,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 318. [2024-11-18 23:41:31,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 227 states have (on average 1.3920704845814977) internal successors, (316), 227 states have internal predecessors, (316), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-18 23:41:31,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 492 transitions. [2024-11-18 23:41:31,021 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 492 transitions. Word has length 299 [2024-11-18 23:41:31,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:41:31,022 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 492 transitions. [2024-11-18 23:41:31,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 23:41:31,024 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 492 transitions. [2024-11-18 23:41:31,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-18 23:41:31,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:41:31,028 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:41:31,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:41:31,028 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:41:31,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:41:31,029 INFO L85 PathProgramCache]: Analyzing trace with hash 103102257, now seen corresponding path program 1 times [2024-11-18 23:41:31,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:41:31,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076328438] [2024-11-18 23:41:31,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:41:31,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:41:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:41:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 23:41:31,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:41:31,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076328438] [2024-11-18 23:41:31,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076328438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:41:31,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:41:31,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:41:31,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556858787] [2024-11-18 23:41:31,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:41:31,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:41:31,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:41:31,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:41:31,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:41:31,401 INFO L87 Difference]: Start difference. First operand 318 states and 492 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 23:41:31,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:41:31,470 INFO L93 Difference]: Finished difference Result 779 states and 1205 transitions. [2024-11-18 23:41:31,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:41:31,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 300 [2024-11-18 23:41:31,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:41:31,476 INFO L225 Difference]: With dead ends: 779 [2024-11-18 23:41:31,477 INFO L226 Difference]: Without dead ends: 549 [2024-11-18 23:41:31,480 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 [2024-11-18 23:41:31,481 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 187 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:41:31,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 535 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:41:31,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-11-18 23:41:31,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 545. [2024-11-18 23:41:31,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 409 states have (on average 1.41320293398533) internal successors, (578), 409 states have internal predecessors, (578), 132 states have call successors, (132), 3 states have call predecessors, (132), 3 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2024-11-18 23:41:31,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 842 transitions. [2024-11-18 23:41:31,539 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 842 transitions. Word has length 300 [2024-11-18 23:41:31,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:41:31,543 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 842 transitions. [2024-11-18 23:41:31,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 23:41:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 842 transitions. [2024-11-18 23:41:31,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-18 23:41:31,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:41:31,549 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:41:31,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:41:31,550 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:41:31,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:41:31,551 INFO L85 PathProgramCache]: Analyzing trace with hash -2140881041, now seen corresponding path program 1 times [2024-11-18 23:41:31,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:41:31,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275842186] [2024-11-18 23:41:31,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:41:31,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:41:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:41:33,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 23:41:33,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:41:33,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275842186] [2024-11-18 23:41:33,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275842186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:41:33,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:41:33,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 23:41:33,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158757867] [2024-11-18 23:41:33,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:41:33,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 23:41:33,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:41:33,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 23:41:33,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:41:33,825 INFO L87 Difference]: Start difference. First operand 545 states and 842 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2024-11-18 23:41:34,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:41:34,738 INFO L93 Difference]: Finished difference Result 1495 states and 2294 transitions. [2024-11-18 23:41:34,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 23:41:34,739 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 300 [2024-11-18 23:41:34,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:41:34,745 INFO L225 Difference]: With dead ends: 1495 [2024-11-18 23:41:34,745 INFO L226 Difference]: Without dead ends: 1039 [2024-11-18 23:41:34,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:41:34,750 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 825 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 23:41:34,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 1583 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 23:41:34,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2024-11-18 23:41:34,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 899. [2024-11-18 23:41:34,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 735 states have (on average 1.4489795918367347) internal successors, (1065), 737 states have internal predecessors, (1065), 158 states have call successors, (158), 5 states have call predecessors, (158), 5 states have return successors, (158), 156 states have call predecessors, (158), 158 states have call successors, (158) [2024-11-18 23:41:34,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1381 transitions. [2024-11-18 23:41:34,867 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1381 transitions. Word has length 300 [2024-11-18 23:41:34,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:41:34,868 INFO L471 AbstractCegarLoop]: Abstraction has 899 states and 1381 transitions. [2024-11-18 23:41:34,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2024-11-18 23:41:34,868 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1381 transitions. [2024-11-18 23:41:34,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-18 23:41:34,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:41:34,874 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:41:34,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:41:34,875 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:41:34,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:41:34,876 INFO L85 PathProgramCache]: Analyzing trace with hash -2078841427, now seen corresponding path program 1 times [2024-11-18 23:41:34,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:41:34,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996356669] [2024-11-18 23:41:34,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:41:34,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:41:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:41:35,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 39 proven. 90 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-18 23:41:35,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:41:35,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996356669] [2024-11-18 23:41:35,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996356669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:41:35,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763013344] [2024-11-18 23:41:35,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:41:35,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:41:35,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:41:35,994 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) [2024-11-18 23:41:35,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 23:41:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:41:36,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 23:41:36,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:41:37,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1629 proven. 90 refuted. 0 times theorem prover too weak. 2065 trivial. 0 not checked. [2024-11-18 23:41:37,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:41:37,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 39 proven. 90 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-18 23:41:37,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763013344] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:41:37,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:41:37,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 16 [2024-11-18 23:41:37,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577120697] [2024-11-18 23:41:37,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:41:37,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 23:41:37,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:41:37,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 23:41:37,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-11-18 23:41:37,691 INFO L87 Difference]: Start difference. First operand 899 states and 1381 transitions. Second operand has 16 states, 15 states have (on average 11.2) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 5 states have call predecessors, (132), 6 states have call successors, (132) [2024-11-18 23:41:38,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:41:38,926 INFO L93 Difference]: Finished difference Result 1807 states and 2764 transitions. [2024-11-18 23:41:38,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 23:41:38,927 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 11.2) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 5 states have call predecessors, (132), 6 states have call successors, (132) Word has length 300 [2024-11-18 23:41:38,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:41:38,933 INFO L225 Difference]: With dead ends: 1807 [2024-11-18 23:41:38,934 INFO L226 Difference]: Without dead ends: 1151 [2024-11-18 23:41:38,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2024-11-18 23:41:38,937 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 519 mSDsluCounter, 2127 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 2345 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:41:38,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 2345 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 23:41:38,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2024-11-18 23:41:38,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 703. [2024-11-18 23:41:38,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 566 states have (on average 1.4505300353356891) internal successors, (821), 566 states have internal predecessors, (821), 132 states have call successors, (132), 4 states have call predecessors, (132), 4 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2024-11-18 23:41:39,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1085 transitions. [2024-11-18 23:41:39,003 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1085 transitions. Word has length 300 [2024-11-18 23:41:39,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:41:39,004 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 1085 transitions. [2024-11-18 23:41:39,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 11.2) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 5 states have call predecessors, (132), 6 states have call successors, (132) [2024-11-18 23:41:39,004 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1085 transitions. [2024-11-18 23:41:39,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-18 23:41:39,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:41:39,008 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:41:39,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 23:41:39,212 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,SelfDestructingSolverStorable5 [2024-11-18 23:41:39,213 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:41:39,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:41:39,214 INFO L85 PathProgramCache]: Analyzing trace with hash 782278957, now seen corresponding path program 1 times [2024-11-18 23:41:39,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:41:39,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608199758] [2024-11-18 23:41:39,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:41:39,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:41:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:41:40,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 23:41:40,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:41:40,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608199758] [2024-11-18 23:41:40,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608199758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:41:40,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:41:40,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:41:40,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189966796] [2024-11-18 23:41:40,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:41:40,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:41:40,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:41:40,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:41:40,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:41:40,342 INFO L87 Difference]: Start difference. First operand 703 states and 1085 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-18 23:41:40,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:41:40,662 INFO L93 Difference]: Finished difference Result 1647 states and 2543 transitions. [2024-11-18 23:41:40,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:41:40,663 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 300 [2024-11-18 23:41:40,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:41:40,670 INFO L225 Difference]: With dead ends: 1647 [2024-11-18 23:41:40,670 INFO L226 Difference]: Without dead ends: 1159 [2024-11-18 23:41:40,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:41:40,672 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 228 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:41:40,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 960 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:41:40,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-11-18 23:41:40,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1013. [2024-11-18 23:41:40,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 786 states have (on average 1.4236641221374047) internal successors, (1119), 786 states have internal predecessors, (1119), 220 states have call successors, (220), 6 states have call predecessors, (220), 6 states have return successors, (220), 220 states have call predecessors, (220), 220 states have call successors, (220) [2024-11-18 23:41:40,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1559 transitions. [2024-11-18 23:41:40,746 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1559 transitions. Word has length 300 [2024-11-18 23:41:40,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:41:40,747 INFO L471 AbstractCegarLoop]: Abstraction has 1013 states and 1559 transitions. [2024-11-18 23:41:40,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-18 23:41:40,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1559 transitions. [2024-11-18 23:41:40,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-18 23:41:40,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:41:40,751 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:41:40,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 23:41:40,752 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:41:40,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:41:40,753 INFO L85 PathProgramCache]: Analyzing trace with hash 844318571, now seen corresponding path program 1 times [2024-11-18 23:41:40,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:41:40,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699883394] [2024-11-18 23:41:40,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:41:40,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:41:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:41:44,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 81 proven. 171 refuted. 0 times theorem prover too weak. 3532 trivial. 0 not checked. [2024-11-18 23:41:44,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:41:44,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699883394] [2024-11-18 23:41:44,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699883394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:41:44,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129686884] [2024-11-18 23:41:44,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:41:44,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:41:44,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:41:44,397 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) [2024-11-18 23:41:44,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 23:41:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:41:44,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 23:41:44,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:41:46,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2596 proven. 111 refuted. 0 times theorem prover too weak. 1077 trivial. 0 not checked. [2024-11-18 23:41:46,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:41:48,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 141 proven. 114 refuted. 0 times theorem prover too weak. 3529 trivial. 0 not checked. [2024-11-18 23:41:48,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129686884] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:41:48,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:41:48,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 13] total 37 [2024-11-18 23:41:48,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928818085] [2024-11-18 23:41:48,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:41:48,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-18 23:41:48,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:41:48,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-18 23:41:48,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1142, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 23:41:48,050 INFO L87 Difference]: Start difference. First operand 1013 states and 1559 transitions. Second operand has 37 states, 33 states have (on average 6.636363636363637) internal successors, (219), 36 states have internal predecessors, (219), 15 states have call successors, (132), 6 states have call predecessors, (132), 10 states have return successors, (132), 11 states have call predecessors, (132), 15 states have call successors, (132) [2024-11-18 23:42:00,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:42:00,180 INFO L93 Difference]: Finished difference Result 7229 states and 10784 transitions. [2024-11-18 23:42:00,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-18 23:42:00,181 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 33 states have (on average 6.636363636363637) internal successors, (219), 36 states have internal predecessors, (219), 15 states have call successors, (132), 6 states have call predecessors, (132), 10 states have return successors, (132), 11 states have call predecessors, (132), 15 states have call successors, (132) Word has length 300 [2024-11-18 23:42:00,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:42:00,211 INFO L225 Difference]: With dead ends: 7229 [2024-11-18 23:42:00,212 INFO L226 Difference]: Without dead ends: 6317 [2024-11-18 23:42:00,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4987 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=2660, Invalid=12592, Unknown=0, NotChecked=0, Total=15252 [2024-11-18 23:42:00,221 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 7233 mSDsluCounter, 3078 mSDsCounter, 0 mSdLazyCounter, 3469 mSolverCounterSat, 2386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7284 SdHoareTripleChecker+Valid, 3280 SdHoareTripleChecker+Invalid, 5855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2386 IncrementalHoareTripleChecker+Valid, 3469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:42:00,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7284 Valid, 3280 Invalid, 5855 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2386 Valid, 3469 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-18 23:42:00,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6317 states. [2024-11-18 23:42:00,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6317 to 2431. [2024-11-18 23:42:00,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2431 states, 1951 states have (on average 1.4085084572014352) internal successors, (2748), 1955 states have internal predecessors, (2748), 448 states have call successors, (448), 31 states have call predecessors, (448), 31 states have return successors, (448), 444 states have call predecessors, (448), 448 states have call successors, (448) [2024-11-18 23:42:00,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3644 transitions. [2024-11-18 23:42:00,608 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3644 transitions. Word has length 300 [2024-11-18 23:42:00,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:42:00,609 INFO L471 AbstractCegarLoop]: Abstraction has 2431 states and 3644 transitions. [2024-11-18 23:42:00,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 33 states have (on average 6.636363636363637) internal successors, (219), 36 states have internal predecessors, (219), 15 states have call successors, (132), 6 states have call predecessors, (132), 10 states have return successors, (132), 11 states have call predecessors, (132), 15 states have call successors, (132) [2024-11-18 23:42:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3644 transitions. [2024-11-18 23:42:00,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-18 23:42:00,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:42:00,615 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:42:00,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 23:42:00,818 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,SelfDestructingSolverStorable7 [2024-11-18 23:42:00,819 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:42:00,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:42:00,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1793529643, now seen corresponding path program 1 times [2024-11-18 23:42:00,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:42:00,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152655995] [2024-11-18 23:42:00,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:00,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:42:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 51 proven. 78 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-18 23:42:01,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:42:01,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152655995] [2024-11-18 23:42:01,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152655995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:42:01,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021569651] [2024-11-18 23:42:01,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:01,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:42:01,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:42:01,964 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) [2024-11-18 23:42:01,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 23:42:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:02,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-18 23:42:02,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:42:03,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2001 proven. 324 refuted. 0 times theorem prover too weak. 1459 trivial. 0 not checked. [2024-11-18 23:42:03,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:42:39,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 156 proven. 342 refuted. 0 times theorem prover too weak. 3286 trivial. 0 not checked. [2024-11-18 23:42:39,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021569651] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:42:39,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:42:39,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16, 17] total 39 [2024-11-18 23:42:39,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388545733] [2024-11-18 23:42:39,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:42:39,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-18 23:42:39,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:42:39,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-18 23:42:39,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=1175, Unknown=1, NotChecked=0, Total=1482 [2024-11-18 23:42:39,925 INFO L87 Difference]: Start difference. First operand 2431 states and 3644 transitions. Second operand has 39 states, 36 states have (on average 5.888888888888889) internal successors, (212), 35 states have internal predecessors, (212), 13 states have call successors, (132), 6 states have call predecessors, (132), 13 states have return successors, (132), 12 states have call predecessors, (132), 13 states have call successors, (132)