./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-74.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-74.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 81fdc30d5ae06f4aa0f8c63596e14b99f6ff7b82b4febb712a46f5be02949bcd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 11:44:32,178 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 11:44:32,226 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 11:44:32,229 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 11:44:32,229 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 11:44:32,259 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 11:44:32,259 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 11:44:32,260 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 11:44:32,260 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 11:44:32,260 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 11:44:32,261 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 11:44:32,261 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 11:44:32,261 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 11:44:32,262 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 11:44:32,262 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 11:44:32,262 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 11:44:32,262 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 11:44:32,263 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 11:44:32,263 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 11:44:32,263 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 11:44:32,264 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 11:44:32,267 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 11:44:32,267 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 11:44:32,268 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 11:44:32,268 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 11:44:32,268 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 11:44:32,268 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 11:44:32,268 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 11:44:32,269 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 11:44:32,269 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 11:44:32,269 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 11:44:32,269 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 11:44:32,270 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:44:32,270 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 11:44:32,270 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 11:44:32,270 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 11:44:32,271 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 11:44:32,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 11:44:32,271 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 11:44:32,275 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 11:44:32,276 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 11:44:32,276 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 11:44:32,276 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81fdc30d5ae06f4aa0f8c63596e14b99f6ff7b82b4febb712a46f5be02949bcd [2024-11-22 11:44:32,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 11:44:32,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 11:44:32,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 11:44:32,487 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 11:44:32,487 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 11:44:32,488 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-74.i [2024-11-22 11:44:33,683 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 11:44:33,876 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 11:44:33,876 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-74.i [2024-11-22 11:44:33,885 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/150a42be7/817dcc374cda405eb52bea04adc4a7ed/FLAG958e6dee5 [2024-11-22 11:44:34,242 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/150a42be7/817dcc374cda405eb52bea04adc4a7ed [2024-11-22 11:44:34,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 11:44:34,245 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 11:44:34,246 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 11:44:34,246 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 11:44:34,249 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 11:44:34,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:44:34" (1/1) ... [2024-11-22 11:44:34,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13995270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:34, skipping insertion in model container [2024-11-22 11:44:34,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:44:34" (1/1) ... [2024-11-22 11:44:34,275 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 11:44:34,402 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-74.i[916,929] [2024-11-22 11:44:34,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:44:34,528 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 11:44:34,536 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-74.i[916,929] [2024-11-22 11:44:34,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:44:34,590 INFO L204 MainTranslator]: Completed translation [2024-11-22 11:44:34,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:34 WrapperNode [2024-11-22 11:44:34,591 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 11:44:34,592 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 11:44:34,592 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 11:44:34,592 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 11:44:34,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:34" (1/1) ... [2024-11-22 11:44:34,613 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:34" (1/1) ... [2024-11-22 11:44:34,660 INFO L138 Inliner]: procedures = 26, calls = 58, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 450 [2024-11-22 11:44:34,661 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 11:44:34,661 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 11:44:34,661 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 11:44:34,662 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 11:44:34,670 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:34" (1/1) ... [2024-11-22 11:44:34,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:34" (1/1) ... [2024-11-22 11:44:34,685 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:34" (1/1) ... [2024-11-22 11:44:34,720 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 11:44:34,721 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:34" (1/1) ... [2024-11-22 11:44:34,721 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:34" (1/1) ... [2024-11-22 11:44:34,741 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:34" (1/1) ... [2024-11-22 11:44:34,745 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:34" (1/1) ... [2024-11-22 11:44:34,758 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:34" (1/1) ... [2024-11-22 11:44:34,769 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:34" (1/1) ... [2024-11-22 11:44:34,799 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 11:44:34,803 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 11:44:34,803 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 11:44:34,803 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 11:44:34,804 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:34" (1/1) ... [2024-11-22 11:44:34,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:44:34,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:44:34,832 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 11:44:34,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 11:44:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 11:44:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 11:44:34,892 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 11:44:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 11:44:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 11:44:34,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 11:44:34,978 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 11:44:34,979 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 11:44:35,569 INFO L? ?]: Removed 57 outVars from TransFormulas that were not future-live. [2024-11-22 11:44:35,569 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 11:44:35,584 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 11:44:35,586 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 11:44:35,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:44:35 BoogieIcfgContainer [2024-11-22 11:44:35,586 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 11:44:35,588 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 11:44:35,589 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 11:44:35,591 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 11:44:35,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:44:34" (1/3) ... [2024-11-22 11:44:35,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc3ea44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:44:35, skipping insertion in model container [2024-11-22 11:44:35,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:34" (2/3) ... [2024-11-22 11:44:35,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc3ea44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:44:35, skipping insertion in model container [2024-11-22 11:44:35,594 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:44:35" (3/3) ... [2024-11-22 11:44:35,595 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-74.i [2024-11-22 11:44:35,610 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 11:44:35,611 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 11:44:35,674 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 11:44:35,680 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;@360f2731, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 11:44:35,680 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 11:44:35,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 192 states, 144 states have (on average 1.4930555555555556) internal successors, (215), 145 states have internal predecessors, (215), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-22 11:44:35,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-22 11:44:35,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:35,707 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:35,708 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:35,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:35,713 INFO L85 PathProgramCache]: Analyzing trace with hash 2084694447, now seen corresponding path program 1 times [2024-11-22 11:44:35,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:35,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798324021] [2024-11-22 11:44:35,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:35,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:36,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2024-11-22 11:44:36,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:36,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798324021] [2024-11-22 11:44:36,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798324021] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:44:36,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935093701] [2024-11-22 11:44:36,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:36,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:44:36,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:44:36,153 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:44:36,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 11:44:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:36,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 11:44:36,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:44:36,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2024-11-22 11:44:36,406 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:44:36,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935093701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:44:36,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:44:36,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 11:44:36,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077657703] [2024-11-22 11:44:36,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:44:36,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 11:44:36,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:36,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 11:44:36,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:44:36,441 INFO L87 Difference]: Start difference. First operand has 192 states, 144 states have (on average 1.4930555555555556) internal successors, (215), 145 states have internal predecessors, (215), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) [2024-11-22 11:44:36,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:36,472 INFO L93 Difference]: Finished difference Result 377 states and 649 transitions. [2024-11-22 11:44:36,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 11:44:36,474 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) Word has length 310 [2024-11-22 11:44:36,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:36,480 INFO L225 Difference]: With dead ends: 377 [2024-11-22 11:44:36,480 INFO L226 Difference]: Without dead ends: 188 [2024-11-22 11:44:36,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:44:36,488 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:36,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:44:36,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-22 11:44:36,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2024-11-22 11:44:36,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 141 states have (on average 1.475177304964539) internal successors, (208), 141 states have internal predecessors, (208), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-22 11:44:36,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 298 transitions. [2024-11-22 11:44:36,542 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 298 transitions. Word has length 310 [2024-11-22 11:44:36,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:36,545 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 298 transitions. [2024-11-22 11:44:36,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) [2024-11-22 11:44:36,546 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 298 transitions. [2024-11-22 11:44:36,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-22 11:44:36,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:36,553 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:36,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 11:44:36,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 11:44:36,758 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:36,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:36,759 INFO L85 PathProgramCache]: Analyzing trace with hash -542241623, now seen corresponding path program 1 times [2024-11-22 11:44:36,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:36,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090712133] [2024-11-22 11:44:36,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:36,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:37,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:44:37,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:37,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090712133] [2024-11-22 11:44:37,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090712133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:44:37,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:44:37,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:44:37,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204120838] [2024-11-22 11:44:37,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:44:37,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:44:37,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:37,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:44:37,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:44:37,011 INFO L87 Difference]: Start difference. First operand 188 states and 298 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:44:37,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:37,102 INFO L93 Difference]: Finished difference Result 554 states and 880 transitions. [2024-11-22 11:44:37,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:44:37,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 310 [2024-11-22 11:44:37,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:37,110 INFO L225 Difference]: With dead ends: 554 [2024-11-22 11:44:37,111 INFO L226 Difference]: Without dead ends: 369 [2024-11-22 11:44:37,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:44:37,115 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 281 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:37,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 784 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:44:37,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-11-22 11:44:37,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 367. [2024-11-22 11:44:37,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 274 states have (on average 1.4598540145985401) internal successors, (400), 274 states have internal predecessors, (400), 90 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-22 11:44:37,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 580 transitions. [2024-11-22 11:44:37,187 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 580 transitions. Word has length 310 [2024-11-22 11:44:37,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:37,188 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 580 transitions. [2024-11-22 11:44:37,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:44:37,188 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 580 transitions. [2024-11-22 11:44:37,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-22 11:44:37,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:37,192 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:37,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 11:44:37,193 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:37,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:37,193 INFO L85 PathProgramCache]: Analyzing trace with hash -323386905, now seen corresponding path program 1 times [2024-11-22 11:44:37,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:37,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117772937] [2024-11-22 11:44:37,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:37,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:37,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:44:37,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:37,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117772937] [2024-11-22 11:44:37,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117772937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:44:37,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:44:37,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:44:37,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029239424] [2024-11-22 11:44:37,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:44:37,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:44:37,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:37,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:44:37,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:44:37,744 INFO L87 Difference]: Start difference. First operand 367 states and 580 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:44:37,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:37,999 INFO L93 Difference]: Finished difference Result 1285 states and 2012 transitions. [2024-11-22 11:44:38,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 11:44:38,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 310 [2024-11-22 11:44:38,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:38,009 INFO L225 Difference]: With dead ends: 1285 [2024-11-22 11:44:38,010 INFO L226 Difference]: Without dead ends: 921 [2024-11-22 11:44:38,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:44:38,012 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 446 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:38,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 981 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:44:38,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2024-11-22 11:44:38,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 630. [2024-11-22 11:44:38,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 445 states have (on average 1.397752808988764) internal successors, (622), 445 states have internal predecessors, (622), 180 states have call successors, (180), 4 states have call predecessors, (180), 4 states have return successors, (180), 180 states have call predecessors, (180), 180 states have call successors, (180) [2024-11-22 11:44:38,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 982 transitions. [2024-11-22 11:44:38,075 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 982 transitions. Word has length 310 [2024-11-22 11:44:38,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:38,075 INFO L471 AbstractCegarLoop]: Abstraction has 630 states and 982 transitions. [2024-11-22 11:44:38,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:44:38,076 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 982 transitions. [2024-11-22 11:44:38,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-22 11:44:38,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:38,079 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:38,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 11:44:38,079 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:38,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:38,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1303059060, now seen corresponding path program 1 times [2024-11-22 11:44:38,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:38,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131251963] [2024-11-22 11:44:38,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:38,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:44:38,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:38,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131251963] [2024-11-22 11:44:38,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131251963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:44:38,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:44:38,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:44:38,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924426270] [2024-11-22 11:44:38,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:44:38,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:44:38,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:38,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:44:38,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:44:38,492 INFO L87 Difference]: Start difference. First operand 630 states and 982 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:44:38,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:38,717 INFO L93 Difference]: Finished difference Result 1586 states and 2464 transitions. [2024-11-22 11:44:38,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:44:38,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 311 [2024-11-22 11:44:38,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:38,726 INFO L225 Difference]: With dead ends: 1586 [2024-11-22 11:44:38,726 INFO L226 Difference]: Without dead ends: 959 [2024-11-22 11:44:38,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:44:38,729 INFO L432 NwaCegarLoop]: 289 mSDtfsCounter, 266 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:38,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 856 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:44:38,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2024-11-22 11:44:38,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 825. [2024-11-22 11:44:38,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 594 states have (on average 1.4158249158249159) internal successors, (841), 594 states have internal predecessors, (841), 225 states have call successors, (225), 5 states have call predecessors, (225), 5 states have return successors, (225), 225 states have call predecessors, (225), 225 states have call successors, (225) [2024-11-22 11:44:38,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1291 transitions. [2024-11-22 11:44:38,785 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1291 transitions. Word has length 311 [2024-11-22 11:44:38,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:38,787 INFO L471 AbstractCegarLoop]: Abstraction has 825 states and 1291 transitions. [2024-11-22 11:44:38,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:44:38,788 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1291 transitions. [2024-11-22 11:44:38,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-11-22 11:44:38,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:38,790 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:38,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 11:44:38,791 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:38,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:38,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1662460331, now seen corresponding path program 1 times [2024-11-22 11:44:38,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:38,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211502840] [2024-11-22 11:44:38,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:38,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:39,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:44:39,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:39,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211502840] [2024-11-22 11:44:39,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211502840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:44:39,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:44:39,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:44:39,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454328128] [2024-11-22 11:44:39,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:44:39,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:44:39,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:39,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:44:39,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:44:39,100 INFO L87 Difference]: Start difference. First operand 825 states and 1291 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:44:39,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:39,322 INFO L93 Difference]: Finished difference Result 1697 states and 2638 transitions. [2024-11-22 11:44:39,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:44:39,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 312 [2024-11-22 11:44:39,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:39,328 INFO L225 Difference]: With dead ends: 1697 [2024-11-22 11:44:39,328 INFO L226 Difference]: Without dead ends: 959 [2024-11-22 11:44:39,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:44:39,331 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 262 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:39,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 859 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:44:39,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2024-11-22 11:44:39,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 829. [2024-11-22 11:44:39,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 598 states have (on average 1.411371237458194) internal successors, (844), 598 states have internal predecessors, (844), 225 states have call successors, (225), 5 states have call predecessors, (225), 5 states have return successors, (225), 225 states have call predecessors, (225), 225 states have call successors, (225) [2024-11-22 11:44:39,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1294 transitions. [2024-11-22 11:44:39,381 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1294 transitions. Word has length 312 [2024-11-22 11:44:39,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:39,381 INFO L471 AbstractCegarLoop]: Abstraction has 829 states and 1294 transitions. [2024-11-22 11:44:39,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:44:39,382 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1294 transitions. [2024-11-22 11:44:39,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2024-11-22 11:44:39,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:39,386 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:39,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 11:44:39,386 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:39,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:39,387 INFO L85 PathProgramCache]: Analyzing trace with hash -976397673, now seen corresponding path program 1 times [2024-11-22 11:44:39,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:39,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156420269] [2024-11-22 11:44:39,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:39,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:39,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:44:39,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:39,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156420269] [2024-11-22 11:44:39,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156420269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:44:39,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:44:39,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:44:39,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588458248] [2024-11-22 11:44:39,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:44:39,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:44:39,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:39,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:44:39,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:44:39,840 INFO L87 Difference]: Start difference. First operand 829 states and 1294 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:44:40,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:40,103 INFO L93 Difference]: Finished difference Result 2014 states and 3119 transitions. [2024-11-22 11:44:40,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:44:40,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 313 [2024-11-22 11:44:40,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:40,109 INFO L225 Difference]: With dead ends: 2014 [2024-11-22 11:44:40,110 INFO L226 Difference]: Without dead ends: 1340 [2024-11-22 11:44:40,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:44:40,112 INFO L432 NwaCegarLoop]: 493 mSDtfsCounter, 284 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:40,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 1051 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:44:40,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2024-11-22 11:44:40,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1138. [2024-11-22 11:44:40,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 851 states have (on average 1.4136310223266746) internal successors, (1203), 853 states have internal predecessors, (1203), 277 states have call successors, (277), 9 states have call predecessors, (277), 9 states have return successors, (277), 275 states have call predecessors, (277), 277 states have call successors, (277) [2024-11-22 11:44:40,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1757 transitions. [2024-11-22 11:44:40,167 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1757 transitions. Word has length 313 [2024-11-22 11:44:40,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:40,167 INFO L471 AbstractCegarLoop]: Abstraction has 1138 states and 1757 transitions. [2024-11-22 11:44:40,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:44:40,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1757 transitions. [2024-11-22 11:44:40,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2024-11-22 11:44:40,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:40,170 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:40,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 11:44:40,171 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:40,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:40,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1110411179, now seen corresponding path program 1 times [2024-11-22 11:44:40,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:40,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338946210] [2024-11-22 11:44:40,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:40,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:40,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:44:40,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:40,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338946210] [2024-11-22 11:44:40,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338946210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:44:40,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:44:40,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:44:40,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947452839] [2024-11-22 11:44:40,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:44:40,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:44:40,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:40,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:44:40,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:44:40,471 INFO L87 Difference]: Start difference. First operand 1138 states and 1757 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:44:40,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:40,552 INFO L93 Difference]: Finished difference Result 2515 states and 3886 transitions. [2024-11-22 11:44:40,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:44:40,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 313 [2024-11-22 11:44:40,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:40,561 INFO L225 Difference]: With dead ends: 2515 [2024-11-22 11:44:40,561 INFO L226 Difference]: Without dead ends: 1598 [2024-11-22 11:44:40,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:44:40,565 INFO L432 NwaCegarLoop]: 376 mSDtfsCounter, 184 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:40,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 658 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:44:40,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2024-11-22 11:44:40,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1596. [2024-11-22 11:44:40,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1189 states have (on average 1.4121110176619007) internal successors, (1679), 1192 states have internal predecessors, (1679), 393 states have call successors, (393), 13 states have call predecessors, (393), 13 states have return successors, (393), 390 states have call predecessors, (393), 393 states have call successors, (393) [2024-11-22 11:44:40,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2465 transitions. [2024-11-22 11:44:40,636 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2465 transitions. Word has length 313 [2024-11-22 11:44:40,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:40,636 INFO L471 AbstractCegarLoop]: Abstraction has 1596 states and 2465 transitions. [2024-11-22 11:44:40,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:44:40,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2465 transitions. [2024-11-22 11:44:40,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2024-11-22 11:44:40,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:40,640 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:40,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 11:44:40,640 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:40,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:40,640 INFO L85 PathProgramCache]: Analyzing trace with hash -477360905, now seen corresponding path program 1 times [2024-11-22 11:44:40,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:40,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881542161] [2024-11-22 11:44:40,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:40,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:44:41,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:41,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881542161] [2024-11-22 11:44:41,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881542161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:44:41,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:44:41,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 11:44:41,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869539243] [2024-11-22 11:44:41,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:44:41,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 11:44:41,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:41,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 11:44:41,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:44:41,265 INFO L87 Difference]: Start difference. First operand 1596 states and 2465 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:44:41,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:41,872 INFO L93 Difference]: Finished difference Result 6492 states and 10050 transitions. [2024-11-22 11:44:41,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 11:44:41,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 313 [2024-11-22 11:44:41,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:41,894 INFO L225 Difference]: With dead ends: 6492 [2024-11-22 11:44:41,895 INFO L226 Difference]: Without dead ends: 4992 [2024-11-22 11:44:41,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-22 11:44:41,902 INFO L432 NwaCegarLoop]: 504 mSDtfsCounter, 769 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:41,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 1618 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 11:44:41,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4992 states. [2024-11-22 11:44:42,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4992 to 4986. [2024-11-22 11:44:42,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4986 states, 3781 states have (on average 1.394869082253372) internal successors, (5274), 3793 states have internal predecessors, (5274), 1167 states have call successors, (1167), 37 states have call predecessors, (1167), 37 states have return successors, (1167), 1155 states have call predecessors, (1167), 1167 states have call successors, (1167) [2024-11-22 11:44:42,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4986 states to 4986 states and 7608 transitions. [2024-11-22 11:44:42,156 INFO L78 Accepts]: Start accepts. Automaton has 4986 states and 7608 transitions. Word has length 313 [2024-11-22 11:44:42,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:42,157 INFO L471 AbstractCegarLoop]: Abstraction has 4986 states and 7608 transitions. [2024-11-22 11:44:42,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:44:42,157 INFO L276 IsEmpty]: Start isEmpty. Operand 4986 states and 7608 transitions. [2024-11-22 11:44:42,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-22 11:44:42,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:42,161 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:42,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 11:44:42,162 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:42,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:42,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1214377914, now seen corresponding path program 1 times [2024-11-22 11:44:42,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:42,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459526358] [2024-11-22 11:44:42,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:42,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:44:43,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:43,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459526358] [2024-11-22 11:44:43,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459526358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:44:43,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:44:43,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 11:44:43,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410079788] [2024-11-22 11:44:43,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:44:43,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 11:44:43,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:43,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 11:44:43,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:44:43,182 INFO L87 Difference]: Start difference. First operand 4986 states and 7608 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:44:43,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:43,832 INFO L93 Difference]: Finished difference Result 12303 states and 18793 transitions. [2024-11-22 11:44:43,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 11:44:43,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 314 [2024-11-22 11:44:43,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:43,872 INFO L225 Difference]: With dead ends: 12303 [2024-11-22 11:44:43,873 INFO L226 Difference]: Without dead ends: 7815 [2024-11-22 11:44:43,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-22 11:44:43,889 INFO L432 NwaCegarLoop]: 293 mSDtfsCounter, 573 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:43,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 921 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 11:44:43,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7815 states. [2024-11-22 11:44:44,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7815 to 7811. [2024-11-22 11:44:44,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7811 states, 5886 states have (on average 1.3904179408766564) internal successors, (8184), 5904 states have internal predecessors, (8184), 1863 states have call successors, (1863), 61 states have call predecessors, (1863), 61 states have return successors, (1863), 1845 states have call predecessors, (1863), 1863 states have call successors, (1863) [2024-11-22 11:44:44,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7811 states to 7811 states and 11910 transitions. [2024-11-22 11:44:44,280 INFO L78 Accepts]: Start accepts. Automaton has 7811 states and 11910 transitions. Word has length 314 [2024-11-22 11:44:44,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:44,281 INFO L471 AbstractCegarLoop]: Abstraction has 7811 states and 11910 transitions. [2024-11-22 11:44:44,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:44:44,281 INFO L276 IsEmpty]: Start isEmpty. Operand 7811 states and 11910 transitions. [2024-11-22 11:44:44,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-22 11:44:44,286 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:44,287 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:44,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 11:44:44,287 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:44,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:44,288 INFO L85 PathProgramCache]: Analyzing trace with hash 2017322118, now seen corresponding path program 1 times [2024-11-22 11:44:44,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:44,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332306254] [2024-11-22 11:44:44,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:44,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:45,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 54 proven. 78 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2024-11-22 11:44:45,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:45,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332306254] [2024-11-22 11:44:45,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332306254] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:44:45,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343869275] [2024-11-22 11:44:45,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:45,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:44:45,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:44:45,190 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:44:45,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 11:44:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:45,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 11:44:45,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:44:46,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1968 proven. 54 refuted. 0 times theorem prover too weak. 1938 trivial. 0 not checked. [2024-11-22 11:44:46,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:44:46,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 78 proven. 54 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2024-11-22 11:44:46,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343869275] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:44:46,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:44:46,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 20 [2024-11-22 11:44:46,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132768307] [2024-11-22 11:44:46,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:44:46,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 11:44:46,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:46,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 11:44:46,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-22 11:44:46,637 INFO L87 Difference]: Start difference. First operand 7811 states and 11910 transitions. Second operand has 20 states, 20 states have (on average 10.45) internal successors, (209), 20 states have internal predecessors, (209), 6 states have call successors, (135), 3 states have call predecessors, (135), 6 states have return successors, (135), 6 states have call predecessors, (135), 6 states have call successors, (135) [2024-11-22 11:44:49,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:49,857 INFO L93 Difference]: Finished difference Result 19416 states and 29147 transitions. [2024-11-22 11:44:49,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-22 11:44:49,862 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.45) internal successors, (209), 20 states have internal predecessors, (209), 6 states have call successors, (135), 3 states have call predecessors, (135), 6 states have return successors, (135), 6 states have call predecessors, (135), 6 states have call successors, (135) Word has length 314 [2024-11-22 11:44:49,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:49,911 INFO L225 Difference]: With dead ends: 19416 [2024-11-22 11:44:49,911 INFO L226 Difference]: Without dead ends: 11732 [2024-11-22 11:44:49,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 619 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=789, Invalid=2751, Unknown=0, NotChecked=0, Total=3540 [2024-11-22 11:44:49,933 INFO L432 NwaCegarLoop]: 350 mSDtfsCounter, 4074 mSDsluCounter, 3093 mSDsCounter, 0 mSdLazyCounter, 2398 mSolverCounterSat, 1249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4075 SdHoareTripleChecker+Valid, 3443 SdHoareTripleChecker+Invalid, 3647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1249 IncrementalHoareTripleChecker+Valid, 2398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:49,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4075 Valid, 3443 Invalid, 3647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1249 Valid, 2398 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-22 11:44:49,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11732 states. [2024-11-22 11:44:50,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11732 to 4290. [2024-11-22 11:44:50,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 3317 states have (on average 1.3804642749472416) internal successors, (4579), 3339 states have internal predecessors, (4579), 923 states have call successors, (923), 49 states have call predecessors, (923), 49 states have return successors, (923), 901 states have call predecessors, (923), 923 states have call successors, (923) [2024-11-22 11:44:50,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 6425 transitions. [2024-11-22 11:44:50,281 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 6425 transitions. Word has length 314 [2024-11-22 11:44:50,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:50,282 INFO L471 AbstractCegarLoop]: Abstraction has 4290 states and 6425 transitions. [2024-11-22 11:44:50,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.45) internal successors, (209), 20 states have internal predecessors, (209), 6 states have call successors, (135), 3 states have call predecessors, (135), 6 states have return successors, (135), 6 states have call predecessors, (135), 6 states have call successors, (135) [2024-11-22 11:44:50,282 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 6425 transitions. [2024-11-22 11:44:50,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-11-22 11:44:50,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:50,287 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:50,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 11:44:50,488 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,SelfDestructingSolverStorable9 [2024-11-22 11:44:50,489 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:50,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:50,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1483550520, now seen corresponding path program 1 times [2024-11-22 11:44:50,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:50,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289909393] [2024-11-22 11:44:50,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:50,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:50,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:44:50,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:50,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289909393] [2024-11-22 11:44:50,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289909393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:44:50,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:44:50,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 11:44:50,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821325258] [2024-11-22 11:44:50,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:44:50,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 11:44:50,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:50,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 11:44:50,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:44:50,958 INFO L87 Difference]: Start difference. First operand 4290 states and 6425 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:44:51,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:51,416 INFO L93 Difference]: Finished difference Result 7662 states and 11460 transitions. [2024-11-22 11:44:51,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 11:44:51,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 316 [2024-11-22 11:44:51,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:51,432 INFO L225 Difference]: With dead ends: 7662 [2024-11-22 11:44:51,432 INFO L226 Difference]: Without dead ends: 5046 [2024-11-22 11:44:51,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-22 11:44:51,441 INFO L432 NwaCegarLoop]: 537 mSDtfsCounter, 301 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:51,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 1564 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 11:44:51,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5046 states. [2024-11-22 11:44:51,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5046 to 4326. [2024-11-22 11:44:51,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 3353 states have (on average 1.376379361765583) internal successors, (4615), 3375 states have internal predecessors, (4615), 923 states have call successors, (923), 49 states have call predecessors, (923), 49 states have return successors, (923), 901 states have call predecessors, (923), 923 states have call successors, (923) [2024-11-22 11:44:51,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 6461 transitions. [2024-11-22 11:44:51,686 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 6461 transitions. Word has length 316 [2024-11-22 11:44:51,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:51,686 INFO L471 AbstractCegarLoop]: Abstraction has 4326 states and 6461 transitions. [2024-11-22 11:44:51,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:44:51,687 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 6461 transitions. [2024-11-22 11:44:51,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-11-22 11:44:51,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:51,691 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:51,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 11:44:51,692 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:51,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:51,692 INFO L85 PathProgramCache]: Analyzing trace with hash -888872744, now seen corresponding path program 1 times [2024-11-22 11:44:51,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:51,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716488870] [2024-11-22 11:44:51,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:51,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:52,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:44:52,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:52,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716488870] [2024-11-22 11:44:52,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716488870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:44:52,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:44:52,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 11:44:52,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946030489] [2024-11-22 11:44:52,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:44:52,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 11:44:52,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:52,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 11:44:52,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-22 11:44:52,442 INFO L87 Difference]: Start difference. First operand 4326 states and 6461 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:44:53,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:53,481 INFO L93 Difference]: Finished difference Result 13311 states and 19682 transitions. [2024-11-22 11:44:53,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 11:44:53,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 316 [2024-11-22 11:44:53,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:53,514 INFO L225 Difference]: With dead ends: 13311 [2024-11-22 11:44:53,515 INFO L226 Difference]: Without dead ends: 10683 [2024-11-22 11:44:53,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-22 11:44:53,526 INFO L432 NwaCegarLoop]: 530 mSDtfsCounter, 535 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:53,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 1371 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 11:44:53,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10683 states. [2024-11-22 11:44:53,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10683 to 4326. [2024-11-22 11:44:53,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 3353 states have (on average 1.376379361765583) internal successors, (4615), 3375 states have internal predecessors, (4615), 923 states have call successors, (923), 49 states have call predecessors, (923), 49 states have return successors, (923), 901 states have call predecessors, (923), 923 states have call successors, (923) [2024-11-22 11:44:53,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 6461 transitions. [2024-11-22 11:44:53,788 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 6461 transitions. Word has length 316 [2024-11-22 11:44:53,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:53,789 INFO L471 AbstractCegarLoop]: Abstraction has 4326 states and 6461 transitions. [2024-11-22 11:44:53,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:44:53,790 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 6461 transitions. [2024-11-22 11:44:53,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-11-22 11:44:53,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:53,793 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:53,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 11:44:53,794 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:53,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:53,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1034355290, now seen corresponding path program 1 times [2024-11-22 11:44:53,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:53,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532775838] [2024-11-22 11:44:53,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:53,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 78 proven. 54 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2024-11-22 11:44:54,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:54,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532775838] [2024-11-22 11:44:54,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532775838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:44:54,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875775958] [2024-11-22 11:44:54,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:54,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:44:54,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:44:54,421 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:44:54,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 11:44:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:54,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-22 11:44:54,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:44:54,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1988 proven. 102 refuted. 0 times theorem prover too weak. 1870 trivial. 0 not checked. [2024-11-22 11:44:54,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:44:55,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 78 proven. 54 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2024-11-22 11:44:55,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875775958] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:44:55,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:44:55,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7] total 16 [2024-11-22 11:44:55,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428349949] [2024-11-22 11:44:55,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:44:55,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 11:44:55,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:55,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 11:44:55,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-22 11:44:55,125 INFO L87 Difference]: Start difference. First operand 4326 states and 6461 transitions. Second operand has 16 states, 16 states have (on average 10.125) internal successors, (162), 16 states have internal predecessors, (162), 3 states have call successors, (63), 3 states have call predecessors, (63), 5 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2024-11-22 11:44:57,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:57,012 INFO L93 Difference]: Finished difference Result 11970 states and 17687 transitions. [2024-11-22 11:44:57,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-22 11:44:57,012 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.125) internal successors, (162), 16 states have internal predecessors, (162), 3 states have call successors, (63), 3 states have call predecessors, (63), 5 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 316 [2024-11-22 11:44:57,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:57,046 INFO L225 Difference]: With dead ends: 11970 [2024-11-22 11:44:57,046 INFO L226 Difference]: Without dead ends: 9010 [2024-11-22 11:44:57,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 626 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=487, Invalid=1675, Unknown=0, NotChecked=0, Total=2162 [2024-11-22 11:44:57,061 INFO L432 NwaCegarLoop]: 383 mSDtfsCounter, 1449 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 1901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:57,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 2478 Invalid, 1901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 11:44:57,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9010 states. [2024-11-22 11:44:57,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9010 to 5179. [2024-11-22 11:44:57,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 3926 states have (on average 1.3499745287824758) internal successors, (5300), 3956 states have internal predecessors, (5300), 1171 states have call successors, (1171), 81 states have call predecessors, (1171), 81 states have return successors, (1171), 1141 states have call predecessors, (1171), 1171 states have call successors, (1171) [2024-11-22 11:44:57,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 7642 transitions. [2024-11-22 11:44:57,418 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 7642 transitions. Word has length 316 [2024-11-22 11:44:57,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:57,418 INFO L471 AbstractCegarLoop]: Abstraction has 5179 states and 7642 transitions. [2024-11-22 11:44:57,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.125) internal successors, (162), 16 states have internal predecessors, (162), 3 states have call successors, (63), 3 states have call predecessors, (63), 5 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2024-11-22 11:44:57,419 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 7642 transitions. [2024-11-22 11:44:57,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-22 11:44:57,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:57,423 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:57,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 11:44:57,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:44:57,624 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:57,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:57,625 INFO L85 PathProgramCache]: Analyzing trace with hash -831213479, now seen corresponding path program 1 times [2024-11-22 11:44:57,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:57,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743416285] [2024-11-22 11:44:57,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:57,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:58,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:44:58,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:58,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743416285] [2024-11-22 11:44:58,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743416285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:44:58,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:44:58,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:44:58,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316751029] [2024-11-22 11:44:58,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:44:58,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:44:58,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:58,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:44:58,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:44:58,171 INFO L87 Difference]: Start difference. First operand 5179 states and 7642 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:44:58,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:58,808 INFO L93 Difference]: Finished difference Result 8652 states and 12827 transitions. [2024-11-22 11:44:58,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:44:58,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 317 [2024-11-22 11:44:58,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:58,826 INFO L225 Difference]: With dead ends: 8652 [2024-11-22 11:44:58,826 INFO L226 Difference]: Without dead ends: 4441 [2024-11-22 11:44:58,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:44:58,838 INFO L432 NwaCegarLoop]: 693 mSDtfsCounter, 511 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:58,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1280 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 11:44:58,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4441 states. [2024-11-22 11:44:59,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4441 to 4140. [2024-11-22 11:44:59,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4140 states, 3142 states have (on average 1.3507320178230426) internal successors, (4244), 3159 states have internal predecessors, (4244), 930 states have call successors, (930), 67 states have call predecessors, (930), 67 states have return successors, (930), 913 states have call predecessors, (930), 930 states have call successors, (930) [2024-11-22 11:44:59,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4140 states to 4140 states and 6104 transitions. [2024-11-22 11:44:59,147 INFO L78 Accepts]: Start accepts. Automaton has 4140 states and 6104 transitions. Word has length 317 [2024-11-22 11:44:59,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:59,148 INFO L471 AbstractCegarLoop]: Abstraction has 4140 states and 6104 transitions. [2024-11-22 11:44:59,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:44:59,148 INFO L276 IsEmpty]: Start isEmpty. Operand 4140 states and 6104 transitions. [2024-11-22 11:44:59,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-22 11:44:59,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:59,152 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:59,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 11:44:59,153 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:59,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:59,153 INFO L85 PathProgramCache]: Analyzing trace with hash 62272859, now seen corresponding path program 1 times [2024-11-22 11:44:59,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:59,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031844581] [2024-11-22 11:44:59,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:59,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:00,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:45:00,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:45:00,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031844581] [2024-11-22 11:45:00,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031844581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:45:00,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:45:00,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 11:45:00,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285441968] [2024-11-22 11:45:00,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:45:00,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 11:45:00,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:45:00,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 11:45:00,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-22 11:45:00,090 INFO L87 Difference]: Start difference. First operand 4140 states and 6104 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:45:01,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:45:01,138 INFO L93 Difference]: Finished difference Result 12506 states and 18379 transitions. [2024-11-22 11:45:01,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 11:45:01,139 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 317 [2024-11-22 11:45:01,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:45:01,168 INFO L225 Difference]: With dead ends: 12506 [2024-11-22 11:45:01,168 INFO L226 Difference]: Without dead ends: 8768 [2024-11-22 11:45:01,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-22 11:45:01,183 INFO L432 NwaCegarLoop]: 510 mSDtfsCounter, 766 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 11:45:01,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 1417 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 11:45:01,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8768 states. [2024-11-22 11:45:01,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8768 to 6785. [2024-11-22 11:45:01,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6785 states, 5300 states have (on average 1.3569811320754717) internal successors, (7192), 5337 states have internal predecessors, (7192), 1396 states have call successors, (1396), 88 states have call predecessors, (1396), 88 states have return successors, (1396), 1359 states have call predecessors, (1396), 1396 states have call successors, (1396) [2024-11-22 11:45:01,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6785 states to 6785 states and 9984 transitions. [2024-11-22 11:45:01,685 INFO L78 Accepts]: Start accepts. Automaton has 6785 states and 9984 transitions. Word has length 317 [2024-11-22 11:45:01,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:45:01,685 INFO L471 AbstractCegarLoop]: Abstraction has 6785 states and 9984 transitions. [2024-11-22 11:45:01,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:45:01,686 INFO L276 IsEmpty]: Start isEmpty. Operand 6785 states and 9984 transitions. [2024-11-22 11:45:01,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-22 11:45:01,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:45:01,689 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:45:01,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 11:45:01,690 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:45:01,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:45:01,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1399730245, now seen corresponding path program 1 times [2024-11-22 11:45:01,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:45:01,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414397388] [2024-11-22 11:45:01,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:01,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:45:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:02,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:45:02,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:45:02,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414397388] [2024-11-22 11:45:02,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414397388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:45:02,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:45:02,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 11:45:02,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790127599] [2024-11-22 11:45:02,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:45:02,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 11:45:02,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:45:02,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 11:45:02,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-22 11:45:02,847 INFO L87 Difference]: Start difference. First operand 6785 states and 9984 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:45:04,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:45:04,269 INFO L93 Difference]: Finished difference Result 14207 states and 20838 transitions. [2024-11-22 11:45:04,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 11:45:04,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 317 [2024-11-22 11:45:04,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:45:04,301 INFO L225 Difference]: With dead ends: 14207 [2024-11-22 11:45:04,301 INFO L226 Difference]: Without dead ends: 9176 [2024-11-22 11:45:04,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-11-22 11:45:04,314 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 954 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 11:45:04,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 1682 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 11:45:04,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9176 states. [2024-11-22 11:45:04,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9176 to 6749. [2024-11-22 11:45:04,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6749 states, 5264 states have (on average 1.3571428571428572) internal successors, (7144), 5301 states have internal predecessors, (7144), 1396 states have call successors, (1396), 88 states have call predecessors, (1396), 88 states have return successors, (1396), 1359 states have call predecessors, (1396), 1396 states have call successors, (1396) [2024-11-22 11:45:04,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6749 states to 6749 states and 9936 transitions. [2024-11-22 11:45:04,990 INFO L78 Accepts]: Start accepts. Automaton has 6749 states and 9936 transitions. Word has length 317 [2024-11-22 11:45:04,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:45:04,991 INFO L471 AbstractCegarLoop]: Abstraction has 6749 states and 9936 transitions. [2024-11-22 11:45:04,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:45:04,992 INFO L276 IsEmpty]: Start isEmpty. Operand 6749 states and 9936 transitions. [2024-11-22 11:45:04,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-22 11:45:04,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:45:04,996 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:45:04,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 11:45:04,997 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:45:04,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:45:04,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1337690631, now seen corresponding path program 1 times [2024-11-22 11:45:04,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:45:04,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883513482] [2024-11-22 11:45:04,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:04,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:45:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:05,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 87 proven. 45 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2024-11-22 11:45:05,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:45:05,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883513482] [2024-11-22 11:45:05,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883513482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:45:05,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864272383] [2024-11-22 11:45:05,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:05,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:45:05,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:45:05,738 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:45:05,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 11:45:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:05,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-22 11:45:05,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:45:06,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1968 proven. 54 refuted. 0 times theorem prover too weak. 1938 trivial. 0 not checked. [2024-11-22 11:45:06,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:45:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 78 proven. 54 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2024-11-22 11:45:07,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864272383] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:45:07,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:45:07,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 23 [2024-11-22 11:45:07,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803458523] [2024-11-22 11:45:07,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:45:07,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 11:45:07,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:45:07,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 11:45:07,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2024-11-22 11:45:07,728 INFO L87 Difference]: Start difference. First operand 6749 states and 9936 transitions. Second operand has 23 states, 23 states have (on average 10.347826086956522) internal successors, (238), 23 states have internal predecessors, (238), 5 states have call successors, (108), 3 states have call predecessors, (108), 6 states have return successors, (109), 5 states have call predecessors, (109), 5 states have call successors, (109) [2024-11-22 11:45:10,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:45:10,431 INFO L93 Difference]: Finished difference Result 8245 states and 12085 transitions. [2024-11-22 11:45:10,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-22 11:45:10,431 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.347826086956522) internal successors, (238), 23 states have internal predecessors, (238), 5 states have call successors, (108), 3 states have call predecessors, (108), 6 states have return successors, (109), 5 states have call predecessors, (109), 5 states have call successors, (109) Word has length 317 [2024-11-22 11:45:10,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:45:10,443 INFO L225 Difference]: With dead ends: 8245 [2024-11-22 11:45:10,443 INFO L226 Difference]: Without dead ends: 2172 [2024-11-22 11:45:10,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=978, Invalid=3054, Unknown=0, NotChecked=0, Total=4032 [2024-11-22 11:45:10,456 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 2505 mSDsluCounter, 2609 mSDsCounter, 0 mSdLazyCounter, 2896 mSolverCounterSat, 1094 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2505 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 3990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1094 IncrementalHoareTripleChecker+Valid, 2896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-22 11:45:10,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2505 Valid, 3122 Invalid, 3990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1094 Valid, 2896 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-22 11:45:10,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2024-11-22 11:45:10,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1793. [2024-11-22 11:45:10,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1432 states have (on average 1.335195530726257) internal successors, (1912), 1442 states have internal predecessors, (1912), 333 states have call successors, (333), 27 states have call predecessors, (333), 27 states have return successors, (333), 323 states have call predecessors, (333), 333 states have call successors, (333) [2024-11-22 11:45:10,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2578 transitions. [2024-11-22 11:45:10,589 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2578 transitions. Word has length 317 [2024-11-22 11:45:10,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:45:10,590 INFO L471 AbstractCegarLoop]: Abstraction has 1793 states and 2578 transitions. [2024-11-22 11:45:10,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.347826086956522) internal successors, (238), 23 states have internal predecessors, (238), 5 states have call successors, (108), 3 states have call predecessors, (108), 6 states have return successors, (109), 5 states have call predecessors, (109), 5 states have call successors, (109) [2024-11-22 11:45:10,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2578 transitions. [2024-11-22 11:45:10,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-22 11:45:10,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:45:10,593 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:45:10,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 11:45:10,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-22 11:45:10,794 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:45:10,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:45:10,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1164203563, now seen corresponding path program 1 times [2024-11-22 11:45:10,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:45:10,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981586979] [2024-11-22 11:45:10,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:10,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:45:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 11:45:11,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1364805404] [2024-11-22 11:45:11,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:11,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:45:11,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:45:11,285 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:45:11,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 11:45:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:11,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-22 11:45:11,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:45:13,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 2579 proven. 378 refuted. 0 times theorem prover too weak. 1003 trivial. 0 not checked. [2024-11-22 11:45:13,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:45:14,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:45:14,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:45:14,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981586979] [2024-11-22 11:45:14,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 11:45:14,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364805404] [2024-11-22 11:45:14,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364805404] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 11:45:14,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:45:14,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [23] total 27 [2024-11-22 11:45:14,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746369359] [2024-11-22 11:45:14,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:45:14,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 11:45:14,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:45:14,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 11:45:14,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2024-11-22 11:45:14,009 INFO L87 Difference]: Start difference. First operand 1793 states and 2578 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:45:15,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:45:15,130 INFO L93 Difference]: Finished difference Result 8638 states and 12252 transitions. [2024-11-22 11:45:15,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 11:45:15,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 317 [2024-11-22 11:45:15,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:45:15,149 INFO L225 Difference]: With dead ends: 8638 [2024-11-22 11:45:15,149 INFO L226 Difference]: Without dead ends: 7153 [2024-11-22 11:45:15,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2024-11-22 11:45:15,154 INFO L432 NwaCegarLoop]: 381 mSDtfsCounter, 1164 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 11:45:15,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 916 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 11:45:15,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7153 states. [2024-11-22 11:45:15,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7153 to 3431. [2024-11-22 11:45:15,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 2773 states have (on average 1.3433104940497655) internal successors, (3725), 2795 states have internal predecessors, (3725), 609 states have call successors, (609), 48 states have call predecessors, (609), 48 states have return successors, (609), 587 states have call predecessors, (609), 609 states have call successors, (609) [2024-11-22 11:45:15,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 4943 transitions. [2024-11-22 11:45:15,439 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 4943 transitions. Word has length 317 [2024-11-22 11:45:15,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:45:15,440 INFO L471 AbstractCegarLoop]: Abstraction has 3431 states and 4943 transitions. [2024-11-22 11:45:15,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:45:15,440 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 4943 transitions. [2024-11-22 11:45:15,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-22 11:45:15,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:45:15,443 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:45:15,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 11:45:15,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-22 11:45:15,647 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:45:15,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:45:15,648 INFO L85 PathProgramCache]: Analyzing trace with hash 654730473, now seen corresponding path program 1 times [2024-11-22 11:45:15,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:45:15,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308312143] [2024-11-22 11:45:15,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:15,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:45:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 11:45:15,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897395954] [2024-11-22 11:45:15,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:15,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:45:15,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:45:15,995 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:45:15,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 11:45:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:16,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 11:45:16,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:45:16,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1752 proven. 90 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2024-11-22 11:45:16,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:45:17,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-22 11:45:17,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:45:17,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308312143] [2024-11-22 11:45:17,053 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 11:45:17,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897395954] [2024-11-22 11:45:17,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897395954] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 11:45:17,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:45:17,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2024-11-22 11:45:17,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312281171] [2024-11-22 11:45:17,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:45:17,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:45:17,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:45:17,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:45:17,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-22 11:45:17,055 INFO L87 Difference]: Start difference. First operand 3431 states and 4943 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:45:17,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:45:17,221 INFO L93 Difference]: Finished difference Result 4856 states and 7019 transitions. [2024-11-22 11:45:17,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:45:17,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 317 [2024-11-22 11:45:17,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:45:17,229 INFO L225 Difference]: With dead ends: 4856 [2024-11-22 11:45:17,229 INFO L226 Difference]: Without dead ends: 2409 [2024-11-22 11:45:17,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-22 11:45:17,232 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 71 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:45:17,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 504 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:45:17,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2409 states. [2024-11-22 11:45:17,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 1797. [2024-11-22 11:45:17,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1435 states have (on average 1.3303135888501743) internal successors, (1909), 1445 states have internal predecessors, (1909), 333 states have call successors, (333), 28 states have call predecessors, (333), 28 states have return successors, (333), 323 states have call predecessors, (333), 333 states have call successors, (333) [2024-11-22 11:45:17,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2575 transitions. [2024-11-22 11:45:17,377 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2575 transitions. Word has length 317 [2024-11-22 11:45:17,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:45:17,378 INFO L471 AbstractCegarLoop]: Abstraction has 1797 states and 2575 transitions. [2024-11-22 11:45:17,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-22 11:45:17,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2575 transitions. [2024-11-22 11:45:17,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-22 11:45:17,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:45:17,381 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:45:17,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 11:45:17,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:45:17,582 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:45:17,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:45:17,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1100459059, now seen corresponding path program 1 times [2024-11-22 11:45:17,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:45:17,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886681392] [2024-11-22 11:45:17,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:17,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:45:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 11:45:17,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630283432] [2024-11-22 11:45:17,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:17,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:45:17,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:45:17,876 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:45:17,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process