./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-9.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_fillercode_fillercodesize_ps-cn-250_file-9.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 e6ca059adc2ec28b7106763e3d6b1b450d19a4eff5f7716b68bbd37f426e2990 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 07:28:21,529 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 07:28:21,600 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 07:28:21,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 07:28:21,607 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 07:28:21,634 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 07:28:21,635 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 07:28:21,636 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 07:28:21,636 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 07:28:21,637 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 07:28:21,638 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 07:28:21,638 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 07:28:21,639 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 07:28:21,640 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 07:28:21,640 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 07:28:21,641 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 07:28:21,641 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 07:28:21,641 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 07:28:21,641 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 07:28:21,642 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 07:28:21,642 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 07:28:21,642 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 07:28:21,644 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 07:28:21,645 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 07:28:21,645 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 07:28:21,645 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 07:28:21,645 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 07:28:21,645 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 07:28:21,645 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 07:28:21,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 07:28:21,646 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 07:28:21,646 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 07:28:21,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 07:28:21,646 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 07:28:21,646 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 07:28:21,647 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 07:28:21,647 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 07:28:21,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 07:28:21,647 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 07:28:21,647 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 07:28:21,647 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 07:28:21,648 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 07:28:21,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6ca059adc2ec28b7106763e3d6b1b450d19a4eff5f7716b68bbd37f426e2990 [2024-11-22 07:28:21,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 07:28:21,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 07:28:21,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 07:28:21,893 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 07:28:21,893 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 07:28:21,894 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-9.i [2024-11-22 07:28:23,229 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 07:28:23,438 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 07:28:23,438 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-9.i [2024-11-22 07:28:23,453 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/941963eb5/0c5a61cc789d414594880a495552b015/FLAG18503bfb8 [2024-11-22 07:28:23,467 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/941963eb5/0c5a61cc789d414594880a495552b015 [2024-11-22 07:28:23,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 07:28:23,471 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 07:28:23,474 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 07:28:23,474 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 07:28:23,479 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 07:28:23,479 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:28:23" (1/1) ... [2024-11-22 07:28:23,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@413a3efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:28:23, skipping insertion in model container [2024-11-22 07:28:23,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:28:23" (1/1) ... [2024-11-22 07:28:23,518 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 07:28:23,684 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_fillercode_fillercodesize_ps-cn-250_file-9.i[915,928] [2024-11-22 07:28:23,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 07:28:23,828 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 07:28:23,840 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_fillercode_fillercodesize_ps-cn-250_file-9.i[915,928] [2024-11-22 07:28:23,902 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 07:28:23,926 INFO L204 MainTranslator]: Completed translation [2024-11-22 07:28:23,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:28:23 WrapperNode [2024-11-22 07:28:23,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 07:28:23,928 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 07:28:23,928 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 07:28:23,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 07:28:23,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:28:23" (1/1) ... [2024-11-22 07:28:23,947 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:28:23" (1/1) ... [2024-11-22 07:28:24,002 INFO L138 Inliner]: procedures = 26, calls = 90, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 550 [2024-11-22 07:28:24,003 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 07:28:24,004 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 07:28:24,004 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 07:28:24,004 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 07:28:24,020 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:28:23" (1/1) ... [2024-11-22 07:28:24,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:28:23" (1/1) ... [2024-11-22 07:28:24,026 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:28:23" (1/1) ... [2024-11-22 07:28:24,049 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 07:28:24,049 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:28:23" (1/1) ... [2024-11-22 07:28:24,049 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:28:23" (1/1) ... [2024-11-22 07:28:24,066 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:28:23" (1/1) ... [2024-11-22 07:28:24,071 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:28:23" (1/1) ... [2024-11-22 07:28:24,076 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:28:23" (1/1) ... [2024-11-22 07:28:24,080 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:28:23" (1/1) ... [2024-11-22 07:28:24,087 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 07:28:24,089 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 07:28:24,089 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 07:28:24,089 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 07:28:24,090 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:28:23" (1/1) ... [2024-11-22 07:28:24,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 07:28:24,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:28:24,129 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 07:28:24,132 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 07:28:24,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 07:28:24,175 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 07:28:24,176 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 07:28:24,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 07:28:24,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 07:28:24,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 07:28:24,289 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 07:28:24,291 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 07:28:24,991 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-22 07:28:24,991 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 07:28:25,004 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 07:28:25,005 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 07:28:25,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:28:25 BoogieIcfgContainer [2024-11-22 07:28:25,005 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 07:28:25,007 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 07:28:25,007 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 07:28:25,010 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 07:28:25,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 07:28:23" (1/3) ... [2024-11-22 07:28:25,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eaf6d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:28:25, skipping insertion in model container [2024-11-22 07:28:25,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:28:23" (2/3) ... [2024-11-22 07:28:25,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eaf6d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:28:25, skipping insertion in model container [2024-11-22 07:28:25,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:28:25" (3/3) ... [2024-11-22 07:28:25,012 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-9.i [2024-11-22 07:28:25,027 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 07:28:25,027 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 07:28:25,139 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 07:28:25,147 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;@7342fc67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 07:28:25,148 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 07:28:25,175 INFO L276 IsEmpty]: Start isEmpty. Operand has 236 states, 156 states have (on average 1.5192307692307692) internal successors, (237), 157 states have internal predecessors, (237), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-22 07:28:25,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2024-11-22 07:28:25,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:28:25,204 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:25,204 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:28:25,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:28:25,209 INFO L85 PathProgramCache]: Analyzing trace with hash -420921185, now seen corresponding path program 1 times [2024-11-22 07:28:25,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:28:25,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285651332] [2024-11-22 07:28:25,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:28:25,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:28:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:28:25,712 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2024-11-22 07:28:25,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:28:25,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285651332] [2024-11-22 07:28:25,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285651332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:28:25,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410252367] [2024-11-22 07:28:25,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:28:25,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:28:25,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:28:25,718 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 07:28:25,719 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 07:28:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:28:25,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 07:28:26,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:28:26,085 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2024-11-22 07:28:26,085 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 07:28:26,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410252367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:28:26,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 07:28:26,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 07:28:26,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447170054] [2024-11-22 07:28:26,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:28:26,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 07:28:26,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:28:26,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 07:28:26,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 07:28:26,120 INFO L87 Difference]: Start difference. First operand has 236 states, 156 states have (on average 1.5192307692307692) internal successors, (237), 157 states have internal predecessors, (237), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) Second operand has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) [2024-11-22 07:28:26,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:28:26,185 INFO L93 Difference]: Finished difference Result 465 states and 853 transitions. [2024-11-22 07:28:26,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 07:28:26,188 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) Word has length 484 [2024-11-22 07:28:26,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:28:26,198 INFO L225 Difference]: With dead ends: 465 [2024-11-22 07:28:26,198 INFO L226 Difference]: Without dead ends: 232 [2024-11-22 07:28:26,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 485 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 07:28:26,210 INFO L432 NwaCegarLoop]: 382 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, 382 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 07:28:26,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:28:26,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-22 07:28:26,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-11-22 07:28:26,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 153 states have (on average 1.4901960784313726) internal successors, (228), 153 states have internal predecessors, (228), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-22 07:28:26,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 382 transitions. [2024-11-22 07:28:26,281 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 382 transitions. Word has length 484 [2024-11-22 07:28:26,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:28:26,282 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 382 transitions. [2024-11-22 07:28:26,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) [2024-11-22 07:28:26,284 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 382 transitions. [2024-11-22 07:28:26,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2024-11-22 07:28:26,292 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:28:26,293 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:26,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 07:28:26,493 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 07:28:26,494 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:28:26,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:28:26,495 INFO L85 PathProgramCache]: Analyzing trace with hash -777922655, now seen corresponding path program 1 times [2024-11-22 07:28:26,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:28:26,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557274046] [2024-11-22 07:28:26,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:28:26,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:28:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:28:26,865 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:28:26,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:28:26,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557274046] [2024-11-22 07:28:26,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557274046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:28:26,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:28:26,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:28:26,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833119258] [2024-11-22 07:28:26,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:28:26,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:28:26,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:28:26,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:28:26,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:28:26,874 INFO L87 Difference]: Start difference. First operand 232 states and 382 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:28:26,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:28:26,917 INFO L93 Difference]: Finished difference Result 462 states and 763 transitions. [2024-11-22 07:28:26,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:28:26,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 484 [2024-11-22 07:28:26,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:28:26,925 INFO L225 Difference]: With dead ends: 462 [2024-11-22 07:28:26,925 INFO L226 Difference]: Without dead ends: 233 [2024-11-22 07:28:26,926 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 07:28:26,927 INFO L432 NwaCegarLoop]: 381 mSDtfsCounter, 0 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:28:26,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 757 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:28:26,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-22 07:28:26,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2024-11-22 07:28:26,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 154 states have (on average 1.4870129870129871) internal successors, (229), 154 states have internal predecessors, (229), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-22 07:28:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 383 transitions. [2024-11-22 07:28:26,957 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 383 transitions. Word has length 484 [2024-11-22 07:28:26,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:28:26,962 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 383 transitions. [2024-11-22 07:28:26,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:28:26,962 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 383 transitions. [2024-11-22 07:28:26,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2024-11-22 07:28:26,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:28:26,969 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:26,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 07:28:26,969 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:28:26,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:28:26,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1717066450, now seen corresponding path program 1 times [2024-11-22 07:28:26,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:28:26,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287685462] [2024-11-22 07:28:26,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:28:26,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:28:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:28:28,341 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:28:28,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:28:28,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287685462] [2024-11-22 07:28:28,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287685462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:28:28,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:28:28,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 07:28:28,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822257351] [2024-11-22 07:28:28,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:28:28,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 07:28:28,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:28:28,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 07:28:28,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 07:28:28,345 INFO L87 Difference]: Start difference. First operand 233 states and 383 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:28:30,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:28:30,401 INFO L93 Difference]: Finished difference Result 1843 states and 3043 transitions. [2024-11-22 07:28:30,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 07:28:30,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 485 [2024-11-22 07:28:30,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:28:30,415 INFO L225 Difference]: With dead ends: 1843 [2024-11-22 07:28:30,415 INFO L226 Difference]: Without dead ends: 1613 [2024-11-22 07:28:30,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 07:28:30,418 INFO L432 NwaCegarLoop]: 727 mSDtfsCounter, 2306 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2306 SdHoareTripleChecker+Valid, 2948 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-22 07:28:30,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2306 Valid, 2948 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-22 07:28:30,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2024-11-22 07:28:30,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1571. [2024-11-22 07:28:30,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1024 states have (on average 1.4873046875) internal successors, (1523), 1024 states have internal predecessors, (1523), 539 states have call successors, (539), 7 states have call predecessors, (539), 7 states have return successors, (539), 539 states have call predecessors, (539), 539 states have call successors, (539) [2024-11-22 07:28:30,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2601 transitions. [2024-11-22 07:28:30,639 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2601 transitions. Word has length 485 [2024-11-22 07:28:30,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:28:30,640 INFO L471 AbstractCegarLoop]: Abstraction has 1571 states and 2601 transitions. [2024-11-22 07:28:30,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:28:30,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2601 transitions. [2024-11-22 07:28:30,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-22 07:28:30,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:28:30,648 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:30,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 07:28:30,648 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:28:30,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:28:30,649 INFO L85 PathProgramCache]: Analyzing trace with hash -524886948, now seen corresponding path program 1 times [2024-11-22 07:28:30,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:28:30,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508170934] [2024-11-22 07:28:30,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:28:30,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:28:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:28:30,859 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:28:30,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:28:30,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508170934] [2024-11-22 07:28:30,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508170934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:28:30,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:28:30,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 07:28:30,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381793454] [2024-11-22 07:28:30,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:28:30,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 07:28:30,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:28:30,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 07:28:30,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 07:28:30,863 INFO L87 Difference]: Start difference. First operand 1571 states and 2601 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:28:31,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:28:31,264 INFO L93 Difference]: Finished difference Result 6372 states and 10560 transitions. [2024-11-22 07:28:31,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 07:28:31,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 486 [2024-11-22 07:28:31,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:28:31,290 INFO L225 Difference]: With dead ends: 6372 [2024-11-22 07:28:31,290 INFO L226 Difference]: Without dead ends: 4804 [2024-11-22 07:28:31,297 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 07:28:31,297 INFO L432 NwaCegarLoop]: 746 mSDtfsCounter, 926 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 07:28:31,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 2030 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 07:28:31,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4804 states. [2024-11-22 07:28:31,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4804 to 4785. [2024-11-22 07:28:31,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4785 states, 3432 states have (on average 1.5273892773892774) internal successors, (5242), 3445 states have internal predecessors, (5242), 1325 states have call successors, (1325), 27 states have call predecessors, (1325), 27 states have return successors, (1325), 1312 states have call predecessors, (1325), 1325 states have call successors, (1325) [2024-11-22 07:28:31,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4785 states to 4785 states and 7892 transitions. [2024-11-22 07:28:31,747 INFO L78 Accepts]: Start accepts. Automaton has 4785 states and 7892 transitions. Word has length 486 [2024-11-22 07:28:31,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:28:31,748 INFO L471 AbstractCegarLoop]: Abstraction has 4785 states and 7892 transitions. [2024-11-22 07:28:31,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:28:31,749 INFO L276 IsEmpty]: Start isEmpty. Operand 4785 states and 7892 transitions. [2024-11-22 07:28:31,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-22 07:28:31,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:28:31,755 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:31,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 07:28:31,756 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:28:31,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:28:31,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2001275329, now seen corresponding path program 1 times [2024-11-22 07:28:31,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:28:31,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590762195] [2024-11-22 07:28:31,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:28:31,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:28:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:28:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 33 proven. 195 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-22 07:28:36,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:28:36,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590762195] [2024-11-22 07:28:36,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590762195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:28:36,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944243091] [2024-11-22 07:28:36,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:28:36,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:28:36,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:28:36,530 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 07:28:36,531 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 07:28:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:28:36,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 07:28:36,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:28:37,992 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 1228 proven. 228 refuted. 0 times theorem prover too weak. 10248 trivial. 0 not checked. [2024-11-22 07:28:37,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:28:38,506 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-22 07:28:38,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944243091] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:28:38,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:28:38,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 19 [2024-11-22 07:28:38,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944650231] [2024-11-22 07:28:38,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:28:38,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 07:28:38,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:28:38,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 07:28:38,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-22 07:28:38,510 INFO L87 Difference]: Start difference. First operand 4785 states and 7892 transitions. Second operand has 19 states, 19 states have (on average 15.263157894736842) internal successors, (290), 19 states have internal predecessors, (290), 7 states have call successors, (230), 3 states have call predecessors, (230), 5 states have return successors, (231), 6 states have call predecessors, (231), 7 states have call successors, (231) [2024-11-22 07:28:41,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:28:41,037 INFO L93 Difference]: Finished difference Result 11677 states and 18807 transitions. [2024-11-22 07:28:41,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 07:28:41,039 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 15.263157894736842) internal successors, (290), 19 states have internal predecessors, (290), 7 states have call successors, (230), 3 states have call predecessors, (230), 5 states have return successors, (231), 6 states have call predecessors, (231), 7 states have call successors, (231) Word has length 486 [2024-11-22 07:28:41,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:28:41,076 INFO L225 Difference]: With dead ends: 11677 [2024-11-22 07:28:41,076 INFO L226 Difference]: Without dead ends: 6895 [2024-11-22 07:28:41,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 994 GetRequests, 969 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2024-11-22 07:28:41,091 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 827 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-22 07:28:41,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 1557 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-22 07:28:41,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6895 states. [2024-11-22 07:28:41,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6895 to 4893. [2024-11-22 07:28:41,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4893 states, 3513 states have (on average 1.5075434101907201) internal successors, (5296), 3526 states have internal predecessors, (5296), 1325 states have call successors, (1325), 54 states have call predecessors, (1325), 54 states have return successors, (1325), 1312 states have call predecessors, (1325), 1325 states have call successors, (1325) [2024-11-22 07:28:41,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4893 states to 4893 states and 7946 transitions. [2024-11-22 07:28:41,633 INFO L78 Accepts]: Start accepts. Automaton has 4893 states and 7946 transitions. Word has length 486 [2024-11-22 07:28:41,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:28:41,634 INFO L471 AbstractCegarLoop]: Abstraction has 4893 states and 7946 transitions. [2024-11-22 07:28:41,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.263157894736842) internal successors, (290), 19 states have internal predecessors, (290), 7 states have call successors, (230), 3 states have call predecessors, (230), 5 states have return successors, (231), 6 states have call predecessors, (231), 7 states have call successors, (231) [2024-11-22 07:28:41,635 INFO L276 IsEmpty]: Start isEmpty. Operand 4893 states and 7946 transitions. [2024-11-22 07:28:41,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-22 07:28:41,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:28:41,639 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:41,652 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 07:28:41,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:28:41,841 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:28:41,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:28:41,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1272623613, now seen corresponding path program 1 times [2024-11-22 07:28:41,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:28:41,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19972807] [2024-11-22 07:28:41,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:28:41,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:28:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:28:44,411 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 33 proven. 195 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-22 07:28:44,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:28:44,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19972807] [2024-11-22 07:28:44,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19972807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:28:44,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379102590] [2024-11-22 07:28:44,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:28:44,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:28:44,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:28:44,414 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 07:28:44,415 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 07:28:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:28:44,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 07:28:44,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:28:45,050 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 5688 proven. 90 refuted. 0 times theorem prover too weak. 5926 trivial. 0 not checked. [2024-11-22 07:28:45,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:28:45,563 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 138 proven. 90 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-22 07:28:45,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379102590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:28:45,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 07:28:45,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 15 [2024-11-22 07:28:45,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957753591] [2024-11-22 07:28:45,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 07:28:45,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 07:28:45,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:28:45,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 07:28:45,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-11-22 07:28:45,566 INFO L87 Difference]: Start difference. First operand 4893 states and 7946 transitions. Second operand has 15 states, 15 states have (on average 12.4) internal successors, (186), 15 states have internal predecessors, (186), 2 states have call successors, (137), 2 states have call predecessors, (137), 4 states have return successors, (140), 2 states have call predecessors, (140), 2 states have call successors, (140) [2024-11-22 07:28:51,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:28:51,041 INFO L93 Difference]: Finished difference Result 25764 states and 40601 transitions. [2024-11-22 07:28:51,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-22 07:28:51,042 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 12.4) internal successors, (186), 15 states have internal predecessors, (186), 2 states have call successors, (137), 2 states have call predecessors, (137), 4 states have return successors, (140), 2 states have call predecessors, (140), 2 states have call successors, (140) Word has length 486 [2024-11-22 07:28:51,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:28:51,137 INFO L225 Difference]: With dead ends: 25764 [2024-11-22 07:28:51,137 INFO L226 Difference]: Without dead ends: 20874 [2024-11-22 07:28:51,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1016 GetRequests, 972 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=387, Invalid=1593, Unknown=0, NotChecked=0, Total=1980 [2024-11-22 07:28:51,158 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 2448 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 776 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2496 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 2073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 776 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-22 07:28:51,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2496 Valid, 1907 Invalid, 2073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [776 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-22 07:28:51,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20874 states. [2024-11-22 07:28:52,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20874 to 6407. [2024-11-22 07:28:52,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6407 states, 5013 states have (on average 1.531019349690804) internal successors, (7675), 5026 states have internal predecessors, (7675), 1325 states have call successors, (1325), 68 states have call predecessors, (1325), 68 states have return successors, (1325), 1312 states have call predecessors, (1325), 1325 states have call successors, (1325) [2024-11-22 07:28:52,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6407 states to 6407 states and 10325 transitions. [2024-11-22 07:28:52,356 INFO L78 Accepts]: Start accepts. Automaton has 6407 states and 10325 transitions. Word has length 486 [2024-11-22 07:28:52,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:28:52,357 INFO L471 AbstractCegarLoop]: Abstraction has 6407 states and 10325 transitions. [2024-11-22 07:28:52,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.4) internal successors, (186), 15 states have internal predecessors, (186), 2 states have call successors, (137), 2 states have call predecessors, (137), 4 states have return successors, (140), 2 states have call predecessors, (140), 2 states have call successors, (140) [2024-11-22 07:28:52,361 INFO L276 IsEmpty]: Start isEmpty. Operand 6407 states and 10325 transitions. [2024-11-22 07:28:52,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-22 07:28:52,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:28:52,367 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:52,377 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 07:28:52,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:28:52,569 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:28:52,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:28:52,569 INFO L85 PathProgramCache]: Analyzing trace with hash -488706687, now seen corresponding path program 1 times [2024-11-22 07:28:52,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:28:52,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122860584] [2024-11-22 07:28:52,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:28:52,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:28:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:28:55,220 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 33 proven. 195 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-22 07:28:55,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:28:55,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122860584] [2024-11-22 07:28:55,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122860584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:28:55,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028504086] [2024-11-22 07:28:55,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:28:55,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:28:55,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:28:55,223 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 07:28:55,224 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 07:28:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:28:55,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 07:28:55,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:28:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:28:55,724 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 07:28:55,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028504086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:28:55,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 07:28:55,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-11-22 07:28:55,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543758199] [2024-11-22 07:28:55,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:28:55,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 07:28:55,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:28:55,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 07:28:55,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-11-22 07:28:55,727 INFO L87 Difference]: Start difference. First operand 6407 states and 10325 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:28:56,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:28:56,377 INFO L93 Difference]: Finished difference Result 15409 states and 24268 transitions. [2024-11-22 07:28:56,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 07:28:56,378 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 486 [2024-11-22 07:28:56,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:28:56,407 INFO L225 Difference]: With dead ends: 15409 [2024-11-22 07:28:56,407 INFO L226 Difference]: Without dead ends: 9005 [2024-11-22 07:28:56,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-22 07:28:56,422 INFO L432 NwaCegarLoop]: 404 mSDtfsCounter, 178 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1925 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 07:28:56,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1925 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 07:28:56,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9005 states. [2024-11-22 07:28:57,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9005 to 8459. [2024-11-22 07:28:57,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8459 states, 6876 states have (on average 1.4970913321698662) internal successors, (10294), 6916 states have internal predecessors, (10294), 1460 states have call successors, (1460), 122 states have call predecessors, (1460), 122 states have return successors, (1460), 1420 states have call predecessors, (1460), 1460 states have call successors, (1460) [2024-11-22 07:28:57,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8459 states to 8459 states and 13214 transitions. [2024-11-22 07:28:57,038 INFO L78 Accepts]: Start accepts. Automaton has 8459 states and 13214 transitions. Word has length 486 [2024-11-22 07:28:57,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:28:57,039 INFO L471 AbstractCegarLoop]: Abstraction has 8459 states and 13214 transitions. [2024-11-22 07:28:57,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:28:57,040 INFO L276 IsEmpty]: Start isEmpty. Operand 8459 states and 13214 transitions. [2024-11-22 07:28:57,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-22 07:28:57,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:28:57,045 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:57,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 07:28:57,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:28:57,246 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:28:57,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:28:57,246 INFO L85 PathProgramCache]: Analyzing trace with hash -837758120, now seen corresponding path program 1 times [2024-11-22 07:28:57,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:28:57,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184681155] [2024-11-22 07:28:57,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:28:57,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:28:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:28:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 33 proven. 195 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-22 07:28:59,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:28:59,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184681155] [2024-11-22 07:28:59,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184681155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:28:59,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870914316] [2024-11-22 07:28:59,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:28:59,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:28:59,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:28:59,579 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 07:28:59,580 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 07:28:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:28:59,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 07:28:59,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:28:59,997 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:28:59,998 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 07:28:59,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870914316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:28:59,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 07:28:59,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 13 [2024-11-22 07:28:59,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278154517] [2024-11-22 07:28:59,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:28:59,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 07:28:59,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:28:59,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 07:29:00,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-22 07:29:00,000 INFO L87 Difference]: Start difference. First operand 8459 states and 13214 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:29:00,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:29:00,546 INFO L93 Difference]: Finished difference Result 17351 states and 26994 transitions. [2024-11-22 07:29:00,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 07:29:00,547 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 486 [2024-11-22 07:29:00,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:29:00,576 INFO L225 Difference]: With dead ends: 17351 [2024-11-22 07:29:00,576 INFO L226 Difference]: Without dead ends: 8895 [2024-11-22 07:29:00,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 484 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-22 07:29:00,596 INFO L432 NwaCegarLoop]: 411 mSDtfsCounter, 107 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 07:29:00,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 1942 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 07:29:00,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8895 states. [2024-11-22 07:29:01,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8895 to 7919. [2024-11-22 07:29:01,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7919 states, 6336 states have (on average 1.4925820707070707) internal successors, (9457), 6376 states have internal predecessors, (9457), 1460 states have call successors, (1460), 122 states have call predecessors, (1460), 122 states have return successors, (1460), 1420 states have call predecessors, (1460), 1460 states have call successors, (1460) [2024-11-22 07:29:01,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7919 states to 7919 states and 12377 transitions. [2024-11-22 07:29:01,318 INFO L78 Accepts]: Start accepts. Automaton has 7919 states and 12377 transitions. Word has length 486 [2024-11-22 07:29:01,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:29:01,319 INFO L471 AbstractCegarLoop]: Abstraction has 7919 states and 12377 transitions. [2024-11-22 07:29:01,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:29:01,319 INFO L276 IsEmpty]: Start isEmpty. Operand 7919 states and 12377 transitions. [2024-11-22 07:29:01,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-22 07:29:01,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:29:01,324 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:01,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 07:29:01,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:29:01,525 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:29:01,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:29:01,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1622938881, now seen corresponding path program 1 times [2024-11-22 07:29:01,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:29:01,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081827735] [2024-11-22 07:29:01,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:29:01,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:29:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:29:02,987 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 33 proven. 195 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-22 07:29:02,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:29:02,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081827735] [2024-11-22 07:29:02,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081827735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:29:02,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298960687] [2024-11-22 07:29:02,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:29:02,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:29:02,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:29:02,990 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 07:29:02,991 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 07:29:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:29:03,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 07:29:03,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:29:04,050 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 3172 proven. 192 refuted. 0 times theorem prover too weak. 8340 trivial. 0 not checked. [2024-11-22 07:29:04,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:29:04,854 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:29:04,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298960687] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 07:29:04,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 07:29:04,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 11] total 21 [2024-11-22 07:29:04,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006915096] [2024-11-22 07:29:04,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:29:04,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 07:29:04,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:29:04,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 07:29:04,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2024-11-22 07:29:04,856 INFO L87 Difference]: Start difference. First operand 7919 states and 12377 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:29:06,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:29:06,227 INFO L93 Difference]: Finished difference Result 19084 states and 29454 transitions. [2024-11-22 07:29:06,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 07:29:06,228 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 486 [2024-11-22 07:29:06,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:29:06,256 INFO L225 Difference]: With dead ends: 19084 [2024-11-22 07:29:06,257 INFO L226 Difference]: Without dead ends: 11168 [2024-11-22 07:29:06,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 965 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2024-11-22 07:29:06,271 INFO L432 NwaCegarLoop]: 429 mSDtfsCounter, 281 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 07:29:06,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 2058 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 07:29:06,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11168 states. [2024-11-22 07:29:06,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11168 to 8513. [2024-11-22 07:29:06,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8513 states, 6930 states have (on average 1.4932178932178932) internal successors, (10348), 6970 states have internal predecessors, (10348), 1460 states have call successors, (1460), 122 states have call predecessors, (1460), 122 states have return successors, (1460), 1420 states have call predecessors, (1460), 1460 states have call successors, (1460) [2024-11-22 07:29:06,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8513 states to 8513 states and 13268 transitions. [2024-11-22 07:29:06,828 INFO L78 Accepts]: Start accepts. Automaton has 8513 states and 13268 transitions. Word has length 486 [2024-11-22 07:29:06,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:29:06,828 INFO L471 AbstractCegarLoop]: Abstraction has 8513 states and 13268 transitions. [2024-11-22 07:29:06,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:29:06,829 INFO L276 IsEmpty]: Start isEmpty. Operand 8513 states and 13268 transitions. [2024-11-22 07:29:06,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-22 07:29:06,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:29:06,835 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:06,844 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 07:29:07,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:29:07,037 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:29:07,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:29:07,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1273887448, now seen corresponding path program 1 times [2024-11-22 07:29:07,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:29:07,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324554650] [2024-11-22 07:29:07,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:29:07,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:29:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:29:08,168 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 33 proven. 195 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-22 07:29:08,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:29:08,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324554650] [2024-11-22 07:29:08,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324554650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:29:08,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380947344] [2024-11-22 07:29:08,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:29:08,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:29:08,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:29:08,170 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 07:29:08,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 07:29:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:29:08,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 07:29:08,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:29:09,247 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 3172 proven. 192 refuted. 0 times theorem prover too weak. 8340 trivial. 0 not checked. [2024-11-22 07:29:09,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:29:10,184 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:29:10,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380947344] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 07:29:10,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 07:29:10,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 11] total 21 [2024-11-22 07:29:10,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061812801] [2024-11-22 07:29:10,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:29:10,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 07:29:10,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:29:10,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 07:29:10,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2024-11-22 07:29:10,186 INFO L87 Difference]: Start difference. First operand 8513 states and 13268 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:29:11,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:29:11,583 INFO L93 Difference]: Finished difference Result 19840 states and 30561 transitions. [2024-11-22 07:29:11,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 07:29:11,584 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 486 [2024-11-22 07:29:11,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:29:11,618 INFO L225 Difference]: With dead ends: 19840 [2024-11-22 07:29:11,618 INFO L226 Difference]: Without dead ends: 11330 [2024-11-22 07:29:11,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 987 GetRequests, 963 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2024-11-22 07:29:11,637 INFO L432 NwaCegarLoop]: 415 mSDtfsCounter, 257 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1973 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 07:29:11,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1973 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 07:29:11,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11330 states. [2024-11-22 07:29:12,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11330 to 8567. [2024-11-22 07:29:12,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8567 states, 6984 states have (on average 1.493270332187858) internal successors, (10429), 7024 states have internal predecessors, (10429), 1460 states have call successors, (1460), 122 states have call predecessors, (1460), 122 states have return successors, (1460), 1420 states have call predecessors, (1460), 1460 states have call successors, (1460) [2024-11-22 07:29:12,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8567 states to 8567 states and 13349 transitions. [2024-11-22 07:29:12,239 INFO L78 Accepts]: Start accepts. Automaton has 8567 states and 13349 transitions. Word has length 486 [2024-11-22 07:29:12,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:29:12,240 INFO L471 AbstractCegarLoop]: Abstraction has 8567 states and 13349 transitions. [2024-11-22 07:29:12,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:29:12,240 INFO L276 IsEmpty]: Start isEmpty. Operand 8567 states and 13349 transitions. [2024-11-22 07:29:12,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-22 07:29:12,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:29:12,246 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:12,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 07:29:12,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:29:12,447 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:29:12,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:29:12,447 INFO L85 PathProgramCache]: Analyzing trace with hash -66004861, now seen corresponding path program 1 times [2024-11-22 07:29:12,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:29:12,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914939550] [2024-11-22 07:29:12,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:29:12,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:29:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:29:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 33 proven. 195 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-22 07:29:13,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:29:13,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914939550] [2024-11-22 07:29:13,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914939550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:29:13,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847544304] [2024-11-22 07:29:13,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:29:13,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:29:13,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:29:13,754 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:29:13,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 07:29:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:29:13,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-22 07:29:13,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:29:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 1701 proven. 846 refuted. 0 times theorem prover too weak. 9157 trivial. 0 not checked. [2024-11-22 07:29:16,279 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:29:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:29:17,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847544304] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 07:29:17,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 07:29:17,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 20] total 30 [2024-11-22 07:29:17,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887007607] [2024-11-22 07:29:17,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:29:17,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 07:29:17,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:29:17,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 07:29:17,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2024-11-22 07:29:17,267 INFO L87 Difference]: Start difference. First operand 8567 states and 13349 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:29:19,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:29:19,051 INFO L93 Difference]: Finished difference Result 19921 states and 30669 transitions. [2024-11-22 07:29:19,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 07:29:19,052 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 486 [2024-11-22 07:29:19,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:29:19,085 INFO L225 Difference]: With dead ends: 19921 [2024-11-22 07:29:19,085 INFO L226 Difference]: Without dead ends: 11357 [2024-11-22 07:29:19,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 986 GetRequests, 954 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=200, Invalid=922, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 07:29:19,104 INFO L432 NwaCegarLoop]: 458 mSDtfsCounter, 184 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-22 07:29:19,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 2085 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-22 07:29:19,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11357 states. [2024-11-22 07:29:19,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11357 to 8540. [2024-11-22 07:29:19,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8540 states, 6957 states have (on average 1.495184706051459) internal successors, (10402), 6997 states have internal predecessors, (10402), 1460 states have call successors, (1460), 122 states have call predecessors, (1460), 122 states have return successors, (1460), 1420 states have call predecessors, (1460), 1460 states have call successors, (1460) [2024-11-22 07:29:19,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8540 states to 8540 states and 13322 transitions. [2024-11-22 07:29:19,732 INFO L78 Accepts]: Start accepts. Automaton has 8540 states and 13322 transitions. Word has length 486 [2024-11-22 07:29:19,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:29:19,733 INFO L471 AbstractCegarLoop]: Abstraction has 8540 states and 13322 transitions. [2024-11-22 07:29:19,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:29:19,733 INFO L276 IsEmpty]: Start isEmpty. Operand 8540 states and 13322 transitions. [2024-11-22 07:29:19,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-22 07:29:19,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:29:19,739 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:19,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 07:29:19,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-22 07:29:19,940 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:29:19,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:29:19,940 INFO L85 PathProgramCache]: Analyzing trace with hash -415056294, now seen corresponding path program 1 times [2024-11-22 07:29:19,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:29:19,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110732103] [2024-11-22 07:29:19,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:29:19,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:29:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:29:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 33 proven. 195 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-22 07:29:21,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:29:21,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110732103] [2024-11-22 07:29:21,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110732103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 07:29:21,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600715242] [2024-11-22 07:29:21,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:29:21,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:29:21,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:29:21,296 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:29:21,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 07:29:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:29:21,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 07:29:21,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:29:21,834 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:29:21,834 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 07:29:21,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600715242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:29:21,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 07:29:21,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 13 [2024-11-22 07:29:21,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660399018] [2024-11-22 07:29:21,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:29:21,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 07:29:21,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:29:21,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 07:29:21,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-22 07:29:21,837 INFO L87 Difference]: Start difference. First operand 8540 states and 13322 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:29:22,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:29:22,354 INFO L93 Difference]: Finished difference Result 18054 states and 28021 transitions. [2024-11-22 07:29:22,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 07:29:22,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 486 [2024-11-22 07:29:22,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:29:22,385 INFO L225 Difference]: With dead ends: 18054 [2024-11-22 07:29:22,385 INFO L226 Difference]: Without dead ends: 9517 [2024-11-22 07:29:22,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-22 07:29:22,403 INFO L432 NwaCegarLoop]: 448 mSDtfsCounter, 91 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 07:29:22,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1373 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 07:29:22,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9517 states. [2024-11-22 07:29:22,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9517 to 7973. [2024-11-22 07:29:22,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7973 states, 6390 states have (on average 1.4884194053208137) internal successors, (9511), 6430 states have internal predecessors, (9511), 1460 states have call successors, (1460), 122 states have call predecessors, (1460), 122 states have return successors, (1460), 1420 states have call predecessors, (1460), 1460 states have call successors, (1460) [2024-11-22 07:29:22,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7973 states to 7973 states and 12431 transitions. [2024-11-22 07:29:22,986 INFO L78 Accepts]: Start accepts. Automaton has 7973 states and 12431 transitions. Word has length 486 [2024-11-22 07:29:22,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:29:22,987 INFO L471 AbstractCegarLoop]: Abstraction has 7973 states and 12431 transitions. [2024-11-22 07:29:22,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:29:22,987 INFO L276 IsEmpty]: Start isEmpty. Operand 7973 states and 12431 transitions. [2024-11-22 07:29:22,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2024-11-22 07:29:22,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:29:22,992 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:23,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 07:29:23,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:29:23,193 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:29:23,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:29:23,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1828134426, now seen corresponding path program 1 times [2024-11-22 07:29:23,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:29:23,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240492747] [2024-11-22 07:29:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:29:23,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:29:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 07:29:23,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029764123] [2024-11-22 07:29:23,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:29:23,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 07:29:23,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 07:29:23,335 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 07:29:23,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 07:29:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:29:23,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 07:29:23,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 07:29:24,008 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 1236 proven. 216 refuted. 0 times theorem prover too weak. 10252 trivial. 0 not checked. [2024-11-22 07:29:24,009 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 07:29:24,364 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 12 proven. 216 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-22 07:29:24,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:29:24,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240492747] [2024-11-22 07:29:24,365 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 07:29:24,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029764123] [2024-11-22 07:29:24,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029764123] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 07:29:24,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 07:29:24,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-22 07:29:24,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735996519] [2024-11-22 07:29:24,366 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 07:29:24,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 07:29:24,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:29:24,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 07:29:24,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-11-22 07:29:24,368 INFO L87 Difference]: Start difference. First operand 7973 states and 12431 transitions. Second operand has 16 states, 16 states have (on average 12.5625) internal successors, (201), 16 states have internal predecessors, (201), 3 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) [2024-11-22 07:29:26,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:29:26,006 INFO L93 Difference]: Finished difference Result 21131 states and 31503 transitions. [2024-11-22 07:29:26,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 07:29:26,007 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.5625) internal successors, (201), 16 states have internal predecessors, (201), 3 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) Word has length 488 [2024-11-22 07:29:26,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:29:26,043 INFO L225 Difference]: With dead ends: 21131 [2024-11-22 07:29:26,044 INFO L226 Difference]: Without dead ends: 13161 [2024-11-22 07:29:26,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 984 GetRequests, 960 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2024-11-22 07:29:26,062 INFO L432 NwaCegarLoop]: 331 mSDtfsCounter, 233 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:29:26,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 1954 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 07:29:26,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13161 states. [2024-11-22 07:29:26,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13161 to 8135. [2024-11-22 07:29:26,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8135 states, 6606 states have (on average 1.4765364819860733) internal successors, (9754), 6646 states have internal predecessors, (9754), 1379 states have call successors, (1379), 149 states have call predecessors, (1379), 149 states have return successors, (1379), 1339 states have call predecessors, (1379), 1379 states have call successors, (1379) [2024-11-22 07:29:26,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8135 states to 8135 states and 12512 transitions. [2024-11-22 07:29:26,651 INFO L78 Accepts]: Start accepts. Automaton has 8135 states and 12512 transitions. Word has length 488 [2024-11-22 07:29:26,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:29:26,652 INFO L471 AbstractCegarLoop]: Abstraction has 8135 states and 12512 transitions. [2024-11-22 07:29:26,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.5625) internal successors, (201), 16 states have internal predecessors, (201), 3 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) [2024-11-22 07:29:26,652 INFO L276 IsEmpty]: Start isEmpty. Operand 8135 states and 12512 transitions. [2024-11-22 07:29:26,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2024-11-22 07:29:26,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:29:26,657 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:26,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-22 07:29:26,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 07:29:26,858 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:29:26,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:29:26,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1397156401, now seen corresponding path program 1 times [2024-11-22 07:29:26,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:29:26,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381461134] [2024-11-22 07:29:26,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:29:26,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:29:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:29:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:29:26,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:29:26,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381461134] [2024-11-22 07:29:26,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381461134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:29:26,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:29:26,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 07:29:26,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583200230] [2024-11-22 07:29:26,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:29:26,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 07:29:26,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:29:26,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 07:29:26,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 07:29:26,958 INFO L87 Difference]: Start difference. First operand 8135 states and 12512 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:29:27,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:29:27,617 INFO L93 Difference]: Finished difference Result 21456 states and 33345 transitions. [2024-11-22 07:29:27,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 07:29:27,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 488 [2024-11-22 07:29:27,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:29:27,648 INFO L225 Difference]: With dead ends: 21456 [2024-11-22 07:29:27,648 INFO L226 Difference]: Without dead ends: 13324 [2024-11-22 07:29:27,659 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 07:29:27,660 INFO L432 NwaCegarLoop]: 392 mSDtfsCounter, 362 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 07:29:27,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 752 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 07:29:27,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13324 states. [2024-11-22 07:29:28,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13324 to 10842. [2024-11-22 07:29:28,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10842 states, 7866 states have (on average 1.3967709127892194) internal successors, (10987), 7933 states have internal predecessors, (10987), 2704 states have call successors, (2704), 271 states have call predecessors, (2704), 271 states have return successors, (2704), 2637 states have call predecessors, (2704), 2704 states have call successors, (2704) [2024-11-22 07:29:28,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10842 states to 10842 states and 16395 transitions. [2024-11-22 07:29:28,700 INFO L78 Accepts]: Start accepts. Automaton has 10842 states and 16395 transitions. Word has length 488 [2024-11-22 07:29:28,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:29:28,701 INFO L471 AbstractCegarLoop]: Abstraction has 10842 states and 16395 transitions. [2024-11-22 07:29:28,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:29:28,701 INFO L276 IsEmpty]: Start isEmpty. Operand 10842 states and 16395 transitions. [2024-11-22 07:29:28,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2024-11-22 07:29:28,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:29:28,705 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:28,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 07:29:28,706 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:29:28,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:29:28,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1698921681, now seen corresponding path program 1 times [2024-11-22 07:29:28,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:29:28,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156090861] [2024-11-22 07:29:28,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:29:28,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:29:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:29:29,520 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:29:29,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:29:29,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156090861] [2024-11-22 07:29:29,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156090861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:29:29,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:29:29,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 07:29:29,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380268550] [2024-11-22 07:29:29,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:29:29,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 07:29:29,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:29:29,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 07:29:29,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 07:29:29,522 INFO L87 Difference]: Start difference. First operand 10842 states and 16395 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:29:31,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:29:31,812 INFO L93 Difference]: Finished difference Result 33675 states and 48099 transitions. [2024-11-22 07:29:31,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 07:29:31,813 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 488 [2024-11-22 07:29:31,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:29:31,893 INFO L225 Difference]: With dead ends: 33675 [2024-11-22 07:29:31,894 INFO L226 Difference]: Without dead ends: 22836 [2024-11-22 07:29:31,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-22 07:29:31,921 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 171 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 07:29:31,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2370 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 07:29:31,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22836 states. [2024-11-22 07:29:33,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22836 to 16377. [2024-11-22 07:29:33,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16377 states, 12510 states have (on average 1.363868904876099) internal successors, (17062), 12658 states have internal predecessors, (17062), 3352 states have call successors, (3352), 514 states have call predecessors, (3352), 514 states have return successors, (3352), 3204 states have call predecessors, (3352), 3352 states have call successors, (3352) [2024-11-22 07:29:33,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16377 states to 16377 states and 23766 transitions. [2024-11-22 07:29:33,453 INFO L78 Accepts]: Start accepts. Automaton has 16377 states and 23766 transitions. Word has length 488 [2024-11-22 07:29:33,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 07:29:33,454 INFO L471 AbstractCegarLoop]: Abstraction has 16377 states and 23766 transitions. [2024-11-22 07:29:33,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:29:33,454 INFO L276 IsEmpty]: Start isEmpty. Operand 16377 states and 23766 transitions. [2024-11-22 07:29:33,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2024-11-22 07:29:33,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 07:29:33,461 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:33,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 07:29:33,461 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 07:29:33,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 07:29:33,462 INFO L85 PathProgramCache]: Analyzing trace with hash 2121623507, now seen corresponding path program 1 times [2024-11-22 07:29:33,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 07:29:33,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949145463] [2024-11-22 07:29:33,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 07:29:33,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 07:29:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 07:29:33,979 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-22 07:29:33,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 07:29:33,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949145463] [2024-11-22 07:29:33,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949145463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 07:29:33,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 07:29:33,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 07:29:33,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714261802] [2024-11-22 07:29:33,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 07:29:33,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 07:29:33,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 07:29:33,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 07:29:33,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 07:29:33,981 INFO L87 Difference]: Start difference. First operand 16377 states and 23766 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-22 07:29:36,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 07:29:36,963 INFO L93 Difference]: Finished difference Result 48992 states and 70267 transitions. [2024-11-22 07:29:36,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 07:29:36,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 488 [2024-11-22 07:29:36,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 07:29:37,069 INFO L225 Difference]: With dead ends: 48992 [2024-11-22 07:29:37,069 INFO L226 Difference]: Without dead ends: 32618 [2024-11-22 07:29:37,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 07:29:37,111 INFO L432 NwaCegarLoop]: 707 mSDtfsCounter, 392 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 07:29:37,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 2505 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 07:29:37,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32618 states.