./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-86.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-86.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 c3ee8afe098f9cee5b6405d2c58537794155bf2d3eb94d980df01b95a4a7b9e4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 19:36:46,485 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 19:36:46,560 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 19:36:46,565 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 19:36:46,566 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 19:36:46,597 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 19:36:46,598 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 19:36:46,598 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 19:36:46,599 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 19:36:46,600 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 19:36:46,601 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 19:36:46,601 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 19:36:46,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 19:36:46,604 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 19:36:46,604 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 19:36:46,605 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 19:36:46,605 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 19:36:46,605 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 19:36:46,606 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 19:36:46,606 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 19:36:46,606 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 19:36:46,609 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 19:36:46,610 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 19:36:46,610 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 19:36:46,610 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 19:36:46,610 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 19:36:46,611 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 19:36:46,611 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 19:36:46,611 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 19:36:46,612 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 19:36:46,612 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 19:36:46,612 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 19:36:46,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:36:46,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 19:36:46,614 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 19:36:46,614 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 19:36:46,615 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 19:36:46,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 19:36:46,615 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 19:36:46,615 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 19:36:46,616 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 19:36:46,616 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 19:36:46,616 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3ee8afe098f9cee5b6405d2c58537794155bf2d3eb94d980df01b95a4a7b9e4 [2024-11-18 19:36:46,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 19:36:46,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 19:36:46,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 19:36:46,903 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 19:36:46,903 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 19:36:46,904 INFO L431 ainManager$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-86.i [2024-11-18 19:36:48,394 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 19:36:48,631 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 19:36:48,632 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-86.i [2024-11-18 19:36:48,646 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44cc5261a/502680a97d9742d2baeee8e5c1408304/FLAG3310799db [2024-11-18 19:36:48,960 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44cc5261a/502680a97d9742d2baeee8e5c1408304 [2024-11-18 19:36:48,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 19:36:48,964 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 19:36:48,965 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 19:36:48,966 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 19:36:48,970 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 19:36:48,971 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:36:48" (1/1) ... [2024-11-18 19:36:48,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e11c823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:48, skipping insertion in model container [2024-11-18 19:36:48,972 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:36:48" (1/1) ... [2024-11-18 19:36:49,018 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 19:36:49,223 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-86.i[916,929] [2024-11-18 19:36:49,396 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:36:49,416 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 19:36:49,427 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-86.i[916,929] [2024-11-18 19:36:49,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:36:49,625 INFO L204 MainTranslator]: Completed translation [2024-11-18 19:36:49,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:49 WrapperNode [2024-11-18 19:36:49,626 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 19:36:49,627 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 19:36:49,627 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 19:36:49,627 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 19:36:49,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:49" (1/1) ... [2024-11-18 19:36:49,655 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:49" (1/1) ... [2024-11-18 19:36:49,725 INFO L138 Inliner]: procedures = 26, calls = 82, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 539 [2024-11-18 19:36:49,725 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 19:36:49,726 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 19:36:49,726 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 19:36:49,727 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 19:36:49,739 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:49" (1/1) ... [2024-11-18 19:36:49,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:49" (1/1) ... [2024-11-18 19:36:49,747 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:49" (1/1) ... [2024-11-18 19:36:49,789 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 19:36:49,790 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:49" (1/1) ... [2024-11-18 19:36:49,790 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:49" (1/1) ... [2024-11-18 19:36:49,810 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:49" (1/1) ... [2024-11-18 19:36:49,816 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:49" (1/1) ... [2024-11-18 19:36:49,821 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:49" (1/1) ... [2024-11-18 19:36:49,827 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:49" (1/1) ... [2024-11-18 19:36:49,835 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 19:36:49,836 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 19:36:49,836 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 19:36:49,836 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 19:36:49,837 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:49" (1/1) ... [2024-11-18 19:36:49,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:36:49,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:36:49,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 19:36:49,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 19:36:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 19:36:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 19:36:49,934 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 19:36:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 19:36:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 19:36:49,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 19:36:50,079 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 19:36:50,082 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 19:36:51,162 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-11-18 19:36:51,162 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 19:36:51,187 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 19:36:51,191 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 19:36:51,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:36:51 BoogieIcfgContainer [2024-11-18 19:36:51,192 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 19:36:51,194 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 19:36:51,194 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 19:36:51,198 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 19:36:51,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:36:48" (1/3) ... [2024-11-18 19:36:51,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b5337c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:36:51, skipping insertion in model container [2024-11-18 19:36:51,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:49" (2/3) ... [2024-11-18 19:36:51,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b5337c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:36:51, skipping insertion in model container [2024-11-18 19:36:51,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:36:51" (3/3) ... [2024-11-18 19:36:51,200 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-86.i [2024-11-18 19:36:51,219 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 19:36:51,219 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 19:36:51,303 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 19:36:51,313 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;@2acf9f3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 19:36:51,313 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 19:36:51,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 223 states, 151 states have (on average 1.5629139072847682) internal successors, (236), 152 states have internal predecessors, (236), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2024-11-18 19:36:51,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-11-18 19:36:51,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:36:51,345 INFO L215 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:36:51,345 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:36:51,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:36:51,352 INFO L85 PathProgramCache]: Analyzing trace with hash 24089275, now seen corresponding path program 1 times [2024-11-18 19:36:51,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:36:51,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48736115] [2024-11-18 19:36:51,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:51,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:36:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2024-11-18 19:36:51,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:36:51,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48736115] [2024-11-18 19:36:51,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48736115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:36:51,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623504811] [2024-11-18 19:36:51,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:51,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:36:51,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:36:51,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 19:36:51,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 19:36:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:52,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 19:36:52,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:36:52,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2024-11-18 19:36:52,394 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 19:36:52,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623504811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:36:52,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:36:52,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 19:36:52,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579917377] [2024-11-18 19:36:52,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:36:52,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 19:36:52,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:36:52,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 19:36:52,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:36:52,441 INFO L87 Difference]: Start difference. First operand has 223 states, 151 states have (on average 1.5629139072847682) internal successors, (236), 152 states have internal predecessors, (236), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) Second operand has 2 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) [2024-11-18 19:36:52,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:36:52,496 INFO L93 Difference]: Finished difference Result 438 states and 809 transitions. [2024-11-18 19:36:52,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 19:36:52,499 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) Word has length 441 [2024-11-18 19:36:52,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:36:52,508 INFO L225 Difference]: With dead ends: 438 [2024-11-18 19:36:52,509 INFO L226 Difference]: Without dead ends: 218 [2024-11-18 19:36:52,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:36:52,517 INFO L432 NwaCegarLoop]: 362 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, 362 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 [2024-11-18 19:36:52,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:36:52,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-18 19:36:52,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2024-11-18 19:36:52,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 147 states have (on average 1.5238095238095237) internal successors, (224), 147 states have internal predecessors, (224), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2024-11-18 19:36:52,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 362 transitions. [2024-11-18 19:36:52,603 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 362 transitions. Word has length 441 [2024-11-18 19:36:52,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:36:52,604 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 362 transitions. [2024-11-18 19:36:52,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) [2024-11-18 19:36:52,605 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 362 transitions. [2024-11-18 19:36:52,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-11-18 19:36:52,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:36:52,616 INFO L215 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:36:52,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 19:36:52,820 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 [2024-11-18 19:36:52,821 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:36:52,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:36:52,822 INFO L85 PathProgramCache]: Analyzing trace with hash -2071486591, now seen corresponding path program 1 times [2024-11-18 19:36:52,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:36:52,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193708143] [2024-11-18 19:36:52,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:52,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:36:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:53,388 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2024-11-18 19:36:53,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:36:53,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193708143] [2024-11-18 19:36:53,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193708143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:36:53,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:36:53,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:36:53,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059812612] [2024-11-18 19:36:53,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:36:53,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:36:53,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:36:53,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:36:53,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:36:53,396 INFO L87 Difference]: Start difference. First operand 218 states and 362 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2024-11-18 19:36:53,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:36:53,471 INFO L93 Difference]: Finished difference Result 562 states and 938 transitions. [2024-11-18 19:36:53,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:36:53,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 441 [2024-11-18 19:36:53,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:36:53,480 INFO L225 Difference]: With dead ends: 562 [2024-11-18 19:36:53,481 INFO L226 Difference]: Without dead ends: 347 [2024-11-18 19:36:53,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:36:53,484 INFO L432 NwaCegarLoop]: 541 mSDtfsCounter, 209 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:36:53,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 891 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:36:53,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-18 19:36:53,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 344. [2024-11-18 19:36:53,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 257 states have (on average 1.583657587548638) internal successors, (407), 258 states have internal predecessors, (407), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 83 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-18 19:36:53,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 575 transitions. [2024-11-18 19:36:53,530 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 575 transitions. Word has length 441 [2024-11-18 19:36:53,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:36:53,533 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 575 transitions. [2024-11-18 19:36:53,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2024-11-18 19:36:53,536 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 575 transitions. [2024-11-18 19:36:53,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-11-18 19:36:53,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:36:53,543 INFO L215 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:36:53,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 19:36:53,543 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:36:53,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:36:53,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1676547843, now seen corresponding path program 1 times [2024-11-18 19:36:53,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:36:53,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156267353] [2024-11-18 19:36:53,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:53,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:36:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:53,862 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2024-11-18 19:36:53,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:36:53,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156267353] [2024-11-18 19:36:53,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156267353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:36:53,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:36:53,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:36:53,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477820434] [2024-11-18 19:36:53,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:36:53,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:36:53,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:36:53,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:36:53,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:36:53,869 INFO L87 Difference]: Start difference. First operand 344 states and 575 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2024-11-18 19:36:53,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:36:53,988 INFO L93 Difference]: Finished difference Result 1020 states and 1707 transitions. [2024-11-18 19:36:53,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:36:53,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 441 [2024-11-18 19:36:53,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:36:54,001 INFO L225 Difference]: With dead ends: 1020 [2024-11-18 19:36:54,002 INFO L226 Difference]: Without dead ends: 679 [2024-11-18 19:36:54,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:36:54,005 INFO L432 NwaCegarLoop]: 606 mSDtfsCounter, 330 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:36:54,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 952 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 19:36:54,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2024-11-18 19:36:54,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 677. [2024-11-18 19:36:54,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 504 states have (on average 1.5595238095238095) internal successors, (786), 506 states have internal predecessors, (786), 168 states have call successors, (168), 4 states have call predecessors, (168), 4 states have return successors, (168), 166 states have call predecessors, (168), 168 states have call successors, (168) [2024-11-18 19:36:54,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1122 transitions. [2024-11-18 19:36:54,108 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1122 transitions. Word has length 441 [2024-11-18 19:36:54,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:36:54,111 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 1122 transitions. [2024-11-18 19:36:54,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2024-11-18 19:36:54,111 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1122 transitions. [2024-11-18 19:36:54,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-11-18 19:36:54,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:36:54,118 INFO L215 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:36:54,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 19:36:54,118 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:36:54,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:36:54,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1882317445, now seen corresponding path program 1 times [2024-11-18 19:36:54,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:36:54,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051949188] [2024-11-18 19:36:54,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:54,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:36:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2024-11-18 19:36:54,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:36:54,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051949188] [2024-11-18 19:36:54,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051949188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:36:54,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:36:54,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 19:36:54,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040255797] [2024-11-18 19:36:54,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:36:54,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 19:36:54,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:36:54,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 19:36:54,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 19:36:54,945 INFO L87 Difference]: Start difference. First operand 677 states and 1122 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2024-11-18 19:36:56,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:36:56,095 INFO L93 Difference]: Finished difference Result 2935 states and 4868 transitions. [2024-11-18 19:36:56,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 19:36:56,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 441 [2024-11-18 19:36:56,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:36:56,125 INFO L225 Difference]: With dead ends: 2935 [2024-11-18 19:36:56,125 INFO L226 Difference]: Without dead ends: 2261 [2024-11-18 19:36:56,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 19:36:56,134 INFO L432 NwaCegarLoop]: 550 mSDtfsCounter, 1079 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 19:36:56,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 1875 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 19:36:56,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2024-11-18 19:36:56,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 1755. [2024-11-18 19:36:56,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1332 states have (on average 1.5735735735735736) internal successors, (2096), 1342 states have internal predecessors, (2096), 408 states have call successors, (408), 14 states have call predecessors, (408), 14 states have return successors, (408), 398 states have call predecessors, (408), 408 states have call successors, (408) [2024-11-18 19:36:56,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2912 transitions. [2024-11-18 19:36:56,364 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2912 transitions. Word has length 441 [2024-11-18 19:36:56,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:36:56,366 INFO L471 AbstractCegarLoop]: Abstraction has 1755 states and 2912 transitions. [2024-11-18 19:36:56,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2024-11-18 19:36:56,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2912 transitions. [2024-11-18 19:36:56,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-11-18 19:36:56,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:36:56,373 INFO L215 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:36:56,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 19:36:56,373 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:36:56,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:36:56,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1180717571, now seen corresponding path program 1 times [2024-11-18 19:36:56,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:36:56,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138926306] [2024-11-18 19:36:56,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:56,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:36:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2024-11-18 19:36:59,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:36:59,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138926306] [2024-11-18 19:36:59,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138926306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:36:59,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:36:59,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 19:36:59,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885372030] [2024-11-18 19:36:59,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:36:59,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 19:36:59,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:36:59,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 19:36:59,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 19:36:59,191 INFO L87 Difference]: Start difference. First operand 1755 states and 2912 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 2 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2024-11-18 19:37:00,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:37:00,650 INFO L93 Difference]: Finished difference Result 6287 states and 10419 transitions. [2024-11-18 19:37:00,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 19:37:00,653 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 2 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) Word has length 441 [2024-11-18 19:37:00,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:37:00,684 INFO L225 Difference]: With dead ends: 6287 [2024-11-18 19:37:00,684 INFO L226 Difference]: Without dead ends: 4535 [2024-11-18 19:37:00,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-18 19:37:00,693 INFO L432 NwaCegarLoop]: 497 mSDtfsCounter, 851 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:37:00,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 1229 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 19:37:00,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4535 states. [2024-11-18 19:37:01,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4535 to 4497. [2024-11-18 19:37:01,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4497 states, 3598 states have (on average 1.5969983324068928) internal successors, (5746), 3632 states have internal predecessors, (5746), 852 states have call successors, (852), 46 states have call predecessors, (852), 46 states have return successors, (852), 818 states have call predecessors, (852), 852 states have call successors, (852) [2024-11-18 19:37:01,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4497 states to 4497 states and 7450 transitions. [2024-11-18 19:37:01,249 INFO L78 Accepts]: Start accepts. Automaton has 4497 states and 7450 transitions. Word has length 441 [2024-11-18 19:37:01,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:37:01,250 INFO L471 AbstractCegarLoop]: Abstraction has 4497 states and 7450 transitions. [2024-11-18 19:37:01,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 2 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2024-11-18 19:37:01,252 INFO L276 IsEmpty]: Start isEmpty. Operand 4497 states and 7450 transitions. [2024-11-18 19:37:01,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-11-18 19:37:01,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:37:01,263 INFO L215 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:37:01,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 19:37:01,264 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:37:01,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:37:01,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1533805953, now seen corresponding path program 1 times [2024-11-18 19:37:01,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:37:01,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865264252] [2024-11-18 19:37:01,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:37:01,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:37:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:37:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2024-11-18 19:37:02,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:37:02,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865264252] [2024-11-18 19:37:02,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865264252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:37:02,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:37:02,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 19:37:02,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341384795] [2024-11-18 19:37:02,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:37:02,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 19:37:02,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:37:02,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 19:37:02,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 19:37:02,154 INFO L87 Difference]: Start difference. First operand 4497 states and 7450 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 2 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2024-11-18 19:37:03,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:37:03,455 INFO L93 Difference]: Finished difference Result 13417 states and 22237 transitions. [2024-11-18 19:37:03,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 19:37:03,456 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 2 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) Word has length 441 [2024-11-18 19:37:03,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:37:03,507 INFO L225 Difference]: With dead ends: 13417 [2024-11-18 19:37:03,507 INFO L226 Difference]: Without dead ends: 8923 [2024-11-18 19:37:03,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-18 19:37:03,523 INFO L432 NwaCegarLoop]: 591 mSDtfsCounter, 684 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 19:37:03,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 1645 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 19:37:03,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8923 states. [2024-11-18 19:37:04,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8923 to 8867. [2024-11-18 19:37:04,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8867 states, 7036 states have (on average 1.5918135304150085) internal successors, (11200), 7104 states have internal predecessors, (11200), 1744 states have call successors, (1744), 86 states have call predecessors, (1744), 86 states have return successors, (1744), 1676 states have call predecessors, (1744), 1744 states have call successors, (1744) [2024-11-18 19:37:04,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8867 states to 8867 states and 14688 transitions. [2024-11-18 19:37:04,483 INFO L78 Accepts]: Start accepts. Automaton has 8867 states and 14688 transitions. Word has length 441 [2024-11-18 19:37:04,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:37:04,485 INFO L471 AbstractCegarLoop]: Abstraction has 8867 states and 14688 transitions. [2024-11-18 19:37:04,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 2 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2024-11-18 19:37:04,486 INFO L276 IsEmpty]: Start isEmpty. Operand 8867 states and 14688 transitions. [2024-11-18 19:37:04,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-11-18 19:37:04,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:37:04,507 INFO L215 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:37:04,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 19:37:04,508 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:37:04,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:37:04,509 INFO L85 PathProgramCache]: Analyzing trace with hash 222278071, now seen corresponding path program 1 times [2024-11-18 19:37:04,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:37:04,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394719064] [2024-11-18 19:37:04,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:37:04,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:37:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:37:05,077 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2024-11-18 19:37:05,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:37:05,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394719064] [2024-11-18 19:37:05,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394719064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:37:05,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:37:05,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:37:05,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160564699] [2024-11-18 19:37:05,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:37:05,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:37:05,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:37:05,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:37:05,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:37:05,080 INFO L87 Difference]: Start difference. First operand 8867 states and 14688 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2024-11-18 19:37:05,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:37:05,695 INFO L93 Difference]: Finished difference Result 17803 states and 29517 transitions. [2024-11-18 19:37:05,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:37:05,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 441 [2024-11-18 19:37:05,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:37:05,767 INFO L225 Difference]: With dead ends: 17803 [2024-11-18 19:37:05,767 INFO L226 Difference]: Without dead ends: 8939 [2024-11-18 19:37:05,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:37:05,801 INFO L432 NwaCegarLoop]: 361 mSDtfsCounter, 0 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:37:05,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 716 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:37:05,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8939 states. [2024-11-18 19:37:06,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8939 to 8939. [2024-11-18 19:37:06,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8939 states, 7108 states have (on average 1.585818795723129) internal successors, (11272), 7176 states have internal predecessors, (11272), 1744 states have call successors, (1744), 86 states have call predecessors, (1744), 86 states have return successors, (1744), 1676 states have call predecessors, (1744), 1744 states have call successors, (1744) [2024-11-18 19:37:06,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8939 states to 8939 states and 14760 transitions. [2024-11-18 19:37:06,541 INFO L78 Accepts]: Start accepts. Automaton has 8939 states and 14760 transitions. Word has length 441 [2024-11-18 19:37:06,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:37:06,542 INFO L471 AbstractCegarLoop]: Abstraction has 8939 states and 14760 transitions. [2024-11-18 19:37:06,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2024-11-18 19:37:06,545 INFO L276 IsEmpty]: Start isEmpty. Operand 8939 states and 14760 transitions. [2024-11-18 19:37:06,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2024-11-18 19:37:06,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:37:06,557 INFO L215 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:37:06,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 19:37:06,558 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:37:06,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:37:06,558 INFO L85 PathProgramCache]: Analyzing trace with hash 704594617, now seen corresponding path program 1 times [2024-11-18 19:37:06,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:37:06,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949509913] [2024-11-18 19:37:06,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:37:06,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:37:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:37:06,969 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2024-11-18 19:37:06,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:37:06,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949509913] [2024-11-18 19:37:06,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949509913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:37:06,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:37:06,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 19:37:06,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572429831] [2024-11-18 19:37:06,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:37:06,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 19:37:06,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:37:06,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 19:37:06,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 19:37:06,978 INFO L87 Difference]: Start difference. First operand 8939 states and 14760 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 2 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2024-11-18 19:37:08,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:37:08,701 INFO L93 Difference]: Finished difference Result 25269 states and 41734 transitions. [2024-11-18 19:37:08,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 19:37:08,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 2 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) Word has length 442 [2024-11-18 19:37:08,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:37:08,795 INFO L225 Difference]: With dead ends: 25269 [2024-11-18 19:37:08,795 INFO L226 Difference]: Without dead ends: 16333 [2024-11-18 19:37:08,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-18 19:37:08,838 INFO L432 NwaCegarLoop]: 387 mSDtfsCounter, 532 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 19:37:08,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1001 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 19:37:08,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16333 states. [2024-11-18 19:37:10,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16333 to 16295. [2024-11-18 19:37:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16295 states, 13240 states have (on average 1.5918429003021148) internal successors, (21076), 13380 states have internal predecessors, (21076), 2896 states have call successors, (2896), 158 states have call predecessors, (2896), 158 states have return successors, (2896), 2756 states have call predecessors, (2896), 2896 states have call successors, (2896) [2024-11-18 19:37:10,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16295 states to 16295 states and 26868 transitions. [2024-11-18 19:37:10,297 INFO L78 Accepts]: Start accepts. Automaton has 16295 states and 26868 transitions. Word has length 442 [2024-11-18 19:37:10,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:37:10,298 INFO L471 AbstractCegarLoop]: Abstraction has 16295 states and 26868 transitions. [2024-11-18 19:37:10,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 2 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2024-11-18 19:37:10,298 INFO L276 IsEmpty]: Start isEmpty. Operand 16295 states and 26868 transitions. [2024-11-18 19:37:10,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2024-11-18 19:37:10,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:37:10,320 INFO L215 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:37:10,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 19:37:10,321 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:37:10,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:37:10,322 INFO L85 PathProgramCache]: Analyzing trace with hash 2080798672, now seen corresponding path program 1 times [2024-11-18 19:37:10,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:37:10,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219173215] [2024-11-18 19:37:10,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:37:10,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:37:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:37:14,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2024-11-18 19:37:14,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:37:14,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219173215] [2024-11-18 19:37:14,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219173215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:37:14,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:37:14,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 19:37:14,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886938862] [2024-11-18 19:37:14,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:37:14,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 19:37:14,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:37:14,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 19:37:14,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-18 19:37:14,382 INFO L87 Difference]: Start difference. First operand 16295 states and 26868 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 3 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) [2024-11-18 19:37:20,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:37:20,654 INFO L93 Difference]: Finished difference Result 59734 states and 97970 transitions. [2024-11-18 19:37:20,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 19:37:20,656 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 3 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) Word has length 442 [2024-11-18 19:37:20,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:37:20,847 INFO L225 Difference]: With dead ends: 59734 [2024-11-18 19:37:20,848 INFO L226 Difference]: Without dead ends: 43442 [2024-11-18 19:37:20,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2024-11-18 19:37:20,925 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 1177 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:37:20,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 1440 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-18 19:37:20,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43442 states. [2024-11-18 19:37:25,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43442 to 43323. [2024-11-18 19:37:25,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43323 states, 34983 states have (on average 1.5766229311379814) internal successors, (55155), 35388 states have internal predecessors, (55155), 7809 states have call successors, (7809), 530 states have call predecessors, (7809), 530 states have return successors, (7809), 7404 states have call predecessors, (7809), 7809 states have call successors, (7809) [2024-11-18 19:37:25,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43323 states to 43323 states and 70773 transitions. [2024-11-18 19:37:25,643 INFO L78 Accepts]: Start accepts. Automaton has 43323 states and 70773 transitions. Word has length 442 [2024-11-18 19:37:25,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:37:25,644 INFO L471 AbstractCegarLoop]: Abstraction has 43323 states and 70773 transitions. [2024-11-18 19:37:25,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 3 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) [2024-11-18 19:37:25,645 INFO L276 IsEmpty]: Start isEmpty. Operand 43323 states and 70773 transitions. [2024-11-18 19:37:25,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2024-11-18 19:37:25,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:37:25,684 INFO L215 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:37:25,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 19:37:25,684 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:37:25,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:37:25,685 INFO L85 PathProgramCache]: Analyzing trace with hash 900388021, now seen corresponding path program 1 times [2024-11-18 19:37:25,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:37:25,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450225520] [2024-11-18 19:37:25,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:37:25,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:37:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:37:26,031 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2024-11-18 19:37:26,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:37:26,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450225520] [2024-11-18 19:37:26,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450225520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:37:26,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:37:26,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 19:37:26,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857088708] [2024-11-18 19:37:26,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:37:26,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 19:37:26,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:37:26,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 19:37:26,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 19:37:26,035 INFO L87 Difference]: Start difference. First operand 43323 states and 70773 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2024-11-18 19:37:34,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:37:34,563 INFO L93 Difference]: Finished difference Result 132757 states and 216180 transitions. [2024-11-18 19:37:34,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 19:37:34,564 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 442 [2024-11-18 19:37:34,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:37:35,114 INFO L225 Difference]: With dead ends: 132757 [2024-11-18 19:37:35,115 INFO L226 Difference]: Without dead ends: 89483 [2024-11-18 19:37:35,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-18 19:37:35,224 INFO L432 NwaCegarLoop]: 586 mSDtfsCounter, 1444 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 19:37:35,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1444 Valid, 2186 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 19:37:35,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89483 states. [2024-11-18 19:37:41,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89483 to 55051. [2024-11-18 19:37:41,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55051 states, 44351 states have (on average 1.573741291064463) internal successors, (69797), 44854 states have internal predecessors, (69797), 9967 states have call successors, (9967), 732 states have call predecessors, (9967), 732 states have return successors, (9967), 9464 states have call predecessors, (9967), 9967 states have call successors, (9967) [2024-11-18 19:37:41,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55051 states to 55051 states and 89731 transitions. [2024-11-18 19:37:41,759 INFO L78 Accepts]: Start accepts. Automaton has 55051 states and 89731 transitions. Word has length 442 [2024-11-18 19:37:41,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:37:41,760 INFO L471 AbstractCegarLoop]: Abstraction has 55051 states and 89731 transitions. [2024-11-18 19:37:41,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2024-11-18 19:37:41,760 INFO L276 IsEmpty]: Start isEmpty. Operand 55051 states and 89731 transitions. [2024-11-18 19:37:41,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2024-11-18 19:37:41,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:37:41,814 INFO L215 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:37:41,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 19:37:41,815 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:37:41,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:37:41,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1601987895, now seen corresponding path program 1 times [2024-11-18 19:37:41,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:37:41,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533648606] [2024-11-18 19:37:41,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:37:41,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:37:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:37:50,735 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2024-11-18 19:37:50,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:37:50,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533648606] [2024-11-18 19:37:50,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533648606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:37:50,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:37:50,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 19:37:50,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595277289] [2024-11-18 19:37:50,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:37:50,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 19:37:50,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:37:50,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 19:37:50,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-18 19:37:50,739 INFO L87 Difference]: Start difference. First operand 55051 states and 89731 transitions. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 3 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69)