./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-87.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-87.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 b5307a371ce4040b29e58213712f562a0e2a68de1ce11167436db0e47f91ed14 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 11:45:57,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 11:45:57,546 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 11:45:57,550 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 11:45:57,550 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 11:45:57,568 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 11:45:57,569 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 11:45:57,569 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 11:45:57,569 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 11:45:57,570 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 11:45:57,570 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 11:45:57,570 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 11:45:57,570 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 11:45:57,571 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 11:45:57,571 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 11:45:57,571 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 11:45:57,572 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 11:45:57,572 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 11:45:57,573 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 11:45:57,573 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 11:45:57,574 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 11:45:57,574 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 11:45:57,574 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 11:45:57,575 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 11:45:57,575 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 11:45:57,575 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 11:45:57,576 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 11:45:57,576 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 11:45:57,576 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 11:45:57,577 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 11:45:57,577 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 11:45:57,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 11:45:57,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:45:57,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 11:45:57,578 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 11:45:57,578 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 11:45:57,579 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 11:45:57,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 11:45:57,579 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 11:45:57,579 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 11:45:57,580 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 11:45:57,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 11:45:57,580 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5307a371ce4040b29e58213712f562a0e2a68de1ce11167436db0e47f91ed14 [2024-11-22 11:45:57,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 11:45:57,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 11:45:57,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 11:45:57,809 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 11:45:57,809 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 11:45:57,811 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-87.i [2024-11-22 11:45:59,167 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 11:45:59,344 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 11:45:59,344 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-87.i [2024-11-22 11:45:59,357 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08977fc5f/1f0aef1392414794b38753e8d015dd08/FLAG9467b352b [2024-11-22 11:45:59,370 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08977fc5f/1f0aef1392414794b38753e8d015dd08 [2024-11-22 11:45:59,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 11:45:59,373 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 11:45:59,374 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 11:45:59,375 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 11:45:59,379 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 11:45:59,379 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:45:59" (1/1) ... [2024-11-22 11:45:59,380 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48a53f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:59, skipping insertion in model container [2024-11-22 11:45:59,382 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:45:59" (1/1) ... [2024-11-22 11:45:59,411 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 11:45:59,545 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-87.i[916,929] [2024-11-22 11:45:59,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:45:59,714 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 11:45:59,724 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-87.i[916,929] [2024-11-22 11:45:59,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:45:59,806 INFO L204 MainTranslator]: Completed translation [2024-11-22 11:45:59,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:59 WrapperNode [2024-11-22 11:45:59,807 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 11:45:59,808 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 11:45:59,809 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 11:45:59,809 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 11:45:59,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:59" (1/1) ... [2024-11-22 11:45:59,829 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:59" (1/1) ... [2024-11-22 11:45:59,952 INFO L138 Inliner]: procedures = 26, calls = 75, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 485 [2024-11-22 11:45:59,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 11:45:59,957 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 11:45:59,959 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 11:45:59,959 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 11:45:59,970 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:59" (1/1) ... [2024-11-22 11:45:59,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:59" (1/1) ... [2024-11-22 11:45:59,986 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:59" (1/1) ... [2024-11-22 11:46:00,021 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 11:46:00,021 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:59" (1/1) ... [2024-11-22 11:46:00,021 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:59" (1/1) ... [2024-11-22 11:46:00,038 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:59" (1/1) ... [2024-11-22 11:46:00,042 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:59" (1/1) ... [2024-11-22 11:46:00,049 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:59" (1/1) ... [2024-11-22 11:46:00,054 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:59" (1/1) ... [2024-11-22 11:46:00,063 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 11:46:00,064 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 11:46:00,065 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 11:46:00,065 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 11:46:00,066 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:59" (1/1) ... [2024-11-22 11:46:00,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:46:00,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:46:00,094 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 11:46:00,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 11:46:00,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 11:46:00,131 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 11:46:00,131 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 11:46:00,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 11:46:00,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 11:46:00,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 11:46:00,224 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 11:46:00,226 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 11:46:00,939 INFO L? ?]: Removed 63 outVars from TransFormulas that were not future-live. [2024-11-22 11:46:00,939 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 11:46:00,957 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 11:46:00,958 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 11:46:00,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:46:00 BoogieIcfgContainer [2024-11-22 11:46:00,959 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 11:46:00,961 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 11:46:00,962 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 11:46:00,964 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 11:46:00,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:45:59" (1/3) ... [2024-11-22 11:46:00,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f888906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:46:00, skipping insertion in model container [2024-11-22 11:46:00,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:45:59" (2/3) ... [2024-11-22 11:46:00,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f888906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:46:00, skipping insertion in model container [2024-11-22 11:46:00,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:46:00" (3/3) ... [2024-11-22 11:46:00,967 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-87.i [2024-11-22 11:46:00,982 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 11:46:00,982 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 11:46:01,043 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 11:46:01,048 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;@25293e15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 11:46:01,048 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 11:46:01,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 136 states have (on average 1.4705882352941178) internal successors, (200), 137 states have internal predecessors, (200), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-22 11:46:01,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-11-22 11:46:01,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:46:01,073 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:46:01,074 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:46:01,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:46:01,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1023826491, now seen corresponding path program 1 times [2024-11-22 11:46:01,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:46:01,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756224599] [2024-11-22 11:46:01,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:46:01,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:46:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:46:01,556 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked. [2024-11-22 11:46:01,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:46:01,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756224599] [2024-11-22 11:46:01,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756224599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:46:01,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129773162] [2024-11-22 11:46:01,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:46:01,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:46:01,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:46:01,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:46:01,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 11:46:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:46:01,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 11:46:01,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:46:01,873 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked. [2024-11-22 11:46:01,873 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:46:01,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129773162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:46:01,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:46:01,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 11:46:01,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476641562] [2024-11-22 11:46:01,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:46:01,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 11:46:01,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:46:01,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 11:46:01,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:46:01,900 INFO L87 Difference]: Start difference. First operand has 201 states, 136 states have (on average 1.4705882352941178) internal successors, (200), 137 states have internal predecessors, (200), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-22 11:46:01,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:46:01,935 INFO L93 Difference]: Finished difference Result 395 states and 704 transitions. [2024-11-22 11:46:01,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 11:46:01,937 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 2 states have call successors, (62) Word has length 390 [2024-11-22 11:46:01,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:46:01,944 INFO L225 Difference]: With dead ends: 395 [2024-11-22 11:46:01,944 INFO L226 Difference]: Without dead ends: 197 [2024-11-22 11:46:01,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:46:01,952 INFO L432 NwaCegarLoop]: 317 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, 317 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:46:01,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:46:01,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-22 11:46:02,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2024-11-22 11:46:02,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 133 states have (on average 1.4511278195488722) internal successors, (193), 133 states have internal predecessors, (193), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-22 11:46:02,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 317 transitions. [2024-11-22 11:46:02,011 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 317 transitions. Word has length 390 [2024-11-22 11:46:02,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:46:02,012 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 317 transitions. [2024-11-22 11:46:02,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-22 11:46:02,014 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 317 transitions. [2024-11-22 11:46:02,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-11-22 11:46:02,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:46:02,019 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:46:02,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 11:46:02,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 11:46:02,221 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:46:02,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:46:02,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1427852779, now seen corresponding path program 1 times [2024-11-22 11:46:02,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:46:02,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777353220] [2024-11-22 11:46:02,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:46:02,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:46:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:46:02,512 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-22 11:46:02,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:46:02,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777353220] [2024-11-22 11:46:02,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777353220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:46:02,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:46:02,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:46:02,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777231761] [2024-11-22 11:46:02,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:46:02,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:46:02,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:46:02,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:46:02,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:46:02,515 INFO L87 Difference]: Start difference. First operand 197 states and 317 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 11:46:02,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:46:02,622 INFO L93 Difference]: Finished difference Result 576 states and 930 transitions. [2024-11-22 11:46:02,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:46:02,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 390 [2024-11-22 11:46:02,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:46:02,630 INFO L225 Difference]: With dead ends: 576 [2024-11-22 11:46:02,631 INFO L226 Difference]: Without dead ends: 382 [2024-11-22 11:46:02,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:46:02,633 INFO L432 NwaCegarLoop]: 596 mSDtfsCounter, 303 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:46:02,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 884 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:46:02,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2024-11-22 11:46:02,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 202. [2024-11-22 11:46:02,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 138 states have (on average 1.4492753623188406) internal successors, (200), 138 states have internal predecessors, (200), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-22 11:46:02,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 324 transitions. [2024-11-22 11:46:02,667 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 324 transitions. Word has length 390 [2024-11-22 11:46:02,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:46:02,670 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 324 transitions. [2024-11-22 11:46:02,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 11:46:02,670 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 324 transitions. [2024-11-22 11:46:02,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-11-22 11:46:02,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:46:02,676 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:46:02,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 11:46:02,676 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:46:02,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:46:02,678 INFO L85 PathProgramCache]: Analyzing trace with hash -768321257, now seen corresponding path program 1 times [2024-11-22 11:46:02,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:46:02,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129509650] [2024-11-22 11:46:02,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:46:02,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:46:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:46:03,453 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-22 11:46:03,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:46:03,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129509650] [2024-11-22 11:46:03,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129509650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:46:03,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:46:03,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:46:03,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625675774] [2024-11-22 11:46:03,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:46:03,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:46:03,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:46:03,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:46:03,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:46:03,459 INFO L87 Difference]: Start difference. First operand 202 states and 324 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 11:46:03,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:46:03,728 INFO L93 Difference]: Finished difference Result 616 states and 981 transitions. [2024-11-22 11:46:03,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:46:03,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 390 [2024-11-22 11:46:03,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:46:03,732 INFO L225 Difference]: With dead ends: 616 [2024-11-22 11:46:03,732 INFO L226 Difference]: Without dead ends: 417 [2024-11-22 11:46:03,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:46:03,734 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 446 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:46:03,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 712 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:46:03,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-11-22 11:46:03,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 346. [2024-11-22 11:46:03,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 269 states have (on average 1.5092936802973977) internal successors, (406), 270 states have internal predecessors, (406), 74 states have call successors, (74), 2 states have call predecessors, (74), 2 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-22 11:46:03,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 554 transitions. [2024-11-22 11:46:03,773 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 554 transitions. Word has length 390 [2024-11-22 11:46:03,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:46:03,775 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 554 transitions. [2024-11-22 11:46:03,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 11:46:03,776 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 554 transitions. [2024-11-22 11:46:03,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-11-22 11:46:03,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:46:03,778 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:46:03,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 11:46:03,779 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:46:03,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:46:03,781 INFO L85 PathProgramCache]: Analyzing trace with hash -493561643, now seen corresponding path program 1 times [2024-11-22 11:46:03,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:46:03,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245044019] [2024-11-22 11:46:03,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:46:03,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:46:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:46:04,148 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-22 11:46:04,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:46:04,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245044019] [2024-11-22 11:46:04,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245044019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:46:04,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:46:04,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:46:04,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758553365] [2024-11-22 11:46:04,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:46:04,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:46:04,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:46:04,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:46:04,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:46:04,152 INFO L87 Difference]: Start difference. First operand 346 states and 554 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 11:46:04,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:46:04,269 INFO L93 Difference]: Finished difference Result 1032 states and 1656 transitions. [2024-11-22 11:46:04,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:46:04,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 390 [2024-11-22 11:46:04,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:46:04,278 INFO L225 Difference]: With dead ends: 1032 [2024-11-22 11:46:04,279 INFO L226 Difference]: Without dead ends: 689 [2024-11-22 11:46:04,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:46:04,281 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 180 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:46:04,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 580 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:46:04,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-11-22 11:46:04,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 685. [2024-11-22 11:46:04,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 532 states have (on average 1.494360902255639) internal successors, (795), 534 states have internal predecessors, (795), 148 states have call successors, (148), 4 states have call predecessors, (148), 4 states have return successors, (148), 146 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-22 11:46:04,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1091 transitions. [2024-11-22 11:46:04,349 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1091 transitions. Word has length 390 [2024-11-22 11:46:04,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:46:04,351 INFO L471 AbstractCegarLoop]: Abstraction has 685 states and 1091 transitions. [2024-11-22 11:46:04,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 11:46:04,352 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1091 transitions. [2024-11-22 11:46:04,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-11-22 11:46:04,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:46:04,356 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:46:04,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 11:46:04,356 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:46:04,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:46:04,358 INFO L85 PathProgramCache]: Analyzing trace with hash -973906455, now seen corresponding path program 1 times [2024-11-22 11:46:04,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:46:04,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613924781] [2024-11-22 11:46:04,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:46:04,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:46:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:46:16,012 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-22 11:46:16,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:46:16,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613924781] [2024-11-22 11:46:16,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613924781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:46:16,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:46:16,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 11:46:16,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848338340] [2024-11-22 11:46:16,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:46:16,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 11:46:16,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:46:16,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 11:46:16,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-22 11:46:16,017 INFO L87 Difference]: Start difference. First operand 685 states and 1091 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 11:46:20,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:46:20,928 INFO L93 Difference]: Finished difference Result 1650 states and 2609 transitions. [2024-11-22 11:46:20,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 11:46:20,932 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 391 [2024-11-22 11:46:20,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:46:20,937 INFO L225 Difference]: With dead ends: 1650 [2024-11-22 11:46:20,937 INFO L226 Difference]: Without dead ends: 968 [2024-11-22 11:46:20,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-11-22 11:46:20,940 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 719 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:46:20,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1230 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-22 11:46:20,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2024-11-22 11:46:20,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 767. [2024-11-22 11:46:20,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 614 states have (on average 1.509771986970684) internal successors, (927), 616 states have internal predecessors, (927), 148 states have call successors, (148), 4 states have call predecessors, (148), 4 states have return successors, (148), 146 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-22 11:46:20,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1223 transitions. [2024-11-22 11:46:20,983 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1223 transitions. Word has length 391 [2024-11-22 11:46:20,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:46:20,984 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 1223 transitions. [2024-11-22 11:46:20,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 11:46:20,984 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1223 transitions. [2024-11-22 11:46:20,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-11-22 11:46:20,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:46:20,986 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:46:20,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 11:46:20,986 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:46:20,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:46:20,988 INFO L85 PathProgramCache]: Analyzing trace with hash -272306581, now seen corresponding path program 1 times [2024-11-22 11:46:20,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:46:20,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070269238] [2024-11-22 11:46:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:46:20,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:46:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:46:21,416 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-22 11:46:21,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:46:21,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070269238] [2024-11-22 11:46:21,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070269238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:46:21,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:46:21,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 11:46:21,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12527002] [2024-11-22 11:46:21,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:46:21,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 11:46:21,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:46:21,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 11:46:21,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:46:21,419 INFO L87 Difference]: Start difference. First operand 767 states and 1223 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 11:46:21,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:46:21,680 INFO L93 Difference]: Finished difference Result 1531 states and 2443 transitions. [2024-11-22 11:46:21,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:46:21,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 391 [2024-11-22 11:46:21,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:46:21,686 INFO L225 Difference]: With dead ends: 1531 [2024-11-22 11:46:21,686 INFO L226 Difference]: Without dead ends: 767 [2024-11-22 11:46:21,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 11:46:21,690 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 331 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:46:21,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 487 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:46:21,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2024-11-22 11:46:21,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 767. [2024-11-22 11:46:21,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 614 states have (on average 1.496742671009772) internal successors, (919), 616 states have internal predecessors, (919), 148 states have call successors, (148), 4 states have call predecessors, (148), 4 states have return successors, (148), 146 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-22 11:46:21,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1215 transitions. [2024-11-22 11:46:21,736 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1215 transitions. Word has length 391 [2024-11-22 11:46:21,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:46:21,737 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 1215 transitions. [2024-11-22 11:46:21,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 11:46:21,737 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1215 transitions. [2024-11-22 11:46:21,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-22 11:46:21,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:46:21,740 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:46:21,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 11:46:21,740 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:46:21,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:46:21,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1224137846, now seen corresponding path program 1 times [2024-11-22 11:46:21,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:46:21,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238865339] [2024-11-22 11:46:21,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:46:21,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:46:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:46:22,192 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-22 11:46:22,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:46:22,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238865339] [2024-11-22 11:46:22,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238865339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:46:22,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:46:22,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:46:22,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054197283] [2024-11-22 11:46:22,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:46:22,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:46:22,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:46:22,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:46:22,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:46:22,196 INFO L87 Difference]: Start difference. First operand 767 states and 1215 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 11:46:22,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:46:22,456 INFO L93 Difference]: Finished difference Result 1650 states and 2615 transitions. [2024-11-22 11:46:22,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:46:22,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 392 [2024-11-22 11:46:22,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:46:22,462 INFO L225 Difference]: With dead ends: 1650 [2024-11-22 11:46:22,462 INFO L226 Difference]: Without dead ends: 886 [2024-11-22 11:46:22,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:46:22,465 INFO L432 NwaCegarLoop]: 312 mSDtfsCounter, 199 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:46:22,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 916 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:46:22,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-11-22 11:46:22,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 884. [2024-11-22 11:46:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 667 states have (on average 1.4692653673163418) internal successors, (980), 669 states have internal predecessors, (980), 210 states have call successors, (210), 6 states have call predecessors, (210), 6 states have return successors, (210), 208 states have call predecessors, (210), 210 states have call successors, (210) [2024-11-22 11:46:22,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1400 transitions. [2024-11-22 11:46:22,530 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1400 transitions. Word has length 392 [2024-11-22 11:46:22,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:46:22,531 INFO L471 AbstractCegarLoop]: Abstraction has 884 states and 1400 transitions. [2024-11-22 11:46:22,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 11:46:22,531 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1400 transitions. [2024-11-22 11:46:22,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-22 11:46:22,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:46:22,533 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:46:22,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 11:46:22,534 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:46:22,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:46:22,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1351577181, now seen corresponding path program 1 times [2024-11-22 11:46:22,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:46:22,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644641465] [2024-11-22 11:46:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:46:22,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:46:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:46:35,570 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-22 11:46:35,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:46:35,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644641465] [2024-11-22 11:46:35,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644641465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:46:35,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:46:35,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 11:46:35,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490683117] [2024-11-22 11:46:35,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:46:35,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 11:46:35,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:46:35,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 11:46:35,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-22 11:46:35,572 INFO L87 Difference]: Start difference. First operand 884 states and 1400 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 11:46:41,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:46:41,177 INFO L93 Difference]: Finished difference Result 2736 states and 4294 transitions. [2024-11-22 11:46:41,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 11:46:41,182 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 392 [2024-11-22 11:46:41,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:46:41,189 INFO L225 Difference]: With dead ends: 2736 [2024-11-22 11:46:41,189 INFO L226 Difference]: Without dead ends: 1972 [2024-11-22 11:46:41,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2024-11-22 11:46:41,191 INFO L432 NwaCegarLoop]: 280 mSDtfsCounter, 905 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-22 11:46:41,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1445 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-22 11:46:41,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2024-11-22 11:46:41,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 988. [2024-11-22 11:46:41,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 771 states have (on average 1.4915693904020753) internal successors, (1150), 773 states have internal predecessors, (1150), 210 states have call successors, (210), 6 states have call predecessors, (210), 6 states have return successors, (210), 208 states have call predecessors, (210), 210 states have call successors, (210) [2024-11-22 11:46:41,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1570 transitions. [2024-11-22 11:46:41,248 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1570 transitions. Word has length 392 [2024-11-22 11:46:41,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:46:41,248 INFO L471 AbstractCegarLoop]: Abstraction has 988 states and 1570 transitions. [2024-11-22 11:46:41,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 11:46:41,249 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1570 transitions. [2024-11-22 11:46:41,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-22 11:46:41,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:46:41,250 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:46:41,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 11:46:41,251 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:46:41,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:46:41,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1279190623, now seen corresponding path program 1 times [2024-11-22 11:46:41,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:46:41,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406584082] [2024-11-22 11:46:41,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:46:41,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:46:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:46:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-22 11:46:50,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:46:50,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406584082] [2024-11-22 11:46:50,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406584082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:46:50,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:46:50,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 11:46:50,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112446066] [2024-11-22 11:46:50,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:46:50,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 11:46:50,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:46:50,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 11:46:50,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-22 11:46:50,551 INFO L87 Difference]: Start difference. First operand 988 states and 1570 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 11:46:53,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:46:53,508 INFO L93 Difference]: Finished difference Result 2276 states and 3607 transitions. [2024-11-22 11:46:53,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 11:46:53,509 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 392 [2024-11-22 11:46:53,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:46:53,515 INFO L225 Difference]: With dead ends: 2276 [2024-11-22 11:46:53,515 INFO L226 Difference]: Without dead ends: 1420 [2024-11-22 11:46:53,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-22 11:46:53,519 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 349 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-22 11:46:53,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 1289 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-22 11:46:53,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2024-11-22 11:46:53,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 988. [2024-11-22 11:46:53,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 771 states have (on average 1.4915693904020753) internal successors, (1150), 773 states have internal predecessors, (1150), 210 states have call successors, (210), 6 states have call predecessors, (210), 6 states have return successors, (210), 208 states have call predecessors, (210), 210 states have call successors, (210) [2024-11-22 11:46:53,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1570 transitions. [2024-11-22 11:46:53,571 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1570 transitions. Word has length 392 [2024-11-22 11:46:53,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:46:53,572 INFO L471 AbstractCegarLoop]: Abstraction has 988 states and 1570 transitions. [2024-11-22 11:46:53,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 11:46:53,572 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1570 transitions. [2024-11-22 11:46:53,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-22 11:46:53,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:46:53,575 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:46:53,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 11:46:53,575 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:46:53,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:46:53,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2049903777, now seen corresponding path program 1 times [2024-11-22 11:46:53,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:46:53,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260094391] [2024-11-22 11:46:53,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:46:53,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:46:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-22 11:47:04,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:04,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260094391] [2024-11-22 11:47:04,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260094391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:47:04,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:47:04,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 11:47:04,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128182199] [2024-11-22 11:47:04,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:47:04,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 11:47:04,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:04,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 11:47:04,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-22 11:47:04,185 INFO L87 Difference]: Start difference. First operand 988 states and 1570 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 11:47:11,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:11,174 INFO L93 Difference]: Finished difference Result 3688 states and 5785 transitions. [2024-11-22 11:47:11,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 11:47:11,175 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 392 [2024-11-22 11:47:11,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:11,186 INFO L225 Difference]: With dead ends: 3688 [2024-11-22 11:47:11,186 INFO L226 Difference]: Without dead ends: 2832 [2024-11-22 11:47:11,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2024-11-22 11:47:11,189 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 1858 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:11,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1858 Valid, 1204 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-22 11:47:11,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2024-11-22 11:47:11,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 1106. [2024-11-22 11:47:11,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 889 states have (on average 1.5073115860517434) internal successors, (1340), 891 states have internal predecessors, (1340), 210 states have call successors, (210), 6 states have call predecessors, (210), 6 states have return successors, (210), 208 states have call predecessors, (210), 210 states have call successors, (210) [2024-11-22 11:47:11,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1760 transitions. [2024-11-22 11:47:11,255 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1760 transitions. Word has length 392 [2024-11-22 11:47:11,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:11,256 INFO L471 AbstractCegarLoop]: Abstraction has 1106 states and 1760 transitions. [2024-11-22 11:47:11,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 11:47:11,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1760 transitions. [2024-11-22 11:47:11,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-22 11:47:11,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:11,259 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:11,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 11:47:11,259 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:11,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:11,259 INFO L85 PathProgramCache]: Analyzing trace with hash -2122290335, now seen corresponding path program 1 times [2024-11-22 11:47:11,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:11,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091798758] [2024-11-22 11:47:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:11,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:20,598 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-22 11:47:20,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:47:20,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091798758] [2024-11-22 11:47:20,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091798758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:47:20,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:47:20,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 11:47:20,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91565423] [2024-11-22 11:47:20,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:47:20,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 11:47:20,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:47:20,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 11:47:20,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-22 11:47:20,600 INFO L87 Difference]: Start difference. First operand 1106 states and 1760 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 11:47:23,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:47:23,800 INFO L93 Difference]: Finished difference Result 2864 states and 4529 transitions. [2024-11-22 11:47:23,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 11:47:23,801 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 392 [2024-11-22 11:47:23,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:47:23,814 INFO L225 Difference]: With dead ends: 2864 [2024-11-22 11:47:23,815 INFO L226 Difference]: Without dead ends: 1890 [2024-11-22 11:47:23,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-22 11:47:23,817 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 461 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-22 11:47:23,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1301 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-22 11:47:23,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2024-11-22 11:47:23,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1094. [2024-11-22 11:47:23,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 877 states have (on average 1.500570125427594) internal successors, (1316), 879 states have internal predecessors, (1316), 210 states have call successors, (210), 6 states have call predecessors, (210), 6 states have return successors, (210), 208 states have call predecessors, (210), 210 states have call successors, (210) [2024-11-22 11:47:23,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1736 transitions. [2024-11-22 11:47:23,875 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1736 transitions. Word has length 392 [2024-11-22 11:47:23,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:47:23,875 INFO L471 AbstractCegarLoop]: Abstraction has 1094 states and 1736 transitions. [2024-11-22 11:47:23,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-22 11:47:23,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1736 transitions. [2024-11-22 11:47:23,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2024-11-22 11:47:23,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:47:23,877 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:47:23,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 11:47:23,878 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:47:23,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:47:23,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1369851376, now seen corresponding path program 1 times [2024-11-22 11:47:23,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:47:23,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860223455] [2024-11-22 11:47:23,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:23,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:47:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 11:47:24,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040253591] [2024-11-22 11:47:24,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:47:24,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:47:24,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:47:24,182 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 11:47:24,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 11:47:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:47:24,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 11:47:24,398 INFO L278 TraceCheckSpWp]: Computing forward predicates...