./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-53.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-53.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 e5900adef742c9bfa7a4740bfd6257cd40ef26644b367767fd6845fd72b79bbd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 22:23:40,482 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 22:23:40,556 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 22:23:40,562 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 22:23:40,562 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 22:23:40,587 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 22:23:40,588 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 22:23:40,588 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 22:23:40,589 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 22:23:40,590 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 22:23:40,591 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 22:23:40,591 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 22:23:40,593 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 22:23:40,594 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 22:23:40,595 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 22:23:40,596 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 22:23:40,596 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 22:23:40,597 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 22:23:40,597 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 22:23:40,597 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 22:23:40,601 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 22:23:40,602 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 22:23:40,602 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 22:23:40,602 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 22:23:40,602 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 22:23:40,603 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 22:23:40,603 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 22:23:40,603 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 22:23:40,603 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 22:23:40,604 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 22:23:40,604 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 22:23:40,604 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 22:23:40,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:23:40,604 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 22:23:40,605 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 22:23:40,605 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 22:23:40,606 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 22:23:40,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 22:23:40,606 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 22:23:40,606 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 22:23:40,607 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 22:23:40,607 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 22:23:40,607 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5900adef742c9bfa7a4740bfd6257cd40ef26644b367767fd6845fd72b79bbd [2024-11-18 22:23:40,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 22:23:40,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 22:23:40,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 22:23:40,929 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 22:23:40,930 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 22:23:40,932 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-53.i [2024-11-18 22:23:42,395 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 22:23:42,622 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 22:23:42,622 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-53.i [2024-11-18 22:23:42,638 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f13be2f3/9cf677a17f6747539e7550c6b402a076/FLAG761744ab9 [2024-11-18 22:23:42,971 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f13be2f3/9cf677a17f6747539e7550c6b402a076 [2024-11-18 22:23:42,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 22:23:42,974 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 22:23:42,975 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 22:23:42,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 22:23:42,982 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 22:23:42,982 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:23:42" (1/1) ... [2024-11-18 22:23:42,983 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55221c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:42, skipping insertion in model container [2024-11-18 22:23:42,983 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:23:42" (1/1) ... [2024-11-18 22:23:43,023 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 22:23:43,201 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_loopvsstraightlinecode_100-1loop_file-53.i[916,929] [2024-11-18 22:23:43,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:23:43,315 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 22:23:43,326 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_loopvsstraightlinecode_100-1loop_file-53.i[916,929] [2024-11-18 22:23:43,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:23:43,390 INFO L204 MainTranslator]: Completed translation [2024-11-18 22:23:43,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:43 WrapperNode [2024-11-18 22:23:43,391 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 22:23:43,392 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 22:23:43,392 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 22:23:43,392 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 22:23:43,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:43" (1/1) ... [2024-11-18 22:23:43,421 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:43" (1/1) ... [2024-11-18 22:23:43,488 INFO L138 Inliner]: procedures = 26, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 225 [2024-11-18 22:23:43,489 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 22:23:43,490 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 22:23:43,490 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 22:23:43,490 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 22:23:43,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:43" (1/1) ... [2024-11-18 22:23:43,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:43" (1/1) ... [2024-11-18 22:23:43,511 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:43" (1/1) ... [2024-11-18 22:23:43,548 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 22:23:43,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:43" (1/1) ... [2024-11-18 22:23:43,549 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:43" (1/1) ... [2024-11-18 22:23:43,571 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:43" (1/1) ... [2024-11-18 22:23:43,575 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:43" (1/1) ... [2024-11-18 22:23:43,581 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:43" (1/1) ... [2024-11-18 22:23:43,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:43" (1/1) ... [2024-11-18 22:23:43,593 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 22:23:43,594 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 22:23:43,594 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 22:23:43,594 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 22:23:43,595 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:43" (1/1) ... [2024-11-18 22:23:43,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:23:43,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:23:43,627 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 22:23:43,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 22:23:43,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 22:23:43,675 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 22:23:43,676 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 22:23:43,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 22:23:43,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 22:23:43,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 22:23:43,785 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 22:23:43,787 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 22:23:44,438 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-11-18 22:23:44,439 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 22:23:44,457 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 22:23:44,457 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 22:23:44,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:23:44 BoogieIcfgContainer [2024-11-18 22:23:44,458 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 22:23:44,461 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 22:23:44,461 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 22:23:44,466 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 22:23:44,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:23:42" (1/3) ... [2024-11-18 22:23:44,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd15a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:23:44, skipping insertion in model container [2024-11-18 22:23:44,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:43" (2/3) ... [2024-11-18 22:23:44,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd15a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:23:44, skipping insertion in model container [2024-11-18 22:23:44,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:23:44" (3/3) ... [2024-11-18 22:23:44,470 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-53.i [2024-11-18 22:23:44,486 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 22:23:44,487 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 22:23:44,554 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 22:23:44,561 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;@6d5c4e3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 22:23:44,562 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 22:23:44,567 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 69 states have (on average 1.4492753623188406) internal successors, (100), 70 states have internal predecessors, (100), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-18 22:23:44,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-18 22:23:44,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:23:44,582 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:23:44,582 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:23:44,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:23:44,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1399656776, now seen corresponding path program 1 times [2024-11-18 22:23:44,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:23:44,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275166286] [2024-11-18 22:23:44,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:23:44,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:23:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:23:44,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2024-11-18 22:23:44,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:23:44,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275166286] [2024-11-18 22:23:44,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275166286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:23:44,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009529950] [2024-11-18 22:23:44,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:23:44,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:23:44,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:23:44,988 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:23:44,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 22:23:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:23:45,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 22:23:45,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:23:45,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2024-11-18 22:23:45,345 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 22:23:45,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009529950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:23:45,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:23:45,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 22:23:45,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440601337] [2024-11-18 22:23:45,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:23:45,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 22:23:45,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:23:45,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 22:23:45,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:23:45,377 INFO L87 Difference]: Start difference. First operand has 97 states, 69 states have (on average 1.4492753623188406) internal successors, (100), 70 states have internal predecessors, (100), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-18 22:23:45,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:23:45,403 INFO L93 Difference]: Finished difference Result 191 states and 322 transitions. [2024-11-18 22:23:45,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 22:23:45,406 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 2 states have call successors, (25) Word has length 170 [2024-11-18 22:23:45,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:23:45,412 INFO L225 Difference]: With dead ends: 191 [2024-11-18 22:23:45,412 INFO L226 Difference]: Without dead ends: 93 [2024-11-18 22:23:45,415 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:23:45,418 INFO L432 NwaCegarLoop]: 147 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, 147 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:23:45,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:23:45,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-18 22:23:45,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-18 22:23:45,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 66 states have (on average 1.4090909090909092) internal successors, (93), 66 states have internal predecessors, (93), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-18 22:23:45,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 143 transitions. [2024-11-18 22:23:45,456 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 143 transitions. Word has length 170 [2024-11-18 22:23:45,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:23:45,456 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 143 transitions. [2024-11-18 22:23:45,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-18 22:23:45,457 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 143 transitions. [2024-11-18 22:23:45,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-18 22:23:45,460 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:23:45,460 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:23:45,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 22:23:45,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 22:23:45,665 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:23:45,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:23:45,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1897820338, now seen corresponding path program 1 times [2024-11-18 22:23:45,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:23:45,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381842656] [2024-11-18 22:23:45,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:23:45,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:23:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:23:46,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-18 22:23:46,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:23:46,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381842656] [2024-11-18 22:23:46,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381842656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:23:46,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:23:46,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:23:46,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436186371] [2024-11-18 22:23:46,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:23:46,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:23:46,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:23:46,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:23:46,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:23:46,505 INFO L87 Difference]: Start difference. First operand 93 states and 143 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 22:23:46,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:23:46,605 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2024-11-18 22:23:46,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 22:23:46,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 170 [2024-11-18 22:23:46,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:23:46,614 INFO L225 Difference]: With dead ends: 233 [2024-11-18 22:23:46,614 INFO L226 Difference]: Without dead ends: 143 [2024-11-18 22:23:46,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:23:46,616 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 65 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:23:46,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 405 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:23:46,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-18 22:23:46,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2024-11-18 22:23:46,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 105 states have (on average 1.4285714285714286) internal successors, (150), 106 states have internal predecessors, (150), 31 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-18 22:23:46,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 212 transitions. [2024-11-18 22:23:46,649 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 212 transitions. Word has length 170 [2024-11-18 22:23:46,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:23:46,650 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 212 transitions. [2024-11-18 22:23:46,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 22:23:46,651 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 212 transitions. [2024-11-18 22:23:46,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-18 22:23:46,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:23:46,656 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:23:46,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 22:23:46,657 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:23:46,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:23:46,657 INFO L85 PathProgramCache]: Analyzing trace with hash -622139596, now seen corresponding path program 1 times [2024-11-18 22:23:46,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:23:46,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30508344] [2024-11-18 22:23:46,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:23:46,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:23:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:23:53,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-18 22:23:53,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:23:53,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30508344] [2024-11-18 22:23:53,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30508344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:23:53,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:23:53,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 22:23:53,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116206033] [2024-11-18 22:23:53,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:23:53,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 22:23:53,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:23:53,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 22:23:53,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-18 22:23:53,749 INFO L87 Difference]: Start difference. First operand 139 states and 212 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 22:23:56,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:23:56,764 INFO L93 Difference]: Finished difference Result 602 states and 917 transitions. [2024-11-18 22:23:56,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 22:23:56,765 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 170 [2024-11-18 22:23:56,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:23:56,771 INFO L225 Difference]: With dead ends: 602 [2024-11-18 22:23:56,771 INFO L226 Difference]: Without dead ends: 466 [2024-11-18 22:23:56,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-11-18 22:23:56,777 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 503 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:23:56,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 697 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-18 22:23:56,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-11-18 22:23:56,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 242. [2024-11-18 22:23:56,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 181 states have (on average 1.4364640883977902) internal successors, (260), 182 states have internal predecessors, (260), 56 states have call successors, (56), 4 states have call predecessors, (56), 4 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-18 22:23:56,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 372 transitions. [2024-11-18 22:23:56,825 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 372 transitions. Word has length 170 [2024-11-18 22:23:56,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:23:56,825 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 372 transitions. [2024-11-18 22:23:56,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 22:23:56,827 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 372 transitions. [2024-11-18 22:23:56,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-18 22:23:56,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:23:56,834 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:23:56,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 22:23:56,835 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:23:56,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:23:56,836 INFO L85 PathProgramCache]: Analyzing trace with hash 2070601, now seen corresponding path program 1 times [2024-11-18 22:23:56,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:23:56,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823563629] [2024-11-18 22:23:56,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:23:56,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:23:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:23:57,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-18 22:23:57,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:23:57,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823563629] [2024-11-18 22:23:57,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823563629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:23:57,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:23:57,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:23:57,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200624554] [2024-11-18 22:23:57,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:23:57,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:23:57,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:23:57,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:23:57,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:23:57,015 INFO L87 Difference]: Start difference. First operand 242 states and 372 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 22:23:57,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:23:57,142 INFO L93 Difference]: Finished difference Result 574 states and 881 transitions. [2024-11-18 22:23:57,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 22:23:57,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 171 [2024-11-18 22:23:57,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:23:57,149 INFO L225 Difference]: With dead ends: 574 [2024-11-18 22:23:57,149 INFO L226 Difference]: Without dead ends: 438 [2024-11-18 22:23:57,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:23:57,152 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 140 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:23:57,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 420 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:23:57,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2024-11-18 22:23:57,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 357. [2024-11-18 22:23:57,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 285 states have (on average 1.4421052631578948) internal successors, (411), 288 states have internal predecessors, (411), 64 states have call successors, (64), 7 states have call predecessors, (64), 7 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-18 22:23:57,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 539 transitions. [2024-11-18 22:23:57,185 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 539 transitions. Word has length 171 [2024-11-18 22:23:57,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:23:57,185 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 539 transitions. [2024-11-18 22:23:57,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 22:23:57,186 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 539 transitions. [2024-11-18 22:23:57,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-18 22:23:57,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:23:57,188 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:23:57,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 22:23:57,189 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:23:57,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:23:57,190 INFO L85 PathProgramCache]: Analyzing trace with hash 136084107, now seen corresponding path program 1 times [2024-11-18 22:23:57,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:23:57,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602196218] [2024-11-18 22:23:57,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:23:57,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:23:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:23:57,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-18 22:23:57,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:23:57,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602196218] [2024-11-18 22:23:57,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602196218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:23:57,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:23:57,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 22:23:57,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100858397] [2024-11-18 22:23:57,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:23:57,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 22:23:57,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:23:57,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 22:23:57,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 22:23:57,913 INFO L87 Difference]: Start difference. First operand 357 states and 539 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 22:23:58,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:23:58,458 INFO L93 Difference]: Finished difference Result 1052 states and 1576 transitions. [2024-11-18 22:23:58,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 22:23:58,459 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 171 [2024-11-18 22:23:58,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:23:58,466 INFO L225 Difference]: With dead ends: 1052 [2024-11-18 22:23:58,466 INFO L226 Difference]: Without dead ends: 837 [2024-11-18 22:23:58,467 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-18 22:23:58,471 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 320 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 22:23:58,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 1171 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 22:23:58,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2024-11-18 22:23:58,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 405. [2024-11-18 22:23:58,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 333 states have (on average 1.4654654654654655) internal successors, (488), 336 states have internal predecessors, (488), 64 states have call successors, (64), 7 states have call predecessors, (64), 7 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-18 22:23:58,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 616 transitions. [2024-11-18 22:23:58,517 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 616 transitions. Word has length 171 [2024-11-18 22:23:58,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:23:58,517 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 616 transitions. [2024-11-18 22:23:58,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 22:23:58,518 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 616 transitions. [2024-11-18 22:23:58,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-18 22:23:58,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:23:58,520 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:23:58,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 22:23:58,521 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:23:58,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:23:58,521 INFO L85 PathProgramCache]: Analyzing trace with hash -122081331, now seen corresponding path program 1 times [2024-11-18 22:23:58,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:23:58,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882938059] [2024-11-18 22:23:58,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:23:58,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:23:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:24:00,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-18 22:24:00,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:24:00,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882938059] [2024-11-18 22:24:00,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882938059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:24:00,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:24:00,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 22:24:00,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048025668] [2024-11-18 22:24:00,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:24:00,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 22:24:00,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:24:00,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 22:24:00,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 22:24:00,693 INFO L87 Difference]: Start difference. First operand 405 states and 616 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 22:24:02,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:24:02,236 INFO L93 Difference]: Finished difference Result 1006 states and 1518 transitions. [2024-11-18 22:24:02,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 22:24:02,237 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 171 [2024-11-18 22:24:02,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:24:02,243 INFO L225 Difference]: With dead ends: 1006 [2024-11-18 22:24:02,244 INFO L226 Difference]: Without dead ends: 791 [2024-11-18 22:24:02,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:24:02,245 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 252 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 22:24:02,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 671 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 22:24:02,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2024-11-18 22:24:02,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 445. [2024-11-18 22:24:02,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 373 states have (on average 1.482573726541555) internal successors, (553), 376 states have internal predecessors, (553), 64 states have call successors, (64), 7 states have call predecessors, (64), 7 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-18 22:24:02,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 681 transitions. [2024-11-18 22:24:02,278 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 681 transitions. Word has length 171 [2024-11-18 22:24:02,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:24:02,278 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 681 transitions. [2024-11-18 22:24:02,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 22:24:02,279 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 681 transitions. [2024-11-18 22:24:02,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-18 22:24:02,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:24:02,281 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:24:02,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 22:24:02,282 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:24:02,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:24:02,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1004917690, now seen corresponding path program 1 times [2024-11-18 22:24:02,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:24:02,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164809651] [2024-11-18 22:24:02,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:24:02,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:24:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:24:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-18 22:24:17,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:24:17,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164809651] [2024-11-18 22:24:17,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164809651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:24:17,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:24:17,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-18 22:24:17,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870872467] [2024-11-18 22:24:17,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:24:17,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 22:24:17,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:24:17,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 22:24:17,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2024-11-18 22:24:17,404 INFO L87 Difference]: Start difference. First operand 445 states and 681 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-18 22:24:21,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:24:21,325 INFO L93 Difference]: Finished difference Result 1308 states and 1996 transitions. [2024-11-18 22:24:21,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 22:24:21,326 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 171 [2024-11-18 22:24:21,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:24:21,331 INFO L225 Difference]: With dead ends: 1308 [2024-11-18 22:24:21,331 INFO L226 Difference]: Without dead ends: 1033 [2024-11-18 22:24:21,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-11-18 22:24:21,333 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 546 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-18 22:24:21,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1031 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-18 22:24:21,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2024-11-18 22:24:21,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 459. [2024-11-18 22:24:21,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 387 states have (on average 1.483204134366925) internal successors, (574), 390 states have internal predecessors, (574), 64 states have call successors, (64), 7 states have call predecessors, (64), 7 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-18 22:24:21,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 702 transitions. [2024-11-18 22:24:21,366 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 702 transitions. Word has length 171 [2024-11-18 22:24:21,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:24:21,367 INFO L471 AbstractCegarLoop]: Abstraction has 459 states and 702 transitions. [2024-11-18 22:24:21,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-18 22:24:21,367 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 702 transitions. [2024-11-18 22:24:21,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-18 22:24:21,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:24:21,370 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:24:21,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 22:24:21,370 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:24:21,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:24:21,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1995543665, now seen corresponding path program 1 times [2024-11-18 22:24:21,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:24:21,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053875004] [2024-11-18 22:24:21,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:24:21,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:24:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:24:22,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2024-11-18 22:24:22,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:24:22,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053875004] [2024-11-18 22:24:22,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053875004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:24:22,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570405539] [2024-11-18 22:24:22,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:24:22,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:24:22,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:24:22,485 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:24:22,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 22:24:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:24:22,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 22:24:22,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:24:22,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 620 proven. 78 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2024-11-18 22:24:22,960 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:24:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 30 proven. 42 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2024-11-18 22:24:23,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570405539] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 22:24:23,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 22:24:23,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 6] total 21 [2024-11-18 22:24:23,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070758647] [2024-11-18 22:24:23,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 22:24:23,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 22:24:23,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:24:23,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 22:24:23,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2024-11-18 22:24:23,288 INFO L87 Difference]: Start difference. First operand 459 states and 702 transitions. Second operand has 21 states, 21 states have (on average 6.0476190476190474) internal successors, (127), 21 states have internal predecessors, (127), 5 states have call successors, (64), 3 states have call predecessors, (64), 5 states have return successors, (65), 5 states have call predecessors, (65), 5 states have call successors, (65) [2024-11-18 22:24:26,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:24:26,532 INFO L93 Difference]: Finished difference Result 2314 states and 3382 transitions. [2024-11-18 22:24:26,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-18 22:24:26,534 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.0476190476190474) internal successors, (127), 21 states have internal predecessors, (127), 5 states have call successors, (64), 3 states have call predecessors, (64), 5 states have return successors, (65), 5 states have call predecessors, (65), 5 states have call successors, (65) Word has length 172 [2024-11-18 22:24:26,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:24:26,550 INFO L225 Difference]: With dead ends: 2314 [2024-11-18 22:24:26,553 INFO L226 Difference]: Without dead ends: 1973 [2024-11-18 22:24:26,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 341 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1977 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=983, Invalid=5659, Unknown=0, NotChecked=0, Total=6642 [2024-11-18 22:24:26,560 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 2144 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 1788 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2156 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 2210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 1788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 22:24:26,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2156 Valid, 1470 Invalid, 2210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 1788 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 22:24:26,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2024-11-18 22:24:26,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 622. [2024-11-18 22:24:26,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 545 states have (on average 1.4385321100917432) internal successors, (784), 548 states have internal predecessors, (784), 64 states have call successors, (64), 12 states have call predecessors, (64), 12 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-18 22:24:26,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 912 transitions. [2024-11-18 22:24:26,622 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 912 transitions. Word has length 172 [2024-11-18 22:24:26,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:24:26,623 INFO L471 AbstractCegarLoop]: Abstraction has 622 states and 912 transitions. [2024-11-18 22:24:26,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.0476190476190474) internal successors, (127), 21 states have internal predecessors, (127), 5 states have call successors, (64), 3 states have call predecessors, (64), 5 states have return successors, (65), 5 states have call predecessors, (65), 5 states have call successors, (65) [2024-11-18 22:24:26,625 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 912 transitions. [2024-11-18 22:24:26,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-18 22:24:26,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:24:26,628 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:24:26,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 22:24:26,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-18 22:24:26,830 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:24:26,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:24:26,831 INFO L85 PathProgramCache]: Analyzing trace with hash -984426415, now seen corresponding path program 1 times [2024-11-18 22:24:26,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:24:26,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114177471] [2024-11-18 22:24:26,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:24:26,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:24:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:24:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2024-11-18 22:24:27,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:24:27,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114177471] [2024-11-18 22:24:27,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114177471] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:24:27,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120469252] [2024-11-18 22:24:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:24:27,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:24:27,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:24:27,525 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:24:27,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 22:24:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:24:27,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 22:24:27,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:24:28,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 204 proven. 66 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2024-11-18 22:24:28,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:24:28,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2024-11-18 22:24:28,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120469252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 22:24:28,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 22:24:28,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 22 [2024-11-18 22:24:28,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197280500] [2024-11-18 22:24:28,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 22:24:28,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 22:24:28,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:24:28,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 22:24:28,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-11-18 22:24:28,635 INFO L87 Difference]: Start difference. First operand 622 states and 912 transitions. Second operand has 22 states, 22 states have (on average 5.454545454545454) internal successors, (120), 22 states have internal predecessors, (120), 6 states have call successors, (75), 3 states have call predecessors, (75), 6 states have return successors, (75), 6 states have call predecessors, (75), 6 states have call successors, (75) [2024-11-18 22:24:29,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:24:29,843 INFO L93 Difference]: Finished difference Result 1405 states and 2028 transitions. [2024-11-18 22:24:29,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-18 22:24:29,844 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.454545454545454) internal successors, (120), 22 states have internal predecessors, (120), 6 states have call successors, (75), 3 states have call predecessors, (75), 6 states have return successors, (75), 6 states have call predecessors, (75), 6 states have call successors, (75) Word has length 172 [2024-11-18 22:24:29,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:24:29,851 INFO L225 Difference]: With dead ends: 1405 [2024-11-18 22:24:29,851 INFO L226 Difference]: Without dead ends: 1014 [2024-11-18 22:24:29,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=479, Invalid=1873, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 22:24:29,855 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 1077 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 22:24:29,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 958 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 22:24:29,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2024-11-18 22:24:29,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 583. [2024-11-18 22:24:29,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 506 states have (on average 1.4209486166007905) internal successors, (719), 509 states have internal predecessors, (719), 64 states have call successors, (64), 12 states have call predecessors, (64), 12 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-18 22:24:29,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 847 transitions. [2024-11-18 22:24:29,897 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 847 transitions. Word has length 172 [2024-11-18 22:24:29,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:24:29,898 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 847 transitions. [2024-11-18 22:24:29,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.454545454545454) internal successors, (120), 22 states have internal predecessors, (120), 6 states have call successors, (75), 3 states have call predecessors, (75), 6 states have return successors, (75), 6 states have call predecessors, (75), 6 states have call successors, (75) [2024-11-18 22:24:29,898 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 847 transitions. [2024-11-18 22:24:29,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-18 22:24:29,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:24:29,901 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:24:29,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 22:24:30,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:24:30,103 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:24:30,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:24:30,104 INFO L85 PathProgramCache]: Analyzing trace with hash -247518493, now seen corresponding path program 1 times [2024-11-18 22:24:30,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:24:30,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352675103] [2024-11-18 22:24:30,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:24:30,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:24:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:24:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-18 22:24:30,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:24:30,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352675103] [2024-11-18 22:24:30,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352675103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:24:30,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:24:30,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:24:30,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382672993] [2024-11-18 22:24:30,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:24:30,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:24:30,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:24:30,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:24:30,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:24:30,284 INFO L87 Difference]: Start difference. First operand 583 states and 847 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 22:24:30,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:24:30,415 INFO L93 Difference]: Finished difference Result 998 states and 1452 transitions. [2024-11-18 22:24:30,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 22:24:30,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 172 [2024-11-18 22:24:30,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:24:30,419 INFO L225 Difference]: With dead ends: 998 [2024-11-18 22:24:30,420 INFO L226 Difference]: Without dead ends: 597 [2024-11-18 22:24:30,421 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 [2024-11-18 22:24:30,421 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 60 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:24:30,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 359 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:24:30,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2024-11-18 22:24:30,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 591. [2024-11-18 22:24:30,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 514 states have (on average 1.4143968871595332) internal successors, (727), 517 states have internal predecessors, (727), 64 states have call successors, (64), 12 states have call predecessors, (64), 12 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-18 22:24:30,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 855 transitions. [2024-11-18 22:24:30,460 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 855 transitions. Word has length 172 [2024-11-18 22:24:30,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:24:30,461 INFO L471 AbstractCegarLoop]: Abstraction has 591 states and 855 transitions. [2024-11-18 22:24:30,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 22:24:30,462 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 855 transitions. [2024-11-18 22:24:30,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-18 22:24:30,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:24:30,465 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:24:30,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 22:24:30,466 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:24:30,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:24:30,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1805037936, now seen corresponding path program 1 times [2024-11-18 22:24:30,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:24:30,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885746183] [2024-11-18 22:24:30,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:24:30,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:24:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:24:30,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-18 22:24:30,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:24:30,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885746183] [2024-11-18 22:24:30,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885746183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:24:30,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:24:30,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:24:30,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729103065] [2024-11-18 22:24:30,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:24:30,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:24:30,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:24:30,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:24:30,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:24:30,624 INFO L87 Difference]: Start difference. First operand 591 states and 855 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 22:24:30,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:24:30,783 INFO L93 Difference]: Finished difference Result 1319 states and 1910 transitions. [2024-11-18 22:24:30,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 22:24:30,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 173 [2024-11-18 22:24:30,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:24:30,788 INFO L225 Difference]: With dead ends: 1319 [2024-11-18 22:24:30,788 INFO L226 Difference]: Without dead ends: 914 [2024-11-18 22:24:30,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:24:30,790 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 134 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:24:30,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 372 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:24:30,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2024-11-18 22:24:30,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 909. [2024-11-18 22:24:30,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 787 states have (on average 1.3913595933926302) internal successors, (1095), 793 states have internal predecessors, (1095), 103 states have call successors, (103), 18 states have call predecessors, (103), 18 states have return successors, (103), 97 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-18 22:24:30,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1301 transitions. [2024-11-18 22:24:30,864 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1301 transitions. Word has length 173 [2024-11-18 22:24:30,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:24:30,864 INFO L471 AbstractCegarLoop]: Abstraction has 909 states and 1301 transitions. [2024-11-18 22:24:30,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 22:24:30,865 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1301 transitions. [2024-11-18 22:24:30,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-18 22:24:30,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:24:30,868 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:24:30,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 22:24:30,868 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:24:30,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:24:30,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1819079144, now seen corresponding path program 1 times [2024-11-18 22:24:30,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:24:30,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760791402] [2024-11-18 22:24:30,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:24:30,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:24:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 22:24:31,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545627129] [2024-11-18 22:24:31,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:24:31,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:24:31,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:24:31,023 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:24:31,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 22:24:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:24:31,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-18 22:24:31,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:24:33,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 604 proven. 210 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2024-11-18 22:24:33,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:24:36,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 96 proven. 174 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2024-11-18 22:24:36,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:24:36,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760791402] [2024-11-18 22:24:36,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 22:24:36,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545627129] [2024-11-18 22:24:36,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545627129] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 22:24:36,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 22:24:36,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21] total 44 [2024-11-18 22:24:36,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733226727] [2024-11-18 22:24:36,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 22:24:36,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-18 22:24:36,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:24:36,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-18 22:24:36,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=1478, Unknown=0, NotChecked=0, Total=1892 [2024-11-18 22:24:36,143 INFO L87 Difference]: Start difference. First operand 909 states and 1301 transitions. Second operand has 44 states, 42 states have (on average 3.0) internal successors, (126), 40 states have internal predecessors, (126), 12 states have call successors, (50), 7 states have call predecessors, (50), 13 states have return successors, (50), 10 states have call predecessors, (50), 12 states have call successors, (50)