./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-68.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_operatoramount_amount100_file-68.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 9cada0c85d469bf843d2b88bb91f13bf498b21137f0d387bee03f08915f85ad4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:31:12,397 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:31:12,497 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:31:12,503 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:31:12,506 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:31:12,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:31:12,534 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:31:12,534 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:31:12,535 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:31:12,536 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:31:12,537 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:31:12,537 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:31:12,538 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:31:12,538 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:31:12,540 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:31:12,540 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:31:12,540 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:31:12,541 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:31:12,541 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:31:12,541 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:31:12,541 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:31:12,542 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:31:12,542 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:31:12,543 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:31:12,543 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:31:12,543 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:31:12,543 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:31:12,544 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:31:12,544 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:31:12,544 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:31:12,545 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:31:12,545 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:31:12,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:31:12,546 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:31:12,546 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:31:12,546 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:31:12,546 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:31:12,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:31:12,547 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:31:12,547 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:31:12,547 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:31:12,549 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:31:12,549 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cada0c85d469bf843d2b88bb91f13bf498b21137f0d387bee03f08915f85ad4 [2024-11-18 23:31:12,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:31:12,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:31:12,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:31:12,836 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:31:12,836 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:31:12,837 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-68.i [2024-11-18 23:31:14,282 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:31:14,514 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:31:14,518 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-68.i [2024-11-18 23:31:14,529 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99010fa13/258e148b898c45999073203e8ad1dd47/FLAGb983d986a [2024-11-18 23:31:14,870 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99010fa13/258e148b898c45999073203e8ad1dd47 [2024-11-18 23:31:14,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:31:14,873 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:31:14,876 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:31:14,876 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:31:14,881 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:31:14,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:31:14" (1/1) ... [2024-11-18 23:31:14,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4454f2c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:31:14, skipping insertion in model container [2024-11-18 23:31:14,882 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:31:14" (1/1) ... [2024-11-18 23:31:14,915 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:31:15,103 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-68.i[916,929] [2024-11-18 23:31:15,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:31:15,216 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:31:15,228 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-68.i[916,929] [2024-11-18 23:31:15,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:31:15,293 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:31:15,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:31:15 WrapperNode [2024-11-18 23:31:15,294 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:31:15,295 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:31:15,295 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:31:15,295 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:31:15,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:31:15" (1/1) ... [2024-11-18 23:31:15,312 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:31:15" (1/1) ... [2024-11-18 23:31:15,357 INFO L138 Inliner]: procedures = 26, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 390 [2024-11-18 23:31:15,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:31:15,358 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:31:15,359 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:31:15,359 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:31:15,371 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:31:15" (1/1) ... [2024-11-18 23:31:15,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:31:15" (1/1) ... [2024-11-18 23:31:15,378 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:31:15" (1/1) ... [2024-11-18 23:31:15,418 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 23:31:15,422 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:31:15" (1/1) ... [2024-11-18 23:31:15,422 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:31:15" (1/1) ... [2024-11-18 23:31:15,448 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:31:15" (1/1) ... [2024-11-18 23:31:15,456 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:31:15" (1/1) ... [2024-11-18 23:31:15,464 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:31:15" (1/1) ... [2024-11-18 23:31:15,475 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:31:15" (1/1) ... [2024-11-18 23:31:15,485 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:31:15,487 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:31:15,487 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:31:15,487 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:31:15,488 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:31:15" (1/1) ... [2024-11-18 23:31:15,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:31:15,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:31:15,521 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 23:31:15,525 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 23:31:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:31:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:31:15,574 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:31:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:31:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:31:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:31:15,659 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:31:15,661 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:31:16,361 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2024-11-18 23:31:16,361 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:31:16,378 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:31:16,378 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:31:16,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:31:16 BoogieIcfgContainer [2024-11-18 23:31:16,379 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:31:16,382 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:31:16,382 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:31:16,386 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:31:16,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:31:14" (1/3) ... [2024-11-18 23:31:16,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f53fdce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:31:16, skipping insertion in model container [2024-11-18 23:31:16,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:31:15" (2/3) ... [2024-11-18 23:31:16,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f53fdce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:31:16, skipping insertion in model container [2024-11-18 23:31:16,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:31:16" (3/3) ... [2024-11-18 23:31:16,389 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-68.i [2024-11-18 23:31:16,403 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:31:16,403 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:31:16,461 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:31:16,467 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;@792adcee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:31:16,468 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:31:16,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 119 states have (on average 1.4621848739495797) internal successors, (174), 120 states have internal predecessors, (174), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-18 23:31:16,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-18 23:31:16,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:16,501 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:31:16,501 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:16,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:16,505 INFO L85 PathProgramCache]: Analyzing trace with hash 54061879, now seen corresponding path program 1 times [2024-11-18 23:31:16,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:16,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755669370] [2024-11-18 23:31:16,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:16,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2024-11-18 23:31:16,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:16,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755669370] [2024-11-18 23:31:16,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755669370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:31:16,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712866265] [2024-11-18 23:31:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:16,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:31:16,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:31:16,950 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 23:31:16,952 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 23:31:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:17,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:31:17,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:31:17,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2024-11-18 23:31:17,313 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:31:17,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712866265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:17,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:31:17,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:31:17,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757711876] [2024-11-18 23:31:17,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:17,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:31:17,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:17,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:31:17,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:31:17,354 INFO L87 Difference]: Start difference. First operand has 162 states, 119 states have (on average 1.4621848739495797) internal successors, (174), 120 states have internal predecessors, (174), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-18 23:31:17,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:17,399 INFO L93 Difference]: Finished difference Result 317 states and 542 transitions. [2024-11-18 23:31:17,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:31:17,402 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) Word has length 268 [2024-11-18 23:31:17,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:17,411 INFO L225 Difference]: With dead ends: 317 [2024-11-18 23:31:17,411 INFO L226 Difference]: Without dead ends: 158 [2024-11-18 23:31:17,415 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 269 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 23:31:17,418 INFO L432 NwaCegarLoop]: 247 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, 247 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 23:31:17,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:31:17,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-18 23:31:17,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2024-11-18 23:31:17,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 116 states have (on average 1.4396551724137931) internal successors, (167), 116 states have internal predecessors, (167), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-18 23:31:17,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 247 transitions. [2024-11-18 23:31:17,473 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 247 transitions. Word has length 268 [2024-11-18 23:31:17,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:17,474 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 247 transitions. [2024-11-18 23:31:17,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-18 23:31:17,475 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 247 transitions. [2024-11-18 23:31:17,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-18 23:31:17,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:17,480 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:31:17,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 23:31:17,684 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 23:31:17,685 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:17,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:17,686 INFO L85 PathProgramCache]: Analyzing trace with hash 467577979, now seen corresponding path program 1 times [2024-11-18 23:31:17,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:17,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362866881] [2024-11-18 23:31:17,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:17,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:18,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-18 23:31:18,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:18,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362866881] [2024-11-18 23:31:18,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362866881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:18,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:18,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:31:18,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890547914] [2024-11-18 23:31:18,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:18,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:31:18,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:18,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:31:18,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:31:18,182 INFO L87 Difference]: Start difference. First operand 158 states and 247 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 23:31:18,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:18,222 INFO L93 Difference]: Finished difference Result 313 states and 491 transitions. [2024-11-18 23:31:18,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:31:18,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 268 [2024-11-18 23:31:18,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:18,226 INFO L225 Difference]: With dead ends: 313 [2024-11-18 23:31:18,226 INFO L226 Difference]: Without dead ends: 158 [2024-11-18 23:31:18,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:31:18,231 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 0 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:18,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 487 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:31:18,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-18 23:31:18,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2024-11-18 23:31:18,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 116 states have (on average 1.4310344827586208) internal successors, (166), 116 states have internal predecessors, (166), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-18 23:31:18,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 246 transitions. [2024-11-18 23:31:18,254 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 246 transitions. Word has length 268 [2024-11-18 23:31:18,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:18,258 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 246 transitions. [2024-11-18 23:31:18,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 23:31:18,259 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 246 transitions. [2024-11-18 23:31:18,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-18 23:31:18,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:18,265 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:31:18,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:31:18,266 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:18,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:18,266 INFO L85 PathProgramCache]: Analyzing trace with hash -376427523, now seen corresponding path program 1 times [2024-11-18 23:31:18,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:18,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698050543] [2024-11-18 23:31:18,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:18,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:22,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-18 23:31:22,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:22,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698050543] [2024-11-18 23:31:22,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698050543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:22,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:22,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 23:31:22,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767727116] [2024-11-18 23:31:22,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:22,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 23:31:22,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:22,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 23:31:22,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 23:31:22,706 INFO L87 Difference]: Start difference. First operand 158 states and 246 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 23:31:23,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:23,980 INFO L93 Difference]: Finished difference Result 473 states and 729 transitions. [2024-11-18 23:31:23,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 23:31:23,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 268 [2024-11-18 23:31:23,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:23,986 INFO L225 Difference]: With dead ends: 473 [2024-11-18 23:31:23,988 INFO L226 Difference]: Without dead ends: 318 [2024-11-18 23:31:23,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:31:23,989 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 715 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:23,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 584 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 23:31:23,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-18 23:31:24,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 293. [2024-11-18 23:31:24,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 247 states have (on average 1.4817813765182186) internal successors, (366), 248 states have internal predecessors, (366), 43 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 23:31:24,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 452 transitions. [2024-11-18 23:31:24,030 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 452 transitions. Word has length 268 [2024-11-18 23:31:24,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:24,031 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 452 transitions. [2024-11-18 23:31:24,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 23:31:24,031 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 452 transitions. [2024-11-18 23:31:24,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-18 23:31:24,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:24,036 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:31:24,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:31:24,037 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:24,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:24,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1656291201, now seen corresponding path program 1 times [2024-11-18 23:31:24,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:24,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665423634] [2024-11-18 23:31:24,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:24,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:24,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-18 23:31:24,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:24,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665423634] [2024-11-18 23:31:24,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665423634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:31:24,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159763844] [2024-11-18 23:31:24,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:24,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:31:24,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:31:24,491 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 23:31:24,493 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 23:31:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:24,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 23:31:24,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:31:25,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1543 proven. 147 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2024-11-18 23:31:25,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:31:25,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 81 proven. 150 refuted. 0 times theorem prover too weak. 2889 trivial. 0 not checked. [2024-11-18 23:31:25,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159763844] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:31:25,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:31:25,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2024-11-18 23:31:25,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883127837] [2024-11-18 23:31:25,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:31:25,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 23:31:25,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:25,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 23:31:25,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-18 23:31:25,998 INFO L87 Difference]: Start difference. First operand 293 states and 452 transitions. Second operand has 15 states, 15 states have (on average 9.266666666666667) internal successors, (139), 15 states have internal predecessors, (139), 6 states have call successors, (102), 3 states have call predecessors, (102), 7 states have return successors, (104), 6 states have call predecessors, (104), 6 states have call successors, (104) [2024-11-18 23:31:26,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:26,723 INFO L93 Difference]: Finished difference Result 548 states and 838 transitions. [2024-11-18 23:31:26,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 23:31:26,724 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.266666666666667) internal successors, (139), 15 states have internal predecessors, (139), 6 states have call successors, (102), 3 states have call predecessors, (102), 7 states have return successors, (104), 6 states have call predecessors, (104), 6 states have call successors, (104) Word has length 268 [2024-11-18 23:31:26,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:26,729 INFO L225 Difference]: With dead ends: 548 [2024-11-18 23:31:26,730 INFO L226 Difference]: Without dead ends: 258 [2024-11-18 23:31:26,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=235, Invalid=521, Unknown=0, NotChecked=0, Total=756 [2024-11-18 23:31:26,733 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 263 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:26,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 588 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 23:31:26,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-18 23:31:26,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2024-11-18 23:31:26,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 207 states have (on average 1.3623188405797102) internal successors, (282), 208 states have internal predecessors, (282), 43 states have call successors, (43), 5 states have call predecessors, (43), 5 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 23:31:26,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 368 transitions. [2024-11-18 23:31:26,762 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 368 transitions. Word has length 268 [2024-11-18 23:31:26,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:26,766 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 368 transitions. [2024-11-18 23:31:26,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.266666666666667) internal successors, (139), 15 states have internal predecessors, (139), 6 states have call successors, (102), 3 states have call predecessors, (102), 7 states have return successors, (104), 6 states have call predecessors, (104), 6 states have call successors, (104) [2024-11-18 23:31:26,766 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 368 transitions. [2024-11-18 23:31:26,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-18 23:31:26,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:26,770 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:31:26,790 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 23:31:26,975 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,SelfDestructingSolverStorable3 [2024-11-18 23:31:26,976 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:26,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:26,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1151353825, now seen corresponding path program 1 times [2024-11-18 23:31:26,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:26,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742019218] [2024-11-18 23:31:26,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:26,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:31,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-18 23:31:31,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:31,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742019218] [2024-11-18 23:31:31,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742019218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:31,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:31,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 23:31:31,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981419201] [2024-11-18 23:31:31,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:31,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 23:31:31,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:31,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 23:31:31,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-18 23:31:31,158 INFO L87 Difference]: Start difference. First operand 256 states and 368 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-18 23:31:33,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:33,688 INFO L93 Difference]: Finished difference Result 1064 states and 1499 transitions. [2024-11-18 23:31:33,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 23:31:33,689 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 270 [2024-11-18 23:31:33,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:33,694 INFO L225 Difference]: With dead ends: 1064 [2024-11-18 23:31:33,694 INFO L226 Difference]: Without dead ends: 811 [2024-11-18 23:31:33,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=194, Invalid=358, Unknown=0, NotChecked=0, Total=552 [2024-11-18 23:31:33,696 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 1861 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1861 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 1834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:33,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1861 Valid, 1247 Invalid, 1834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1655 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-18 23:31:33,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2024-11-18 23:31:33,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 514. [2024-11-18 23:31:33,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 427 states have (on average 1.3840749414519906) internal successors, (591), 430 states have internal predecessors, (591), 76 states have call successors, (76), 10 states have call predecessors, (76), 10 states have return successors, (76), 73 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-18 23:31:33,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 743 transitions. [2024-11-18 23:31:33,733 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 743 transitions. Word has length 270 [2024-11-18 23:31:33,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:33,734 INFO L471 AbstractCegarLoop]: Abstraction has 514 states and 743 transitions. [2024-11-18 23:31:33,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-18 23:31:33,734 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 743 transitions. [2024-11-18 23:31:33,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-18 23:31:33,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:33,738 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:31:33,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:31:33,738 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:33,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:33,739 INFO L85 PathProgramCache]: Analyzing trace with hash -128509853, now seen corresponding path program 1 times [2024-11-18 23:31:33,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:33,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155218987] [2024-11-18 23:31:33,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:33,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-18 23:31:37,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:37,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155218987] [2024-11-18 23:31:37,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155218987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:37,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:37,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 23:31:37,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136772547] [2024-11-18 23:31:37,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:37,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 23:31:37,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:37,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 23:31:37,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-18 23:31:37,594 INFO L87 Difference]: Start difference. First operand 514 states and 743 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 23:31:44,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:44,723 INFO L93 Difference]: Finished difference Result 1245 states and 1770 transitions. [2024-11-18 23:31:44,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 23:31:44,724 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 270 [2024-11-18 23:31:44,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:44,729 INFO L225 Difference]: With dead ends: 1245 [2024-11-18 23:31:44,729 INFO L226 Difference]: Without dead ends: 734 [2024-11-18 23:31:44,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2024-11-18 23:31:44,731 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 1879 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:44,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1879 Valid, 1071 Invalid, 2056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-18 23:31:44,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2024-11-18 23:31:44,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 514. [2024-11-18 23:31:44,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 427 states have (on average 1.3817330210772834) internal successors, (590), 430 states have internal predecessors, (590), 76 states have call successors, (76), 10 states have call predecessors, (76), 10 states have return successors, (76), 73 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-18 23:31:44,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 742 transitions. [2024-11-18 23:31:44,766 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 742 transitions. Word has length 270 [2024-11-18 23:31:44,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:44,767 INFO L471 AbstractCegarLoop]: Abstraction has 514 states and 742 transitions. [2024-11-18 23:31:44,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 23:31:44,767 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 742 transitions. [2024-11-18 23:31:44,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-18 23:31:44,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:44,771 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:31:44,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 23:31:44,771 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:44,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:44,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1574055651, now seen corresponding path program 1 times [2024-11-18 23:31:44,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:44,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821419852] [2024-11-18 23:31:44,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:44,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-18 23:31:46,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:46,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821419852] [2024-11-18 23:31:46,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821419852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:46,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:46,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 23:31:46,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681720654] [2024-11-18 23:31:46,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:46,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 23:31:46,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:46,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 23:31:46,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:31:46,057 INFO L87 Difference]: Start difference. First operand 514 states and 742 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 23:31:47,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:47,419 INFO L93 Difference]: Finished difference Result 1280 states and 1830 transitions. [2024-11-18 23:31:47,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 23:31:47,420 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 270 [2024-11-18 23:31:47,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:47,425 INFO L225 Difference]: With dead ends: 1280 [2024-11-18 23:31:47,426 INFO L226 Difference]: Without dead ends: 769 [2024-11-18 23:31:47,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2024-11-18 23:31:47,428 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 927 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:47,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 705 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 23:31:47,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2024-11-18 23:31:47,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 527. [2024-11-18 23:31:47,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 440 states have (on average 1.3863636363636365) internal successors, (610), 443 states have internal predecessors, (610), 76 states have call successors, (76), 10 states have call predecessors, (76), 10 states have return successors, (76), 73 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-18 23:31:47,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 762 transitions. [2024-11-18 23:31:47,470 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 762 transitions. Word has length 270 [2024-11-18 23:31:47,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:47,473 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 762 transitions. [2024-11-18 23:31:47,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 23:31:47,474 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 762 transitions. [2024-11-18 23:31:47,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-18 23:31:47,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:47,478 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:31:47,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 23:31:47,478 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:47,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:47,479 INFO L85 PathProgramCache]: Analyzing trace with hash 294191973, now seen corresponding path program 1 times [2024-11-18 23:31:47,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:47,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012815392] [2024-11-18 23:31:47,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:47,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:48,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 84 proven. 33 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-18 23:31:48,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:48,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012815392] [2024-11-18 23:31:48,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012815392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:31:48,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490551835] [2024-11-18 23:31:48,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:48,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:31:48,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:31:48,016 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 23:31:48,017 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 23:31:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:48,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 23:31:48,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:31:49,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1613 proven. 237 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2024-11-18 23:31:49,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:31:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 90 proven. 141 refuted. 0 times theorem prover too weak. 2889 trivial. 0 not checked. [2024-11-18 23:31:49,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490551835] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:31:49,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:31:49,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 9] total 22 [2024-11-18 23:31:49,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531532959] [2024-11-18 23:31:49,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:31:49,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 23:31:49,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:49,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 23:31:49,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2024-11-18 23:31:49,882 INFO L87 Difference]: Start difference. First operand 527 states and 762 transitions. Second operand has 22 states, 22 states have (on average 7.454545454545454) internal successors, (164), 21 states have internal predecessors, (164), 7 states have call successors, (112), 4 states have call predecessors, (112), 8 states have return successors, (114), 7 states have call predecessors, (114), 7 states have call successors, (114) [2024-11-18 23:31:50,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:50,833 INFO L93 Difference]: Finished difference Result 1086 states and 1562 transitions. [2024-11-18 23:31:50,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 23:31:50,833 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.454545454545454) internal successors, (164), 21 states have internal predecessors, (164), 7 states have call successors, (112), 4 states have call predecessors, (112), 8 states have return successors, (114), 7 states have call predecessors, (114), 7 states have call successors, (114) Word has length 270 [2024-11-18 23:31:50,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:50,839 INFO L225 Difference]: With dead ends: 1086 [2024-11-18 23:31:50,840 INFO L226 Difference]: Without dead ends: 562 [2024-11-18 23:31:50,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=281, Invalid=711, Unknown=0, NotChecked=0, Total=992 [2024-11-18 23:31:50,842 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 1067 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:50,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 792 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 23:31:50,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-18 23:31:50,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 553. [2024-11-18 23:31:50,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 462 states have (on average 1.367965367965368) internal successors, (632), 465 states have internal predecessors, (632), 76 states have call successors, (76), 14 states have call predecessors, (76), 14 states have return successors, (76), 73 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-18 23:31:50,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 784 transitions. [2024-11-18 23:31:50,883 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 784 transitions. Word has length 270 [2024-11-18 23:31:50,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:50,885 INFO L471 AbstractCegarLoop]: Abstraction has 553 states and 784 transitions. [2024-11-18 23:31:50,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.454545454545454) internal successors, (164), 21 states have internal predecessors, (164), 7 states have call successors, (112), 4 states have call predecessors, (112), 8 states have return successors, (114), 7 states have call predecessors, (114), 7 states have call successors, (114) [2024-11-18 23:31:50,886 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 784 transitions. [2024-11-18 23:31:50,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-18 23:31:50,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:50,889 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:31:50,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 23:31:51,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:31:51,094 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:51,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:51,095 INFO L85 PathProgramCache]: Analyzing trace with hash -768790168, now seen corresponding path program 1 times [2024-11-18 23:31:51,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:51,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497771124] [2024-11-18 23:31:51,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:51,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:51,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 90 proven. 27 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-18 23:31:51,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:51,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497771124] [2024-11-18 23:31:51,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497771124] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:31:51,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322775587] [2024-11-18 23:31:51,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:51,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:31:51,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:31:51,623 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 23:31:51,624 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 23:31:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:51,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 23:31:51,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:31:52,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1190 proven. 48 refuted. 0 times theorem prover too weak. 1882 trivial. 0 not checked. [2024-11-18 23:31:52,072 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:31:52,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 90 proven. 27 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-18 23:31:52,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322775587] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:31:52,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:31:52,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7] total 15 [2024-11-18 23:31:52,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488405202] [2024-11-18 23:31:52,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:31:52,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 23:31:52,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:52,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 23:31:52,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-18 23:31:52,379 INFO L87 Difference]: Start difference. First operand 553 states and 784 transitions. Second operand has 15 states, 15 states have (on average 7.533333333333333) internal successors, (113), 15 states have internal predecessors, (113), 3 states have call successors, (49), 3 states have call predecessors, (49), 5 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2024-11-18 23:31:53,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:53,836 INFO L93 Difference]: Finished difference Result 1470 states and 2060 transitions. [2024-11-18 23:31:53,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-18 23:31:53,838 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.533333333333333) internal successors, (113), 15 states have internal predecessors, (113), 3 states have call successors, (49), 3 states have call predecessors, (49), 5 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 271 [2024-11-18 23:31:53,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:53,845 INFO L225 Difference]: With dead ends: 1470 [2024-11-18 23:31:53,846 INFO L226 Difference]: Without dead ends: 920 [2024-11-18 23:31:53,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 539 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=1000, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 23:31:53,849 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 1041 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:53,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 1597 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 23:31:53,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-11-18 23:31:53,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 639. [2024-11-18 23:31:53,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 497 states have (on average 1.3179074446680081) internal successors, (655), 501 states have internal predecessors, (655), 116 states have call successors, (116), 25 states have call predecessors, (116), 25 states have return successors, (116), 112 states have call predecessors, (116), 116 states have call successors, (116) [2024-11-18 23:31:53,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 887 transitions. [2024-11-18 23:31:53,937 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 887 transitions. Word has length 271 [2024-11-18 23:31:53,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:53,938 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 887 transitions. [2024-11-18 23:31:53,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.533333333333333) internal successors, (113), 15 states have internal predecessors, (113), 3 states have call successors, (49), 3 states have call predecessors, (49), 5 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2024-11-18 23:31:53,938 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 887 transitions. [2024-11-18 23:31:53,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-18 23:31:53,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:53,940 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:31:53,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 23:31:54,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:31:54,141 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:54,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:54,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1334653701, now seen corresponding path program 1 times [2024-11-18 23:31:54,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:54,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142972375] [2024-11-18 23:31:54,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:54,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:56,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-18 23:31:56,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:56,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142972375] [2024-11-18 23:31:56,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142972375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:56,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:56,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 23:31:56,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847748786] [2024-11-18 23:31:56,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:56,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 23:31:56,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:56,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 23:31:56,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:31:56,236 INFO L87 Difference]: Start difference. First operand 639 states and 887 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-18 23:31:57,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:57,660 INFO L93 Difference]: Finished difference Result 1538 states and 2128 transitions. [2024-11-18 23:31:57,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 23:31:57,661 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 272 [2024-11-18 23:31:57,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:57,666 INFO L225 Difference]: With dead ends: 1538 [2024-11-18 23:31:57,667 INFO L226 Difference]: Without dead ends: 973 [2024-11-18 23:31:57,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2024-11-18 23:31:57,669 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 1054 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:57,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 637 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 23:31:57,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2024-11-18 23:31:57,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 628. [2024-11-18 23:31:57,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 516 states have (on average 1.3488372093023255) internal successors, (696), 520 states have internal predecessors, (696), 89 states have call successors, (89), 22 states have call predecessors, (89), 22 states have return successors, (89), 85 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-18 23:31:57,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 874 transitions. [2024-11-18 23:31:57,728 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 874 transitions. Word has length 272 [2024-11-18 23:31:57,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:57,728 INFO L471 AbstractCegarLoop]: Abstraction has 628 states and 874 transitions. [2024-11-18 23:31:57,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-18 23:31:57,729 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 874 transitions. [2024-11-18 23:31:57,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-18 23:31:57,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:57,731 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:31:57,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 23:31:57,731 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:57,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:57,732 INFO L85 PathProgramCache]: Analyzing trace with hash 54790023, now seen corresponding path program 1 times [2024-11-18 23:31:57,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:57,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501349612] [2024-11-18 23:31:57,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:57,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:59,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-18 23:31:59,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:59,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501349612] [2024-11-18 23:31:59,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501349612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:59,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:59,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 23:31:59,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694566072] [2024-11-18 23:31:59,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:59,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 23:31:59,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:59,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 23:31:59,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-18 23:31:59,958 INFO L87 Difference]: Start difference. First operand 628 states and 874 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-18 23:32:02,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:32:02,935 INFO L93 Difference]: Finished difference Result 1629 states and 2252 transitions. [2024-11-18 23:32:02,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 23:32:02,935 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 272 [2024-11-18 23:32:02,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:32:02,942 INFO L225 Difference]: With dead ends: 1629 [2024-11-18 23:32:02,942 INFO L226 Difference]: Without dead ends: 1042 [2024-11-18 23:32:02,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2024-11-18 23:32:02,946 INFO L432 NwaCegarLoop]: 216 mSDtfsCounter, 1815 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1815 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:32:02,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1815 Valid, 817 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-18 23:32:02,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2024-11-18 23:32:03,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 642. [2024-11-18 23:32:03,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 530 states have (on average 1.3547169811320754) internal successors, (718), 534 states have internal predecessors, (718), 89 states have call successors, (89), 22 states have call predecessors, (89), 22 states have return successors, (89), 85 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-18 23:32:03,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 896 transitions. [2024-11-18 23:32:03,014 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 896 transitions. Word has length 272 [2024-11-18 23:32:03,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:32:03,015 INFO L471 AbstractCegarLoop]: Abstraction has 642 states and 896 transitions. [2024-11-18 23:32:03,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-18 23:32:03,015 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 896 transitions. [2024-11-18 23:32:03,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-18 23:32:03,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:32:03,017 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:32:03,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 23:32:03,017 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:32:03,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:32:03,018 INFO L85 PathProgramCache]: Analyzing trace with hash 477491849, now seen corresponding path program 1 times [2024-11-18 23:32:03,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:32:03,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4325334] [2024-11-18 23:32:03,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:32:03,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:32:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:32:03,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 39 proven. 78 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-18 23:32:03,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:32:03,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4325334] [2024-11-18 23:32:03,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4325334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:32:03,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036486903] [2024-11-18 23:32:03,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:32:03,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:32:03,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:32:03,464 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:32:03,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 23:32:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:32:03,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 23:32:03,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:32:04,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 2021 proven. 126 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2024-11-18 23:32:04,235 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:32:04,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 207 proven. 135 refuted. 0 times theorem prover too weak. 2778 trivial. 0 not checked. [2024-11-18 23:32:04,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036486903] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:32:04,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:32:04,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 12] total 24 [2024-11-18 23:32:04,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386192019] [2024-11-18 23:32:04,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:32:04,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-18 23:32:04,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:32:04,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-18 23:32:04,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-18 23:32:04,813 INFO L87 Difference]: Start difference. First operand 642 states and 896 transitions. Second operand has 24 states, 23 states have (on average 7.086956521739131) internal successors, (163), 22 states have internal predecessors, (163), 9 states have call successors, (108), 4 states have call predecessors, (108), 9 states have return successors, (109), 9 states have call predecessors, (109), 9 states have call successors, (109) [2024-11-18 23:32:06,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:32:06,272 INFO L93 Difference]: Finished difference Result 1431 states and 1974 transitions. [2024-11-18 23:32:06,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-18 23:32:06,274 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 7.086956521739131) internal successors, (163), 22 states have internal predecessors, (163), 9 states have call successors, (108), 4 states have call predecessors, (108), 9 states have return successors, (109), 9 states have call predecessors, (109), 9 states have call successors, (109) Word has length 272 [2024-11-18 23:32:06,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:32:06,280 INFO L225 Difference]: With dead ends: 1431 [2024-11-18 23:32:06,280 INFO L226 Difference]: Without dead ends: 830 [2024-11-18 23:32:06,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=830, Invalid=1822, Unknown=0, NotChecked=0, Total=2652 [2024-11-18 23:32:06,283 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 2198 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2198 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 23:32:06,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2198 Valid, 596 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 23:32:06,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2024-11-18 23:32:06,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 463. [2024-11-18 23:32:06,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 391 states have (on average 1.3478260869565217) internal successors, (527), 393 states have internal predecessors, (527), 54 states have call successors, (54), 17 states have call predecessors, (54), 17 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 23:32:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 635 transitions. [2024-11-18 23:32:06,361 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 635 transitions. Word has length 272 [2024-11-18 23:32:06,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:32:06,361 INFO L471 AbstractCegarLoop]: Abstraction has 463 states and 635 transitions. [2024-11-18 23:32:06,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 7.086956521739131) internal successors, (163), 22 states have internal predecessors, (163), 9 states have call successors, (108), 4 states have call predecessors, (108), 9 states have return successors, (109), 9 states have call predecessors, (109), 9 states have call successors, (109) [2024-11-18 23:32:06,362 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 635 transitions. [2024-11-18 23:32:06,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-18 23:32:06,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:32:06,366 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:32:06,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 23:32:06,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 23:32:06,567 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:32:06,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:32:06,567 INFO L85 PathProgramCache]: Analyzing trace with hash -834176678, now seen corresponding path program 1 times [2024-11-18 23:32:06,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:32:06,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312081180] [2024-11-18 23:32:06,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:32:06,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:32:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:32:07,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-18 23:32:07,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:32:07,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312081180] [2024-11-18 23:32:07,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312081180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:32:07,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:32:07,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 23:32:07,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719815230] [2024-11-18 23:32:07,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:32:07,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 23:32:07,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:32:07,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 23:32:07,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:32:07,752 INFO L87 Difference]: Start difference. First operand 463 states and 635 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 23:32:08,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:32:08,645 INFO L93 Difference]: Finished difference Result 986 states and 1357 transitions. [2024-11-18 23:32:08,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 23:32:08,646 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 272 [2024-11-18 23:32:08,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:32:08,649 INFO L225 Difference]: With dead ends: 986 [2024-11-18 23:32:08,650 INFO L226 Difference]: Without dead ends: 561 [2024-11-18 23:32:08,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-18 23:32:08,652 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 541 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 23:32:08,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 694 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 23:32:08,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-11-18 23:32:08,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 449. [2024-11-18 23:32:08,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 377 states have (on average 1.3342175066312998) internal successors, (503), 379 states have internal predecessors, (503), 54 states have call successors, (54), 17 states have call predecessors, (54), 17 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 23:32:08,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 611 transitions. [2024-11-18 23:32:08,705 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 611 transitions. Word has length 272 [2024-11-18 23:32:08,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:32:08,705 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 611 transitions. [2024-11-18 23:32:08,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 23:32:08,706 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 611 transitions. [2024-11-18 23:32:08,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-18 23:32:08,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:32:08,710 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:32:08,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 23:32:08,710 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:32:08,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:32:08,712 INFO L85 PathProgramCache]: Analyzing trace with hash -2114040356, now seen corresponding path program 1 times [2024-11-18 23:32:08,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:32:08,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307121726] [2024-11-18 23:32:08,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:32:08,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:32:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:32:12,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-18 23:32:12,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:32:12,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307121726] [2024-11-18 23:32:12,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307121726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:32:12,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:32:12,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 23:32:12,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173422371] [2024-11-18 23:32:12,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:32:12,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 23:32:12,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:32:12,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 23:32:12,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:32:12,586 INFO L87 Difference]: Start difference. First operand 449 states and 611 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 23:32:15,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:32:15,085 INFO L93 Difference]: Finished difference Result 1212 states and 1659 transitions. [2024-11-18 23:32:15,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 23:32:15,085 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 272 [2024-11-18 23:32:15,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:32:15,090 INFO L225 Difference]: With dead ends: 1212 [2024-11-18 23:32:15,090 INFO L226 Difference]: Without dead ends: 801 [2024-11-18 23:32:15,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-11-18 23:32:15,092 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 1322 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1322 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 23:32:15,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1322 Valid, 724 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 23:32:15,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2024-11-18 23:32:15,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 489. [2024-11-18 23:32:15,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 417 states have (on average 1.3501199040767387) internal successors, (563), 419 states have internal predecessors, (563), 54 states have call successors, (54), 17 states have call predecessors, (54), 17 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 23:32:15,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 671 transitions. [2024-11-18 23:32:15,159 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 671 transitions. Word has length 272 [2024-11-18 23:32:15,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:32:15,160 INFO L471 AbstractCegarLoop]: Abstraction has 489 states and 671 transitions. [2024-11-18 23:32:15,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 23:32:15,160 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 671 transitions. [2024-11-18 23:32:15,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-18 23:32:15,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:32:15,163 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:32:15,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 23:32:15,163 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:32:15,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:32:15,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1691338530, now seen corresponding path program 1 times [2024-11-18 23:32:15,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:32:15,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124165825] [2024-11-18 23:32:15,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:32:15,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:32:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:32:15,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 150 proven. 78 refuted. 0 times theorem prover too weak. 2892 trivial. 0 not checked. [2024-11-18 23:32:15,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:32:15,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124165825] [2024-11-18 23:32:15,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124165825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:32:15,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034763290] [2024-11-18 23:32:15,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:32:15,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:32:15,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:32:15,639 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:32:15,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 23:32:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:32:15,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 23:32:15,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:32:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1985 proven. 87 refuted. 0 times theorem prover too weak. 1048 trivial. 0 not checked. [2024-11-18 23:32:16,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:32:16,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 246 proven. 96 refuted. 0 times theorem prover too weak. 2778 trivial. 0 not checked. [2024-11-18 23:32:16,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034763290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:32:16,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:32:16,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 12] total 24 [2024-11-18 23:32:16,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952165522] [2024-11-18 23:32:16,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:32:16,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-18 23:32:16,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:32:16,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-18 23:32:16,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2024-11-18 23:32:16,859 INFO L87 Difference]: Start difference. First operand 489 states and 671 transitions. Second operand has 24 states, 23 states have (on average 7.304347826086956) internal successors, (168), 22 states have internal predecessors, (168), 8 states have call successors, (82), 4 states have call predecessors, (82), 9 states have return successors, (83), 8 states have call predecessors, (83), 8 states have call successors, (83) [2024-11-18 23:32:18,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:32:18,379 INFO L93 Difference]: Finished difference Result 1433 states and 1957 transitions. [2024-11-18 23:32:18,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-18 23:32:18,380 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 7.304347826086956) internal successors, (168), 22 states have internal predecessors, (168), 8 states have call successors, (82), 4 states have call predecessors, (82), 9 states have return successors, (83), 8 states have call predecessors, (83), 8 states have call successors, (83) Word has length 272 [2024-11-18 23:32:18,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:32:18,384 INFO L225 Difference]: With dead ends: 1433 [2024-11-18 23:32:18,384 INFO L226 Difference]: Without dead ends: 982 [2024-11-18 23:32:18,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 536 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=850, Invalid=2230, Unknown=0, NotChecked=0, Total=3080 [2024-11-18 23:32:18,386 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 1592 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 23:32:18,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1592 Valid, 1158 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 23:32:18,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2024-11-18 23:32:18,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 465. [2024-11-18 23:32:18,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 389 states have (on average 1.3033419023136248) internal successors, (507), 391 states have internal predecessors, (507), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 23:32:18,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 615 transitions. [2024-11-18 23:32:18,444 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 615 transitions. Word has length 272 [2024-11-18 23:32:18,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:32:18,444 INFO L471 AbstractCegarLoop]: Abstraction has 465 states and 615 transitions. [2024-11-18 23:32:18,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 7.304347826086956) internal successors, (168), 22 states have internal predecessors, (168), 8 states have call successors, (82), 4 states have call predecessors, (82), 9 states have return successors, (83), 8 states have call predecessors, (83), 8 states have call successors, (83) [2024-11-18 23:32:18,445 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 615 transitions. [2024-11-18 23:32:18,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2024-11-18 23:32:18,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:32:18,447 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:32:18,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 23:32:18,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 23:32:18,648 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:32:18,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:32:18,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1233532760, now seen corresponding path program 1 times [2024-11-18 23:32:18,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:32:18,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025128701] [2024-11-18 23:32:18,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:32:18,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:32:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:32:18,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-18 23:32:18,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:32:18,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025128701] [2024-11-18 23:32:18,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025128701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:32:18,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:32:18,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:32:18,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802188187] [2024-11-18 23:32:18,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:32:18,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:32:18,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:32:18,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:32:18,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:32:18,913 INFO L87 Difference]: Start difference. First operand 465 states and 615 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 23:32:19,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:32:19,255 INFO L93 Difference]: Finished difference Result 1006 states and 1355 transitions. [2024-11-18 23:32:19,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:32:19,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 275 [2024-11-18 23:32:19,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:32:19,259 INFO L225 Difference]: With dead ends: 1006 [2024-11-18 23:32:19,260 INFO L226 Difference]: Without dead ends: 579 [2024-11-18 23:32:19,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:32:19,261 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 226 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:32:19,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 613 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:32:19,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-18 23:32:19,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 473. [2024-11-18 23:32:19,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 397 states have (on average 1.2972292191435768) internal successors, (515), 399 states have internal predecessors, (515), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 23:32:19,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 623 transitions. [2024-11-18 23:32:19,334 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 623 transitions. Word has length 275 [2024-11-18 23:32:19,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:32:19,334 INFO L471 AbstractCegarLoop]: Abstraction has 473 states and 623 transitions. [2024-11-18 23:32:19,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 23:32:19,337 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 623 transitions. [2024-11-18 23:32:19,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2024-11-18 23:32:19,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:32:19,339 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:32:19,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 23:32:19,340 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:32:19,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:32:19,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1473086634, now seen corresponding path program 1 times [2024-11-18 23:32:19,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:32:19,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212425921] [2024-11-18 23:32:19,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:32:19,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:32:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat