./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-81.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_amount50_file-81.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 6d1c02b3372a206bee55669628072c3bed3eaa07fdec8b30d7cf878b8d085487 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 00:18:10,391 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 00:18:10,444 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 00:18:10,449 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 00:18:10,449 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 00:18:10,475 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 00:18:10,475 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 00:18:10,475 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 00:18:10,477 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 00:18:10,477 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 00:18:10,477 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 00:18:10,478 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 00:18:10,479 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 00:18:10,479 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 00:18:10,479 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 00:18:10,481 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 00:18:10,481 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 00:18:10,481 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 00:18:10,482 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 00:18:10,482 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 00:18:10,485 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 00:18:10,485 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 00:18:10,485 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 00:18:10,485 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 00:18:10,486 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 00:18:10,486 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 00:18:10,486 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 00:18:10,486 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 00:18:10,486 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 00:18:10,486 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 00:18:10,487 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 00:18:10,487 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 00:18:10,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 00:18:10,487 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 00:18:10,487 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 00:18:10,487 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 00:18:10,487 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 00:18:10,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 00:18:10,488 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 00:18:10,488 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 00:18:10,489 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 00:18:10,489 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 00:18:10,490 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d1c02b3372a206bee55669628072c3bed3eaa07fdec8b30d7cf878b8d085487 [2024-11-19 00:18:10,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 00:18:10,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 00:18:10,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 00:18:10,727 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 00:18:10,728 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 00:18:10,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-81.i [2024-11-19 00:18:12,034 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 00:18:12,242 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 00:18:12,243 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-81.i [2024-11-19 00:18:12,256 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f882555f5/f27bc62e850c4d22ba0b48b7ea5b8822/FLAGb3de10808 [2024-11-19 00:18:12,606 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f882555f5/f27bc62e850c4d22ba0b48b7ea5b8822 [2024-11-19 00:18:12,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 00:18:12,610 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 00:18:12,611 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 00:18:12,611 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 00:18:12,622 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 00:18:12,623 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 12:18:12" (1/1) ... [2024-11-19 00:18:12,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9009a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:18:12, skipping insertion in model container [2024-11-19 00:18:12,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 12:18:12" (1/1) ... [2024-11-19 00:18:12,657 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 00:18:12,831 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_amount50_file-81.i[915,928] [2024-11-19 00:18:12,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 00:18:12,924 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 00:18:12,936 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_amount50_file-81.i[915,928] [2024-11-19 00:18:12,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 00:18:12,996 INFO L204 MainTranslator]: Completed translation [2024-11-19 00:18:12,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:18:12 WrapperNode [2024-11-19 00:18:12,999 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 00:18:13,000 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 00:18:13,000 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 00:18:13,000 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 00:18:13,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:18:12" (1/1) ... [2024-11-19 00:18:13,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:18:12" (1/1) ... [2024-11-19 00:18:13,064 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 179 [2024-11-19 00:18:13,065 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 00:18:13,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 00:18:13,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 00:18:13,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 00:18:13,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:18:12" (1/1) ... [2024-11-19 00:18:13,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:18:12" (1/1) ... [2024-11-19 00:18:13,079 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:18:12" (1/1) ... [2024-11-19 00:18:13,114 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]. [2024-11-19 00:18:13,115 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:18:12" (1/1) ... [2024-11-19 00:18:13,115 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:18:12" (1/1) ... [2024-11-19 00:18:13,122 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:18:12" (1/1) ... [2024-11-19 00:18:13,124 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:18:12" (1/1) ... [2024-11-19 00:18:13,125 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:18:12" (1/1) ... [2024-11-19 00:18:13,127 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:18:12" (1/1) ... [2024-11-19 00:18:13,130 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 00:18:13,130 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 00:18:13,130 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 00:18:13,131 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 00:18:13,131 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:18:12" (1/1) ... [2024-11-19 00:18:13,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 00:18:13,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:18:13,177 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) [2024-11-19 00:18:13,192 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 [2024-11-19 00:18:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 00:18:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 00:18:13,234 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 00:18:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 00:18:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 00:18:13,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 00:18:13,308 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 00:18:13,310 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 00:18:13,615 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-19 00:18:13,618 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 00:18:13,638 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 00:18:13,642 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 00:18:13,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 12:18:13 BoogieIcfgContainer [2024-11-19 00:18:13,643 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 00:18:13,645 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 00:18:13,645 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 00:18:13,648 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 00:18:13,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 12:18:12" (1/3) ... [2024-11-19 00:18:13,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3870ff5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 12:18:13, skipping insertion in model container [2024-11-19 00:18:13,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:18:12" (2/3) ... [2024-11-19 00:18:13,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3870ff5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 12:18:13, skipping insertion in model container [2024-11-19 00:18:13,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 12:18:13" (3/3) ... [2024-11-19 00:18:13,650 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-81.i [2024-11-19 00:18:13,666 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 00:18:13,666 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 00:18:13,723 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 00:18:13,729 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;@41a104ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 00:18:13,730 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 00:18:13,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 48 states have (on average 1.375) internal successors, (66), 49 states have internal predecessors, (66), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-19 00:18:13,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-19 00:18:13,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:18:13,751 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:18:13,752 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:18:13,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:18:13,764 INFO L85 PathProgramCache]: Analyzing trace with hash 409085708, now seen corresponding path program 1 times [2024-11-19 00:18:13,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:18:13,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877025714] [2024-11-19 00:18:13,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:18:13,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:18:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:18:14,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-11-19 00:18:14,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:18:14,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877025714] [2024-11-19 00:18:14,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877025714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:18:14,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381818655] [2024-11-19 00:18:14,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:18:14,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:18:14,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:18:14,053 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) [2024-11-19 00:18:14,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 00:18:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:18:14,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 00:18:14,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:18:14,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-11-19 00:18:14,221 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 00:18:14,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381818655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:18:14,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:18:14,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 00:18:14,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504061666] [2024-11-19 00:18:14,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:18:14,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 00:18:14,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:18:14,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 00:18:14,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 00:18:14,247 INFO L87 Difference]: Start difference. First operand has 77 states, 48 states have (on average 1.375) internal successors, (66), 49 states have internal predecessors, (66), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-19 00:18:14,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:18:14,272 INFO L93 Difference]: Finished difference Result 147 states and 256 transitions. [2024-11-19 00:18:14,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 00:18:14,274 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 163 [2024-11-19 00:18:14,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:18:14,281 INFO L225 Difference]: With dead ends: 147 [2024-11-19 00:18:14,281 INFO L226 Difference]: Without dead ends: 73 [2024-11-19 00:18:14,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 00:18:14,287 INFO L432 NwaCegarLoop]: 111 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, 111 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 [2024-11-19 00:18:14,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:18:14,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-19 00:18:14,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-19 00:18:14,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 45 states have internal predecessors, (59), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-19 00:18:14,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 111 transitions. [2024-11-19 00:18:14,323 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 111 transitions. Word has length 163 [2024-11-19 00:18:14,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:18:14,323 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 111 transitions. [2024-11-19 00:18:14,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-19 00:18:14,324 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 111 transitions. [2024-11-19 00:18:14,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-19 00:18:14,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:18:14,344 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:18:14,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 00:18:14,544 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 [2024-11-19 00:18:14,545 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:18:14,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:18:14,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1193130060, now seen corresponding path program 1 times [2024-11-19 00:18:14,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:18:14,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400212442] [2024-11-19 00:18:14,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:18:14,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:18:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:18:25,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-19 00:18:25,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:18:25,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400212442] [2024-11-19 00:18:25,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400212442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:18:25,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:18:25,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 00:18:25,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966870697] [2024-11-19 00:18:25,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:18:25,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 00:18:25,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:18:25,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 00:18:25,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-19 00:18:25,410 INFO L87 Difference]: Start difference. First operand 73 states and 111 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-19 00:18:28,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:18:28,353 INFO L93 Difference]: Finished difference Result 321 states and 480 transitions. [2024-11-19 00:18:28,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 00:18:28,354 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 163 [2024-11-19 00:18:28,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:18:28,358 INFO L225 Difference]: With dead ends: 321 [2024-11-19 00:18:28,358 INFO L226 Difference]: Without dead ends: 251 [2024-11-19 00:18:28,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2024-11-19 00:18:28,362 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 679 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:18:28,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 514 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 00:18:28,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-19 00:18:28,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 132. [2024-11-19 00:18:28,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 77 states have (on average 1.2857142857142858) internal successors, (99), 77 states have internal predecessors, (99), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:18:28,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 203 transitions. [2024-11-19 00:18:28,421 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 203 transitions. Word has length 163 [2024-11-19 00:18:28,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:18:28,422 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 203 transitions. [2024-11-19 00:18:28,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-19 00:18:28,423 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 203 transitions. [2024-11-19 00:18:28,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-19 00:18:28,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:18:28,428 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:18:28,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 00:18:28,428 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:18:28,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:18:28,429 INFO L85 PathProgramCache]: Analyzing trace with hash 800103050, now seen corresponding path program 1 times [2024-11-19 00:18:28,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:18:28,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819216405] [2024-11-19 00:18:28,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:18:28,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:18:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:18:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-19 00:18:28,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:18:28,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819216405] [2024-11-19 00:18:28,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819216405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:18:28,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:18:28,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 00:18:28,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565210456] [2024-11-19 00:18:28,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:18:28,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 00:18:28,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:18:28,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 00:18:28,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 00:18:28,636 INFO L87 Difference]: Start difference. First operand 132 states and 203 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-19 00:18:28,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:18:28,686 INFO L93 Difference]: Finished difference Result 237 states and 360 transitions. [2024-11-19 00:18:28,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 00:18:28,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 163 [2024-11-19 00:18:28,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:18:28,692 INFO L225 Difference]: With dead ends: 237 [2024-11-19 00:18:28,692 INFO L226 Difference]: Without dead ends: 167 [2024-11-19 00:18:28,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 00:18:28,693 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 42 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:18:28,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 324 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:18:28,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-19 00:18:28,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 164. [2024-11-19 00:18:28,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 104 states have (on average 1.2980769230769231) internal successors, (135), 105 states have internal predecessors, (135), 56 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-19 00:18:28,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 247 transitions. [2024-11-19 00:18:28,712 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 247 transitions. Word has length 163 [2024-11-19 00:18:28,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:18:28,713 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 247 transitions. [2024-11-19 00:18:28,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-19 00:18:28,717 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 247 transitions. [2024-11-19 00:18:28,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-19 00:18:28,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:18:28,721 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:18:28,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 00:18:28,721 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:18:28,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:18:28,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1894194638, now seen corresponding path program 1 times [2024-11-19 00:18:28,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:18:28,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693329439] [2024-11-19 00:18:28,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:18:28,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:18:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:18:35,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-19 00:18:35,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:18:35,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693329439] [2024-11-19 00:18:35,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693329439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:18:35,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:18:35,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 00:18:35,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928245968] [2024-11-19 00:18:35,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:18:35,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 00:18:35,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:18:35,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 00:18:35,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-19 00:18:35,358 INFO L87 Difference]: Start difference. First operand 164 states and 247 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-19 00:18:38,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:18:38,070 INFO L93 Difference]: Finished difference Result 372 states and 546 transitions. [2024-11-19 00:18:38,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 00:18:38,071 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 163 [2024-11-19 00:18:38,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:18:38,076 INFO L225 Difference]: With dead ends: 372 [2024-11-19 00:18:38,077 INFO L226 Difference]: Without dead ends: 270 [2024-11-19 00:18:38,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2024-11-19 00:18:38,080 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 418 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:18:38,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 521 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-19 00:18:38,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-19 00:18:38,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 164. [2024-11-19 00:18:38,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 104 states have (on average 1.2980769230769231) internal successors, (135), 105 states have internal predecessors, (135), 56 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-19 00:18:38,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 247 transitions. [2024-11-19 00:18:38,108 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 247 transitions. Word has length 163 [2024-11-19 00:18:38,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:18:38,109 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 247 transitions. [2024-11-19 00:18:38,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-19 00:18:38,109 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 247 transitions. [2024-11-19 00:18:38,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-19 00:18:38,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:18:38,110 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:18:38,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 00:18:38,110 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:18:38,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:18:38,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1451295498, now seen corresponding path program 1 times [2024-11-19 00:18:38,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:18:38,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955116169] [2024-11-19 00:18:38,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:18:38,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:18:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:18:38,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-19 00:18:38,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:18:38,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955116169] [2024-11-19 00:18:38,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955116169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:18:38,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:18:38,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 00:18:38,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188592861] [2024-11-19 00:18:38,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:18:38,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 00:18:38,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:18:38,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 00:18:38,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:18:38,632 INFO L87 Difference]: Start difference. First operand 164 states and 247 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-19 00:18:39,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:18:39,029 INFO L93 Difference]: Finished difference Result 312 states and 467 transitions. [2024-11-19 00:18:39,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 00:18:39,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 163 [2024-11-19 00:18:39,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:18:39,032 INFO L225 Difference]: With dead ends: 312 [2024-11-19 00:18:39,033 INFO L226 Difference]: Without dead ends: 210 [2024-11-19 00:18:39,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-19 00:18:39,035 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 136 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 00:18:39,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 391 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 00:18:39,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-19 00:18:39,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 170. [2024-11-19 00:18:39,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 110 states have (on average 1.290909090909091) internal successors, (142), 111 states have internal predecessors, (142), 56 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-19 00:18:39,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 254 transitions. [2024-11-19 00:18:39,055 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 254 transitions. Word has length 163 [2024-11-19 00:18:39,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:18:39,056 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 254 transitions. [2024-11-19 00:18:39,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-19 00:18:39,056 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 254 transitions. [2024-11-19 00:18:39,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-19 00:18:39,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:18:39,058 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:18:39,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 00:18:39,058 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:18:39,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:18:39,059 INFO L85 PathProgramCache]: Analyzing trace with hash 182012810, now seen corresponding path program 1 times [2024-11-19 00:18:39,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:18:39,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328765106] [2024-11-19 00:18:39,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:18:39,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:18:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:18:44,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-19 00:18:44,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:18:44,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328765106] [2024-11-19 00:18:44,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328765106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:18:44,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:18:44,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 00:18:44,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053300082] [2024-11-19 00:18:44,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:18:44,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 00:18:44,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:18:44,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 00:18:44,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-19 00:18:44,915 INFO L87 Difference]: Start difference. First operand 170 states and 254 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-19 00:18:46,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:18:46,174 INFO L93 Difference]: Finished difference Result 341 states and 498 transitions. [2024-11-19 00:18:46,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 00:18:46,174 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 163 [2024-11-19 00:18:46,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:18:46,176 INFO L225 Difference]: With dead ends: 341 [2024-11-19 00:18:46,176 INFO L226 Difference]: Without dead ends: 239 [2024-11-19 00:18:46,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-19 00:18:46,177 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 164 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 00:18:46,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 515 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 00:18:46,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-19 00:18:46,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 171. [2024-11-19 00:18:46,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 111 states have (on average 1.2972972972972974) internal successors, (144), 112 states have internal predecessors, (144), 56 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-19 00:18:46,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 256 transitions. [2024-11-19 00:18:46,190 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 256 transitions. Word has length 163 [2024-11-19 00:18:46,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:18:46,191 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 256 transitions. [2024-11-19 00:18:46,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-19 00:18:46,191 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 256 transitions. [2024-11-19 00:18:46,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-19 00:18:46,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:18:46,192 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:18:46,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 00:18:46,193 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:18:46,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:18:46,193 INFO L85 PathProgramCache]: Analyzing trace with hash 883077388, now seen corresponding path program 1 times [2024-11-19 00:18:46,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:18:46,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554084535] [2024-11-19 00:18:46,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:18:46,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:18:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:18:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-19 00:18:52,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:18:52,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554084535] [2024-11-19 00:18:52,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554084535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:18:52,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:18:52,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 00:18:52,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95865852] [2024-11-19 00:18:52,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:18:52,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 00:18:52,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:18:52,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 00:18:52,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-19 00:18:52,633 INFO L87 Difference]: Start difference. First operand 171 states and 256 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-19 00:18:53,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:18:53,783 INFO L93 Difference]: Finished difference Result 322 states and 474 transitions. [2024-11-19 00:18:53,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 00:18:53,784 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 163 [2024-11-19 00:18:53,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:18:53,786 INFO L225 Difference]: With dead ends: 322 [2024-11-19 00:18:53,786 INFO L226 Difference]: Without dead ends: 210 [2024-11-19 00:18:53,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-19 00:18:53,788 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 177 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 00:18:53,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 399 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 00:18:53,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-19 00:18:53,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 168. [2024-11-19 00:18:53,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 108 states have (on average 1.2962962962962963) internal successors, (140), 109 states have internal predecessors, (140), 56 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-19 00:18:53,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 252 transitions. [2024-11-19 00:18:53,803 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 252 transitions. Word has length 163 [2024-11-19 00:18:53,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:18:53,804 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 252 transitions. [2024-11-19 00:18:53,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-19 00:18:53,804 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 252 transitions. [2024-11-19 00:18:53,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-19 00:18:53,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:18:53,806 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:18:53,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 00:18:53,806 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:18:53,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:18:53,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1839498733, now seen corresponding path program 1 times [2024-11-19 00:18:53,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:18:53,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725513101] [2024-11-19 00:18:53,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:18:53,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:18:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:18:53,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-19 00:18:53,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:18:53,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725513101] [2024-11-19 00:18:53,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725513101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:18:53,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:18:53,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 00:18:53,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951034161] [2024-11-19 00:18:53,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:18:53,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 00:18:53,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:18:53,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 00:18:53,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 00:18:53,981 INFO L87 Difference]: Start difference. First operand 168 states and 252 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-19 00:18:54,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:18:54,030 INFO L93 Difference]: Finished difference Result 306 states and 450 transitions. [2024-11-19 00:18:54,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 00:18:54,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 164 [2024-11-19 00:18:54,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:18:54,032 INFO L225 Difference]: With dead ends: 306 [2024-11-19 00:18:54,032 INFO L226 Difference]: Without dead ends: 194 [2024-11-19 00:18:54,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 00:18:54,033 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 62 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:18:54,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 317 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:18:54,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-19 00:18:54,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 163. [2024-11-19 00:18:54,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 106 states have (on average 1.2924528301886793) internal successors, (137), 106 states have internal predecessors, (137), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:18:54,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 241 transitions. [2024-11-19 00:18:54,051 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 241 transitions. Word has length 164 [2024-11-19 00:18:54,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:18:54,051 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 241 transitions. [2024-11-19 00:18:54,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-19 00:18:54,052 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 241 transitions. [2024-11-19 00:18:54,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-19 00:18:54,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:18:54,053 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:18:54,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 00:18:54,053 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:18:54,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:18:54,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2062441553, now seen corresponding path program 1 times [2024-11-19 00:18:54,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:18:54,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465241950] [2024-11-19 00:18:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:18:54,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:18:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:19:00,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-19 00:19:00,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:19:00,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465241950] [2024-11-19 00:19:00,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465241950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:19:00,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:19:00,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 00:19:00,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238274247] [2024-11-19 00:19:00,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:19:00,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 00:19:00,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:19:00,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 00:19:00,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-19 00:19:00,282 INFO L87 Difference]: Start difference. First operand 163 states and 241 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-19 00:19:02,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:19:02,267 INFO L93 Difference]: Finished difference Result 341 states and 496 transitions. [2024-11-19 00:19:02,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 00:19:02,267 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 164 [2024-11-19 00:19:02,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:19:02,269 INFO L225 Difference]: With dead ends: 341 [2024-11-19 00:19:02,269 INFO L226 Difference]: Without dead ends: 241 [2024-11-19 00:19:02,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2024-11-19 00:19:02,270 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 237 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 00:19:02,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 478 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 00:19:02,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-19 00:19:02,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 171. [2024-11-19 00:19:02,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 114 states have (on average 1.3070175438596492) internal successors, (149), 114 states have internal predecessors, (149), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:19:02,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 253 transitions. [2024-11-19 00:19:02,281 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 253 transitions. Word has length 164 [2024-11-19 00:19:02,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:19:02,282 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 253 transitions. [2024-11-19 00:19:02,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-19 00:19:02,282 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 253 transitions. [2024-11-19 00:19:02,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-19 00:19:02,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:19:02,283 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:19:02,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 00:19:02,284 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:19:02,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:19:02,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1531461165, now seen corresponding path program 1 times [2024-11-19 00:19:02,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:19:02,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451099574] [2024-11-19 00:19:02,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:19:02,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:19:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:19:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-19 00:19:07,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:19:07,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451099574] [2024-11-19 00:19:07,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451099574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:19:07,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:19:07,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 00:19:07,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896779755] [2024-11-19 00:19:07,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:19:07,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 00:19:07,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:19:07,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 00:19:07,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-19 00:19:07,701 INFO L87 Difference]: Start difference. First operand 171 states and 253 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-19 00:19:09,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:19:09,335 INFO L93 Difference]: Finished difference Result 362 states and 524 transitions. [2024-11-19 00:19:09,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 00:19:09,336 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 164 [2024-11-19 00:19:09,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:19:09,343 INFO L225 Difference]: With dead ends: 362 [2024-11-19 00:19:09,343 INFO L226 Difference]: Without dead ends: 262 [2024-11-19 00:19:09,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2024-11-19 00:19:09,344 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 299 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 00:19:09,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 548 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 00:19:09,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-19 00:19:09,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 174. [2024-11-19 00:19:09,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 117 states have (on average 1.3076923076923077) internal successors, (153), 117 states have internal predecessors, (153), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:19:09,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 257 transitions. [2024-11-19 00:19:09,375 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 257 transitions. Word has length 164 [2024-11-19 00:19:09,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:19:09,376 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 257 transitions. [2024-11-19 00:19:09,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-19 00:19:09,376 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 257 transitions. [2024-11-19 00:19:09,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-19 00:19:09,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:19:09,377 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:19:09,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 00:19:09,378 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:19:09,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:19:09,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1752388881, now seen corresponding path program 1 times [2024-11-19 00:19:09,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:19:09,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541800557] [2024-11-19 00:19:09,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:19:09,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:19:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:19:13,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-19 00:19:13,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:19:13,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541800557] [2024-11-19 00:19:13,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541800557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:19:13,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:19:13,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 00:19:13,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866986271] [2024-11-19 00:19:13,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:19:13,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 00:19:13,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:19:13,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 00:19:13,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-19 00:19:13,997 INFO L87 Difference]: Start difference. First operand 174 states and 257 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-19 00:19:14,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:19:14,646 INFO L93 Difference]: Finished difference Result 316 states and 461 transitions. [2024-11-19 00:19:14,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 00:19:14,647 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 164 [2024-11-19 00:19:14,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:19:14,648 INFO L225 Difference]: With dead ends: 316 [2024-11-19 00:19:14,649 INFO L226 Difference]: Without dead ends: 216 [2024-11-19 00:19:14,649 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-19 00:19:14,649 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 137 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:19:14,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 389 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:19:14,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-19 00:19:14,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 171. [2024-11-19 00:19:14,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 114 states have (on average 1.3070175438596492) internal successors, (149), 114 states have internal predecessors, (149), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:19:14,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 253 transitions. [2024-11-19 00:19:14,663 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 253 transitions. Word has length 164 [2024-11-19 00:19:14,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:19:14,664 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 253 transitions. [2024-11-19 00:19:14,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-19 00:19:14,664 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 253 transitions. [2024-11-19 00:19:14,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-19 00:19:14,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:19:14,665 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:19:14,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 00:19:14,665 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:19:14,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:19:14,666 INFO L85 PathProgramCache]: Analyzing trace with hash -559635055, now seen corresponding path program 1 times [2024-11-19 00:19:14,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:19:14,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142329729] [2024-11-19 00:19:14,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:19:14,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:19:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:19:18,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-19 00:19:18,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:19:18,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142329729] [2024-11-19 00:19:18,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142329729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:19:18,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:19:18,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 00:19:18,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848511331] [2024-11-19 00:19:18,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:19:18,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 00:19:18,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:19:18,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 00:19:18,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-19 00:19:18,469 INFO L87 Difference]: Start difference. First operand 171 states and 253 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-19 00:19:19,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:19:19,876 INFO L93 Difference]: Finished difference Result 426 states and 613 transitions. [2024-11-19 00:19:19,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 00:19:19,877 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 164 [2024-11-19 00:19:19,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:19:19,879 INFO L225 Difference]: With dead ends: 426 [2024-11-19 00:19:19,879 INFO L226 Difference]: Without dead ends: 318 [2024-11-19 00:19:19,879 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2024-11-19 00:19:19,880 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 457 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 00:19:19,880 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 555 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 00:19:19,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-19 00:19:19,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 175. [2024-11-19 00:19:19,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 118 states have (on average 1.3135593220338984) internal successors, (155), 118 states have internal predecessors, (155), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:19:19,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 259 transitions. [2024-11-19 00:19:19,896 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 259 transitions. Word has length 164 [2024-11-19 00:19:19,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:19:19,896 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 259 transitions. [2024-11-19 00:19:19,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-19 00:19:19,896 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 259 transitions. [2024-11-19 00:19:19,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-19 00:19:19,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:19:19,897 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:19:19,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 00:19:19,897 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:19:19,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:19:19,898 INFO L85 PathProgramCache]: Analyzing trace with hash -952662065, now seen corresponding path program 1 times [2024-11-19 00:19:19,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:19:19,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475392292] [2024-11-19 00:19:19,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:19:19,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:19:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:19:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-19 00:19:24,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:19:24,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475392292] [2024-11-19 00:19:24,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475392292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:19:24,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:19:24,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 00:19:24,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155812939] [2024-11-19 00:19:24,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:19:24,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 00:19:24,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:19:24,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 00:19:24,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-19 00:19:24,846 INFO L87 Difference]: Start difference. First operand 175 states and 259 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-19 00:19:25,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:19:25,968 INFO L93 Difference]: Finished difference Result 387 states and 561 transitions. [2024-11-19 00:19:25,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 00:19:25,969 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 164 [2024-11-19 00:19:25,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:19:25,970 INFO L225 Difference]: With dead ends: 387 [2024-11-19 00:19:25,970 INFO L226 Difference]: Without dead ends: 279 [2024-11-19 00:19:25,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2024-11-19 00:19:25,971 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 323 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 00:19:25,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 536 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 00:19:25,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-19 00:19:25,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 177. [2024-11-19 00:19:25,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 120 states have (on average 1.325) internal successors, (159), 120 states have internal predecessors, (159), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:19:25,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 263 transitions. [2024-11-19 00:19:25,983 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 263 transitions. Word has length 164 [2024-11-19 00:19:25,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:19:25,983 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 263 transitions. [2024-11-19 00:19:25,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-19 00:19:25,983 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 263 transitions. [2024-11-19 00:19:25,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-19 00:19:25,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:19:25,984 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:19:25,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 00:19:25,984 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:19:25,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:19:25,985 INFO L85 PathProgramCache]: Analyzing trace with hash 141429523, now seen corresponding path program 1 times [2024-11-19 00:19:25,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:19:25,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253312928] [2024-11-19 00:19:25,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:19:25,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:19:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:19:31,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-19 00:19:31,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:19:31,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253312928] [2024-11-19 00:19:31,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253312928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:19:31,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:19:31,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-19 00:19:31,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38476139] [2024-11-19 00:19:31,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:19:31,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 00:19:31,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:19:31,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 00:19:31,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-19 00:19:31,186 INFO L87 Difference]: Start difference. First operand 177 states and 263 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-19 00:19:32,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:19:32,744 INFO L93 Difference]: Finished difference Result 407 states and 589 transitions. [2024-11-19 00:19:32,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 00:19:32,745 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 164 [2024-11-19 00:19:32,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:19:32,746 INFO L225 Difference]: With dead ends: 407 [2024-11-19 00:19:32,746 INFO L226 Difference]: Without dead ends: 299 [2024-11-19 00:19:32,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2024-11-19 00:19:32,747 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 541 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 00:19:32,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 494 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 00:19:32,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-19 00:19:32,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 178. [2024-11-19 00:19:32,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 121 states have (on average 1.3305785123966942) internal successors, (161), 121 states have internal predecessors, (161), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:19:32,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 265 transitions. [2024-11-19 00:19:32,761 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 265 transitions. Word has length 164 [2024-11-19 00:19:32,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:19:32,761 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 265 transitions. [2024-11-19 00:19:32,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-19 00:19:32,762 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 265 transitions. [2024-11-19 00:19:32,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-19 00:19:32,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:19:32,763 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:19:32,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 00:19:32,763 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:19:32,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:19:32,764 INFO L85 PathProgramCache]: Analyzing trace with hash -251597487, now seen corresponding path program 1 times [2024-11-19 00:19:32,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:19:32,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826363094] [2024-11-19 00:19:32,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:19:32,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:19:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:19:37,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-19 00:19:37,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:19:37,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826363094] [2024-11-19 00:19:37,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826363094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:19:37,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:19:37,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 00:19:37,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574247742] [2024-11-19 00:19:37,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:19:37,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 00:19:37,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:19:37,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 00:19:37,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-19 00:19:37,555 INFO L87 Difference]: Start difference. First operand 178 states and 265 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26)