./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label38.c --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/eca-rers2012/Problem03_label38.c -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 d6ab095cb4c47e2e0ab83610e7dceb2c658ebc8f7a2b4be1c26690c64da4af60 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:41:34,961 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:41:35,052 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:41:35,058 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:41:35,060 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:41:35,086 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:41:35,087 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:41:35,087 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:41:35,088 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:41:35,090 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:41:35,090 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:41:35,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:41:35,091 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:41:35,092 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:41:35,095 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:41:35,096 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:41:35,096 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:41:35,096 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:41:35,096 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:41:35,096 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:41:35,097 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:41:35,098 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:41:35,098 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:41:35,098 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:41:35,099 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:41:35,099 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:41:35,099 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:41:35,100 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:41:35,100 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:41:35,100 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:41:35,101 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:41:35,101 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:41:35,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:41:35,102 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:41:35,103 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:41:35,103 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:41:35,103 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:41:35,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:41:35,104 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:41:35,104 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:41:35,104 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:41:35,105 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:41:35,105 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6ab095cb4c47e2e0ab83610e7dceb2c658ebc8f7a2b4be1c26690c64da4af60 [2024-11-18 09:41:35,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:41:35,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:41:35,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:41:35,388 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:41:35,388 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:41:35,390 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label38.c [2024-11-18 09:41:36,867 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:41:37,206 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:41:37,209 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label38.c [2024-11-18 09:41:37,233 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40ac48004/164a0ff3a8c14ecfa5e8e6e884e54f3a/FLAG74c887c88 [2024-11-18 09:41:37,444 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40ac48004/164a0ff3a8c14ecfa5e8e6e884e54f3a [2024-11-18 09:41:37,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:41:37,449 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:41:37,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:41:37,454 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:41:37,460 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:41:37,463 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:41:37" (1/1) ... [2024-11-18 09:41:37,464 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10b8cc97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:37, skipping insertion in model container [2024-11-18 09:41:37,464 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:41:37" (1/1) ... [2024-11-18 09:41:37,532 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:41:38,114 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/eca-rers2012/Problem03_label38.c[61364,61377] [2024-11-18 09:41:38,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:41:38,178 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:41:38,360 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/eca-rers2012/Problem03_label38.c[61364,61377] [2024-11-18 09:41:38,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:41:38,398 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:41:38,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:38 WrapperNode [2024-11-18 09:41:38,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:41:38,400 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:41:38,400 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:41:38,400 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:41:38,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:38" (1/1) ... [2024-11-18 09:41:38,455 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:38" (1/1) ... [2024-11-18 09:41:38,526 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-11-18 09:41:38,527 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:41:38,528 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:41:38,528 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:41:38,528 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:41:38,539 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:38" (1/1) ... [2024-11-18 09:41:38,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:38" (1/1) ... [2024-11-18 09:41:38,548 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:38" (1/1) ... [2024-11-18 09:41:38,600 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 09:41:38,600 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:38" (1/1) ... [2024-11-18 09:41:38,600 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:38" (1/1) ... [2024-11-18 09:41:38,645 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:38" (1/1) ... [2024-11-18 09:41:38,659 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:38" (1/1) ... [2024-11-18 09:41:38,674 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:38" (1/1) ... [2024-11-18 09:41:38,683 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:38" (1/1) ... [2024-11-18 09:41:38,698 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:41:38,700 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:41:38,700 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:41:38,700 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:41:38,701 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:38" (1/1) ... [2024-11-18 09:41:38,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:41:38,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:41:38,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 09:41:38,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 09:41:38,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:41:38,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:41:38,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:41:38,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:41:38,856 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:41:38,858 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:41:40,643 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-18 09:41:40,644 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:41:40,672 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:41:40,672 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 09:41:40,673 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:41:40 BoogieIcfgContainer [2024-11-18 09:41:40,673 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:41:40,675 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:41:40,675 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:41:40,678 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:41:40,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:41:37" (1/3) ... [2024-11-18 09:41:40,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399dbd50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:41:40, skipping insertion in model container [2024-11-18 09:41:40,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:41:38" (2/3) ... [2024-11-18 09:41:40,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399dbd50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:41:40, skipping insertion in model container [2024-11-18 09:41:40,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:41:40" (3/3) ... [2024-11-18 09:41:40,682 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label38.c [2024-11-18 09:41:40,699 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:41:40,699 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:41:40,777 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:41:40,785 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;@4ab1f0e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:41:40,786 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:41:40,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:40,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-18 09:41:40,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:40,815 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:40,817 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:40,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:40,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1825602715, now seen corresponding path program 1 times [2024-11-18 09:41:40,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:40,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496004112] [2024-11-18 09:41:40,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:40,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:41,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:41:41,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:41,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496004112] [2024-11-18 09:41:41,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496004112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:41,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:41,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:41:41,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151945640] [2024-11-18 09:41:41,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:41,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:41,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:41,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:41,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:41,812 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:42,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:42,892 INFO L93 Difference]: Finished difference Result 857 states and 1498 transitions. [2024-11-18 09:41:42,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:42,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2024-11-18 09:41:42,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:42,916 INFO L225 Difference]: With dead ends: 857 [2024-11-18 09:41:42,916 INFO L226 Difference]: Without dead ends: 462 [2024-11-18 09:41:42,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:42,926 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 87 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:42,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 187 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 09:41:42,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-11-18 09:41:42,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 460. [2024-11-18 09:41:43,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.5381263616557734) internal successors, (706), 459 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:43,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 706 transitions. [2024-11-18 09:41:43,006 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 706 transitions. Word has length 201 [2024-11-18 09:41:43,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:43,007 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 706 transitions. [2024-11-18 09:41:43,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:43,008 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 706 transitions. [2024-11-18 09:41:43,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-18 09:41:43,012 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:43,012 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:43,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:41:43,013 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:43,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:43,014 INFO L85 PathProgramCache]: Analyzing trace with hash -2093481508, now seen corresponding path program 1 times [2024-11-18 09:41:43,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:43,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236655565] [2024-11-18 09:41:43,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:43,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:43,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:41:43,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:43,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236655565] [2024-11-18 09:41:43,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236655565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:43,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:43,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:41:43,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809776322] [2024-11-18 09:41:43,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:43,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:43,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:43,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:43,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:43,329 INFO L87 Difference]: Start difference. First operand 460 states and 706 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:44,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:44,096 INFO L93 Difference]: Finished difference Result 1344 states and 2079 transitions. [2024-11-18 09:41:44,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:44,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2024-11-18 09:41:44,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:44,102 INFO L225 Difference]: With dead ends: 1344 [2024-11-18 09:41:44,102 INFO L226 Difference]: Without dead ends: 886 [2024-11-18 09:41:44,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:44,108 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:44,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 92 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 09:41:44,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-11-18 09:41:44,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 870. [2024-11-18 09:41:44,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 1.5120828538550057) internal successors, (1314), 869 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:44,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1314 transitions. [2024-11-18 09:41:44,154 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1314 transitions. Word has length 209 [2024-11-18 09:41:44,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:44,154 INFO L471 AbstractCegarLoop]: Abstraction has 870 states and 1314 transitions. [2024-11-18 09:41:44,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:44,155 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1314 transitions. [2024-11-18 09:41:44,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-18 09:41:44,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:44,161 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:44,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:41:44,162 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:44,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:44,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2019535467, now seen corresponding path program 1 times [2024-11-18 09:41:44,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:44,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152993796] [2024-11-18 09:41:44,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:44,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:44,606 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:41:44,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:44,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152993796] [2024-11-18 09:41:44,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152993796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:44,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:44,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:41:44,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121440062] [2024-11-18 09:41:44,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:44,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:44,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:44,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:44,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:44,612 INFO L87 Difference]: Start difference. First operand 870 states and 1314 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:45,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:45,413 INFO L93 Difference]: Finished difference Result 2554 states and 3869 transitions. [2024-11-18 09:41:45,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:45,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2024-11-18 09:41:45,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:45,420 INFO L225 Difference]: With dead ends: 2554 [2024-11-18 09:41:45,421 INFO L226 Difference]: Without dead ends: 1686 [2024-11-18 09:41:45,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:45,426 INFO L432 NwaCegarLoop]: 388 mSDtfsCounter, 232 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:45,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 417 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 09:41:45,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2024-11-18 09:41:45,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1684. [2024-11-18 09:41:45,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.3363042186571599) internal successors, (2249), 1683 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:45,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2249 transitions. [2024-11-18 09:41:45,472 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2249 transitions. Word has length 221 [2024-11-18 09:41:45,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:45,473 INFO L471 AbstractCegarLoop]: Abstraction has 1684 states and 2249 transitions. [2024-11-18 09:41:45,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:45,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2249 transitions. [2024-11-18 09:41:45,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-18 09:41:45,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:45,481 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:45,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 09:41:45,481 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:45,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:45,482 INFO L85 PathProgramCache]: Analyzing trace with hash 412048664, now seen corresponding path program 1 times [2024-11-18 09:41:45,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:45,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865984561] [2024-11-18 09:41:45,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:45,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:41:45,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:45,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865984561] [2024-11-18 09:41:45,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865984561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:45,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:45,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:41:45,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169002370] [2024-11-18 09:41:45,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:45,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:45,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:45,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:45,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:45,788 INFO L87 Difference]: Start difference. First operand 1684 states and 2249 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 2 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:46,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:46,578 INFO L93 Difference]: Finished difference Result 5003 states and 6686 transitions. [2024-11-18 09:41:46,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:46,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 2 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 224 [2024-11-18 09:41:46,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:46,591 INFO L225 Difference]: With dead ends: 5003 [2024-11-18 09:41:46,591 INFO L226 Difference]: Without dead ends: 3321 [2024-11-18 09:41:46,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:46,597 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 239 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:46,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 173 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 09:41:46,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3321 states. [2024-11-18 09:41:46,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3321 to 3320. [2024-11-18 09:41:46,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3320 states, 3319 states have (on average 1.284423018981621) internal successors, (4263), 3319 states have internal predecessors, (4263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:46,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3320 states to 3320 states and 4263 transitions. [2024-11-18 09:41:46,663 INFO L78 Accepts]: Start accepts. Automaton has 3320 states and 4263 transitions. Word has length 224 [2024-11-18 09:41:46,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:46,663 INFO L471 AbstractCegarLoop]: Abstraction has 3320 states and 4263 transitions. [2024-11-18 09:41:46,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 2 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:46,664 INFO L276 IsEmpty]: Start isEmpty. Operand 3320 states and 4263 transitions. [2024-11-18 09:41:46,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-18 09:41:46,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:46,671 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:46,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 09:41:46,671 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:46,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:46,672 INFO L85 PathProgramCache]: Analyzing trace with hash -960540435, now seen corresponding path program 1 times [2024-11-18 09:41:46,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:46,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524523262] [2024-11-18 09:41:46,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:46,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:47,038 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:41:47,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:47,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524523262] [2024-11-18 09:41:47,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524523262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:47,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:47,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:41:47,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091087576] [2024-11-18 09:41:47,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:47,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:47,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:47,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:47,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:47,040 INFO L87 Difference]: Start difference. First operand 3320 states and 4263 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:47,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:47,924 INFO L93 Difference]: Finished difference Result 9900 states and 12714 transitions. [2024-11-18 09:41:47,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:47,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 236 [2024-11-18 09:41:47,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:47,950 INFO L225 Difference]: With dead ends: 9900 [2024-11-18 09:41:47,950 INFO L226 Difference]: Without dead ends: 6582 [2024-11-18 09:41:47,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:47,959 INFO L432 NwaCegarLoop]: 395 mSDtfsCounter, 202 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:47,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 418 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 09:41:47,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6582 states. [2024-11-18 09:41:48,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6582 to 6577. [2024-11-18 09:41:48,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6577 states, 6576 states have (on average 1.224300486618005) internal successors, (8051), 6576 states have internal predecessors, (8051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:48,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6577 states to 6577 states and 8051 transitions. [2024-11-18 09:41:48,159 INFO L78 Accepts]: Start accepts. Automaton has 6577 states and 8051 transitions. Word has length 236 [2024-11-18 09:41:48,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:48,161 INFO L471 AbstractCegarLoop]: Abstraction has 6577 states and 8051 transitions. [2024-11-18 09:41:48,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:48,161 INFO L276 IsEmpty]: Start isEmpty. Operand 6577 states and 8051 transitions. [2024-11-18 09:41:48,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-18 09:41:48,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:48,175 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:48,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 09:41:48,176 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:48,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:48,176 INFO L85 PathProgramCache]: Analyzing trace with hash -2058320660, now seen corresponding path program 1 times [2024-11-18 09:41:48,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:48,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768243147] [2024-11-18 09:41:48,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:48,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:48,556 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:41:48,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:48,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768243147] [2024-11-18 09:41:48,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768243147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:48,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:48,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:41:48,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185837608] [2024-11-18 09:41:48,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:48,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:48,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:48,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:48,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:48,560 INFO L87 Difference]: Start difference. First operand 6577 states and 8051 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:49,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:49,445 INFO L93 Difference]: Finished difference Result 16215 states and 19820 transitions. [2024-11-18 09:41:49,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:49,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2024-11-18 09:41:49,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:49,478 INFO L225 Difference]: With dead ends: 16215 [2024-11-18 09:41:49,479 INFO L226 Difference]: Without dead ends: 9640 [2024-11-18 09:41:49,489 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:49,490 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 203 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:49,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 155 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 09:41:49,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9640 states. [2024-11-18 09:41:49,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9640 to 9638. [2024-11-18 09:41:49,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9638 states, 9637 states have (on average 1.2035903289405416) internal successors, (11599), 9637 states have internal predecessors, (11599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:49,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9638 states to 9638 states and 11599 transitions. [2024-11-18 09:41:49,675 INFO L78 Accepts]: Start accepts. Automaton has 9638 states and 11599 transitions. Word has length 242 [2024-11-18 09:41:49,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:49,675 INFO L471 AbstractCegarLoop]: Abstraction has 9638 states and 11599 transitions. [2024-11-18 09:41:49,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:49,675 INFO L276 IsEmpty]: Start isEmpty. Operand 9638 states and 11599 transitions. [2024-11-18 09:41:49,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-18 09:41:49,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:49,696 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:49,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 09:41:49,696 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:49,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:49,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1774165289, now seen corresponding path program 1 times [2024-11-18 09:41:49,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:49,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912971420] [2024-11-18 09:41:49,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:49,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:50,316 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:41:50,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:50,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912971420] [2024-11-18 09:41:50,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912971420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:41:50,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552541696] [2024-11-18 09:41:50,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:50,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:41:50,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:41:50,319 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:41:50,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 09:41:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:50,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:41:50,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:41:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:41:50,833 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:41:50,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552541696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:50,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:41:50,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 09:41:50,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164688432] [2024-11-18 09:41:50,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:50,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:50,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:50,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:50,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:41:50,836 INFO L87 Difference]: Start difference. First operand 9638 states and 11599 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:51,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:51,679 INFO L93 Difference]: Finished difference Result 23353 states and 28430 transitions. [2024-11-18 09:41:51,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:51,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2024-11-18 09:41:51,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:51,718 INFO L225 Difference]: With dead ends: 23353 [2024-11-18 09:41:51,719 INFO L226 Difference]: Without dead ends: 13717 [2024-11-18 09:41:51,735 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:41:51,736 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 51 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:51,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 400 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 09:41:51,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13717 states. [2024-11-18 09:41:51,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13717 to 13708. [2024-11-18 09:41:51,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13708 states, 13707 states have (on average 1.2034726781936238) internal successors, (16496), 13707 states have internal predecessors, (16496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:51,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13708 states to 13708 states and 16496 transitions. [2024-11-18 09:41:51,937 INFO L78 Accepts]: Start accepts. Automaton has 13708 states and 16496 transitions. Word has length 249 [2024-11-18 09:41:51,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:51,937 INFO L471 AbstractCegarLoop]: Abstraction has 13708 states and 16496 transitions. [2024-11-18 09:41:51,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:51,938 INFO L276 IsEmpty]: Start isEmpty. Operand 13708 states and 16496 transitions. [2024-11-18 09:41:51,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-18 09:41:51,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:51,998 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:52,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 09:41:52,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:41:52,204 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:52,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:52,206 INFO L85 PathProgramCache]: Analyzing trace with hash -730829166, now seen corresponding path program 1 times [2024-11-18 09:41:52,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:52,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897860369] [2024-11-18 09:41:52,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:52,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:52,950 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 72 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 09:41:52,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:52,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897860369] [2024-11-18 09:41:52,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897860369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:41:52,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121395327] [2024-11-18 09:41:52,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:52,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:41:52,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:41:52,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:41:52,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 09:41:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:53,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:41:53,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:41:53,170 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:41:53,170 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:41:53,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121395327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:53,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:41:53,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 09:41:53,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496797157] [2024-11-18 09:41:53,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:53,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:53,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:53,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:53,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:41:53,173 INFO L87 Difference]: Start difference. First operand 13708 states and 16496 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:54,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:54,019 INFO L93 Difference]: Finished difference Result 32695 states and 39958 transitions. [2024-11-18 09:41:54,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:54,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 268 [2024-11-18 09:41:54,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:54,057 INFO L225 Difference]: With dead ends: 32695 [2024-11-18 09:41:54,057 INFO L226 Difference]: Without dead ends: 18989 [2024-11-18 09:41:54,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:41:54,078 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 224 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:54,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 171 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 09:41:54,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18989 states. [2024-11-18 09:41:54,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18989 to 18986. [2024-11-18 09:41:54,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18986 states, 18985 states have (on average 1.1756649986831709) internal successors, (22320), 18985 states have internal predecessors, (22320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:54,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18986 states to 18986 states and 22320 transitions. [2024-11-18 09:41:54,411 INFO L78 Accepts]: Start accepts. Automaton has 18986 states and 22320 transitions. Word has length 268 [2024-11-18 09:41:54,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:54,411 INFO L471 AbstractCegarLoop]: Abstraction has 18986 states and 22320 transitions. [2024-11-18 09:41:54,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:54,411 INFO L276 IsEmpty]: Start isEmpty. Operand 18986 states and 22320 transitions. [2024-11-18 09:41:54,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-18 09:41:54,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:54,442 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:54,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 09:41:54,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-18 09:41:54,646 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:54,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:54,651 INFO L85 PathProgramCache]: Analyzing trace with hash 195659315, now seen corresponding path program 1 times [2024-11-18 09:41:54,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:54,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427328985] [2024-11-18 09:41:54,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:54,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:55,243 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 71 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 09:41:55,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:55,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427328985] [2024-11-18 09:41:55,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427328985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:41:55,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483524388] [2024-11-18 09:41:55,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:55,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:41:55,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:41:55,245 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:41:55,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 09:41:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:55,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:41:55,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:41:55,457 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:41:55,458 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:41:55,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483524388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:55,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:41:55,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 09:41:55,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656567884] [2024-11-18 09:41:55,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:55,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:55,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:55,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:55,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:41:55,460 INFO L87 Difference]: Start difference. First operand 18986 states and 22320 transitions. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:56,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:56,121 INFO L93 Difference]: Finished difference Result 37973 states and 44643 transitions. [2024-11-18 09:41:56,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:56,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 269 [2024-11-18 09:41:56,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:56,153 INFO L225 Difference]: With dead ends: 37973 [2024-11-18 09:41:56,154 INFO L226 Difference]: Without dead ends: 18989 [2024-11-18 09:41:56,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:41:56,180 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 260 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:56,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 96 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:41:56,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18989 states. [2024-11-18 09:41:56,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18989 to 18986. [2024-11-18 09:41:56,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18986 states, 18985 states have (on average 1.1678166973926785) internal successors, (22171), 18985 states have internal predecessors, (22171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:56,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18986 states to 18986 states and 22171 transitions. [2024-11-18 09:41:56,499 INFO L78 Accepts]: Start accepts. Automaton has 18986 states and 22171 transitions. Word has length 269 [2024-11-18 09:41:56,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:56,500 INFO L471 AbstractCegarLoop]: Abstraction has 18986 states and 22171 transitions. [2024-11-18 09:41:56,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:56,500 INFO L276 IsEmpty]: Start isEmpty. Operand 18986 states and 22171 transitions. [2024-11-18 09:41:56,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2024-11-18 09:41:56,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:56,532 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:56,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 09:41:56,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:41:56,734 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:56,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:56,735 INFO L85 PathProgramCache]: Analyzing trace with hash -181423019, now seen corresponding path program 1 times [2024-11-18 09:41:56,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:56,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545437612] [2024-11-18 09:41:56,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:56,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:57,061 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 09:41:57,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:57,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545437612] [2024-11-18 09:41:57,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545437612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:57,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:57,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:41:57,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752952971] [2024-11-18 09:41:57,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:57,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:57,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:57,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:57,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:57,065 INFO L87 Difference]: Start difference. First operand 18986 states and 22171 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:57,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:57,851 INFO L93 Difference]: Finished difference Result 45920 states and 53946 transitions. [2024-11-18 09:41:57,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:57,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 283 [2024-11-18 09:41:57,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:57,891 INFO L225 Difference]: With dead ends: 45920 [2024-11-18 09:41:57,891 INFO L226 Difference]: Without dead ends: 26936 [2024-11-18 09:41:57,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:57,912 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 167 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:57,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 223 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:41:57,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26936 states. [2024-11-18 09:41:58,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26936 to 25285. [2024-11-18 09:41:58,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25285 states, 25284 states have (on average 1.1812608764436008) internal successors, (29867), 25284 states have internal predecessors, (29867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:58,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25285 states to 25285 states and 29867 transitions. [2024-11-18 09:41:58,338 INFO L78 Accepts]: Start accepts. Automaton has 25285 states and 29867 transitions. Word has length 283 [2024-11-18 09:41:58,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:58,338 INFO L471 AbstractCegarLoop]: Abstraction has 25285 states and 29867 transitions. [2024-11-18 09:41:58,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:58,339 INFO L276 IsEmpty]: Start isEmpty. Operand 25285 states and 29867 transitions. [2024-11-18 09:41:58,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-11-18 09:41:58,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:58,363 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:58,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 09:41:58,363 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:58,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:58,364 INFO L85 PathProgramCache]: Analyzing trace with hash 520076953, now seen corresponding path program 1 times [2024-11-18 09:41:58,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:58,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843097593] [2024-11-18 09:41:58,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:58,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:58,648 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:41:58,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:58,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843097593] [2024-11-18 09:41:58,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843097593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:58,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:41:58,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:41:58,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708526115] [2024-11-18 09:41:58,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:58,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:58,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:58,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:58,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:58,651 INFO L87 Difference]: Start difference. First operand 25285 states and 29867 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:59,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:59,374 INFO L93 Difference]: Finished difference Result 50165 states and 59288 transitions. [2024-11-18 09:41:59,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:59,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 288 [2024-11-18 09:41:59,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:59,404 INFO L225 Difference]: With dead ends: 50165 [2024-11-18 09:41:59,404 INFO L226 Difference]: Without dead ends: 24882 [2024-11-18 09:41:59,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:41:59,423 INFO L432 NwaCegarLoop]: 321 mSDtfsCounter, 262 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:59,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 342 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:41:59,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24882 states. [2024-11-18 09:41:59,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24882 to 24676. [2024-11-18 09:41:59,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24676 states, 24675 states have (on average 1.1733333333333333) internal successors, (28952), 24675 states have internal predecessors, (28952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:59,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24676 states to 24676 states and 28952 transitions. [2024-11-18 09:41:59,836 INFO L78 Accepts]: Start accepts. Automaton has 24676 states and 28952 transitions. Word has length 288 [2024-11-18 09:41:59,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:41:59,836 INFO L471 AbstractCegarLoop]: Abstraction has 24676 states and 28952 transitions. [2024-11-18 09:41:59,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:41:59,837 INFO L276 IsEmpty]: Start isEmpty. Operand 24676 states and 28952 transitions. [2024-11-18 09:41:59,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-18 09:41:59,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:41:59,858 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:41:59,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 09:41:59,858 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:41:59,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:41:59,859 INFO L85 PathProgramCache]: Analyzing trace with hash -643575756, now seen corresponding path program 1 times [2024-11-18 09:41:59,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:41:59,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434308569] [2024-11-18 09:41:59,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:59,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:41:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:42:00,477 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 109 proven. 6 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-18 09:42:00,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:42:00,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434308569] [2024-11-18 09:42:00,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434308569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:42:00,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913659076] [2024-11-18 09:42:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:42:00,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:42:00,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:42:00,481 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:42:00,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 09:42:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:42:00,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:42:00,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:42:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-18 09:42:00,725 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:42:00,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913659076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:42:00,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:42:00,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 09:42:00,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493263907] [2024-11-18 09:42:00,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:42:00,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:42:00,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:42:00,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:42:00,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:42:00,729 INFO L87 Difference]: Start difference. First operand 24676 states and 28952 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:01,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:42:01,541 INFO L93 Difference]: Finished difference Result 48159 states and 56497 transitions. [2024-11-18 09:42:01,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:42:01,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 295 [2024-11-18 09:42:01,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:42:01,580 INFO L225 Difference]: With dead ends: 48159 [2024-11-18 09:42:01,580 INFO L226 Difference]: Without dead ends: 23485 [2024-11-18 09:42:01,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:42:01,602 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 214 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 09:42:01,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 395 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 09:42:01,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23485 states. [2024-11-18 09:42:01,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23485 to 23458. [2024-11-18 09:42:01,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23458 states, 23457 states have (on average 1.165579571130153) internal successors, (27341), 23457 states have internal predecessors, (27341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:02,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23458 states to 23458 states and 27341 transitions. [2024-11-18 09:42:02,026 INFO L78 Accepts]: Start accepts. Automaton has 23458 states and 27341 transitions. Word has length 295 [2024-11-18 09:42:02,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:42:02,027 INFO L471 AbstractCegarLoop]: Abstraction has 23458 states and 27341 transitions. [2024-11-18 09:42:02,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:02,028 INFO L276 IsEmpty]: Start isEmpty. Operand 23458 states and 27341 transitions. [2024-11-18 09:42:02,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-18 09:42:02,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:42:02,058 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:42:02,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 09:42:02,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:42:02,263 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:42:02,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:42:02,264 INFO L85 PathProgramCache]: Analyzing trace with hash 301867287, now seen corresponding path program 1 times [2024-11-18 09:42:02,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:42:02,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450024113] [2024-11-18 09:42:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:42:02,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:42:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:42:02,534 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:42:02,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:42:02,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450024113] [2024-11-18 09:42:02,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450024113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:42:02,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:42:02,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:42:02,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878176426] [2024-11-18 09:42:02,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:42:02,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:42:02,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:42:02,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:42:02,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:42:02,539 INFO L87 Difference]: Start difference. First operand 23458 states and 27341 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:03,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:42:03,330 INFO L93 Difference]: Finished difference Result 45271 states and 52620 transitions. [2024-11-18 09:42:03,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:42:03,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 300 [2024-11-18 09:42:03,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:42:03,366 INFO L225 Difference]: With dead ends: 45271 [2024-11-18 09:42:03,366 INFO L226 Difference]: Without dead ends: 21815 [2024-11-18 09:42:03,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:42:03,388 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 266 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:42:03,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 371 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:42:03,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21815 states. [2024-11-18 09:42:03,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21815 to 21814. [2024-11-18 09:42:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21814 states, 21813 states have (on average 1.1297849906019346) internal successors, (24644), 21813 states have internal predecessors, (24644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:03,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21814 states to 21814 states and 24644 transitions. [2024-11-18 09:42:03,815 INFO L78 Accepts]: Start accepts. Automaton has 21814 states and 24644 transitions. Word has length 300 [2024-11-18 09:42:03,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:42:03,815 INFO L471 AbstractCegarLoop]: Abstraction has 21814 states and 24644 transitions. [2024-11-18 09:42:03,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:03,815 INFO L276 IsEmpty]: Start isEmpty. Operand 21814 states and 24644 transitions. [2024-11-18 09:42:03,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-18 09:42:03,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:42:03,837 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:42:03,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 09:42:03,837 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:42:03,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:42:03,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1146021023, now seen corresponding path program 1 times [2024-11-18 09:42:03,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:42:03,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593567155] [2024-11-18 09:42:03,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:42:03,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:42:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:42:04,037 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:42:04,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:42:04,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593567155] [2024-11-18 09:42:04,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593567155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:42:04,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:42:04,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:42:04,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612288807] [2024-11-18 09:42:04,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:42:04,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:42:04,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:42:04,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:42:04,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:42:04,040 INFO L87 Difference]: Start difference. First operand 21814 states and 24644 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:04,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:42:04,759 INFO L93 Difference]: Finished difference Result 43421 states and 49045 transitions. [2024-11-18 09:42:04,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:42:04,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 304 [2024-11-18 09:42:04,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:42:04,779 INFO L225 Difference]: With dead ends: 43421 [2024-11-18 09:42:04,779 INFO L226 Difference]: Without dead ends: 21609 [2024-11-18 09:42:04,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:42:04,786 INFO L432 NwaCegarLoop]: 343 mSDtfsCounter, 254 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 09:42:04,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 368 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 09:42:04,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21609 states. [2024-11-18 09:42:04,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21609 to 18358. [2024-11-18 09:42:04,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18358 states, 18357 states have (on average 1.1111837446205808) internal successors, (20398), 18357 states have internal predecessors, (20398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:04,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18358 states to 18358 states and 20398 transitions. [2024-11-18 09:42:04,929 INFO L78 Accepts]: Start accepts. Automaton has 18358 states and 20398 transitions. Word has length 304 [2024-11-18 09:42:04,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:42:04,930 INFO L471 AbstractCegarLoop]: Abstraction has 18358 states and 20398 transitions. [2024-11-18 09:42:04,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:04,930 INFO L276 IsEmpty]: Start isEmpty. Operand 18358 states and 20398 transitions. [2024-11-18 09:42:04,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-18 09:42:04,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:42:04,942 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:42:04,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 09:42:04,942 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:42:04,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:42:04,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1313975761, now seen corresponding path program 1 times [2024-11-18 09:42:04,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:42:04,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966263047] [2024-11-18 09:42:04,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:42:04,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:42:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:42:05,124 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 09:42:05,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:42:05,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966263047] [2024-11-18 09:42:05,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966263047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:42:05,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:42:05,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:42:05,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873919414] [2024-11-18 09:42:05,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:42:05,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:42:05,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:42:05,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:42:05,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:42:05,127 INFO L87 Difference]: Start difference. First operand 18358 states and 20398 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:05,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:42:05,389 INFO L93 Difference]: Finished difference Result 52814 states and 58724 transitions. [2024-11-18 09:42:05,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:42:05,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2024-11-18 09:42:05,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:42:05,422 INFO L225 Difference]: With dead ends: 52814 [2024-11-18 09:42:05,422 INFO L226 Difference]: Without dead ends: 34458 [2024-11-18 09:42:05,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:42:05,438 INFO L432 NwaCegarLoop]: 682 mSDtfsCounter, 330 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:42:05,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 977 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:42:05,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34458 states. [2024-11-18 09:42:05,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34458 to 34455. [2024-11-18 09:42:05,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34455 states, 34454 states have (on average 1.10204910895687) internal successors, (37970), 34454 states have internal predecessors, (37970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:05,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34455 states to 34455 states and 37970 transitions. [2024-11-18 09:42:05,802 INFO L78 Accepts]: Start accepts. Automaton has 34455 states and 37970 transitions. Word has length 310 [2024-11-18 09:42:05,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:42:05,802 INFO L471 AbstractCegarLoop]: Abstraction has 34455 states and 37970 transitions. [2024-11-18 09:42:05,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:05,803 INFO L276 IsEmpty]: Start isEmpty. Operand 34455 states and 37970 transitions. [2024-11-18 09:42:05,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2024-11-18 09:42:05,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:42:05,834 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:42:05,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 09:42:05,834 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:42:05,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:42:05,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1000248581, now seen corresponding path program 1 times [2024-11-18 09:42:05,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:42:05,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18817232] [2024-11-18 09:42:05,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:42:05,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:42:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:42:06,216 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 09:42:06,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:42:06,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18817232] [2024-11-18 09:42:06,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18817232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:42:06,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:42:06,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:42:06,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682537808] [2024-11-18 09:42:06,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:42:06,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:42:06,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:42:06,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:42:06,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:42:06,219 INFO L87 Difference]: Start difference. First operand 34455 states and 37970 transitions. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:07,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:42:07,380 INFO L93 Difference]: Finished difference Result 74033 states and 81584 transitions. [2024-11-18 09:42:07,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:42:07,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 326 [2024-11-18 09:42:07,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:42:07,431 INFO L225 Difference]: With dead ends: 74033 [2024-11-18 09:42:07,431 INFO L226 Difference]: Without dead ends: 39580 [2024-11-18 09:42:07,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:42:07,461 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 358 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 09:42:07,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 172 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 09:42:07,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39580 states. [2024-11-18 09:42:07,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39580 to 37119. [2024-11-18 09:42:07,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37119 states, 37118 states have (on average 1.102834204429118) internal successors, (40935), 37118 states have internal predecessors, (40935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:07,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37119 states to 37119 states and 40935 transitions. [2024-11-18 09:42:07,939 INFO L78 Accepts]: Start accepts. Automaton has 37119 states and 40935 transitions. Word has length 326 [2024-11-18 09:42:07,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:42:07,940 INFO L471 AbstractCegarLoop]: Abstraction has 37119 states and 40935 transitions. [2024-11-18 09:42:07,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:07,940 INFO L276 IsEmpty]: Start isEmpty. Operand 37119 states and 40935 transitions. [2024-11-18 09:42:07,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-18 09:42:07,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:42:07,986 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:42:07,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 09:42:07,987 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:42:07,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:42:07,987 INFO L85 PathProgramCache]: Analyzing trace with hash -902637589, now seen corresponding path program 1 times [2024-11-18 09:42:07,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:42:07,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517487160] [2024-11-18 09:42:07,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:42:07,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:42:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:42:08,510 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 146 proven. 6 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-18 09:42:08,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:42:08,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517487160] [2024-11-18 09:42:08,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517487160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:42:08,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061216347] [2024-11-18 09:42:08,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:42:08,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:42:08,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:42:08,514 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:42:08,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 09:42:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:42:08,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:42:08,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:42:08,832 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-18 09:42:08,833 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:42:08,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061216347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:42:08,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:42:08,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-18 09:42:08,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870755073] [2024-11-18 09:42:08,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:42:08,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:42:08,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:42:08,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:42:08,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:42:08,836 INFO L87 Difference]: Start difference. First operand 37119 states and 40935 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:09,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:42:09,317 INFO L93 Difference]: Finished difference Result 66639 states and 73491 transitions. [2024-11-18 09:42:09,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:42:09,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 329 [2024-11-18 09:42:09,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:42:09,349 INFO L225 Difference]: With dead ends: 66639 [2024-11-18 09:42:09,349 INFO L226 Difference]: Without dead ends: 29522 [2024-11-18 09:42:09,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:42:09,374 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 308 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:42:09,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 31 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 09:42:09,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29522 states. [2024-11-18 09:42:09,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29522 to 29522. [2024-11-18 09:42:09,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29522 states, 29521 states have (on average 1.0948816097015683) internal successors, (32322), 29521 states have internal predecessors, (32322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:09,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29522 states to 29522 states and 32322 transitions. [2024-11-18 09:42:09,747 INFO L78 Accepts]: Start accepts. Automaton has 29522 states and 32322 transitions. Word has length 329 [2024-11-18 09:42:09,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:42:09,747 INFO L471 AbstractCegarLoop]: Abstraction has 29522 states and 32322 transitions. [2024-11-18 09:42:09,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:09,748 INFO L276 IsEmpty]: Start isEmpty. Operand 29522 states and 32322 transitions. [2024-11-18 09:42:09,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2024-11-18 09:42:09,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:42:09,772 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:42:09,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 09:42:09,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 09:42:09,973 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:42:09,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:42:09,974 INFO L85 PathProgramCache]: Analyzing trace with hash 2101811160, now seen corresponding path program 1 times [2024-11-18 09:42:09,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:42:09,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875641268] [2024-11-18 09:42:09,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:42:09,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:42:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:42:10,414 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 09:42:10,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:42:10,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875641268] [2024-11-18 09:42:10,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875641268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:42:10,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:42:10,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:42:10,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730167503] [2024-11-18 09:42:10,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:42:10,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:42:10,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:42:10,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:42:10,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:42:10,417 INFO L87 Difference]: Start difference. First operand 29522 states and 32322 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:11,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:42:11,128 INFO L93 Difference]: Finished difference Result 65963 states and 72298 transitions. [2024-11-18 09:42:11,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:42:11,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2024-11-18 09:42:11,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:42:11,161 INFO L225 Difference]: With dead ends: 65963 [2024-11-18 09:42:11,161 INFO L226 Difference]: Without dead ends: 34007 [2024-11-18 09:42:11,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:42:11,183 INFO L432 NwaCegarLoop]: 341 mSDtfsCounter, 186 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:42:11,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 355 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:42:11,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34007 states. [2024-11-18 09:42:11,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34007 to 31343. [2024-11-18 09:42:11,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31343 states, 31342 states have (on average 1.065375534426648) internal successors, (33391), 31342 states have internal predecessors, (33391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:11,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31343 states to 31343 states and 33391 transitions. [2024-11-18 09:42:11,608 INFO L78 Accepts]: Start accepts. Automaton has 31343 states and 33391 transitions. Word has length 338 [2024-11-18 09:42:11,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:42:11,608 INFO L471 AbstractCegarLoop]: Abstraction has 31343 states and 33391 transitions. [2024-11-18 09:42:11,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:11,608 INFO L276 IsEmpty]: Start isEmpty. Operand 31343 states and 33391 transitions. [2024-11-18 09:42:11,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2024-11-18 09:42:11,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:42:11,632 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:42:11,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 09:42:11,633 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:42:11,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:42:11,633 INFO L85 PathProgramCache]: Analyzing trace with hash -84122702, now seen corresponding path program 1 times [2024-11-18 09:42:11,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:42:11,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866322433] [2024-11-18 09:42:11,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:42:11,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:42:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:42:12,226 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 183 proven. 6 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-18 09:42:12,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:42:12,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866322433] [2024-11-18 09:42:12,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866322433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:42:12,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748050356] [2024-11-18 09:42:12,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:42:12,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:42:12,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:42:12,229 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:42:12,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 09:42:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:42:12,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:42:12,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:42:12,681 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-18 09:42:12,682 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:42:12,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748050356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:42:12,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:42:12,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 09:42:12,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529719287] [2024-11-18 09:42:12,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:42:12,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:42:12,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:42:12,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:42:12,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:42:12,683 INFO L87 Difference]: Start difference. First operand 31343 states and 33391 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:13,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:42:13,269 INFO L93 Difference]: Finished difference Result 64929 states and 69120 transitions. [2024-11-18 09:42:13,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:42:13,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 376 [2024-11-18 09:42:13,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:42:13,272 INFO L225 Difference]: With dead ends: 64929 [2024-11-18 09:42:13,272 INFO L226 Difference]: Without dead ends: 0 [2024-11-18 09:42:13,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:42:13,292 INFO L432 NwaCegarLoop]: 321 mSDtfsCounter, 29 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 09:42:13,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 345 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 09:42:13,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-18 09:42:13,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-18 09:42:13,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:13,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-18 09:42:13,293 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 376 [2024-11-18 09:42:13,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:42:13,294 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-18 09:42:13,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:42:13,294 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-18 09:42:13,294 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-18 09:42:13,297 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 09:42:13,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 09:42:13,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:42:13,501 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:42:13,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-18 09:42:16,251 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 09:42:16,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:42:16 BoogieIcfgContainer [2024-11-18 09:42:16,296 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 09:42:16,296 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 09:42:16,296 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 09:42:16,296 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 09:42:16,297 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:41:40" (3/4) ... [2024-11-18 09:42:16,300 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-18 09:42:16,332 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-18 09:42:16,334 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-18 09:42:16,336 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-18 09:42:16,338 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-18 09:42:16,558 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 09:42:16,559 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-18 09:42:16,559 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 09:42:16,560 INFO L158 Benchmark]: Toolchain (without parser) took 39110.22ms. Allocated memory was 176.2MB in the beginning and 3.2GB in the end (delta: 3.0GB). Free memory was 115.8MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 538.2MB. Max. memory is 16.1GB. [2024-11-18 09:42:16,561 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 176.2MB. Free memory is still 136.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 09:42:16,561 INFO L158 Benchmark]: CACSL2BoogieTranslator took 947.47ms. Allocated memory is still 176.2MB. Free memory was 115.4MB in the beginning and 107.8MB in the end (delta: 7.6MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2024-11-18 09:42:16,561 INFO L158 Benchmark]: Boogie Procedure Inliner took 127.14ms. Allocated memory is still 176.2MB. Free memory was 107.5MB in the beginning and 91.9MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-18 09:42:16,561 INFO L158 Benchmark]: Boogie Preprocessor took 171.21ms. Allocated memory is still 176.2MB. Free memory was 91.9MB in the beginning and 79.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 09:42:16,562 INFO L158 Benchmark]: RCFGBuilder took 1973.36ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 79.3MB in the beginning and 141.7MB in the end (delta: -62.3MB). Peak memory consumption was 100.1MB. Max. memory is 16.1GB. [2024-11-18 09:42:16,565 INFO L158 Benchmark]: TraceAbstraction took 35620.68ms. Allocated memory was 260.0MB in the beginning and 3.2GB in the end (delta: 2.9GB). Free memory was 140.6MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 808.1MB. Max. memory is 16.1GB. [2024-11-18 09:42:16,565 INFO L158 Benchmark]: Witness Printer took 262.65ms. Allocated memory is still 3.2GB. Free memory was 2.6GB in the beginning and 2.6GB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-18 09:42:16,566 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 176.2MB. Free memory is still 136.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 947.47ms. Allocated memory is still 176.2MB. Free memory was 115.4MB in the beginning and 107.8MB in the end (delta: 7.6MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 127.14ms. Allocated memory is still 176.2MB. Free memory was 107.5MB in the beginning and 91.9MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 171.21ms. Allocated memory is still 176.2MB. Free memory was 91.9MB in the beginning and 79.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 1973.36ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 79.3MB in the beginning and 141.7MB in the end (delta: -62.3MB). Peak memory consumption was 100.1MB. Max. memory is 16.1GB. * TraceAbstraction took 35620.68ms. Allocated memory was 260.0MB in the beginning and 3.2GB in the end (delta: 2.9GB). Free memory was 140.6MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 808.1MB. Max. memory is 16.1GB. * Witness Printer took 262.65ms. Allocated memory is still 3.2GB. Free memory was 2.6GB in the beginning and 2.6GB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1648]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 302 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 32.7s, OverallIterations: 19, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 15.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4119 SdHoareTripleChecker+Valid, 12.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4119 mSDsluCounter, 5688 SdHoareTripleChecker+Invalid, 10.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 728 mSDsCounter, 2064 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11148 IncrementalHoareTripleChecker+Invalid, 13212 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2064 mSolverCounterUnsat, 4960 mSDtfsCounter, 11148 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1832 GetRequests, 1800 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37119occurred in iteration=16, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.9s AutomataMinimizationTime, 19 MinimizatonAttempts, 10307 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 7054 NumberOfCodeBlocks, 7054 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 7029 ConstructedInterpolants, 0 QuantifiedInterpolants, 11628 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3392 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 25 InterpolantComputations, 19 PerfectInterpolantSequences, 3310/3346 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1668]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((2 == a3) && (a5 == 1)) && (a26 <= 0)) && (a11 == 1)) && (a27 <= 0)) && (a6 <= 0)) || ((((((a5 == 1) && (a12 == 1)) && (a3 == 1)) && (a6 == 1)) && (a11 <= 0)) && (a27 <= 0))) || ((((((a26 == 1) && (a5 == 1)) && (a3 == 1)) && (a11 <= 0)) && (a27 == 1)) && (a6 <= 0))) || ((((((a26 == 1) && (a5 == 1)) && (a11 == 1)) && (a3 == 1)) && (a27 <= 0)) && (a6 <= 0))) || (((((2 == a3) && (a5 == 1)) && (a11 <= 0)) && (a27 == 1)) && (a6 <= 0))) || (((((a5 == 1) && (a11 == 1)) && (a6 == 1)) && (a27 == 1)) && (a3 == 0))) || (((((2 == a3) && (a5 == 1)) && (a11 == 1)) && (a6 == 1)) && (a27 == 1))) || ((((((a26 == 1) && (a5 == 1)) && (a11 == 1)) && (a3 == 1)) && (a6 == 1)) && (a27 <= 0))) || (((((2 == a3) && (a5 == 1)) && (a6 == 1)) && (a11 <= 0)) && (a27 == 1))) || (((((a5 == 1) && (a6 == 1)) && (a11 <= 0)) && (a27 == 1)) && (a3 == 0))) || ((((((a5 == 1) && (a26 <= 0)) && (a3 == 1)) && (a11 <= 0)) && (a27 <= 0)) && (a6 <= 0))) || (((((a5 == 1) && (a11 == 1)) && (a3 == 1)) && (a27 == 1)) && (a6 <= 0))) || (((((((a5 == 1) && (a12 == 1)) && (a26 <= 0)) && (a6 == 1)) && (a11 <= 0)) && (a3 == 0)) && (a27 <= 0))) || (((((a5 == 1) && (a11 <= 0)) && (a27 == 1)) && (a3 == 0)) && (a6 <= 0))) || (((((((a26 == 1) && (2 == a3)) && (a5 == 1)) && (a12 == 1)) && (a11 <= 0)) && (a27 <= 0)) && (a6 <= 0))) || ((((((2 == a3) && (a5 == 1)) && (a26 <= 0)) && (a6 == 1)) && (a11 <= 0)) && (a27 <= 0))) || ((((((a26 == 1) && (a5 == 1)) && (a3 == 1)) && (a11 <= 0)) && (a27 <= 0)) && (a6 <= 0))) || (((((a5 == 1) && (a3 == 1)) && (a6 == 1)) && (a11 <= 0)) && (a27 == 1))) || ((((((a26 == 1) && (a5 == 1)) && (a11 == 1)) && (a3 == 0)) && (a27 <= 0)) && (a6 <= 0))) || ((((((a26 == 1) && (2 == a3)) && (a5 == 1)) && (a11 == 1)) && (a27 == 1)) && (a6 <= 0))) || (((((((a5 == 1) && (a12 == 1)) && (a26 <= 0)) && (a11 <= 0)) && (a3 == 0)) && (a27 <= 0)) && (a6 <= 0))) || (((((((a26 == 1) && (2 == a3)) && (a5 == 1)) && (a12 == 1)) && (a11 == 1)) && (a27 <= 0)) && (a6 <= 0))) || (((((a5 == 1) && (a11 == 1)) && (a27 == 1)) && (a3 == 0)) && (a6 <= 0))) || ((((((a26 == 1) && (a5 == 1)) && (a11 == 1)) && (a6 == 1)) && (a3 == 0)) && (a27 <= 0))) || ((((((a26 == 1) && (2 == a3)) && (a5 == 1)) && (a6 == 1)) && (a11 <= 0)) && (a27 <= 0))) || ((((((a26 == 1) && (a5 == 1)) && (a3 == 1)) && (a6 == 1)) && (a11 <= 0)) && (a27 <= 0))) || (((((((a26 == 1) && (a5 == 1)) && (a12 == 1)) && (a11 <= 0)) && (a3 == 0)) && (a27 <= 0)) && (a6 <= 0))) || ((((((a26 == 1) && (a5 == 1)) && (a6 == 1)) && (a11 <= 0)) && (a3 == 0)) && (a27 <= 0))) || ((((((((a25 == 1) && (a5 == 1)) && (a12 == 1)) && (a26 <= 0)) && (a11 == 1)) && (a3 == 1)) && (a6 == 1)) && (a27 <= 0))) || ((((((a26 == 1) && (a5 == 1)) && (a11 == 1)) && (a3 == 1)) && (a6 == 1)) && (a27 == 1))) || ((((((a5 == 1) && (a26 <= 0)) && (a3 == 1)) && (a11 <= 0)) && (a27 == 1)) && (a6 <= 0))) || ((((((2 == a3) && (a5 == 1)) && (a26 <= 0)) && (a11 == 1)) && (a27 == 1)) && (a6 <= 0))) || ((((((a26 == 1) && (2 == a3)) && (a5 == 1)) && (a11 == 1)) && (a6 == 1)) && (a27 <= 0))) RESULT: Ultimate proved your program to be correct! [2024-11-18 09:42:16,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE