./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label08.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/Problem17_label08.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 9e8eccafd5332366d591fd0f563128386bcd6073a7941113bfddd094bb357fdc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 10:48:35,042 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 10:48:35,110 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 10:48:35,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 10:48:35,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 10:48:35,161 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 10:48:35,161 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 10:48:35,162 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 10:48:35,162 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 10:48:35,164 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 10:48:35,164 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 10:48:35,165 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 10:48:35,165 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 10:48:35,166 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 10:48:35,166 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 10:48:35,169 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 10:48:35,170 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 10:48:35,170 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 10:48:35,170 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 10:48:35,170 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 10:48:35,170 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 10:48:35,171 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 10:48:35,171 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 10:48:35,173 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 10:48:35,173 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 10:48:35,173 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 10:48:35,173 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 10:48:35,174 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 10:48:35,174 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 10:48:35,174 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 10:48:35,175 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 10:48:35,175 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 10:48:35,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:48:35,176 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 10:48:35,176 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 10:48:35,177 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 10:48:35,177 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 10:48:35,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 10:48:35,178 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 10:48:35,178 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 10:48:35,178 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 10:48:35,178 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 10:48:35,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e8eccafd5332366d591fd0f563128386bcd6073a7941113bfddd094bb357fdc [2024-11-18 10:48:35,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 10:48:35,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 10:48:35,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 10:48:35,433 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 10:48:35,433 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 10:48:35,435 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label08.c [2024-11-18 10:48:36,905 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 10:48:37,291 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 10:48:37,294 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label08.c [2024-11-18 10:48:37,321 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/631643b95/a62eeaae2b1544fbad8e35f546d6cb90/FLAG97947ecd3 [2024-11-18 10:48:37,480 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/631643b95/a62eeaae2b1544fbad8e35f546d6cb90 [2024-11-18 10:48:37,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 10:48:37,484 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 10:48:37,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 10:48:37,485 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 10:48:37,491 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 10:48:37,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:48:37" (1/1) ... [2024-11-18 10:48:37,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b453a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:48:37, skipping insertion in model container [2024-11-18 10:48:37,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:48:37" (1/1) ... [2024-11-18 10:48:37,575 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 10:48:37,859 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/Problem17_label08.c[8572,8585] [2024-11-18 10:48:38,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:48:38,486 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 10:48:38,520 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/Problem17_label08.c[8572,8585] [2024-11-18 10:48:38,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:48:38,777 INFO L204 MainTranslator]: Completed translation [2024-11-18 10:48:38,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:48:38 WrapperNode [2024-11-18 10:48:38,778 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 10:48:38,779 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 10:48:38,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 10:48:38,779 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 10:48:38,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:48:38" (1/1) ... [2024-11-18 10:48:38,843 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:48:38" (1/1) ... [2024-11-18 10:48:39,191 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-18 10:48:39,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 10:48:39,192 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 10:48:39,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 10:48:39,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 10:48:39,203 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:48:38" (1/1) ... [2024-11-18 10:48:39,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:48:38" (1/1) ... [2024-11-18 10:48:39,238 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:48:38" (1/1) ... [2024-11-18 10:48:39,453 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 10:48:39,453 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:48:38" (1/1) ... [2024-11-18 10:48:39,454 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:48:38" (1/1) ... [2024-11-18 10:48:39,578 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:48:38" (1/1) ... [2024-11-18 10:48:39,604 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:48:38" (1/1) ... [2024-11-18 10:48:39,632 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:48:38" (1/1) ... [2024-11-18 10:48:39,650 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:48:38" (1/1) ... [2024-11-18 10:48:39,685 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 10:48:39,687 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 10:48:39,688 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 10:48:39,688 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 10:48:39,689 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:48:38" (1/1) ... [2024-11-18 10:48:39,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:48:39,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:48:39,720 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 10:48:39,721 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 10:48:39,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 10:48:39,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 10:48:39,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 10:48:39,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 10:48:39,824 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 10:48:39,826 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 10:48:42,991 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-18 10:48:42,991 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 10:48:43,029 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 10:48:43,033 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 10:48:43,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:48:43 BoogieIcfgContainer [2024-11-18 10:48:43,035 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 10:48:43,037 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 10:48:43,037 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 10:48:43,040 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 10:48:43,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:48:37" (1/3) ... [2024-11-18 10:48:43,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b79e431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:48:43, skipping insertion in model container [2024-11-18 10:48:43,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:48:38" (2/3) ... [2024-11-18 10:48:43,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b79e431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:48:43, skipping insertion in model container [2024-11-18 10:48:43,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:48:43" (3/3) ... [2024-11-18 10:48:43,043 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label08.c [2024-11-18 10:48:43,059 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 10:48:43,059 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 10:48:43,151 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 10:48:43,157 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;@406eb2a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 10:48:43,157 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 10:48:43,163 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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 10:48:43,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-18 10:48:43,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:48:43,175 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] [2024-11-18 10:48:43,176 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:48:43,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:48:43,182 INFO L85 PathProgramCache]: Analyzing trace with hash -2074400678, now seen corresponding path program 1 times [2024-11-18 10:48:43,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:48:43,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476676797] [2024-11-18 10:48:43,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:48:43,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:48:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:48:43,592 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 10:48:43,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:48:43,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476676797] [2024-11-18 10:48:43,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476676797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:48:43,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:48:43,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:48:43,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788201692] [2024-11-18 10:48:43,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:48:43,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:48:43,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:48:43,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:48:43,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:48:43,637 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 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 10:48:46,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:48:46,059 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2024-11-18 10:48:46,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:48:46,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 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 58 [2024-11-18 10:48:46,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:48:46,080 INFO L225 Difference]: With dead ends: 1642 [2024-11-18 10:48:46,080 INFO L226 Difference]: Without dead ends: 975 [2024-11-18 10:48:46,086 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 10:48:46,093 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 432 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:48:46,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-18 10:48:46,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2024-11-18 10:48:46,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2024-11-18 10:48:46,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 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 10:48:46,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2024-11-18 10:48:46,185 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 58 [2024-11-18 10:48:46,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:48:46,185 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2024-11-18 10:48:46,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 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 10:48:46,186 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2024-11-18 10:48:46,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-18 10:48:46,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:48:46,196 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, 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] [2024-11-18 10:48:46,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 10:48:46,197 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:48:46,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:48:46,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1002261606, now seen corresponding path program 1 times [2024-11-18 10:48:46,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:48:46,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568244210] [2024-11-18 10:48:46,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:48:46,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:48:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:48:46,546 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:48:46,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:48:46,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568244210] [2024-11-18 10:48:46,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568244210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:48:46,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:48:46,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:48:46,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465139242] [2024-11-18 10:48:46,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:48:46,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:48:46,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:48:46,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:48:46,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:48:46,550 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 10:48:48,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:48:48,970 INFO L93 Difference]: Finished difference Result 2814 states and 4242 transitions. [2024-11-18 10:48:48,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:48:48,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 128 [2024-11-18 10:48:48,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:48:48,978 INFO L225 Difference]: With dead ends: 2814 [2024-11-18 10:48:48,979 INFO L226 Difference]: Without dead ends: 1844 [2024-11-18 10:48:48,983 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 10:48:48,984 INFO L432 NwaCegarLoop]: 853 mSDtfsCounter, 433 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:48:48,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-18 10:48:48,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2024-11-18 10:48:49,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2024-11-18 10:48:49,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3601303639326452) internal successors, (2504), 1841 states have internal predecessors, (2504), 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 10:48:49,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2504 transitions. [2024-11-18 10:48:49,034 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2504 transitions. Word has length 128 [2024-11-18 10:48:49,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:48:49,037 INFO L471 AbstractCegarLoop]: Abstraction has 1842 states and 2504 transitions. [2024-11-18 10:48:49,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 10:48:49,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2504 transitions. [2024-11-18 10:48:49,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-18 10:48:49,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:48:49,040 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, 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] [2024-11-18 10:48:49,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 10:48:49,041 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:48:49,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:48:49,042 INFO L85 PathProgramCache]: Analyzing trace with hash -433901431, now seen corresponding path program 1 times [2024-11-18 10:48:49,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:48:49,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262439602] [2024-11-18 10:48:49,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:48:49,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:48:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:48:49,275 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:48:49,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:48:49,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262439602] [2024-11-18 10:48:49,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262439602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:48:49,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:48:49,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:48:49,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947302847] [2024-11-18 10:48:49,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:48:49,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:48:49,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:48:49,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:48:49,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:48:49,282 INFO L87 Difference]: Start difference. First operand 1842 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 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 10:48:51,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:48:51,211 INFO L93 Difference]: Finished difference Result 5395 states and 7326 transitions. [2024-11-18 10:48:51,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:48:51,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 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 150 [2024-11-18 10:48:51,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:48:51,223 INFO L225 Difference]: With dead ends: 5395 [2024-11-18 10:48:51,224 INFO L226 Difference]: Without dead ends: 2701 [2024-11-18 10:48:51,227 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 10:48:51,228 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:48:51,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 10:48:51,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2024-11-18 10:48:51,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2024-11-18 10:48:51,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.191851851851852) internal successors, (3218), 2700 states have internal predecessors, (3218), 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 10:48:51,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3218 transitions. [2024-11-18 10:48:51,277 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3218 transitions. Word has length 150 [2024-11-18 10:48:51,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:48:51,278 INFO L471 AbstractCegarLoop]: Abstraction has 2701 states and 3218 transitions. [2024-11-18 10:48:51,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 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 10:48:51,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3218 transitions. [2024-11-18 10:48:51,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-18 10:48:51,286 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:48:51,286 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 10:48:51,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 10:48:51,286 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:48:51,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:48:51,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1641598275, now seen corresponding path program 1 times [2024-11-18 10:48:51,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:48:51,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490178293] [2024-11-18 10:48:51,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:48:51,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:48:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:48:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:48:51,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:48:51,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490178293] [2024-11-18 10:48:51,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490178293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:48:51,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:48:51,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:48:51,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201432364] [2024-11-18 10:48:51,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:48:51,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:48:51,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:48:51,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:48:51,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:48:51,589 INFO L87 Difference]: Start difference. First operand 2701 states and 3218 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 10:48:53,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:48:53,045 INFO L93 Difference]: Finished difference Result 7108 states and 8598 transitions. [2024-11-18 10:48:53,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:48:53,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 210 [2024-11-18 10:48:53,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:48:53,062 INFO L225 Difference]: With dead ends: 7108 [2024-11-18 10:48:53,063 INFO L226 Difference]: Without dead ends: 4409 [2024-11-18 10:48:53,068 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 10:48:53,069 INFO L432 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:48:53,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 10:48:53,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2024-11-18 10:48:53,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2024-11-18 10:48:53,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 1.1705989110707804) internal successors, (5160), 4408 states have internal predecessors, (5160), 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 10:48:53,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 5160 transitions. [2024-11-18 10:48:53,146 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 5160 transitions. Word has length 210 [2024-11-18 10:48:53,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:48:53,147 INFO L471 AbstractCegarLoop]: Abstraction has 4409 states and 5160 transitions. [2024-11-18 10:48:53,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 10:48:53,147 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 5160 transitions. [2024-11-18 10:48:53,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-18 10:48:53,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:48:53,150 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 10:48:53,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 10:48:53,150 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:48:53,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:48:53,152 INFO L85 PathProgramCache]: Analyzing trace with hash 734182776, now seen corresponding path program 1 times [2024-11-18 10:48:53,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:48:53,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677806889] [2024-11-18 10:48:53,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:48:53,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:48:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:48:53,391 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-18 10:48:53,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:48:53,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677806889] [2024-11-18 10:48:53,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677806889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:48:53,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:48:53,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:48:53,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060173403] [2024-11-18 10:48:53,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:48:53,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:48:53,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:48:53,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:48:53,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:48:53,393 INFO L87 Difference]: Start difference. First operand 4409 states and 5160 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 10:48:55,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:48:55,191 INFO L93 Difference]: Finished difference Result 10936 states and 12970 transitions. [2024-11-18 10:48:55,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:48:55,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 212 [2024-11-18 10:48:55,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:48:55,211 INFO L225 Difference]: With dead ends: 10936 [2024-11-18 10:48:55,211 INFO L226 Difference]: Without dead ends: 6528 [2024-11-18 10:48:55,218 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 10:48:55,219 INFO L432 NwaCegarLoop]: 382 mSDtfsCounter, 393 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:48:55,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 10:48:55,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2024-11-18 10:48:55,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4382. [2024-11-18 10:48:55,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 1.1684546907098836) internal successors, (5119), 4381 states have internal predecessors, (5119), 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 10:48:55,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5119 transitions. [2024-11-18 10:48:55,302 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5119 transitions. Word has length 212 [2024-11-18 10:48:55,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:48:55,302 INFO L471 AbstractCegarLoop]: Abstraction has 4382 states and 5119 transitions. [2024-11-18 10:48:55,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 10:48:55,304 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5119 transitions. [2024-11-18 10:48:55,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-18 10:48:55,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:48:55,307 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:48:55,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 10:48:55,308 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:48:55,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:48:55,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1597642430, now seen corresponding path program 1 times [2024-11-18 10:48:55,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:48:55,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88183856] [2024-11-18 10:48:55,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:48:55,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:48:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:48:55,577 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 10:48:55,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:48:55,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88183856] [2024-11-18 10:48:55,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88183856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:48:55,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:48:55,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:48:55,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805614955] [2024-11-18 10:48:55,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:48:55,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:48:55,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:48:55,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:48:55,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:48:55,579 INFO L87 Difference]: Start difference. First operand 4382 states and 5119 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 10:48:57,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:48:57,196 INFO L93 Difference]: Finished difference Result 10045 states and 11706 transitions. [2024-11-18 10:48:57,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:48:57,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 278 [2024-11-18 10:48:57,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:48:57,217 INFO L225 Difference]: With dead ends: 10045 [2024-11-18 10:48:57,217 INFO L226 Difference]: Without dead ends: 5665 [2024-11-18 10:48:57,223 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 10:48:57,226 INFO L432 NwaCegarLoop]: 833 mSDtfsCounter, 378 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:48:57,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 894 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 10:48:57,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5665 states. [2024-11-18 10:48:57,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5665 to 5234. [2024-11-18 10:48:57,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 5233 states have (on average 1.1587999235620103) internal successors, (6064), 5233 states have internal predecessors, (6064), 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 10:48:57,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 6064 transitions. [2024-11-18 10:48:57,313 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 6064 transitions. Word has length 278 [2024-11-18 10:48:57,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:48:57,316 INFO L471 AbstractCegarLoop]: Abstraction has 5234 states and 6064 transitions. [2024-11-18 10:48:57,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 10:48:57,316 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 6064 transitions. [2024-11-18 10:48:57,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-18 10:48:57,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:48:57,320 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:48:57,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 10:48:57,320 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:48:57,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:48:57,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1503094523, now seen corresponding path program 1 times [2024-11-18 10:48:57,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:48:57,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755875694] [2024-11-18 10:48:57,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:48:57,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:48:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:48:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-18 10:48:57,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:48:57,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755875694] [2024-11-18 10:48:57,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755875694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:48:57,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:48:57,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:48:57,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687783643] [2024-11-18 10:48:57,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:48:57,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:48:57,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:48:57,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:48:57,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:48:57,696 INFO L87 Difference]: Start difference. First operand 5234 states and 6064 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 10:48:59,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:48:59,521 INFO L93 Difference]: Finished difference Result 13051 states and 15223 transitions. [2024-11-18 10:48:59,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:48:59,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 290 [2024-11-18 10:48:59,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:48:59,543 INFO L225 Difference]: With dead ends: 13051 [2024-11-18 10:48:59,543 INFO L226 Difference]: Without dead ends: 7391 [2024-11-18 10:48:59,550 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 10:48:59,551 INFO L432 NwaCegarLoop]: 585 mSDtfsCounter, 495 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:48:59,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 629 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 10:48:59,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7391 states. [2024-11-18 10:48:59,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7391 to 6959. [2024-11-18 10:48:59,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6959 states, 6958 states have (on average 1.1636964645012935) internal successors, (8097), 6958 states have internal predecessors, (8097), 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 10:48:59,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6959 states to 6959 states and 8097 transitions. [2024-11-18 10:48:59,655 INFO L78 Accepts]: Start accepts. Automaton has 6959 states and 8097 transitions. Word has length 290 [2024-11-18 10:48:59,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:48:59,655 INFO L471 AbstractCegarLoop]: Abstraction has 6959 states and 8097 transitions. [2024-11-18 10:48:59,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 10:48:59,656 INFO L276 IsEmpty]: Start isEmpty. Operand 6959 states and 8097 transitions. [2024-11-18 10:48:59,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-18 10:48:59,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:48:59,660 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:48:59,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 10:48:59,661 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:48:59,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:48:59,662 INFO L85 PathProgramCache]: Analyzing trace with hash 9506808, now seen corresponding path program 1 times [2024-11-18 10:48:59,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:48:59,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126420474] [2024-11-18 10:48:59,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:48:59,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:48:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:48:59,904 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-18 10:48:59,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:48:59,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126420474] [2024-11-18 10:48:59,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126420474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:48:59,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:48:59,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:48:59,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162669139] [2024-11-18 10:48:59,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:48:59,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:48:59,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:48:59,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:48:59,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:48:59,906 INFO L87 Difference]: Start difference. First operand 6959 states and 8097 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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 10:49:01,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:49:01,381 INFO L93 Difference]: Finished difference Result 17316 states and 20393 transitions. [2024-11-18 10:49:01,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:49:01,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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 10:49:01,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:49:01,441 INFO L225 Difference]: With dead ends: 17316 [2024-11-18 10:49:01,442 INFO L226 Difference]: Without dead ends: 10359 [2024-11-18 10:49:01,447 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 10:49:01,448 INFO L432 NwaCegarLoop]: 774 mSDtfsCounter, 379 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:49:01,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 841 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 10:49:01,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10359 states. [2024-11-18 10:49:01,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10359 to 9509. [2024-11-18 10:49:01,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9509 states, 9508 states have (on average 1.141459823306689) internal successors, (10853), 9508 states have internal predecessors, (10853), 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 10:49:01,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9509 states to 9509 states and 10853 transitions. [2024-11-18 10:49:01,583 INFO L78 Accepts]: Start accepts. Automaton has 9509 states and 10853 transitions. Word has length 295 [2024-11-18 10:49:01,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:49:01,584 INFO L471 AbstractCegarLoop]: Abstraction has 9509 states and 10853 transitions. [2024-11-18 10:49:01,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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 10:49:01,585 INFO L276 IsEmpty]: Start isEmpty. Operand 9509 states and 10853 transitions. [2024-11-18 10:49:01,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2024-11-18 10:49:01,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:49:01,590 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-18 10:49:01,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 10:49:01,591 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:49:01,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:49:01,592 INFO L85 PathProgramCache]: Analyzing trace with hash -881276880, now seen corresponding path program 1 times [2024-11-18 10:49:01,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:49:01,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77435625] [2024-11-18 10:49:01,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:49:01,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:49:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:49:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 10:49:01,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:49:01,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77435625] [2024-11-18 10:49:01,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77435625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:49:01,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:49:01,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:49:01,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163732724] [2024-11-18 10:49:01,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:49:01,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:49:01,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:49:01,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:49:01,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:49:01,906 INFO L87 Difference]: Start difference. First operand 9509 states and 10853 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 10:49:03,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:49:03,546 INFO L93 Difference]: Finished difference Result 22432 states and 25678 transitions. [2024-11-18 10:49:03,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:49:03,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 313 [2024-11-18 10:49:03,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:49:03,567 INFO L225 Difference]: With dead ends: 22432 [2024-11-18 10:49:03,567 INFO L226 Difference]: Without dead ends: 12493 [2024-11-18 10:49:03,579 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 10:49:03,579 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 444 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:49:03,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 294 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 10:49:03,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12493 states. [2024-11-18 10:49:03,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12493 to 11637. [2024-11-18 10:49:03,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11637 states, 11636 states have (on average 1.1473014781711928) internal successors, (13350), 11636 states have internal predecessors, (13350), 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 10:49:03,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11637 states to 11637 states and 13350 transitions. [2024-11-18 10:49:03,770 INFO L78 Accepts]: Start accepts. Automaton has 11637 states and 13350 transitions. Word has length 313 [2024-11-18 10:49:03,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:49:03,771 INFO L471 AbstractCegarLoop]: Abstraction has 11637 states and 13350 transitions. [2024-11-18 10:49:03,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 10:49:03,771 INFO L276 IsEmpty]: Start isEmpty. Operand 11637 states and 13350 transitions. [2024-11-18 10:49:03,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-18 10:49:03,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:49:03,777 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-18 10:49:03,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 10:49:03,777 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:49:03,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:49:03,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1943349219, now seen corresponding path program 1 times [2024-11-18 10:49:03,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:49:03,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307507381] [2024-11-18 10:49:03,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:49:03,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:49:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:49:04,206 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 10:49:04,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:49:04,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307507381] [2024-11-18 10:49:04,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307507381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:49:04,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:49:04,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:49:04,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177162480] [2024-11-18 10:49:04,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:49:04,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:49:04,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:49:04,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:49:04,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:49:04,208 INFO L87 Difference]: Start difference. First operand 11637 states and 13350 transitions. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 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 10:49:06,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:49:06,932 INFO L93 Difference]: Finished difference Result 41232 states and 47494 transitions. [2024-11-18 10:49:06,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:49:06,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 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 318 [2024-11-18 10:49:06,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:49:06,970 INFO L225 Difference]: With dead ends: 41232 [2024-11-18 10:49:06,970 INFO L226 Difference]: Without dead ends: 28316 [2024-11-18 10:49:06,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:49:06,987 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 867 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 2613 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 3102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 2613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:49:06,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 302 Invalid, 3102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 2613 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-18 10:49:07,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28316 states. [2024-11-18 10:49:07,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28316 to 27841. [2024-11-18 10:49:07,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27841 states, 27840 states have (on average 1.135308908045977) internal successors, (31607), 27840 states have internal predecessors, (31607), 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 10:49:07,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27841 states to 27841 states and 31607 transitions. [2024-11-18 10:49:07,294 INFO L78 Accepts]: Start accepts. Automaton has 27841 states and 31607 transitions. Word has length 318 [2024-11-18 10:49:07,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:49:07,294 INFO L471 AbstractCegarLoop]: Abstraction has 27841 states and 31607 transitions. [2024-11-18 10:49:07,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 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 10:49:07,295 INFO L276 IsEmpty]: Start isEmpty. Operand 27841 states and 31607 transitions. [2024-11-18 10:49:07,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-11-18 10:49:07,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:49:07,303 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:49:07,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 10:49:07,303 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:49:07,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:49:07,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2094585251, now seen corresponding path program 1 times [2024-11-18 10:49:07,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:49:07,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748391632] [2024-11-18 10:49:07,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:49:07,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:49:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:49:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 10:49:07,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:49:07,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748391632] [2024-11-18 10:49:07,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748391632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:49:07,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:49:07,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:49:07,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37308028] [2024-11-18 10:49:07,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:49:07,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:49:07,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:49:07,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:49:07,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:49:07,730 INFO L87 Difference]: Start difference. First operand 27841 states and 31607 transitions. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 10:49:09,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:49:09,428 INFO L93 Difference]: Finished difference Result 71054 states and 80878 transitions. [2024-11-18 10:49:09,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:49:09,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 347 [2024-11-18 10:49:09,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:49:09,491 INFO L225 Difference]: With dead ends: 71054 [2024-11-18 10:49:09,491 INFO L226 Difference]: Without dead ends: 42777 [2024-11-18 10:49:09,522 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 10:49:09,522 INFO L432 NwaCegarLoop]: 654 mSDtfsCounter, 449 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:49:09,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 704 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 10:49:09,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42777 states. [2024-11-18 10:49:10,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42777 to 41033. [2024-11-18 10:49:10,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41033 states, 41032 states have (on average 1.122514135309027) internal successors, (46059), 41032 states have internal predecessors, (46059), 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 10:49:10,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41033 states to 41033 states and 46059 transitions. [2024-11-18 10:49:10,167 INFO L78 Accepts]: Start accepts. Automaton has 41033 states and 46059 transitions. Word has length 347 [2024-11-18 10:49:10,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:49:10,169 INFO L471 AbstractCegarLoop]: Abstraction has 41033 states and 46059 transitions. [2024-11-18 10:49:10,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 10:49:10,169 INFO L276 IsEmpty]: Start isEmpty. Operand 41033 states and 46059 transitions. [2024-11-18 10:49:10,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-11-18 10:49:10,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:49:10,176 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-18 10:49:10,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 10:49:10,177 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:49:10,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:49:10,178 INFO L85 PathProgramCache]: Analyzing trace with hash 886548778, now seen corresponding path program 1 times [2024-11-18 10:49:10,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:49:10,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995817344] [2024-11-18 10:49:10,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:49:10,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:49:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:49:10,564 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-18 10:49:10,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:49:10,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995817344] [2024-11-18 10:49:10,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995817344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:49:10,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:49:10,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:49:10,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696865768] [2024-11-18 10:49:10,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:49:10,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:49:10,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:49:10,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:49:10,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:49:10,567 INFO L87 Difference]: Start difference. First operand 41033 states and 46059 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 10:49:12,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:49:12,085 INFO L93 Difference]: Finished difference Result 91426 states and 102896 transitions. [2024-11-18 10:49:12,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:49:12,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 391 [2024-11-18 10:49:12,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:49:12,149 INFO L225 Difference]: With dead ends: 91426 [2024-11-18 10:49:12,149 INFO L226 Difference]: Without dead ends: 49966 [2024-11-18 10:49:12,287 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 10:49:12,288 INFO L432 NwaCegarLoop]: 676 mSDtfsCounter, 440 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:49:12,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 727 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 10:49:12,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49966 states. [2024-11-18 10:49:12,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49966 to 49959. [2024-11-18 10:49:12,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49959 states, 49958 states have (on average 1.1129548821009647) internal successors, (55601), 49958 states have internal predecessors, (55601), 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 10:49:13,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49959 states to 49959 states and 55601 transitions. [2024-11-18 10:49:13,061 INFO L78 Accepts]: Start accepts. Automaton has 49959 states and 55601 transitions. Word has length 391 [2024-11-18 10:49:13,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:49:13,061 INFO L471 AbstractCegarLoop]: Abstraction has 49959 states and 55601 transitions. [2024-11-18 10:49:13,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 10:49:13,062 INFO L276 IsEmpty]: Start isEmpty. Operand 49959 states and 55601 transitions. [2024-11-18 10:49:13,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2024-11-18 10:49:13,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:49:13,069 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-18 10:49:13,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 10:49:13,070 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:49:13,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:49:13,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1094283383, now seen corresponding path program 1 times [2024-11-18 10:49:13,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:49:13,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848556040] [2024-11-18 10:49:13,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:49:13,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:49:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:49:13,729 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 244 proven. 82 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 10:49:13,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:49:13,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848556040] [2024-11-18 10:49:13,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848556040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:49:13,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654430490] [2024-11-18 10:49:13,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:49:13,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:49:13,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:49:13,734 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 10:49:13,736 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 10:49:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:49:13,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:49:14,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:49:14,417 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 244 proven. 82 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 10:49:14,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:49:14,830 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 10:49:14,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654430490] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 10:49:14,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 10:49:14,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-18 10:49:14,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433828848] [2024-11-18 10:49:14,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:49:14,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:49:14,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:49:14,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:49:14,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:49:14,834 INFO L87 Difference]: Start difference. First operand 49959 states and 55601 transitions. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 3 states have internal predecessors, (339), 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 10:49:17,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:49:17,366 INFO L93 Difference]: Finished difference Result 120772 states and 134197 transitions. [2024-11-18 10:49:17,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:49:17,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 3 states have internal predecessors, (339), 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 394 [2024-11-18 10:49:17,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:49:17,450 INFO L225 Difference]: With dead ends: 120772 [2024-11-18 10:49:17,451 INFO L226 Difference]: Without dead ends: 69946 [2024-11-18 10:49:17,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 785 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:49:17,603 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 738 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 2538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:49:17,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 155 Invalid, 2538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-18 10:49:17,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69946 states. [2024-11-18 10:49:18,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69946 to 67818. [2024-11-18 10:49:18,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67818 states, 67817 states have (on average 1.0979105534010647) internal successors, (74457), 67817 states have internal predecessors, (74457), 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 10:49:18,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67818 states to 67818 states and 74457 transitions. [2024-11-18 10:49:18,308 INFO L78 Accepts]: Start accepts. Automaton has 67818 states and 74457 transitions. Word has length 394 [2024-11-18 10:49:18,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:49:18,309 INFO L471 AbstractCegarLoop]: Abstraction has 67818 states and 74457 transitions. [2024-11-18 10:49:18,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 3 states have internal predecessors, (339), 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 10:49:18,309 INFO L276 IsEmpty]: Start isEmpty. Operand 67818 states and 74457 transitions. [2024-11-18 10:49:18,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2024-11-18 10:49:18,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:49:18,319 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-18 10:49:18,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 10:49:18,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 10:49:18,520 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:49:18,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:49:18,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1101543085, now seen corresponding path program 1 times [2024-11-18 10:49:18,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:49:18,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137113251] [2024-11-18 10:49:18,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:49:18,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:49:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:49:19,293 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 10:49:19,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:49:19,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137113251] [2024-11-18 10:49:19,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137113251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:49:19,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:49:19,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:49:19,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737309228] [2024-11-18 10:49:19,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:49:19,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:49:19,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:49:19,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:49:19,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:49:19,297 INFO L87 Difference]: Start difference. First operand 67818 states and 74457 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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 10:49:20,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:49:20,862 INFO L93 Difference]: Finished difference Result 139463 states and 153018 transitions. [2024-11-18 10:49:20,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:49:20,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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 424 [2024-11-18 10:49:20,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:49:20,937 INFO L225 Difference]: With dead ends: 139463 [2024-11-18 10:49:20,938 INFO L226 Difference]: Without dead ends: 71647 [2024-11-18 10:49:20,974 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 10:49:20,975 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 358 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:49:20,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 349 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 10:49:21,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71647 states. [2024-11-18 10:49:21,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71647 to 70791. [2024-11-18 10:49:21,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70791 states, 70790 states have (on average 1.09598813391722) internal successors, (77585), 70790 states have internal predecessors, (77585), 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 10:49:21,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70791 states to 70791 states and 77585 transitions. [2024-11-18 10:49:21,784 INFO L78 Accepts]: Start accepts. Automaton has 70791 states and 77585 transitions. Word has length 424 [2024-11-18 10:49:21,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:49:21,784 INFO L471 AbstractCegarLoop]: Abstraction has 70791 states and 77585 transitions. [2024-11-18 10:49:21,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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 10:49:21,785 INFO L276 IsEmpty]: Start isEmpty. Operand 70791 states and 77585 transitions. [2024-11-18 10:49:21,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2024-11-18 10:49:21,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:49:21,791 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-11-18 10:49:21,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 10:49:21,791 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:49:21,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:49:21,792 INFO L85 PathProgramCache]: Analyzing trace with hash 186174739, now seen corresponding path program 1 times [2024-11-18 10:49:21,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:49:21,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718819323] [2024-11-18 10:49:21,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:49:21,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:49:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:49:22,310 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-18 10:49:22,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:49:22,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718819323] [2024-11-18 10:49:22,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718819323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:49:22,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:49:22,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:49:22,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115171755] [2024-11-18 10:49:22,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:49:22,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:49:22,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:49:22,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:49:22,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:49:22,315 INFO L87 Difference]: Start difference. First operand 70791 states and 77585 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 10:49:24,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:49:24,163 INFO L93 Difference]: Finished difference Result 148384 states and 162924 transitions. [2024-11-18 10:49:24,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:49:24,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 433 [2024-11-18 10:49:24,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:49:24,237 INFO L225 Difference]: With dead ends: 148384 [2024-11-18 10:49:24,237 INFO L226 Difference]: Without dead ends: 76741 [2024-11-18 10:49:24,265 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 10:49:24,266 INFO L432 NwaCegarLoop]: 586 mSDtfsCounter, 448 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:49:24,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 611 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 10:49:24,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76741 states. [2024-11-18 10:49:24,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76741 to 66506. [2024-11-18 10:49:24,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66506 states, 66505 states have (on average 1.0966694233516276) internal successors, (72934), 66505 states have internal predecessors, (72934), 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 10:49:24,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66506 states to 66506 states and 72934 transitions. [2024-11-18 10:49:24,954 INFO L78 Accepts]: Start accepts. Automaton has 66506 states and 72934 transitions. Word has length 433 [2024-11-18 10:49:24,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:49:24,954 INFO L471 AbstractCegarLoop]: Abstraction has 66506 states and 72934 transitions. [2024-11-18 10:49:24,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 10:49:24,954 INFO L276 IsEmpty]: Start isEmpty. Operand 66506 states and 72934 transitions. [2024-11-18 10:49:24,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2024-11-18 10:49:24,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:49:24,961 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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 10:49:24,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 10:49:24,961 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:49:24,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:49:24,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1324595424, now seen corresponding path program 1 times [2024-11-18 10:49:24,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:49:24,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923399504] [2024-11-18 10:49:24,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:49:24,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:49:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:49:26,314 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 382 proven. 56 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-18 10:49:26,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:49:26,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923399504] [2024-11-18 10:49:26,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923399504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:49:26,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291713548] [2024-11-18 10:49:26,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:49:26,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:49:26,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:49:26,318 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 10:49:26,320 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 10:49:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:49:26,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 10:49:26,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:49:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 441 proven. 82 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-18 10:49:26,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:49:27,975 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 441 proven. 82 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-18 10:49:27,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291713548] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 10:49:27,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 10:49:27,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-18 10:49:27,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564497908] [2024-11-18 10:49:27,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 10:49:27,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 10:49:27,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:49:27,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 10:49:27,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-18 10:49:27,978 INFO L87 Difference]: Start difference. First operand 66506 states and 72934 transitions. Second operand has 9 states, 9 states have (on average 83.66666666666667) internal successors, (753), 9 states have internal predecessors, (753), 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 10:49:36,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:49:36,725 INFO L93 Difference]: Finished difference Result 170088 states and 186264 transitions. [2024-11-18 10:49:36,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 10:49:36,726 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 83.66666666666667) internal successors, (753), 9 states have internal predecessors, (753), 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 438 [2024-11-18 10:49:36,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:49:36,836 INFO L225 Difference]: With dead ends: 170088 [2024-11-18 10:49:36,836 INFO L226 Difference]: Without dead ends: 102734 [2024-11-18 10:49:36,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 881 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2024-11-18 10:49:36,859 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 7737 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 8733 mSolverCounterSat, 1937 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7737 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 10670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1937 IncrementalHoareTripleChecker+Valid, 8733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:49:36,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7737 Valid, 290 Invalid, 10670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1937 Valid, 8733 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2024-11-18 10:49:36,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102734 states. [2024-11-18 10:49:37,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102734 to 92441. [2024-11-18 10:49:38,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92441 states, 92440 states have (on average 1.0859692773691043) internal successors, (100387), 92440 states have internal predecessors, (100387), 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 10:49:38,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92441 states to 92441 states and 100387 transitions. [2024-11-18 10:49:38,113 INFO L78 Accepts]: Start accepts. Automaton has 92441 states and 100387 transitions. Word has length 438 [2024-11-18 10:49:38,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:49:38,113 INFO L471 AbstractCegarLoop]: Abstraction has 92441 states and 100387 transitions. [2024-11-18 10:49:38,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 83.66666666666667) internal successors, (753), 9 states have internal predecessors, (753), 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 10:49:38,114 INFO L276 IsEmpty]: Start isEmpty. Operand 92441 states and 100387 transitions. [2024-11-18 10:49:38,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-18 10:49:38,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:49:38,124 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 10:49:38,138 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 10:49:38,324 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,SelfDestructingSolverStorable15 [2024-11-18 10:49:38,325 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:49:38,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:49:38,325 INFO L85 PathProgramCache]: Analyzing trace with hash -943768587, now seen corresponding path program 1 times [2024-11-18 10:49:38,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:49:38,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989723803] [2024-11-18 10:49:38,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:49:38,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:49:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:49:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 400 proven. 73 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-11-18 10:49:39,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:49:39,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989723803] [2024-11-18 10:49:39,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989723803] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:49:39,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939482478] [2024-11-18 10:49:39,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:49:39,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:49:39,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:49:39,094 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 10:49:39,095 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 10:49:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:49:39,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:49:39,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:49:39,450 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 400 proven. 73 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-11-18 10:49:39,450 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:49:39,744 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 473 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-11-18 10:49:39,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939482478] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 10:49:39,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 10:49:39,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-18 10:49:39,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231833079] [2024-11-18 10:49:39,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:49:39,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:49:39,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:49:39,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:49:39,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:49:39,747 INFO L87 Difference]: Start difference. First operand 92441 states and 100387 transitions. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 3 states have internal predecessors, (347), 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 10:49:42,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:49:42,652 INFO L93 Difference]: Finished difference Result 198931 states and 215930 transitions. [2024-11-18 10:49:42,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:49:42,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 3 states have internal predecessors, (347), 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 468 [2024-11-18 10:49:42,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:49:42,780 INFO L225 Difference]: With dead ends: 198931 [2024-11-18 10:49:42,780 INFO L226 Difference]: Without dead ends: 106917 [2024-11-18 10:49:42,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 937 GetRequests, 933 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:49:42,830 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 815 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2252 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 2687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 2252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:49:42,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 214 Invalid, 2687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 2252 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-18 10:49:42,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106917 states. [2024-11-18 10:49:44,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106917 to 102666. [2024-11-18 10:49:44,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102666 states, 102665 states have (on average 1.084673452491112) internal successors, (111358), 102665 states have internal predecessors, (111358), 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 10:49:44,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102666 states to 102666 states and 111358 transitions. [2024-11-18 10:49:44,355 INFO L78 Accepts]: Start accepts. Automaton has 102666 states and 111358 transitions. Word has length 468 [2024-11-18 10:49:44,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:49:44,355 INFO L471 AbstractCegarLoop]: Abstraction has 102666 states and 111358 transitions. [2024-11-18 10:49:44,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 3 states have internal predecessors, (347), 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 10:49:44,355 INFO L276 IsEmpty]: Start isEmpty. Operand 102666 states and 111358 transitions. [2024-11-18 10:49:44,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2024-11-18 10:49:44,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:49:44,362 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-18 10:49:44,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 10:49:44,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:49:44,563 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:49:44,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:49:44,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1062405964, now seen corresponding path program 1 times [2024-11-18 10:49:44,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:49:44,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443924330] [2024-11-18 10:49:44,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:49:44,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:49:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:49:44,862 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 10:49:44,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:49:44,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443924330] [2024-11-18 10:49:44,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443924330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:49:44,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:49:44,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:49:44,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465223026] [2024-11-18 10:49:44,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:49:44,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:49:44,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:49:44,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:49:44,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:49:44,864 INFO L87 Difference]: Start difference. First operand 102666 states and 111358 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 10:49:46,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:49:46,798 INFO L93 Difference]: Finished difference Result 204049 states and 221351 transitions. [2024-11-18 10:49:46,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:49:46,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 501 [2024-11-18 10:49:46,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:49:46,936 INFO L225 Difference]: With dead ends: 204049 [2024-11-18 10:49:46,936 INFO L226 Difference]: Without dead ends: 101809 [2024-11-18 10:49:47,006 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 10:49:47,007 INFO L432 NwaCegarLoop]: 639 mSDtfsCounter, 437 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:49:47,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 695 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 10:49:47,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101809 states. [2024-11-18 10:49:48,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101809 to 96705. [2024-11-18 10:49:48,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96705 states, 96704 states have (on average 1.0720239080079417) internal successors, (103669), 96704 states have internal predecessors, (103669), 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 10:49:48,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96705 states to 96705 states and 103669 transitions. [2024-11-18 10:49:48,796 INFO L78 Accepts]: Start accepts. Automaton has 96705 states and 103669 transitions. Word has length 501 [2024-11-18 10:49:48,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:49:48,797 INFO L471 AbstractCegarLoop]: Abstraction has 96705 states and 103669 transitions. [2024-11-18 10:49:48,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 10:49:48,797 INFO L276 IsEmpty]: Start isEmpty. Operand 96705 states and 103669 transitions. [2024-11-18 10:49:48,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2024-11-18 10:49:48,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:49:48,809 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:49:48,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 10:49:48,809 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:49:48,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:49:48,809 INFO L85 PathProgramCache]: Analyzing trace with hash 224079906, now seen corresponding path program 1 times [2024-11-18 10:49:48,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:49:48,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502522718] [2024-11-18 10:49:48,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:49:48,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:49:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:49:49,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 490 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2024-11-18 10:49:49,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:49:49,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502522718] [2024-11-18 10:49:49,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502522718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:49:49,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:49:49,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:49:49,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670562492] [2024-11-18 10:49:49,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:49:49,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:49:49,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:49:49,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:49:49,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:49:49,133 INFO L87 Difference]: Start difference. First operand 96705 states and 103669 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 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)