./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.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 19261aa21d7ff8465246029ba19079abe08492ae10904d6c12d0346fe16f4773 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 16:07:48,667 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:07:48,739 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:07:48,742 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:07:48,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:07:48,775 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:07:48,776 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:07:48,776 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:07:48,777 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:07:48,778 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:07:48,778 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:07:48,779 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:07:48,779 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:07:48,780 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:07:48,782 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:07:48,782 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:07:48,783 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:07:48,783 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:07:48,783 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:07:48,783 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:07:48,784 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:07:48,787 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:07:48,788 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:07:48,788 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:07:48,788 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:07:48,789 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:07:48,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:07:48,789 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:07:48,790 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:07:48,790 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:07:48,790 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:07:48,790 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:07:48,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:07:48,791 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:07:48,791 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:07:48,791 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:07:48,792 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:07:48,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:07:48,792 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:07:48,792 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:07:48,792 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:07:48,794 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:07:48,794 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19261aa21d7ff8465246029ba19079abe08492ae10904d6c12d0346fe16f4773 [2024-11-08 16:07:49,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:07:49,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:07:49,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:07:49,074 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:07:49,074 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:07:49,076 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-08 16:07:50,479 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:07:50,737 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:07:50,739 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-08 16:07:50,755 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0626d3ab4/373cd863e1184ef0bfee73a9fc73c1f9/FLAGd062ba32c [2024-11-08 16:07:51,050 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0626d3ab4/373cd863e1184ef0bfee73a9fc73c1f9 [2024-11-08 16:07:51,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:07:51,053 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:07:51,054 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:07:51,055 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:07:51,065 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:07:51,066 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:07:51" (1/1) ... [2024-11-08 16:07:51,067 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d5680a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:51, skipping insertion in model container [2024-11-08 16:07:51,067 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:07:51" (1/1) ... [2024-11-08 16:07:51,115 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:07:51,383 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/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7806,7819] [2024-11-08 16:07:51,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:07:51,458 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:07:51,523 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/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7806,7819] [2024-11-08 16:07:51,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:07:51,583 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:07:51,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:51 WrapperNode [2024-11-08 16:07:51,584 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:07:51,585 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:07:51,585 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:07:51,585 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:07:51,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:51" (1/1) ... [2024-11-08 16:07:51,602 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:51" (1/1) ... [2024-11-08 16:07:51,646 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 687 [2024-11-08 16:07:51,646 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:07:51,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:07:51,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:07:51,647 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:07:51,662 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:51" (1/1) ... [2024-11-08 16:07:51,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:51" (1/1) ... [2024-11-08 16:07:51,672 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:51" (1/1) ... [2024-11-08 16:07:51,702 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]. [2024-11-08 16:07:51,703 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:51" (1/1) ... [2024-11-08 16:07:51,703 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:51" (1/1) ... [2024-11-08 16:07:51,714 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:51" (1/1) ... [2024-11-08 16:07:51,719 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:51" (1/1) ... [2024-11-08 16:07:51,722 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:51" (1/1) ... [2024-11-08 16:07:51,725 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:51" (1/1) ... [2024-11-08 16:07:51,730 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:07:51,731 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:07:51,731 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:07:51,731 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:07:51,732 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:51" (1/1) ... [2024-11-08 16:07:51,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:07:51,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:07:51,775 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) [2024-11-08 16:07:51,783 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 [2024-11-08 16:07:51,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:07:51,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:07:51,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:07:51,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:07:51,990 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:07:51,991 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:07:52,655 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-08 16:07:52,655 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:07:52,675 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:07:52,675 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:07:52,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:07:52 BoogieIcfgContainer [2024-11-08 16:07:52,676 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:07:52,678 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:07:52,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:07:52,681 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:07:52,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:07:51" (1/3) ... [2024-11-08 16:07:52,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31546da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:07:52, skipping insertion in model container [2024-11-08 16:07:52,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:51" (2/3) ... [2024-11-08 16:07:52,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31546da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:07:52, skipping insertion in model container [2024-11-08 16:07:52,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:07:52" (3/3) ... [2024-11-08 16:07:52,683 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-08 16:07:52,697 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:07:52,697 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 16:07:52,763 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:07:52,769 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;@4ae1217a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:07:52,769 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 16:07:52,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.7619047619047619) internal successors, (259), 148 states have internal predecessors, (259), 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) [2024-11-08 16:07:52,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 16:07:52,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:52,782 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:52,783 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:52,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:52,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1468963440, now seen corresponding path program 1 times [2024-11-08 16:07:52,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:52,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99540791] [2024-11-08 16:07:52,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:52,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:53,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:53,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:53,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99540791] [2024-11-08 16:07:53,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99540791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:53,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:53,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:07:53,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725198276] [2024-11-08 16:07:53,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:53,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:07:53,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:53,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:07:53,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:53,313 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.7619047619047619) internal successors, (259), 148 states have internal predecessors, (259), 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 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-08 16:07:53,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:53,426 INFO L93 Difference]: Finished difference Result 323 states and 547 transitions. [2024-11-08 16:07:53,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:07:53,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2024-11-08 16:07:53,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:53,464 INFO L225 Difference]: With dead ends: 323 [2024-11-08 16:07:53,470 INFO L226 Difference]: Without dead ends: 225 [2024-11-08 16:07:53,473 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 [2024-11-08 16:07:53,476 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 150 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:53,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 452 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:07:53,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-08 16:07:53,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2024-11-08 16:07:53,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.572072072072072) internal successors, (349), 222 states have internal predecessors, (349), 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) [2024-11-08 16:07:53,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 349 transitions. [2024-11-08 16:07:53,544 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 349 transitions. Word has length 62 [2024-11-08 16:07:53,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:53,545 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 349 transitions. [2024-11-08 16:07:53,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-08 16:07:53,546 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 349 transitions. [2024-11-08 16:07:53,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 16:07:53,548 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:53,548 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:53,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:07:53,549 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:53,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:53,550 INFO L85 PathProgramCache]: Analyzing trace with hash -240910223, now seen corresponding path program 1 times [2024-11-08 16:07:53,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:53,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336509491] [2024-11-08 16:07:53,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:53,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:53,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:53,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:53,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336509491] [2024-11-08 16:07:53,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336509491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:53,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:53,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:07:53,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763988099] [2024-11-08 16:07:53,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:53,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:07:53,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:53,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:07:53,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:53,745 INFO L87 Difference]: Start difference. First operand 223 states and 349 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-11-08 16:07:53,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:53,789 INFO L93 Difference]: Finished difference Result 539 states and 869 transitions. [2024-11-08 16:07:53,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:07:53,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2024-11-08 16:07:53,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:53,792 INFO L225 Difference]: With dead ends: 539 [2024-11-08 16:07:53,792 INFO L226 Difference]: Without dead ends: 373 [2024-11-08 16:07:53,793 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 [2024-11-08 16:07:53,795 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 125 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:53,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 415 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:07:53,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-11-08 16:07:53,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 371. [2024-11-08 16:07:53,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.6) internal successors, (592), 370 states have internal predecessors, (592), 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) [2024-11-08 16:07:53,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 592 transitions. [2024-11-08 16:07:53,837 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 592 transitions. Word has length 64 [2024-11-08 16:07:53,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:53,838 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 592 transitions. [2024-11-08 16:07:53,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-11-08 16:07:53,838 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 592 transitions. [2024-11-08 16:07:53,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-08 16:07:53,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:53,841 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:53,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:07:53,841 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:53,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:53,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1851209774, now seen corresponding path program 1 times [2024-11-08 16:07:53,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:53,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278814216] [2024-11-08 16:07:53,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:53,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:53,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:53,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:53,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278814216] [2024-11-08 16:07:53,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278814216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:53,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:53,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:07:53,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887983869] [2024-11-08 16:07:53,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:53,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:07:53,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:53,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:07:53,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:53,988 INFO L87 Difference]: Start difference. First operand 371 states and 592 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-08 16:07:54,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:54,021 INFO L93 Difference]: Finished difference Result 967 states and 1570 transitions. [2024-11-08 16:07:54,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:07:54,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2024-11-08 16:07:54,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:54,025 INFO L225 Difference]: With dead ends: 967 [2024-11-08 16:07:54,025 INFO L226 Difference]: Without dead ends: 653 [2024-11-08 16:07:54,028 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 [2024-11-08 16:07:54,032 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 119 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:54,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 416 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:07:54,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2024-11-08 16:07:54,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 651. [2024-11-08 16:07:54,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 650 states have (on average 1.6123076923076922) internal successors, (1048), 650 states have internal predecessors, (1048), 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) [2024-11-08 16:07:54,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1048 transitions. [2024-11-08 16:07:54,064 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1048 transitions. Word has length 66 [2024-11-08 16:07:54,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:54,065 INFO L471 AbstractCegarLoop]: Abstraction has 651 states and 1048 transitions. [2024-11-08 16:07:54,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-08 16:07:54,068 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1048 transitions. [2024-11-08 16:07:54,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 16:07:54,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:54,073 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:54,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:07:54,073 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:54,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:54,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1666116403, now seen corresponding path program 1 times [2024-11-08 16:07:54,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:54,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046932523] [2024-11-08 16:07:54,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:54,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:54,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:54,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:54,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046932523] [2024-11-08 16:07:54,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046932523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:54,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:54,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:07:54,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795441348] [2024-11-08 16:07:54,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:54,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:07:54,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:54,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:07:54,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:07:54,376 INFO L87 Difference]: Start difference. First operand 651 states and 1048 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-08 16:07:54,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:54,586 INFO L93 Difference]: Finished difference Result 2807 states and 4618 transitions. [2024-11-08 16:07:54,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:07:54,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2024-11-08 16:07:54,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:54,595 INFO L225 Difference]: With dead ends: 2807 [2024-11-08 16:07:54,596 INFO L226 Difference]: Without dead ends: 2213 [2024-11-08 16:07:54,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:07:54,601 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 857 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:54,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 1617 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:07:54,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2024-11-08 16:07:54,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 1170. [2024-11-08 16:07:54,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1169 states have (on average 1.6236099230111207) internal successors, (1898), 1169 states have internal predecessors, (1898), 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) [2024-11-08 16:07:54,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1898 transitions. [2024-11-08 16:07:54,639 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1898 transitions. Word has length 68 [2024-11-08 16:07:54,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:54,641 INFO L471 AbstractCegarLoop]: Abstraction has 1170 states and 1898 transitions. [2024-11-08 16:07:54,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-08 16:07:54,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1898 transitions. [2024-11-08 16:07:54,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 16:07:54,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:54,643 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:54,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:07:54,644 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:54,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:54,646 INFO L85 PathProgramCache]: Analyzing trace with hash 47496755, now seen corresponding path program 1 times [2024-11-08 16:07:54,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:54,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958706427] [2024-11-08 16:07:54,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:54,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:54,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:54,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:54,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958706427] [2024-11-08 16:07:54,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958706427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:54,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:54,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:07:54,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875138933] [2024-11-08 16:07:54,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:54,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:07:54,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:54,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:07:54,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:07:54,804 INFO L87 Difference]: Start difference. First operand 1170 states and 1898 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-11-08 16:07:54,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:54,887 INFO L93 Difference]: Finished difference Result 3409 states and 5599 transitions. [2024-11-08 16:07:54,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:07:54,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 69 [2024-11-08 16:07:54,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:54,897 INFO L225 Difference]: With dead ends: 3409 [2024-11-08 16:07:54,897 INFO L226 Difference]: Without dead ends: 2296 [2024-11-08 16:07:54,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:07:54,902 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 430 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:54,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 662 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:07:54,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2024-11-08 16:07:54,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 1724. [2024-11-08 16:07:54,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1723 states have (on average 1.6297156123041208) internal successors, (2808), 1723 states have internal predecessors, (2808), 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) [2024-11-08 16:07:54,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2808 transitions. [2024-11-08 16:07:54,959 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2808 transitions. Word has length 69 [2024-11-08 16:07:54,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:54,961 INFO L471 AbstractCegarLoop]: Abstraction has 1724 states and 2808 transitions. [2024-11-08 16:07:54,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-11-08 16:07:54,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2808 transitions. [2024-11-08 16:07:54,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 16:07:54,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:54,964 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:54,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:07:54,964 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:54,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:54,965 INFO L85 PathProgramCache]: Analyzing trace with hash -613931840, now seen corresponding path program 1 times [2024-11-08 16:07:54,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:54,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901944204] [2024-11-08 16:07:54,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:54,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:55,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:55,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:55,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901944204] [2024-11-08 16:07:55,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901944204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:55,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:55,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:07:55,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246999934] [2024-11-08 16:07:55,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:55,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:07:55,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:55,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:07:55,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:55,050 INFO L87 Difference]: Start difference. First operand 1724 states and 2808 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-08 16:07:55,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:55,099 INFO L93 Difference]: Finished difference Result 3779 states and 6218 transitions. [2024-11-08 16:07:55,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:07:55,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2024-11-08 16:07:55,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:55,112 INFO L225 Difference]: With dead ends: 3779 [2024-11-08 16:07:55,112 INFO L226 Difference]: Without dead ends: 2591 [2024-11-08 16:07:55,115 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 [2024-11-08 16:07:55,115 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 132 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:55,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 512 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:07:55,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2024-11-08 16:07:55,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2589. [2024-11-08 16:07:55,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2589 states, 2588 states have (on average 1.6333075734157652) internal successors, (4227), 2588 states have internal predecessors, (4227), 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) [2024-11-08 16:07:55,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 4227 transitions. [2024-11-08 16:07:55,166 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 4227 transitions. Word has length 70 [2024-11-08 16:07:55,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:55,166 INFO L471 AbstractCegarLoop]: Abstraction has 2589 states and 4227 transitions. [2024-11-08 16:07:55,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-08 16:07:55,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 4227 transitions. [2024-11-08 16:07:55,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 16:07:55,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:55,168 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:55,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:07:55,168 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:55,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:55,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1843763252, now seen corresponding path program 1 times [2024-11-08 16:07:55,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:55,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667770008] [2024-11-08 16:07:55,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:55,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:55,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:55,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:55,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667770008] [2024-11-08 16:07:55,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667770008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:55,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:55,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:07:55,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835707958] [2024-11-08 16:07:55,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:55,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:07:55,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:55,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:07:55,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:55,246 INFO L87 Difference]: Start difference. First operand 2589 states and 4227 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-08 16:07:55,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:55,284 INFO L93 Difference]: Finished difference Result 5033 states and 8246 transitions. [2024-11-08 16:07:55,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:07:55,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2024-11-08 16:07:55,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:55,297 INFO L225 Difference]: With dead ends: 5033 [2024-11-08 16:07:55,298 INFO L226 Difference]: Without dead ends: 3599 [2024-11-08 16:07:55,301 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 [2024-11-08 16:07:55,301 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 126 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:55,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 498 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:07:55,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3599 states. [2024-11-08 16:07:55,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3599 to 3597. [2024-11-08 16:07:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 3596 states have (on average 1.628754171301446) internal successors, (5857), 3596 states have internal predecessors, (5857), 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) [2024-11-08 16:07:55,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 5857 transitions. [2024-11-08 16:07:55,393 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 5857 transitions. Word has length 70 [2024-11-08 16:07:55,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:55,394 INFO L471 AbstractCegarLoop]: Abstraction has 3597 states and 5857 transitions. [2024-11-08 16:07:55,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-08 16:07:55,394 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 5857 transitions. [2024-11-08 16:07:55,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 16:07:55,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:55,395 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:55,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:07:55,396 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:55,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:55,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1414453242, now seen corresponding path program 1 times [2024-11-08 16:07:55,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:55,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478333447] [2024-11-08 16:07:55,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:55,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:55,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:55,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:55,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478333447] [2024-11-08 16:07:55,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478333447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:55,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:55,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:07:55,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094085451] [2024-11-08 16:07:55,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:55,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:07:55,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:55,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:07:55,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:07:55,515 INFO L87 Difference]: Start difference. First operand 3597 states and 5857 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-08 16:07:55,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:55,637 INFO L93 Difference]: Finished difference Result 11303 states and 18475 transitions. [2024-11-08 16:07:55,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:07:55,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 70 [2024-11-08 16:07:55,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:55,666 INFO L225 Difference]: With dead ends: 11303 [2024-11-08 16:07:55,666 INFO L226 Difference]: Without dead ends: 7781 [2024-11-08 16:07:55,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:07:55,676 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 429 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:55,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 747 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:07:55,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7781 states. [2024-11-08 16:07:55,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7781 to 5670. [2024-11-08 16:07:55,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5670 states, 5669 states have (on average 1.6232139707179396) internal successors, (9202), 5669 states have internal predecessors, (9202), 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) [2024-11-08 16:07:55,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5670 states to 5670 states and 9202 transitions. [2024-11-08 16:07:55,799 INFO L78 Accepts]: Start accepts. Automaton has 5670 states and 9202 transitions. Word has length 70 [2024-11-08 16:07:55,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:55,800 INFO L471 AbstractCegarLoop]: Abstraction has 5670 states and 9202 transitions. [2024-11-08 16:07:55,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-08 16:07:55,800 INFO L276 IsEmpty]: Start isEmpty. Operand 5670 states and 9202 transitions. [2024-11-08 16:07:55,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 16:07:55,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:55,801 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:55,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 16:07:55,801 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:55,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:55,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1510229994, now seen corresponding path program 1 times [2024-11-08 16:07:55,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:55,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662140877] [2024-11-08 16:07:55,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:55,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:55,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:55,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:55,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662140877] [2024-11-08 16:07:55,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662140877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:55,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:55,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:07:55,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609984723] [2024-11-08 16:07:55,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:55,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:07:55,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:55,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:07:55,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:55,908 INFO L87 Difference]: Start difference. First operand 5670 states and 9202 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-08 16:07:55,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:55,958 INFO L93 Difference]: Finished difference Result 11090 states and 18039 transitions. [2024-11-08 16:07:55,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:07:55,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2024-11-08 16:07:55,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:56,000 INFO L225 Difference]: With dead ends: 11090 [2024-11-08 16:07:56,001 INFO L226 Difference]: Without dead ends: 7838 [2024-11-08 16:07:56,008 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 [2024-11-08 16:07:56,009 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 120 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:56,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 475 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:07:56,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7838 states. [2024-11-08 16:07:56,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7838 to 7836. [2024-11-08 16:07:56,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7836 states, 7835 states have (on average 1.61531589023612) internal successors, (12656), 7835 states have internal predecessors, (12656), 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) [2024-11-08 16:07:56,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7836 states to 7836 states and 12656 transitions. [2024-11-08 16:07:56,161 INFO L78 Accepts]: Start accepts. Automaton has 7836 states and 12656 transitions. Word has length 70 [2024-11-08 16:07:56,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:56,161 INFO L471 AbstractCegarLoop]: Abstraction has 7836 states and 12656 transitions. [2024-11-08 16:07:56,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-08 16:07:56,162 INFO L276 IsEmpty]: Start isEmpty. Operand 7836 states and 12656 transitions. [2024-11-08 16:07:56,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-08 16:07:56,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:56,163 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:56,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 16:07:56,163 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:56,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:56,164 INFO L85 PathProgramCache]: Analyzing trace with hash 844989402, now seen corresponding path program 1 times [2024-11-08 16:07:56,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:56,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338999766] [2024-11-08 16:07:56,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:56,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:56,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:56,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:56,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338999766] [2024-11-08 16:07:56,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338999766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:56,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:56,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:07:56,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083025995] [2024-11-08 16:07:56,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:56,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:07:56,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:56,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:07:56,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:07:56,258 INFO L87 Difference]: Start difference. First operand 7836 states and 12656 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-11-08 16:07:56,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:56,426 INFO L93 Difference]: Finished difference Result 24465 states and 39613 transitions. [2024-11-08 16:07:56,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:07:56,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 71 [2024-11-08 16:07:56,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:56,461 INFO L225 Difference]: With dead ends: 24465 [2024-11-08 16:07:56,462 INFO L226 Difference]: Without dead ends: 16720 [2024-11-08 16:07:56,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:07:56,473 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 427 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:56,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 749 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:07:56,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16720 states. [2024-11-08 16:07:56,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16720 to 12235. [2024-11-08 16:07:56,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12235 states, 12234 states have (on average 1.607242112146477) internal successors, (19663), 12234 states have internal predecessors, (19663), 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) [2024-11-08 16:07:56,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12235 states to 12235 states and 19663 transitions. [2024-11-08 16:07:56,759 INFO L78 Accepts]: Start accepts. Automaton has 12235 states and 19663 transitions. Word has length 71 [2024-11-08 16:07:56,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:56,760 INFO L471 AbstractCegarLoop]: Abstraction has 12235 states and 19663 transitions. [2024-11-08 16:07:56,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-11-08 16:07:56,760 INFO L276 IsEmpty]: Start isEmpty. Operand 12235 states and 19663 transitions. [2024-11-08 16:07:56,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 16:07:56,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:56,761 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:56,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 16:07:56,761 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:56,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:56,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1231314837, now seen corresponding path program 1 times [2024-11-08 16:07:56,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:56,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055664447] [2024-11-08 16:07:56,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:56,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:56,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:56,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:56,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055664447] [2024-11-08 16:07:56,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055664447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:56,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:56,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:07:56,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339138744] [2024-11-08 16:07:56,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:56,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:07:56,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:56,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:07:56,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:07:56,981 INFO L87 Difference]: Start difference. First operand 12235 states and 19663 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-11-08 16:07:57,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:57,187 INFO L93 Difference]: Finished difference Result 24381 states and 39202 transitions. [2024-11-08 16:07:57,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:07:57,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 73 [2024-11-08 16:07:57,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:57,213 INFO L225 Difference]: With dead ends: 24381 [2024-11-08 16:07:57,214 INFO L226 Difference]: Without dead ends: 12237 [2024-11-08 16:07:57,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:07:57,227 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 120 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:57,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 800 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:07:57,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12237 states. [2024-11-08 16:07:57,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12237 to 12235. [2024-11-08 16:07:57,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12235 states, 12234 states have (on average 1.5970246853032533) internal successors, (19538), 12234 states have internal predecessors, (19538), 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) [2024-11-08 16:07:57,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12235 states to 12235 states and 19538 transitions. [2024-11-08 16:07:57,436 INFO L78 Accepts]: Start accepts. Automaton has 12235 states and 19538 transitions. Word has length 73 [2024-11-08 16:07:57,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:57,436 INFO L471 AbstractCegarLoop]: Abstraction has 12235 states and 19538 transitions. [2024-11-08 16:07:57,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-11-08 16:07:57,437 INFO L276 IsEmpty]: Start isEmpty. Operand 12235 states and 19538 transitions. [2024-11-08 16:07:57,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 16:07:57,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:57,438 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:57,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 16:07:57,439 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:57,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:57,439 INFO L85 PathProgramCache]: Analyzing trace with hash -833180180, now seen corresponding path program 1 times [2024-11-08 16:07:57,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:57,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472899185] [2024-11-08 16:07:57,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:57,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:57,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:57,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:57,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472899185] [2024-11-08 16:07:57,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472899185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:57,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:57,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:07:57,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236397584] [2024-11-08 16:07:57,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:57,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:07:57,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:57,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:07:57,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:07:57,692 INFO L87 Difference]: Start difference. First operand 12235 states and 19538 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-08 16:07:57,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:57,837 INFO L93 Difference]: Finished difference Result 35013 states and 56062 transitions. [2024-11-08 16:07:57,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:07:57,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 76 [2024-11-08 16:07:57,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:57,883 INFO L225 Difference]: With dead ends: 35013 [2024-11-08 16:07:57,883 INFO L226 Difference]: Without dead ends: 22869 [2024-11-08 16:07:57,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:07:57,907 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 352 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:57,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 613 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:07:57,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22869 states. [2024-11-08 16:07:58,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22869 to 22867. [2024-11-08 16:07:58,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22867 states, 22866 states have (on average 1.585716784745911) internal successors, (36259), 22866 states have internal predecessors, (36259), 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) [2024-11-08 16:07:58,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22867 states to 22867 states and 36259 transitions. [2024-11-08 16:07:58,336 INFO L78 Accepts]: Start accepts. Automaton has 22867 states and 36259 transitions. Word has length 76 [2024-11-08 16:07:58,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:58,337 INFO L471 AbstractCegarLoop]: Abstraction has 22867 states and 36259 transitions. [2024-11-08 16:07:58,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-08 16:07:58,337 INFO L276 IsEmpty]: Start isEmpty. Operand 22867 states and 36259 transitions. [2024-11-08 16:07:58,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-08 16:07:58,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:58,338 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:58,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 16:07:58,338 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:58,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:58,339 INFO L85 PathProgramCache]: Analyzing trace with hash -60691096, now seen corresponding path program 1 times [2024-11-08 16:07:58,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:58,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824689009] [2024-11-08 16:07:58,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:58,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:58,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:58,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:58,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824689009] [2024-11-08 16:07:58,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824689009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:58,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:58,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:07:58,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537699280] [2024-11-08 16:07:58,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:58,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:07:58,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:58,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:07:58,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:07:58,863 INFO L87 Difference]: Start difference. First operand 22867 states and 36259 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2024-11-08 16:07:58,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:58,979 INFO L93 Difference]: Finished difference Result 23593 states and 37346 transitions. [2024-11-08 16:07:58,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:07:58,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 77 [2024-11-08 16:07:58,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:59,028 INFO L225 Difference]: With dead ends: 23593 [2024-11-08 16:07:59,029 INFO L226 Difference]: Without dead ends: 23591 [2024-11-08 16:07:59,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:07:59,041 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 0 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:59,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 867 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:07:59,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23591 states. [2024-11-08 16:07:59,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23591 to 23591. [2024-11-08 16:07:59,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23591 states, 23590 states have (on average 1.5673590504451038) internal successors, (36974), 23590 states have internal predecessors, (36974), 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) [2024-11-08 16:07:59,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23591 states to 23591 states and 36974 transitions. [2024-11-08 16:07:59,539 INFO L78 Accepts]: Start accepts. Automaton has 23591 states and 36974 transitions. Word has length 77 [2024-11-08 16:07:59,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:59,540 INFO L471 AbstractCegarLoop]: Abstraction has 23591 states and 36974 transitions. [2024-11-08 16:07:59,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2024-11-08 16:07:59,540 INFO L276 IsEmpty]: Start isEmpty. Operand 23591 states and 36974 transitions. [2024-11-08 16:07:59,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-08 16:07:59,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:59,542 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 16:07:59,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 16:07:59,543 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:59,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:59,543 INFO L85 PathProgramCache]: Analyzing trace with hash -713806321, now seen corresponding path program 1 times [2024-11-08 16:07:59,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:59,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808740965] [2024-11-08 16:07:59,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:59,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:59,668 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:07:59,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:59,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808740965] [2024-11-08 16:07:59,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808740965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:59,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:59,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:07:59,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963598640] [2024-11-08 16:07:59,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:59,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:07:59,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:59,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:07:59,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:07:59,670 INFO L87 Difference]: Start difference. First operand 23591 states and 36974 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-11-08 16:07:59,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:59,899 INFO L93 Difference]: Finished difference Result 54506 states and 85848 transitions. [2024-11-08 16:07:59,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:07:59,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 101 [2024-11-08 16:07:59,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:59,972 INFO L225 Difference]: With dead ends: 54506 [2024-11-08 16:07:59,973 INFO L226 Difference]: Without dead ends: 43144 [2024-11-08 16:08:00,001 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 [2024-11-08 16:08:00,002 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 110 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:08:00,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 404 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:08:00,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43144 states. [2024-11-08 16:08:00,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43144 to 43092. [2024-11-08 16:08:00,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43092 states, 43091 states have (on average 1.5705367710194704) internal successors, (67676), 43091 states have internal predecessors, (67676), 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) [2024-11-08 16:08:00,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43092 states to 43092 states and 67676 transitions. [2024-11-08 16:08:00,933 INFO L78 Accepts]: Start accepts. Automaton has 43092 states and 67676 transitions. Word has length 101 [2024-11-08 16:08:00,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:08:00,934 INFO L471 AbstractCegarLoop]: Abstraction has 43092 states and 67676 transitions. [2024-11-08 16:08:00,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-11-08 16:08:00,934 INFO L276 IsEmpty]: Start isEmpty. Operand 43092 states and 67676 transitions. [2024-11-08 16:08:00,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-08 16:08:00,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:08:00,939 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 16:08:00,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 16:08:00,939 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:08:00,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:08:00,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1943637733, now seen corresponding path program 1 times [2024-11-08 16:08:00,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:08:00,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797478237] [2024-11-08 16:08:00,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:08:00,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:08:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:08:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 16:08:01,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:08:01,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797478237] [2024-11-08 16:08:01,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797478237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:08:01,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:08:01,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:08:01,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844333953] [2024-11-08 16:08:01,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:08:01,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:08:01,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:08:01,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:08:01,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:08:01,189 INFO L87 Difference]: Start difference. First operand 43092 states and 67676 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2024-11-08 16:08:01,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:08:01,624 INFO L93 Difference]: Finished difference Result 105901 states and 166677 transitions. [2024-11-08 16:08:01,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:08:01,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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 101 [2024-11-08 16:08:01,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:08:01,819 INFO L225 Difference]: With dead ends: 105901 [2024-11-08 16:08:01,820 INFO L226 Difference]: Without dead ends: 85805 [2024-11-08 16:08:01,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:08:01,874 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 550 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:08:01,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 973 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:08:01,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85805 states. [2024-11-08 16:08:02,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85805 to 66703. [2024-11-08 16:08:02,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66703 states, 66702 states have (on average 1.5682138466612696) internal successors, (104603), 66702 states have internal predecessors, (104603), 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) [2024-11-08 16:08:03,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66703 states to 66703 states and 104603 transitions. [2024-11-08 16:08:03,211 INFO L78 Accepts]: Start accepts. Automaton has 66703 states and 104603 transitions. Word has length 101 [2024-11-08 16:08:03,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:08:03,212 INFO L471 AbstractCegarLoop]: Abstraction has 66703 states and 104603 transitions. [2024-11-08 16:08:03,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2024-11-08 16:08:03,212 INFO L276 IsEmpty]: Start isEmpty. Operand 66703 states and 104603 transitions. [2024-11-08 16:08:03,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-08 16:08:03,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:08:03,215 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 16:08:03,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 16:08:03,215 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:08:03,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:08:03,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1410355513, now seen corresponding path program 1 times [2024-11-08 16:08:03,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:08:03,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493334700] [2024-11-08 16:08:03,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:08:03,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:08:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:08:03,349 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 16:08:03,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:08:03,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493334700] [2024-11-08 16:08:03,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493334700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:08:03,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:08:03,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:08:03,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922255893] [2024-11-08 16:08:03,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:08:03,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:08:03,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:08:03,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:08:03,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:08:03,351 INFO L87 Difference]: Start difference. First operand 66703 states and 104603 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2024-11-08 16:08:03,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:08:03,896 INFO L93 Difference]: Finished difference Result 113881 states and 179249 transitions. [2024-11-08 16:08:03,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:08:03,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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 101 [2024-11-08 16:08:03,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:08:04,025 INFO L225 Difference]: With dead ends: 113881 [2024-11-08 16:08:04,025 INFO L226 Difference]: Without dead ends: 93785 [2024-11-08 16:08:04,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:08:04,059 INFO L432 NwaCegarLoop]: 352 mSDtfsCounter, 558 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:08:04,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 961 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:08:04,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93785 states. [2024-11-08 16:08:05,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93785 to 90203. [2024-11-08 16:08:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90203 states, 90202 states have (on average 1.568579410656083) internal successors, (141489), 90202 states have internal predecessors, (141489), 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) [2024-11-08 16:08:05,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90203 states to 90203 states and 141489 transitions. [2024-11-08 16:08:05,738 INFO L78 Accepts]: Start accepts. Automaton has 90203 states and 141489 transitions. Word has length 101 [2024-11-08 16:08:05,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:08:05,739 INFO L471 AbstractCegarLoop]: Abstraction has 90203 states and 141489 transitions. [2024-11-08 16:08:05,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2024-11-08 16:08:05,739 INFO L276 IsEmpty]: Start isEmpty. Operand 90203 states and 141489 transitions. [2024-11-08 16:08:05,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 16:08:05,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:08:05,742 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 16:08:05,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 16:08:05,742 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:08:05,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:08:05,742 INFO L85 PathProgramCache]: Analyzing trace with hash -366975703, now seen corresponding path program 1 times [2024-11-08 16:08:05,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:08:05,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951868835] [2024-11-08 16:08:05,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:08:05,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:08:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:08:05,857 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:08:05,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:08:05,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951868835] [2024-11-08 16:08:05,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951868835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:08:05,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:08:05,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:08:05,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170866883] [2024-11-08 16:08:05,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:08:05,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:08:05,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:08:05,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:08:05,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:08:05,860 INFO L87 Difference]: Start difference. First operand 90203 states and 141489 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2024-11-08 16:08:06,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:08:06,292 INFO L93 Difference]: Finished difference Result 146008 states and 229758 transitions. [2024-11-08 16:08:06,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:08:06,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 102 [2024-11-08 16:08:06,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:08:06,425 INFO L225 Difference]: With dead ends: 146008 [2024-11-08 16:08:06,425 INFO L226 Difference]: Without dead ends: 93993 [2024-11-08 16:08:06,489 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 [2024-11-08 16:08:06,489 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 241 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:08:06,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 767 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:08:06,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93993 states. [2024-11-08 16:08:07,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93993 to 63125. [2024-11-08 16:08:07,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63125 states, 63124 states have (on average 1.5641752740637476) internal successors, (98737), 63124 states have internal predecessors, (98737), 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) [2024-11-08 16:08:07,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63125 states to 63125 states and 98737 transitions. [2024-11-08 16:08:07,929 INFO L78 Accepts]: Start accepts. Automaton has 63125 states and 98737 transitions. Word has length 102 [2024-11-08 16:08:07,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:08:07,929 INFO L471 AbstractCegarLoop]: Abstraction has 63125 states and 98737 transitions. [2024-11-08 16:08:07,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2024-11-08 16:08:07,930 INFO L276 IsEmpty]: Start isEmpty. Operand 63125 states and 98737 transitions. [2024-11-08 16:08:07,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 16:08:07,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:08:07,932 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 16:08:07,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 16:08:07,932 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:08:07,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:08:07,933 INFO L85 PathProgramCache]: Analyzing trace with hash 921631357, now seen corresponding path program 1 times [2024-11-08 16:08:07,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:08:07,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82720387] [2024-11-08 16:08:07,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:08:07,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:08:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:08:08,013 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:08:08,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:08:08,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82720387] [2024-11-08 16:08:08,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82720387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:08:08,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:08:08,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:08:08,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663582564] [2024-11-08 16:08:08,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:08:08,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:08:08,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:08:08,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:08:08,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:08:08,016 INFO L87 Difference]: Start difference. First operand 63125 states and 98737 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-11-08 16:08:08,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:08:08,447 INFO L93 Difference]: Finished difference Result 185559 states and 289928 transitions. [2024-11-08 16:08:08,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:08:08,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 102 [2024-11-08 16:08:08,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:08:08,690 INFO L225 Difference]: With dead ends: 185559 [2024-11-08 16:08:08,690 INFO L226 Difference]: Without dead ends: 122525 [2024-11-08 16:08:08,778 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 [2024-11-08 16:08:08,779 INFO L432 NwaCegarLoop]: 327 mSDtfsCounter, 171 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:08:08,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 543 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:08:09,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122525 states. [2024-11-08 16:08:10,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122525 to 122523. [2024-11-08 16:08:10,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122523 states, 122522 states have (on average 1.552202869688709) internal successors, (190179), 122522 states have internal predecessors, (190179), 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) [2024-11-08 16:08:11,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122523 states to 122523 states and 190179 transitions. [2024-11-08 16:08:11,143 INFO L78 Accepts]: Start accepts. Automaton has 122523 states and 190179 transitions. Word has length 102 [2024-11-08 16:08:11,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:08:11,143 INFO L471 AbstractCegarLoop]: Abstraction has 122523 states and 190179 transitions. [2024-11-08 16:08:11,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-11-08 16:08:11,144 INFO L276 IsEmpty]: Start isEmpty. Operand 122523 states and 190179 transitions. [2024-11-08 16:08:11,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 16:08:11,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:08:11,148 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 16:08:11,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 16:08:11,148 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:08:11,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:08:11,149 INFO L85 PathProgramCache]: Analyzing trace with hash 449051975, now seen corresponding path program 1 times [2024-11-08 16:08:11,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:08:11,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437321642] [2024-11-08 16:08:11,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:08:11,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:08:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:08:11,228 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:08:11,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:08:11,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437321642] [2024-11-08 16:08:11,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437321642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:08:11,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:08:11,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:08:11,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439851100] [2024-11-08 16:08:11,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:08:11,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:08:11,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:08:11,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:08:11,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:08:11,231 INFO L87 Difference]: Start difference. First operand 122523 states and 190179 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-11-08 16:08:12,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:08:12,832 INFO L93 Difference]: Finished difference Result 359965 states and 558013 transitions. [2024-11-08 16:08:12,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:08:12,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 102 [2024-11-08 16:08:12,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:08:13,266 INFO L225 Difference]: With dead ends: 359965 [2024-11-08 16:08:13,266 INFO L226 Difference]: Without dead ends: 237583 [2024-11-08 16:08:13,364 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 [2024-11-08 16:08:13,365 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 152 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:08:13,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 507 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:08:13,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237583 states. [2024-11-08 16:08:16,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237583 to 237581. [2024-11-08 16:08:17,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237581 states, 237580 states have (on average 1.5394603922889132) internal successors, (365745), 237580 states have internal predecessors, (365745), 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) [2024-11-08 16:08:17,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237581 states to 237581 states and 365745 transitions. [2024-11-08 16:08:17,537 INFO L78 Accepts]: Start accepts. Automaton has 237581 states and 365745 transitions. Word has length 102 [2024-11-08 16:08:17,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:08:17,537 INFO L471 AbstractCegarLoop]: Abstraction has 237581 states and 365745 transitions. [2024-11-08 16:08:17,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-11-08 16:08:17,538 INFO L276 IsEmpty]: Start isEmpty. Operand 237581 states and 365745 transitions. [2024-11-08 16:08:17,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 16:08:17,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:08:17,545 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 16:08:17,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 16:08:17,546 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:08:17,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:08:17,547 INFO L85 PathProgramCache]: Analyzing trace with hash -542283200, now seen corresponding path program 1 times [2024-11-08 16:08:17,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:08:17,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517387490] [2024-11-08 16:08:17,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:08:17,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:08:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:08:17,620 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 16:08:17,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:08:17,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517387490] [2024-11-08 16:08:17,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517387490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:08:17,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:08:17,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:08:17,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642301289] [2024-11-08 16:08:17,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:08:17,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:08:17,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:08:17,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:08:17,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:08:17,623 INFO L87 Difference]: Start difference. First operand 237581 states and 365745 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2024-11-08 16:08:19,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:08:19,898 INFO L93 Difference]: Finished difference Result 577047 states and 892021 transitions. [2024-11-08 16:08:19,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:08:19,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 103 [2024-11-08 16:08:19,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:08:21,344 INFO L225 Difference]: With dead ends: 577047 [2024-11-08 16:08:21,344 INFO L226 Difference]: Without dead ends: 339741 [2024-11-08 16:08:21,565 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 [2024-11-08 16:08:21,566 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 131 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:08:21,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 429 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:08:21,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339741 states. [2024-11-08 16:08:25,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339741 to 330199. [2024-11-08 16:08:25,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330199 states, 330198 states have (on average 1.53116917728151) internal successors, (505589), 330198 states have internal predecessors, (505589), 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) [2024-11-08 16:08:27,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330199 states to 330199 states and 505589 transitions. [2024-11-08 16:08:27,474 INFO L78 Accepts]: Start accepts. Automaton has 330199 states and 505589 transitions. Word has length 103 [2024-11-08 16:08:27,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:08:27,474 INFO L471 AbstractCegarLoop]: Abstraction has 330199 states and 505589 transitions. [2024-11-08 16:08:27,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2024-11-08 16:08:27,475 INFO L276 IsEmpty]: Start isEmpty. Operand 330199 states and 505589 transitions. [2024-11-08 16:08:27,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 16:08:27,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:08:27,492 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 16:08:27,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-08 16:08:27,493 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:08:27,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:08:27,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1444011090, now seen corresponding path program 1 times [2024-11-08 16:08:27,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:08:27,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535804300] [2024-11-08 16:08:27,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:08:27,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:08:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:08:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:08:27,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:08:27,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535804300] [2024-11-08 16:08:27,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535804300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:08:27,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:08:27,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:08:27,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123937289] [2024-11-08 16:08:27,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:08:27,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:08:27,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:08:27,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:08:27,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:08:27,611 INFO L87 Difference]: Start difference. First operand 330199 states and 505589 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2024-11-08 16:08:31,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:08:31,219 INFO L93 Difference]: Finished difference Result 802183 states and 1233511 transitions. [2024-11-08 16:08:31,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:08:31,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 103 [2024-11-08 16:08:31,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:08:32,304 INFO L225 Difference]: With dead ends: 802183 [2024-11-08 16:08:32,305 INFO L226 Difference]: Without dead ends: 472283 [2024-11-08 16:08:32,534 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 [2024-11-08 16:08:32,534 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 125 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:08:32,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 428 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:08:32,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472283 states.