./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label28.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem12_label28.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 659b37265952a16fb6d0be01d182392fcf6fa60a0b92fef60d1f2fbbad338d83 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:26:59,720 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:26:59,819 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:26:59,825 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:26:59,826 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:26:59,860 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:26:59,860 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:26:59,861 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:26:59,862 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:26:59,863 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:26:59,863 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:26:59,864 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:26:59,864 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:26:59,865 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:26:59,867 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:26:59,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:26:59,868 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:26:59,868 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:26:59,868 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:26:59,872 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:26:59,872 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:26:59,873 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:26:59,873 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:26:59,873 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:26:59,874 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:26:59,874 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:26:59,874 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:26:59,874 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:26:59,875 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:26:59,875 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:26:59,875 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:26:59,875 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:26:59,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:26:59,876 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:26:59,877 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:26:59,878 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:26:59,878 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:26:59,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:26:59,879 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:26:59,879 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:26:59,880 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:26:59,880 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:26:59,880 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 659b37265952a16fb6d0be01d182392fcf6fa60a0b92fef60d1f2fbbad338d83 [2024-11-09 19:27:00,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:27:00,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:27:00,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:27:00,154 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:27:00,154 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:27:00,155 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label28.c [2024-11-09 19:27:01,597 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:27:02,011 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:27:02,014 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label28.c [2024-11-09 19:27:02,055 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/903cd1af3/ff01ef53997a429291583b2fdb8f6625/FLAGee4c768be [2024-11-09 19:27:02,171 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/903cd1af3/ff01ef53997a429291583b2fdb8f6625 [2024-11-09 19:27:02,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:27:02,175 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:27:02,176 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:27:02,176 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:27:02,180 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:27:02,181 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:27:02" (1/1) ... [2024-11-09 19:27:02,182 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d97213a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:02, skipping insertion in model container [2024-11-09 19:27:02,182 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:27:02" (1/1) ... [2024-11-09 19:27:02,294 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:27:02,568 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label28.c[2824,2837] [2024-11-09 19:27:03,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:27:03,313 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:27:03,331 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label28.c[2824,2837] [2024-11-09 19:27:03,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:27:03,744 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:27:03,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:03 WrapperNode [2024-11-09 19:27:03,745 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:27:03,746 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:27:03,746 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:27:03,746 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:27:03,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:03" (1/1) ... [2024-11-09 19:27:03,802 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:03" (1/1) ... [2024-11-09 19:27:04,048 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4760 [2024-11-09 19:27:04,048 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:27:04,049 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:27:04,049 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:27:04,049 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:27:04,060 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:03" (1/1) ... [2024-11-09 19:27:04,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:03" (1/1) ... [2024-11-09 19:27:04,100 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:03" (1/1) ... [2024-11-09 19:27:04,342 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]. [2024-11-09 19:27:04,343 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:03" (1/1) ... [2024-11-09 19:27:04,343 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:03" (1/1) ... [2024-11-09 19:27:04,466 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:03" (1/1) ... [2024-11-09 19:27:04,484 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:03" (1/1) ... [2024-11-09 19:27:04,504 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:03" (1/1) ... [2024-11-09 19:27:04,519 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:03" (1/1) ... [2024-11-09 19:27:04,606 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:27:04,607 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:27:04,607 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:27:04,607 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:27:04,608 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:03" (1/1) ... [2024-11-09 19:27:04,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:27:04,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:27:04,659 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) [2024-11-09 19:27:04,671 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 [2024-11-09 19:27:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:27:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:27:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:27:04,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:27:04,815 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:27:04,817 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:27:09,950 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L4665: havoc calculate_output3_#t~ret11#1; [2024-11-09 19:27:09,951 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1696: havoc calculate_output_#t~ret9#1; [2024-11-09 19:27:09,952 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L3175: havoc calculate_output2_#t~ret10#1; [2024-11-09 19:27:10,266 INFO L? ?]: Removed 2039 outVars from TransFormulas that were not future-live. [2024-11-09 19:27:10,267 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:27:10,307 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:27:10,308 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:27:10,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:27:10 BoogieIcfgContainer [2024-11-09 19:27:10,308 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:27:10,310 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:27:10,310 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:27:10,313 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:27:10,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:27:02" (1/3) ... [2024-11-09 19:27:10,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105ecc92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:27:10, skipping insertion in model container [2024-11-09 19:27:10,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:03" (2/3) ... [2024-11-09 19:27:10,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105ecc92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:27:10, skipping insertion in model container [2024-11-09 19:27:10,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:27:10" (3/3) ... [2024-11-09 19:27:10,316 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label28.c [2024-11-09 19:27:10,331 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:27:10,331 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:27:10,422 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:27:10,429 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;@4fef13a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:27:10,430 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:27:10,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 821 states, 819 states have (on average 2.744810744810745) internal successors, (2248), 820 states have internal predecessors, (2248), 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) [2024-11-09 19:27:10,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 19:27:10,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:10,448 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] [2024-11-09 19:27:10,449 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:10,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:10,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1760467165, now seen corresponding path program 1 times [2024-11-09 19:27:10,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:10,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225436831] [2024-11-09 19:27:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:10,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:10,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:27:10,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:10,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225436831] [2024-11-09 19:27:10,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225436831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:10,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:27:10,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:27:10,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312806590] [2024-11-09 19:27:10,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:10,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:27:10,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:10,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:27:10,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:27:10,784 INFO L87 Difference]: Start difference. First operand has 821 states, 819 states have (on average 2.744810744810745) internal successors, (2248), 820 states have internal predecessors, (2248), 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 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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) [2024-11-09 19:27:15,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:15,469 INFO L93 Difference]: Finished difference Result 2410 states and 6691 transitions. [2024-11-09 19:27:15,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:27:15,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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 22 [2024-11-09 19:27:15,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:15,501 INFO L225 Difference]: With dead ends: 2410 [2024-11-09 19:27:15,501 INFO L226 Difference]: Without dead ends: 1509 [2024-11-09 19:27:15,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:27:15,517 INFO L432 NwaCegarLoop]: 517 mSDtfsCounter, 1480 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 3697 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 4393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 3697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:15,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 529 Invalid, 4393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 3697 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-09 19:27:15,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2024-11-09 19:27:15,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1509. [2024-11-09 19:27:15,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1508 states have (on average 2.5072944297082227) internal successors, (3781), 1508 states have internal predecessors, (3781), 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) [2024-11-09 19:27:15,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 3781 transitions. [2024-11-09 19:27:15,640 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 3781 transitions. Word has length 22 [2024-11-09 19:27:15,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:15,641 INFO L471 AbstractCegarLoop]: Abstraction has 1509 states and 3781 transitions. [2024-11-09 19:27:15,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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) [2024-11-09 19:27:15,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 3781 transitions. [2024-11-09 19:27:15,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-09 19:27:15,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:15,646 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:27:15,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:27:15,647 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:15,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:15,648 INFO L85 PathProgramCache]: Analyzing trace with hash -109381771, now seen corresponding path program 1 times [2024-11-09 19:27:15,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:15,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083328809] [2024-11-09 19:27:15,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:15,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:27:16,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:16,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083328809] [2024-11-09 19:27:16,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083328809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:16,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:27:16,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:27:16,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314207948] [2024-11-09 19:27:16,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:16,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 19:27:16,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:16,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 19:27:16,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:27:16,245 INFO L87 Difference]: Start difference. First operand 1509 states and 3781 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-11-09 19:27:21,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:21,144 INFO L93 Difference]: Finished difference Result 3768 states and 9220 transitions. [2024-11-09 19:27:21,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:27:21,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 98 [2024-11-09 19:27:21,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:21,155 INFO L225 Difference]: With dead ends: 3768 [2024-11-09 19:27:21,155 INFO L226 Difference]: Without dead ends: 2261 [2024-11-09 19:27:21,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:27:21,160 INFO L432 NwaCegarLoop]: 693 mSDtfsCounter, 2938 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 5192 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2938 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 5413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 5192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:21,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2938 Valid, 1175 Invalid, 5413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 5192 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-09 19:27:21,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2024-11-09 19:27:21,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2261. [2024-11-09 19:27:21,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 2260 states have (on average 2.3092920353982302) internal successors, (5219), 2260 states have internal predecessors, (5219), 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) [2024-11-09 19:27:21,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 5219 transitions. [2024-11-09 19:27:21,203 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 5219 transitions. Word has length 98 [2024-11-09 19:27:21,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:21,204 INFO L471 AbstractCegarLoop]: Abstraction has 2261 states and 5219 transitions. [2024-11-09 19:27:21,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-11-09 19:27:21,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 5219 transitions. [2024-11-09 19:27:21,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-09 19:27:21,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:21,212 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:27:21,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:27:21,214 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:21,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:21,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1479803281, now seen corresponding path program 1 times [2024-11-09 19:27:21,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:21,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143318843] [2024-11-09 19:27:21,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:21,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:21,621 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:27:21,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:21,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143318843] [2024-11-09 19:27:21,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143318843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:27:21,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591669271] [2024-11-09 19:27:21,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:21,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:27:21,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:27:21,624 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:27:21,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:27:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:21,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:27:21,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:27:21,978 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 19:27:21,979 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:27:21,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591669271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:21,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:27:21,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-09 19:27:21,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461528552] [2024-11-09 19:27:21,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:21,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:27:21,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:21,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:27:21,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:27:21,983 INFO L87 Difference]: Start difference. First operand 2261 states and 5219 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 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) [2024-11-09 19:27:25,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:25,552 INFO L93 Difference]: Finished difference Result 5272 states and 12775 transitions. [2024-11-09 19:27:25,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:27:25,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 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 164 [2024-11-09 19:27:25,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:25,570 INFO L225 Difference]: With dead ends: 5272 [2024-11-09 19:27:25,571 INFO L226 Difference]: Without dead ends: 3765 [2024-11-09 19:27:25,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:27:25,576 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 1380 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 3827 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 4466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 3827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:25,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 305 Invalid, 4466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 3827 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 19:27:25,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2024-11-09 19:27:25,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3765. [2024-11-09 19:27:25,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3765 states, 3764 states have (on average 2.3546758767268865) internal successors, (8863), 3764 states have internal predecessors, (8863), 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) [2024-11-09 19:27:25,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3765 states to 3765 states and 8863 transitions. [2024-11-09 19:27:25,652 INFO L78 Accepts]: Start accepts. Automaton has 3765 states and 8863 transitions. Word has length 164 [2024-11-09 19:27:25,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:25,653 INFO L471 AbstractCegarLoop]: Abstraction has 3765 states and 8863 transitions. [2024-11-09 19:27:25,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 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) [2024-11-09 19:27:25,654 INFO L276 IsEmpty]: Start isEmpty. Operand 3765 states and 8863 transitions. [2024-11-09 19:27:25,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-09 19:27:25,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:25,662 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:27:25,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 19:27:25,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:27:25,864 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:25,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:25,864 INFO L85 PathProgramCache]: Analyzing trace with hash 223429517, now seen corresponding path program 1 times [2024-11-09 19:27:25,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:25,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298079532] [2024-11-09 19:27:25,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:25,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:26,190 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:27:26,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:26,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298079532] [2024-11-09 19:27:26,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298079532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:26,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:27:26,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:27:26,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322796203] [2024-11-09 19:27:26,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:26,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:27:26,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:26,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:27:26,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:27:26,194 INFO L87 Difference]: Start difference. First operand 3765 states and 8863 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 3 states have internal predecessors, (172), 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) [2024-11-09 19:27:30,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:30,779 INFO L93 Difference]: Finished difference Result 8318 states and 19608 transitions. [2024-11-09 19:27:30,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:27:30,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 3 states have internal predecessors, (172), 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 172 [2024-11-09 19:27:30,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:30,801 INFO L225 Difference]: With dead ends: 8318 [2024-11-09 19:27:30,802 INFO L226 Difference]: Without dead ends: 5269 [2024-11-09 19:27:30,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:27:30,807 INFO L432 NwaCegarLoop]: 697 mSDtfsCounter, 1368 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5844 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 6051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 5844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:30,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 719 Invalid, 6051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 5844 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-09 19:27:30,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5269 states. [2024-11-09 19:27:30,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5269 to 4517. [2024-11-09 19:27:30,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4517 states, 4516 states have (on average 2.2779007971656333) internal successors, (10287), 4516 states have internal predecessors, (10287), 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) [2024-11-09 19:27:30,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 10287 transitions. [2024-11-09 19:27:30,917 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 10287 transitions. Word has length 172 [2024-11-09 19:27:30,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:30,917 INFO L471 AbstractCegarLoop]: Abstraction has 4517 states and 10287 transitions. [2024-11-09 19:27:30,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 3 states have internal predecessors, (172), 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) [2024-11-09 19:27:30,918 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 10287 transitions. [2024-11-09 19:27:30,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-09 19:27:30,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:30,923 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:27:30,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:27:30,924 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:30,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:30,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1004796269, now seen corresponding path program 1 times [2024-11-09 19:27:30,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:30,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935618936] [2024-11-09 19:27:30,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:30,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:31,313 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 37 proven. 55 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 19:27:31,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:31,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935618936] [2024-11-09 19:27:31,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935618936] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:27:31,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539096823] [2024-11-09 19:27:31,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:31,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:27:31,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:27:31,317 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:27:31,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:27:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:31,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:27:31,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:27:31,503 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-09 19:27:31,503 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:27:31,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539096823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:31,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:27:31,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 19:27:31,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916839911] [2024-11-09 19:27:31,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:31,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:27:31,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:31,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:27:31,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:27:31,505 INFO L87 Difference]: Start difference. First operand 4517 states and 10287 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2024-11-09 19:27:35,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:35,128 INFO L93 Difference]: Finished difference Result 12040 states and 27981 transitions. [2024-11-09 19:27:35,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:27:35,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 234 [2024-11-09 19:27:35,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:35,160 INFO L225 Difference]: With dead ends: 12040 [2024-11-09 19:27:35,160 INFO L226 Difference]: Without dead ends: 8277 [2024-11-09 19:27:35,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:27:35,167 INFO L432 NwaCegarLoop]: 566 mSDtfsCounter, 1420 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 3723 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 4319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 3723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:35,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1420 Valid, 575 Invalid, 4319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 3723 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 19:27:35,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8277 states. [2024-11-09 19:27:35,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8277 to 8277. [2024-11-09 19:27:35,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8277 states, 8276 states have (on average 2.293499275012083) internal successors, (18981), 8276 states have internal predecessors, (18981), 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) [2024-11-09 19:27:35,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 18981 transitions. [2024-11-09 19:27:35,332 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 18981 transitions. Word has length 234 [2024-11-09 19:27:35,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:35,334 INFO L471 AbstractCegarLoop]: Abstraction has 8277 states and 18981 transitions. [2024-11-09 19:27:35,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2024-11-09 19:27:35,334 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 18981 transitions. [2024-11-09 19:27:35,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-09 19:27:35,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:35,338 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:27:35,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 19:27:35,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:27:35,542 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:35,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:35,542 INFO L85 PathProgramCache]: Analyzing trace with hash 2037057915, now seen corresponding path program 1 times [2024-11-09 19:27:35,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:35,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015046992] [2024-11-09 19:27:35,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:35,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:35,872 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 37 proven. 55 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 19:27:35,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:35,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015046992] [2024-11-09 19:27:35,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015046992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:27:35,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981781301] [2024-11-09 19:27:35,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:35,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:27:35,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:27:35,876 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:27:35,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 19:27:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:36,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:27:36,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:27:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:27:36,121 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:27:36,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981781301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:36,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:27:36,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 19:27:36,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102038176] [2024-11-09 19:27:36,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:36,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:27:36,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:36,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:27:36,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:27:36,125 INFO L87 Difference]: Start difference. First operand 8277 states and 18981 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:39,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:39,957 INFO L93 Difference]: Finished difference Result 21816 states and 51039 transitions. [2024-11-09 19:27:39,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:27:39,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2024-11-09 19:27:39,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:39,995 INFO L225 Difference]: With dead ends: 21816 [2024-11-09 19:27:39,995 INFO L226 Difference]: Without dead ends: 14293 [2024-11-09 19:27:40,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:27:40,009 INFO L432 NwaCegarLoop]: 306 mSDtfsCounter, 1593 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3432 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 4135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 3432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:40,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 313 Invalid, 4135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 3432 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-09 19:27:40,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14293 states. [2024-11-09 19:27:40,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14293 to 12037. [2024-11-09 19:27:40,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12037 states, 12036 states have (on average 2.2741774675972084) internal successors, (27372), 12036 states have internal predecessors, (27372), 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) [2024-11-09 19:27:40,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 27372 transitions. [2024-11-09 19:27:40,367 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 27372 transitions. Word has length 242 [2024-11-09 19:27:40,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:40,368 INFO L471 AbstractCegarLoop]: Abstraction has 12037 states and 27372 transitions. [2024-11-09 19:27:40,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:40,369 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 27372 transitions. [2024-11-09 19:27:40,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-11-09 19:27:40,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:40,374 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:27:40,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 19:27:40,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:27:40,578 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:40,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:40,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1836260705, now seen corresponding path program 1 times [2024-11-09 19:27:40,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:40,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118069256] [2024-11-09 19:27:40,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:40,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:40,951 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 184 proven. 55 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-09 19:27:40,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:40,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118069256] [2024-11-09 19:27:40,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118069256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:27:40,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941879253] [2024-11-09 19:27:40,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:40,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:27:40,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:27:40,954 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:27:40,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 19:27:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:41,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:27:41,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:27:41,156 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-09 19:27:41,157 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:27:41,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941879253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:41,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:27:41,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 19:27:41,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248806680] [2024-11-09 19:27:41,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:41,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:27:41,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:41,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:27:41,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:27:41,159 INFO L87 Difference]: Start difference. First operand 12037 states and 27372 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2024-11-09 19:27:45,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:45,051 INFO L93 Difference]: Finished difference Result 24072 states and 55239 transitions. [2024-11-09 19:27:45,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:27:45,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 312 [2024-11-09 19:27:45,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:45,082 INFO L225 Difference]: With dead ends: 24072 [2024-11-09 19:27:45,082 INFO L226 Difference]: Without dead ends: 12789 [2024-11-09 19:27:45,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:27:45,094 INFO L432 NwaCegarLoop]: 1792 mSDtfsCounter, 1534 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3558 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 4102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 3558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:45,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 1802 Invalid, 4102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 3558 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-09 19:27:45,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12789 states. [2024-11-09 19:27:45,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12789 to 12789. [2024-11-09 19:27:45,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12789 states, 12788 states have (on average 2.1536596809508914) internal successors, (27541), 12788 states have internal predecessors, (27541), 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) [2024-11-09 19:27:45,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12789 states to 12789 states and 27541 transitions. [2024-11-09 19:27:45,287 INFO L78 Accepts]: Start accepts. Automaton has 12789 states and 27541 transitions. Word has length 312 [2024-11-09 19:27:45,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:45,288 INFO L471 AbstractCegarLoop]: Abstraction has 12789 states and 27541 transitions. [2024-11-09 19:27:45,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2024-11-09 19:27:45,289 INFO L276 IsEmpty]: Start isEmpty. Operand 12789 states and 27541 transitions. [2024-11-09 19:27:45,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2024-11-09 19:27:45,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:45,301 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:27:45,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 19:27:45,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:27:45,502 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:45,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:45,502 INFO L85 PathProgramCache]: Analyzing trace with hash 709385293, now seen corresponding path program 1 times [2024-11-09 19:27:45,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:45,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523570327] [2024-11-09 19:27:45,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:45,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:46,067 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 248 proven. 55 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-09 19:27:46,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:46,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523570327] [2024-11-09 19:27:46,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523570327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:27:46,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139729883] [2024-11-09 19:27:46,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:46,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:27:46,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:27:46,073 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:27:46,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 19:27:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:46,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:27:46,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:27:46,544 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-09 19:27:46,544 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:27:46,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139729883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:46,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:27:46,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-09 19:27:46,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607782614] [2024-11-09 19:27:46,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:46,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:27:46,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:46,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:27:46,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:27:46,548 INFO L87 Difference]: Start difference. First operand 12789 states and 27541 transitions. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 2 states have internal predecessors, (360), 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) [2024-11-09 19:27:50,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:50,054 INFO L93 Difference]: Finished difference Result 32344 states and 69534 transitions. [2024-11-09 19:27:50,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:27:50,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 2 states have internal predecessors, (360), 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 446 [2024-11-09 19:27:50,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:50,089 INFO L225 Difference]: With dead ends: 32344 [2024-11-09 19:27:50,090 INFO L226 Difference]: Without dead ends: 20309 [2024-11-09 19:27:50,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:27:50,106 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 1378 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3333 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 4131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 3333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:50,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1378 Valid, 430 Invalid, 4131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 3333 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-09 19:27:50,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20309 states. [2024-11-09 19:27:50,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20309 to 15797. [2024-11-09 19:27:50,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15797 states, 15796 states have (on average 2.078500886300329) internal successors, (32832), 15796 states have internal predecessors, (32832), 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) [2024-11-09 19:27:50,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15797 states to 15797 states and 32832 transitions. [2024-11-09 19:27:50,455 INFO L78 Accepts]: Start accepts. Automaton has 15797 states and 32832 transitions. Word has length 446 [2024-11-09 19:27:50,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:50,455 INFO L471 AbstractCegarLoop]: Abstraction has 15797 states and 32832 transitions. [2024-11-09 19:27:50,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 2 states have internal predecessors, (360), 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) [2024-11-09 19:27:50,456 INFO L276 IsEmpty]: Start isEmpty. Operand 15797 states and 32832 transitions. [2024-11-09 19:27:50,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2024-11-09 19:27:50,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:50,469 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:27:50,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 19:27:50,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:27:50,674 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:50,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:50,675 INFO L85 PathProgramCache]: Analyzing trace with hash 527049025, now seen corresponding path program 1 times [2024-11-09 19:27:50,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:50,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412102169] [2024-11-09 19:27:50,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:50,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:50,923 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-09 19:27:50,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:50,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412102169] [2024-11-09 19:27:50,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412102169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:50,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:27:50,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:27:50,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640604705] [2024-11-09 19:27:50,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:50,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:27:50,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:50,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:27:50,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:27:50,926 INFO L87 Difference]: Start difference. First operand 15797 states and 32832 transitions. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 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) [2024-11-09 19:27:54,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:54,814 INFO L93 Difference]: Finished difference Result 35352 states and 73079 transitions. [2024-11-09 19:27:54,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:27:54,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 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 532 [2024-11-09 19:27:54,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:54,847 INFO L225 Difference]: With dead ends: 35352 [2024-11-09 19:27:54,847 INFO L226 Difference]: Without dead ends: 20309 [2024-11-09 19:27:54,858 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 [2024-11-09 19:27:54,860 INFO L432 NwaCegarLoop]: 2009 mSDtfsCounter, 1364 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 4057 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 4407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 4057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:54,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1364 Valid, 2017 Invalid, 4407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 4057 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-09 19:27:54,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20309 states. [2024-11-09 19:27:55,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20309 to 18805. [2024-11-09 19:27:55,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18805 states, 18804 states have (on average 2.04211869814933) internal successors, (38400), 18804 states have internal predecessors, (38400), 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) [2024-11-09 19:27:55,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18805 states to 18805 states and 38400 transitions. [2024-11-09 19:27:55,113 INFO L78 Accepts]: Start accepts. Automaton has 18805 states and 38400 transitions. Word has length 532 [2024-11-09 19:27:55,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:55,114 INFO L471 AbstractCegarLoop]: Abstraction has 18805 states and 38400 transitions. [2024-11-09 19:27:55,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 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) [2024-11-09 19:27:55,114 INFO L276 IsEmpty]: Start isEmpty. Operand 18805 states and 38400 transitions. [2024-11-09 19:27:55,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-11-09 19:27:55,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:55,126 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:27:55,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:27:55,126 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:55,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:55,127 INFO L85 PathProgramCache]: Analyzing trace with hash -439877451, now seen corresponding path program 1 times [2024-11-09 19:27:55,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:55,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570098780] [2024-11-09 19:27:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:55,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 496 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-09 19:27:55,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:55,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570098780] [2024-11-09 19:27:55,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570098780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:55,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:27:55,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:27:55,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526395361] [2024-11-09 19:27:55,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:55,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:27:55,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:55,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:27:55,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:27:55,631 INFO L87 Difference]: Start difference. First operand 18805 states and 38400 transitions. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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) [2024-11-09 19:27:59,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:59,599 INFO L93 Difference]: Finished difference Result 45128 states and 92565 transitions. [2024-11-09 19:27:59,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:27:59,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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 536 [2024-11-09 19:27:59,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:59,637 INFO L225 Difference]: With dead ends: 45128 [2024-11-09 19:27:59,637 INFO L226 Difference]: Without dead ends: 27077 [2024-11-09 19:27:59,655 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 [2024-11-09 19:27:59,656 INFO L432 NwaCegarLoop]: 387 mSDtfsCounter, 1416 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3604 mSolverCounterSat, 716 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 4320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 716 IncrementalHoareTripleChecker+Valid, 3604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:59,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1416 Valid, 394 Invalid, 4320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [716 Valid, 3604 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-09 19:27:59,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27077 states. [2024-11-09 19:27:59,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27077 to 27077. [2024-11-09 19:27:59,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27077 states, 27076 states have (on average 2.0244496971487664) internal successors, (54814), 27076 states have internal predecessors, (54814), 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) [2024-11-09 19:28:00,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27077 states to 27077 states and 54814 transitions. [2024-11-09 19:28:00,040 INFO L78 Accepts]: Start accepts. Automaton has 27077 states and 54814 transitions. Word has length 536 [2024-11-09 19:28:00,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:28:00,040 INFO L471 AbstractCegarLoop]: Abstraction has 27077 states and 54814 transitions. [2024-11-09 19:28:00,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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) [2024-11-09 19:28:00,041 INFO L276 IsEmpty]: Start isEmpty. Operand 27077 states and 54814 transitions. [2024-11-09 19:28:00,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2024-11-09 19:28:00,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:28:00,058 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:28:00,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:28:00,059 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:28:00,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:28:00,059 INFO L85 PathProgramCache]: Analyzing trace with hash -813652511, now seen corresponding path program 1 times [2024-11-09 19:28:00,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:28:00,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702106151] [2024-11-09 19:28:00,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:28:00,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:28:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:28:00,705 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 385 proven. 110 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-09 19:28:00,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:28:00,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702106151] [2024-11-09 19:28:00,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702106151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:28:00,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569783035] [2024-11-09 19:28:00,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:28:00,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:28:00,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:28:00,708 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:28:00,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 19:28:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:28:00,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:28:00,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:28:00,998 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 524 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-09 19:28:00,998 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:28:00,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569783035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:28:00,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:28:00,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 19:28:00,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609679942] [2024-11-09 19:28:00,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:28:01,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:28:01,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:28:01,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:28:01,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:28:01,002 INFO L87 Difference]: Start difference. First operand 27077 states and 54814 transitions. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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) [2024-11-09 19:28:04,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:28:04,633 INFO L93 Difference]: Finished difference Result 64680 states and 131809 transitions. [2024-11-09 19:28:04,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:28:04,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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 564 [2024-11-09 19:28:04,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:28:04,679 INFO L225 Difference]: With dead ends: 64680 [2024-11-09 19:28:04,679 INFO L226 Difference]: Without dead ends: 38357 [2024-11-09 19:28:04,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:28:04,691 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 1473 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3435 mSolverCounterSat, 834 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 4269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 834 IncrementalHoareTripleChecker+Valid, 3435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:28:04,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 241 Invalid, 4269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [834 Valid, 3435 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-09 19:28:04,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38357 states. [2024-11-09 19:28:05,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38357 to 38357. [2024-11-09 19:28:05,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38357 states, 38356 states have (on average 2.018823652101366) internal successors, (77434), 38356 states have internal predecessors, (77434), 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) [2024-11-09 19:28:05,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38357 states to 38357 states and 77434 transitions. [2024-11-09 19:28:05,186 INFO L78 Accepts]: Start accepts. Automaton has 38357 states and 77434 transitions. Word has length 564 [2024-11-09 19:28:05,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:28:05,187 INFO L471 AbstractCegarLoop]: Abstraction has 38357 states and 77434 transitions. [2024-11-09 19:28:05,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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) [2024-11-09 19:28:05,187 INFO L276 IsEmpty]: Start isEmpty. Operand 38357 states and 77434 transitions. [2024-11-09 19:28:05,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2024-11-09 19:28:05,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:28:05,206 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:28:05,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 19:28:05,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:28:05,407 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:28:05,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:28:05,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1388770389, now seen corresponding path program 1 times [2024-11-09 19:28:05,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:28:05,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723296394] [2024-11-09 19:28:05,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:28:05,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:28:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:28:05,787 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 408 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-09 19:28:05,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:28:05,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723296394] [2024-11-09 19:28:05,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723296394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:28:05,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:28:05,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:28:05,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427159022] [2024-11-09 19:28:05,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:28:05,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:28:05,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:28:05,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:28:05,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:28:05,790 INFO L87 Difference]: Start difference. First operand 38357 states and 77434 transitions. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2024-11-09 19:28:09,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:28:09,708 INFO L93 Difference]: Finished difference Result 105288 states and 212551 transitions. [2024-11-09 19:28:09,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:28:09,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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 568 [2024-11-09 19:28:09,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:28:09,822 INFO L225 Difference]: With dead ends: 105288 [2024-11-09 19:28:09,822 INFO L226 Difference]: Without dead ends: 63173 [2024-11-09 19:28:09,861 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 [2024-11-09 19:28:09,862 INFO L432 NwaCegarLoop]: 1990 mSDtfsCounter, 1260 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3594 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 4183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 3594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:28:09,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1260 Valid, 2000 Invalid, 4183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 3594 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 19:28:09,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63173 states. [2024-11-09 19:28:10,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63173 to 63173. [2024-11-09 19:28:10,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63173 states, 63172 states have (on average 1.990327993414804) internal successors, (125733), 63172 states have internal predecessors, (125733), 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) [2024-11-09 19:28:11,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63173 states to 63173 states and 125733 transitions. [2024-11-09 19:28:11,197 INFO L78 Accepts]: Start accepts. Automaton has 63173 states and 125733 transitions. Word has length 568 [2024-11-09 19:28:11,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:28:11,198 INFO L471 AbstractCegarLoop]: Abstraction has 63173 states and 125733 transitions. [2024-11-09 19:28:11,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2024-11-09 19:28:11,198 INFO L276 IsEmpty]: Start isEmpty. Operand 63173 states and 125733 transitions. [2024-11-09 19:28:11,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2024-11-09 19:28:11,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:28:11,242 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:28:11,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 19:28:11,243 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:28:11,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:28:11,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1251587869, now seen corresponding path program 1 times [2024-11-09 19:28:11,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:28:11,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136405482] [2024-11-09 19:28:11,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:28:11,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:28:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:28:11,748 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 623 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-09 19:28:11,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:28:11,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136405482] [2024-11-09 19:28:11,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136405482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:28:11,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:28:11,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:28:11,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340788307] [2024-11-09 19:28:11,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:28:11,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:28:11,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:28:11,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:28:11,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:28:11,752 INFO L87 Difference]: Start difference. First operand 63173 states and 125733 transitions. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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) [2024-11-09 19:28:15,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:28:15,710 INFO L93 Difference]: Finished difference Result 140632 states and 280589 transitions. [2024-11-09 19:28:15,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:28:15,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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 650 [2024-11-09 19:28:15,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:28:15,823 INFO L225 Difference]: With dead ends: 140632 [2024-11-09 19:28:15,823 INFO L226 Difference]: Without dead ends: 78213 [2024-11-09 19:28:15,861 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 [2024-11-09 19:28:15,862 INFO L432 NwaCegarLoop]: 1960 mSDtfsCounter, 1344 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3678 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 4188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 3678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:28:15,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 1970 Invalid, 4188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 3678 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 19:28:15,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78213 states. [2024-11-09 19:28:16,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78213 to 75205. [2024-11-09 19:28:17,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75205 states, 75204 states have (on average 1.9836311898303283) internal successors, (149177), 75204 states have internal predecessors, (149177), 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) [2024-11-09 19:28:17,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75205 states to 75205 states and 149177 transitions. [2024-11-09 19:28:17,394 INFO L78 Accepts]: Start accepts. Automaton has 75205 states and 149177 transitions. Word has length 650 [2024-11-09 19:28:17,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:28:17,394 INFO L471 AbstractCegarLoop]: Abstraction has 75205 states and 149177 transitions. [2024-11-09 19:28:17,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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) [2024-11-09 19:28:17,394 INFO L276 IsEmpty]: Start isEmpty. Operand 75205 states and 149177 transitions. [2024-11-09 19:28:17,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2024-11-09 19:28:17,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:28:17,429 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:28:17,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 19:28:17,429 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:28:17,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:28:17,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1233995269, now seen corresponding path program 1 times [2024-11-09 19:28:17,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:28:17,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473640923] [2024-11-09 19:28:17,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:28:17,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:28:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:28:18,079 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 615 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-09 19:28:18,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:28:18,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473640923] [2024-11-09 19:28:18,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473640923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:28:18,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:28:18,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:28:18,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2381012] [2024-11-09 19:28:18,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:28:18,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:28:18,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:28:18,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:28:18,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:28:18,083 INFO L87 Difference]: Start difference. First operand 75205 states and 149177 transitions. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 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)