./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label08.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_label08.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6974994fa41c2218950105a3f2a905efa9ed2213c945e8187ea9622e98b47d24 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:24:55,103 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:24:55,158 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:24:55,163 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:24:55,164 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:24:55,186 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:24:55,186 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:24:55,187 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:24:55,187 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:24:55,188 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:24:55,188 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:24:55,188 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:24:55,189 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:24:55,190 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:24:55,190 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:24:55,191 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:24:55,191 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:24:55,191 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:24:55,191 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:24:55,192 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:24:55,194 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:24:55,195 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:24:55,195 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:24:55,195 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:24:55,195 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:24:55,195 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:24:55,196 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:24:55,196 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:24:55,196 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:24:55,196 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:24:55,196 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:24:55,196 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:24:55,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:24:55,197 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:24:55,197 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:24:55,197 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:24:55,197 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:24:55,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:24:55,197 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:24:55,198 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:24:55,198 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:24:55,198 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:24:55,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6974994fa41c2218950105a3f2a905efa9ed2213c945e8187ea9622e98b47d24 [2024-11-09 19:24:55,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:24:55,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:24:55,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:24:55,438 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:24:55,438 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:24:55,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label08.c [2024-11-09 19:24:56,681 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:24:56,992 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:24:56,993 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label08.c [2024-11-09 19:24:57,013 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4a8cdc94/4d58c51fa6a2485c9c8a96b999262dca/FLAG73bb88098 [2024-11-09 19:24:57,025 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4a8cdc94/4d58c51fa6a2485c9c8a96b999262dca [2024-11-09 19:24:57,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:24:57,028 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:24:57,032 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:24:57,032 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:24:57,036 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:24:57,037 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:24:57" (1/1) ... [2024-11-09 19:24:57,037 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@469a57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:57, skipping insertion in model container [2024-11-09 19:24:57,037 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:24:57" (1/1) ... [2024-11-09 19:24:57,154 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:24:57,341 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_label08.c[3868,3881] [2024-11-09 19:24:57,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:24:57,939 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:24:57,957 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_label08.c[3868,3881] [2024-11-09 19:24:58,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:24:58,375 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:24:58,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58 WrapperNode [2024-11-09 19:24:58,376 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:24:58,377 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:24:58,377 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:24:58,377 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:24:58,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 19:24:58,420 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 19:24:58,578 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4760 [2024-11-09 19:24:58,579 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:24:58,579 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:24:58,579 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:24:58,580 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:24:58,588 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 19:24:58,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 19:24:58,613 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 19:24:58,801 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 19:24:58,801 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 19:24:58,801 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 19:24:58,904 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 19:24:58,918 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 19:24:58,934 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 19:24:58,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 19:24:59,005 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:24:59,008 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:24:59,008 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:24:59,008 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:24:59,009 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 19:24:59,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:24:59,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:24:59,040 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 19:24:59,043 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 19:24:59,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:24:59,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:24:59,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:24:59,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:24:59,141 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:24:59,142 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:25:03,584 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L4665: havoc calculate_output3_#t~ret11#1; [2024-11-09 19:25:03,585 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1696: havoc calculate_output_#t~ret9#1; [2024-11-09 19:25:03,585 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L3175: havoc calculate_output2_#t~ret10#1; [2024-11-09 19:25:03,827 INFO L? ?]: Removed 2039 outVars from TransFormulas that were not future-live. [2024-11-09 19:25:03,828 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:25:03,850 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:25:03,850 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:25:03,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:25:03 BoogieIcfgContainer [2024-11-09 19:25:03,851 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:25:03,852 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:25:03,852 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:25:03,854 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:25:03,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:24:57" (1/3) ... [2024-11-09 19:25:03,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4481b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:25:03, skipping insertion in model container [2024-11-09 19:25:03,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (2/3) ... [2024-11-09 19:25:03,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4481b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:25:03, skipping insertion in model container [2024-11-09 19:25:03,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:25:03" (3/3) ... [2024-11-09 19:25:03,856 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label08.c [2024-11-09 19:25:03,869 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:25:03,869 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:25:03,926 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:25:03,931 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;@7e364455, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:25:03,931 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:25:03,937 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 19:25:03,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 19:25:03,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:03,942 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:25:03,942 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:03,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:03,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1679902055, now seen corresponding path program 1 times [2024-11-09 19:25:03,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:03,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188104573] [2024-11-09 19:25:03,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:03,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:04,166 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 19:25:04,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:04,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188104573] [2024-11-09 19:25:04,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188104573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:04,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:04,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:25:04,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505009041] [2024-11-09 19:25:04,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:04,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:04,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:04,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:04,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:25:04,190 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 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 19:25:08,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:08,347 INFO L93 Difference]: Finished difference Result 2394 states and 6675 transitions. [2024-11-09 19:25:08,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:25:08,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2024-11-09 19:25:08,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:08,380 INFO L225 Difference]: With dead ends: 2394 [2024-11-09 19:25:08,381 INFO L226 Difference]: Without dead ends: 1509 [2024-11-09 19:25:08,388 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 19:25:08,392 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 1487 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 3860 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 4624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 3860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:08,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 116 Invalid, 4624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 3860 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-09 19:25:08,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2024-11-09 19:25:08,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1509. [2024-11-09 19:25:08,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1508 states have (on average 2.7659151193633953) internal successors, (4171), 1508 states have internal predecessors, (4171), 0 states have call successors, (0), 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 19:25:08,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 4171 transitions. [2024-11-09 19:25:08,488 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 4171 transitions. Word has length 31 [2024-11-09 19:25:08,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:08,490 INFO L471 AbstractCegarLoop]: Abstraction has 1509 states and 4171 transitions. [2024-11-09 19:25:08,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 19:25:08,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 4171 transitions. [2024-11-09 19:25:08,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 19:25:08,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:08,501 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:08,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:25:08,502 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:08,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:08,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1381002260, now seen corresponding path program 1 times [2024-11-09 19:25:08,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:08,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242346872] [2024-11-09 19:25:08,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:08,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:08,730 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:25:08,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:08,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242346872] [2024-11-09 19:25:08,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242346872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:08,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:08,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:25:08,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503069852] [2024-11-09 19:25:08,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:08,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:08,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:08,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:08,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:25:08,733 INFO L87 Difference]: Start difference. First operand 1509 states and 4171 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 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 19:25:13,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:13,092 INFO L93 Difference]: Finished difference Result 4520 states and 12507 transitions. [2024-11-09 19:25:13,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:25:13,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2024-11-09 19:25:13,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:13,103 INFO L225 Difference]: With dead ends: 4520 [2024-11-09 19:25:13,104 INFO L226 Difference]: Without dead ends: 3013 [2024-11-09 19:25:13,106 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 19:25:13,106 INFO L432 NwaCegarLoop]: 470 mSDtfsCounter, 1414 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 3621 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 4273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 3621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:13,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 479 Invalid, 4273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 3621 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-09 19:25:13,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3013 states. [2024-11-09 19:25:13,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3013 to 3013. [2024-11-09 19:25:13,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3013 states, 3012 states have (on average 2.479083665338645) internal successors, (7467), 3012 states have internal predecessors, (7467), 0 states have call successors, (0), 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 19:25:13,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 7467 transitions. [2024-11-09 19:25:13,153 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 7467 transitions. Word has length 97 [2024-11-09 19:25:13,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:13,154 INFO L471 AbstractCegarLoop]: Abstraction has 3013 states and 7467 transitions. [2024-11-09 19:25:13,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 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 19:25:13,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 7467 transitions. [2024-11-09 19:25:13,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-09 19:25:13,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:13,157 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:13,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:25:13,157 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:13,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:13,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1156645184, now seen corresponding path program 1 times [2024-11-09 19:25:13,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:13,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632674671] [2024-11-09 19:25:13,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:13,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:13,356 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:25:13,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:13,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632674671] [2024-11-09 19:25:13,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632674671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:13,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:13,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:25:13,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949390626] [2024-11-09 19:25:13,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:13,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:25:13,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:13,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:25:13,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:25:13,361 INFO L87 Difference]: Start difference. First operand 3013 states and 7467 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 19:25:19,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:19,438 INFO L93 Difference]: Finished difference Result 9784 states and 24031 transitions. [2024-11-09 19:25:19,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:25:19,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2024-11-09 19:25:19,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:19,459 INFO L225 Difference]: With dead ends: 9784 [2024-11-09 19:25:19,460 INFO L226 Difference]: Without dead ends: 6773 [2024-11-09 19:25:19,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:25:19,464 INFO L432 NwaCegarLoop]: 281 mSDtfsCounter, 4267 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 7525 mSolverCounterSat, 830 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4267 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 8355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 830 IncrementalHoareTripleChecker+Valid, 7525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:19,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4267 Valid, 304 Invalid, 8355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [830 Valid, 7525 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-11-09 19:25:19,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6773 states. [2024-11-09 19:25:19,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6773 to 6773. [2024-11-09 19:25:19,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6773 states, 6772 states have (on average 2.382309509746013) internal successors, (16133), 6772 states have internal predecessors, (16133), 0 states have call successors, (0), 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 19:25:19,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6773 states to 6773 states and 16133 transitions. [2024-11-09 19:25:19,569 INFO L78 Accepts]: Start accepts. Automaton has 6773 states and 16133 transitions. Word has length 116 [2024-11-09 19:25:19,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:19,569 INFO L471 AbstractCegarLoop]: Abstraction has 6773 states and 16133 transitions. [2024-11-09 19:25:19,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 19:25:19,570 INFO L276 IsEmpty]: Start isEmpty. Operand 6773 states and 16133 transitions. [2024-11-09 19:25:19,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-09 19:25:19,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:19,575 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:25:19,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:25:19,576 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:19,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:19,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1653914487, now seen corresponding path program 1 times [2024-11-09 19:25:19,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:19,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281688998] [2024-11-09 19:25:19,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:19,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:19,883 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:25:19,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:19,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281688998] [2024-11-09 19:25:19,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281688998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:19,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:19,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:25:19,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054253030] [2024-11-09 19:25:19,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:19,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:25:19,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:19,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:25:19,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:25:19,888 INFO L87 Difference]: Start difference. First operand 6773 states and 16133 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 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 19:25:24,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:24,277 INFO L93 Difference]: Finished difference Result 15838 states and 37168 transitions. [2024-11-09 19:25:24,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:25:24,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 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 208 [2024-11-09 19:25:24,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:24,305 INFO L225 Difference]: With dead ends: 15838 [2024-11-09 19:25:24,305 INFO L226 Difference]: Without dead ends: 9029 [2024-11-09 19:25:24,311 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 19:25:24,312 INFO L432 NwaCegarLoop]: 677 mSDtfsCounter, 1383 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 5135 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 5401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 5135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:24,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 694 Invalid, 5401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 5135 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-09 19:25:24,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9029 states. [2024-11-09 19:25:24,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9029 to 8277. [2024-11-09 19:25:24,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8277 states, 8276 states have (on average 2.2928951184146933) internal successors, (18976), 8276 states have internal predecessors, (18976), 0 states have call successors, (0), 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 19:25:24,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 18976 transitions. [2024-11-09 19:25:24,427 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 18976 transitions. Word has length 208 [2024-11-09 19:25:24,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:24,429 INFO L471 AbstractCegarLoop]: Abstraction has 8277 states and 18976 transitions. [2024-11-09 19:25:24,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 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 19:25:24,429 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 18976 transitions. [2024-11-09 19:25:24,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-09 19:25:24,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:24,433 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:25:24,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:25:24,433 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:24,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:24,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1572171275, now seen corresponding path program 1 times [2024-11-09 19:25:24,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:24,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707731154] [2024-11-09 19:25:24,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:24,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:24,586 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 19:25:24,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:24,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707731154] [2024-11-09 19:25:24,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707731154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:24,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:24,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:25:24,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786104857] [2024-11-09 19:25:24,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:24,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:24,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:24,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:24,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:25:24,590 INFO L87 Difference]: Start difference. First operand 8277 states and 18976 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 19:25:28,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:28,564 INFO L93 Difference]: Finished difference Result 19560 states and 45955 transitions. [2024-11-09 19:25:28,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:25:28,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 245 [2024-11-09 19:25:28,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:28,585 INFO L225 Difference]: With dead ends: 19560 [2024-11-09 19:25:28,585 INFO L226 Difference]: Without dead ends: 11285 [2024-11-09 19:25:28,590 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 19:25:28,591 INFO L432 NwaCegarLoop]: 633 mSDtfsCounter, 1410 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 3655 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1410 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 4249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 3655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:28,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1410 Valid, 642 Invalid, 4249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 3655 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-09 19:25:28,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11285 states. [2024-11-09 19:25:28,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11285 to 8277. [2024-11-09 19:25:28,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8277 states, 8276 states have (on average 2.2928951184146933) internal successors, (18976), 8276 states have internal predecessors, (18976), 0 states have call successors, (0), 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 19:25:28,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 18976 transitions. [2024-11-09 19:25:28,706 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 18976 transitions. Word has length 245 [2024-11-09 19:25:28,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:28,706 INFO L471 AbstractCegarLoop]: Abstraction has 8277 states and 18976 transitions. [2024-11-09 19:25:28,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 19:25:28,707 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 18976 transitions. [2024-11-09 19:25:28,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-09 19:25:28,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:28,709 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:25:28,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:25:28,709 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:28,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:28,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1359195067, now seen corresponding path program 1 times [2024-11-09 19:25:28,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:28,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771546708] [2024-11-09 19:25:28,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:28,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:28,836 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 19:25:28,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:28,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771546708] [2024-11-09 19:25:28,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771546708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:28,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:28,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:25:28,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783752261] [2024-11-09 19:25:28,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:28,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:28,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:28,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:28,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:25:28,839 INFO L87 Difference]: Start difference. First operand 8277 states and 18976 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 19:25:32,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:32,545 INFO L93 Difference]: Finished difference Result 22571 states and 52453 transitions. [2024-11-09 19:25:32,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:25:32,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 246 [2024-11-09 19:25:32,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:32,572 INFO L225 Difference]: With dead ends: 22571 [2024-11-09 19:25:32,573 INFO L226 Difference]: Without dead ends: 14296 [2024-11-09 19:25:32,582 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 19:25:32,583 INFO L432 NwaCegarLoop]: 306 mSDtfsCounter, 1529 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 3669 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 4135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 3669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:32,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 315 Invalid, 4135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 3669 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-09 19:25:32,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14296 states. [2024-11-09 19:25:32,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14296 to 12037. [2024-11-09 19:25:32,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12037 states, 12036 states have (on average 2.273762047191758) internal successors, (27367), 12036 states have internal predecessors, (27367), 0 states have call successors, (0), 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 19:25:32,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 27367 transitions. [2024-11-09 19:25:32,888 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 27367 transitions. Word has length 246 [2024-11-09 19:25:32,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:32,889 INFO L471 AbstractCegarLoop]: Abstraction has 12037 states and 27367 transitions. [2024-11-09 19:25:32,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 19:25:32,889 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 27367 transitions. [2024-11-09 19:25:32,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-09 19:25:32,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:32,892 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:25:32,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:25:32,893 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:32,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:32,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1681022153, now seen corresponding path program 1 times [2024-11-09 19:25:32,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:32,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963588408] [2024-11-09 19:25:32,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:32,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-09 19:25:33,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:33,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963588408] [2024-11-09 19:25:33,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963588408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:33,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:33,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:25:33,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536898565] [2024-11-09 19:25:33,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:33,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:33,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:33,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:33,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:25:33,081 INFO L87 Difference]: Start difference. First operand 12037 states and 27367 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 19:25:37,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:37,050 INFO L93 Difference]: Finished difference Result 31592 states and 71434 transitions. [2024-11-09 19:25:37,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:25:37,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 267 [2024-11-09 19:25:37,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:37,086 INFO L225 Difference]: With dead ends: 31592 [2024-11-09 19:25:37,086 INFO L226 Difference]: Without dead ends: 19557 [2024-11-09 19:25:37,099 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 19:25:37,102 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 1378 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3333 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s 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, 3.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:37,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1378 Valid, 430 Invalid, 4131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 3333 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-09 19:25:37,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19557 states. [2024-11-09 19:25:37,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19557 to 18805. [2024-11-09 19:25:37,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18805 states, 18804 states have (on average 2.09189534141672) internal successors, (39336), 18804 states have internal predecessors, (39336), 0 states have call successors, (0), 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 19:25:37,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18805 states to 18805 states and 39336 transitions. [2024-11-09 19:25:37,351 INFO L78 Accepts]: Start accepts. Automaton has 18805 states and 39336 transitions. Word has length 267 [2024-11-09 19:25:37,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:37,352 INFO L471 AbstractCegarLoop]: Abstraction has 18805 states and 39336 transitions. [2024-11-09 19:25:37,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 19:25:37,352 INFO L276 IsEmpty]: Start isEmpty. Operand 18805 states and 39336 transitions. [2024-11-09 19:25:37,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-11-09 19:25:37,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:37,357 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:25:37,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:25:37,358 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:37,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:37,359 INFO L85 PathProgramCache]: Analyzing trace with hash 912842834, now seen corresponding path program 1 times [2024-11-09 19:25:37,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:37,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073723535] [2024-11-09 19:25:37,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:37,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-09 19:25:37,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:37,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073723535] [2024-11-09 19:25:37,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073723535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:37,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:37,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:25:37,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113256886] [2024-11-09 19:25:37,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:37,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:37,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:37,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:37,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:25:37,529 INFO L87 Difference]: Start difference. First operand 18805 states and 39336 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:41,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:41,253 INFO L93 Difference]: Finished difference Result 43624 states and 92485 transitions. [2024-11-09 19:25:41,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:25:41,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 357 [2024-11-09 19:25:41,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:41,291 INFO L225 Difference]: With dead ends: 43624 [2024-11-09 19:25:41,292 INFO L226 Difference]: Without dead ends: 25573 [2024-11-09 19:25:41,307 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 19:25:41,307 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 1449 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3435 mSolverCounterSat, 834 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 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, 3.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:41,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 241 Invalid, 4269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [834 Valid, 3435 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-09 19:25:41,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25573 states. [2024-11-09 19:25:41,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25573 to 24821. [2024-11-09 19:25:41,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24821 states, 24820 states have (on average 2.093593875906527) internal successors, (51963), 24820 states have internal predecessors, (51963), 0 states have call successors, (0), 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 19:25:41,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24821 states to 24821 states and 51963 transitions. [2024-11-09 19:25:41,604 INFO L78 Accepts]: Start accepts. Automaton has 24821 states and 51963 transitions. Word has length 357 [2024-11-09 19:25:41,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:41,604 INFO L471 AbstractCegarLoop]: Abstraction has 24821 states and 51963 transitions. [2024-11-09 19:25:41,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:41,605 INFO L276 IsEmpty]: Start isEmpty. Operand 24821 states and 51963 transitions. [2024-11-09 19:25:41,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-11-09 19:25:41,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:41,610 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:25:41,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:25:41,611 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:41,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:41,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1636642378, now seen corresponding path program 1 times [2024-11-09 19:25:41,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:41,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424944556] [2024-11-09 19:25:41,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:41,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:41,783 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-09 19:25:41,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:41,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424944556] [2024-11-09 19:25:41,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424944556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:41,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:41,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:25:41,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920894434] [2024-11-09 19:25:41,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:41,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:41,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:41,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:41,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:25:41,787 INFO L87 Difference]: Start difference. First operand 24821 states and 51963 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 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 19:25:45,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:45,532 INFO L93 Difference]: Finished difference Result 60168 states and 127415 transitions. [2024-11-09 19:25:45,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:25:45,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 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 372 [2024-11-09 19:25:45,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:45,595 INFO L225 Difference]: With dead ends: 60168 [2024-11-09 19:25:45,600 INFO L226 Difference]: Without dead ends: 36101 [2024-11-09 19:25:45,626 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 19:25:45,627 INFO L432 NwaCegarLoop]: 554 mSDtfsCounter, 1347 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 3656 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 4290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 3656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:45,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1347 Valid, 563 Invalid, 4290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 3656 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 19:25:45,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36101 states. [2024-11-09 19:25:45,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36101 to 35349. [2024-11-09 19:25:46,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35349 states, 35348 states have (on average 2.0920844177888425) internal successors, (73951), 35348 states have internal predecessors, (73951), 0 states have call successors, (0), 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 19:25:46,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35349 states to 35349 states and 73951 transitions. [2024-11-09 19:25:46,063 INFO L78 Accepts]: Start accepts. Automaton has 35349 states and 73951 transitions. Word has length 372 [2024-11-09 19:25:46,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:46,063 INFO L471 AbstractCegarLoop]: Abstraction has 35349 states and 73951 transitions. [2024-11-09 19:25:46,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 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 19:25:46,064 INFO L276 IsEmpty]: Start isEmpty. Operand 35349 states and 73951 transitions. [2024-11-09 19:25:46,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-11-09 19:25:46,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:46,070 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:25:46,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:25:46,070 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:46,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:46,071 INFO L85 PathProgramCache]: Analyzing trace with hash -2116339534, now seen corresponding path program 1 times [2024-11-09 19:25:46,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:46,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820176078] [2024-11-09 19:25:46,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:46,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:46,272 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-09 19:25:46,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:46,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820176078] [2024-11-09 19:25:46,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820176078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:46,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:46,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:25:46,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19376586] [2024-11-09 19:25:46,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:46,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:46,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:46,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:46,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:25:46,274 INFO L87 Difference]: Start difference. First operand 35349 states and 73951 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:50,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:50,209 INFO L93 Difference]: Finished difference Result 80472 states and 169942 transitions. [2024-11-09 19:25:50,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:25:50,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 389 [2024-11-09 19:25:50,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:50,269 INFO L225 Difference]: With dead ends: 80472 [2024-11-09 19:25:50,269 INFO L226 Difference]: Without dead ends: 45877 [2024-11-09 19:25:50,281 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 19:25:50,282 INFO L432 NwaCegarLoop]: 1971 mSDtfsCounter, 1353 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3613 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 1981 SdHoareTripleChecker+Invalid, 4064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 3613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:50,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 1981 Invalid, 4064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 3613 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 19:25:50,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45877 states. [2024-11-09 19:25:50,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45877 to 45877. [2024-11-09 19:25:50,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45877 states, 45876 states have (on average 2.0700584183451043) internal successors, (94966), 45876 states have internal predecessors, (94966), 0 states have call successors, (0), 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 19:25:50,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45877 states to 45877 states and 94966 transitions. [2024-11-09 19:25:50,749 INFO L78 Accepts]: Start accepts. Automaton has 45877 states and 94966 transitions. Word has length 389 [2024-11-09 19:25:50,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:50,750 INFO L471 AbstractCegarLoop]: Abstraction has 45877 states and 94966 transitions. [2024-11-09 19:25:50,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:50,750 INFO L276 IsEmpty]: Start isEmpty. Operand 45877 states and 94966 transitions. [2024-11-09 19:25:50,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2024-11-09 19:25:50,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:50,755 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:50,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:25:50,756 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:50,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:50,756 INFO L85 PathProgramCache]: Analyzing trace with hash -300523202, now seen corresponding path program 1 times [2024-11-09 19:25:50,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:50,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309292709] [2024-11-09 19:25:50,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:50,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:52,289 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 344 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:25:52,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:52,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309292709] [2024-11-09 19:25:52,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309292709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:25:52,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777752535] [2024-11-09 19:25:52,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:52,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:25:52,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:25:52,292 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 19:25:52,293 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 19:25:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:52,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:25:52,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:25:52,832 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 250 proven. 28 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-09 19:25:52,832 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:25:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 250 proven. 28 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-09 19:25:53,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777752535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:25:53,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:25:53,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2024-11-09 19:25:53,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097468503] [2024-11-09 19:25:53,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:25:53,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 19:25:53,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:53,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 19:25:53,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-09 19:25:53,036 INFO L87 Difference]: Start difference. First operand 45877 states and 94966 transitions. Second operand has 10 states, 10 states have (on average 79.3) internal successors, (793), 10 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)