./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/string_concat-noarr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f 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/loop-invgen/string_concat-noarr.i -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 30a4b942034eaa47a8fcc8fdf4549d1d63a9a60d59b585da2a353c9626604750 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 19:46:24,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 19:46:24,810 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 19:46:24,816 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 19:46:24,817 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 19:46:24,847 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 19:46:24,848 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 19:46:24,848 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 19:46:24,849 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 19:46:24,849 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 19:46:24,849 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 19:46:24,850 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 19:46:24,850 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 19:46:24,850 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 19:46:24,851 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 19:46:24,851 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 19:46:24,851 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 19:46:24,852 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 19:46:24,852 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 19:46:24,852 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 19:46:24,853 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 19:46:24,856 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 19:46:24,856 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 19:46:24,856 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 19:46:24,856 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 19:46:24,857 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 19:46:24,857 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 19:46:24,857 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 19:46:24,857 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 19:46:24,858 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 19:46:24,858 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 19:46:24,858 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 19:46:24,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 19:46:24,859 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 19:46:24,859 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 19:46:24,863 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 19:46:24,863 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 19:46:24,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 19:46:24,864 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 19:46:24,864 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 19:46:24,864 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 19:46:24,865 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 19:46:24,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30a4b942034eaa47a8fcc8fdf4549d1d63a9a60d59b585da2a353c9626604750 [2024-11-11 19:46:25,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 19:46:25,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 19:46:25,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 19:46:25,151 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 19:46:25,151 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 19:46:25,152 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/string_concat-noarr.i [2024-11-11 19:46:26,605 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 19:46:26,793 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 19:46:26,793 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/string_concat-noarr.i [2024-11-11 19:46:26,802 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccab49e02/8f7280438bea4eeeb16c5c979e6ab6ac/FLAGfacb50f59 [2024-11-11 19:46:26,815 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccab49e02/8f7280438bea4eeeb16c5c979e6ab6ac [2024-11-11 19:46:26,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 19:46:26,819 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 19:46:26,823 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 19:46:26,823 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 19:46:26,828 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 19:46:26,829 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 07:46:26" (1/1) ... [2024-11-11 19:46:26,830 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ce5eda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:46:26, skipping insertion in model container [2024-11-11 19:46:26,831 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 07:46:26" (1/1) ... [2024-11-11 19:46:26,848 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 19:46:27,033 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/loop-invgen/string_concat-noarr.i[893,906] [2024-11-11 19:46:27,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 19:46:27,058 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 19:46:27,071 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/loop-invgen/string_concat-noarr.i[893,906] [2024-11-11 19:46:27,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 19:46:27,112 INFO L204 MainTranslator]: Completed translation [2024-11-11 19:46:27,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:46:27 WrapperNode [2024-11-11 19:46:27,114 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 19:46:27,115 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 19:46:27,115 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 19:46:27,115 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 19:46:27,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:46:27" (1/1) ... [2024-11-11 19:46:27,129 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:46:27" (1/1) ... [2024-11-11 19:46:27,156 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2024-11-11 19:46:27,160 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 19:46:27,161 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 19:46:27,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 19:46:27,165 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 19:46:27,175 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:46:27" (1/1) ... [2024-11-11 19:46:27,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:46:27" (1/1) ... [2024-11-11 19:46:27,177 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:46:27" (1/1) ... [2024-11-11 19:46:27,189 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]. [2024-11-11 19:46:27,189 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:46:27" (1/1) ... [2024-11-11 19:46:27,189 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:46:27" (1/1) ... [2024-11-11 19:46:27,192 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:46:27" (1/1) ... [2024-11-11 19:46:27,194 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:46:27" (1/1) ... [2024-11-11 19:46:27,195 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:46:27" (1/1) ... [2024-11-11 19:46:27,196 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:46:27" (1/1) ... [2024-11-11 19:46:27,197 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 19:46:27,200 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 19:46:27,200 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 19:46:27,200 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 19:46:27,201 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:46:27" (1/1) ... [2024-11-11 19:46:27,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 19:46:27,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:46:27,231 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) [2024-11-11 19:46:27,234 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 [2024-11-11 19:46:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 19:46:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 19:46:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 19:46:27,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 19:46:27,325 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 19:46:27,327 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 19:46:27,426 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-11 19:46:27,426 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 19:46:27,436 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 19:46:27,437 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-11 19:46:27,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 07:46:27 BoogieIcfgContainer [2024-11-11 19:46:27,438 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 19:46:27,441 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 19:46:27,442 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 19:46:27,445 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 19:46:27,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 07:46:26" (1/3) ... [2024-11-11 19:46:27,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ad1b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 07:46:27, skipping insertion in model container [2024-11-11 19:46:27,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:46:27" (2/3) ... [2024-11-11 19:46:27,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ad1b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 07:46:27, skipping insertion in model container [2024-11-11 19:46:27,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 07:46:27" (3/3) ... [2024-11-11 19:46:27,449 INFO L112 eAbstractionObserver]: Analyzing ICFG string_concat-noarr.i [2024-11-11 19:46:27,465 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 19:46:27,466 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 19:46:27,530 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 19:46:27,536 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;@3c0780, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 19:46:27,536 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 19:46:27,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:46:27,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-11 19:46:27,547 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:46:27,547 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:46:27,548 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:46:27,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:46:27,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1270421808, now seen corresponding path program 1 times [2024-11-11 19:46:27,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:46:27,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527294641] [2024-11-11 19:46:27,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:46:27,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:46:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:46:27,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:46:27,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:46:27,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527294641] [2024-11-11 19:46:27,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527294641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 19:46:27,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 19:46:27,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 19:46:27,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221835286] [2024-11-11 19:46:27,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 19:46:27,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-11 19:46:27,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:46:27,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-11 19:46:27,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 19:46:27,729 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:46:27,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:46:27,742 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2024-11-11 19:46:27,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-11 19:46:27,745 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-11-11 19:46:27,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:46:27,751 INFO L225 Difference]: With dead ends: 29 [2024-11-11 19:46:27,752 INFO L226 Difference]: Without dead ends: 12 [2024-11-11 19:46:27,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 19:46:27,760 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 19:46:27,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 19:46:27,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-11 19:46:27,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-11 19:46:27,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:46:27,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2024-11-11 19:46:27,786 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2024-11-11 19:46:27,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:46:27,786 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2024-11-11 19:46:27,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:46:27,787 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2024-11-11 19:46:27,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-11 19:46:27,787 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:46:27,787 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:46:27,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 19:46:27,788 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:46:27,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:46:27,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1947968043, now seen corresponding path program 1 times [2024-11-11 19:46:27,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:46:27,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861136759] [2024-11-11 19:46:27,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:46:27,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:46:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:46:28,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:46:28,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:46:28,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861136759] [2024-11-11 19:46:28,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861136759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 19:46:28,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 19:46:28,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 19:46:28,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264040885] [2024-11-11 19:46:28,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 19:46:28,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 19:46:28,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:46:28,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 19:46:28,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-11 19:46:28,006 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:46:28,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:46:28,042 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2024-11-11 19:46:28,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 19:46:28,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-11-11 19:46:28,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:46:28,044 INFO L225 Difference]: With dead ends: 21 [2024-11-11 19:46:28,044 INFO L226 Difference]: Without dead ends: 17 [2024-11-11 19:46:28,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-11 19:46:28,045 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 19:46:28,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 19:46:28,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-11 19:46:28,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2024-11-11 19:46:28,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:46:28,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-11-11 19:46:28,050 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2024-11-11 19:46:28,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:46:28,050 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-11-11 19:46:28,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:46:28,050 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2024-11-11 19:46:28,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-11 19:46:28,051 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:46:28,051 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:46:28,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-11 19:46:28,052 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:46:28,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:46:28,052 INFO L85 PathProgramCache]: Analyzing trace with hash 653313584, now seen corresponding path program 1 times [2024-11-11 19:46:28,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:46:28,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018576215] [2024-11-11 19:46:28,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:46:28,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:46:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:46:28,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:46:28,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:46:28,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018576215] [2024-11-11 19:46:28,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018576215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:46:28,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961592046] [2024-11-11 19:46:28,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:46:28,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:46:28,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:46:28,172 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) [2024-11-11 19:46:28,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 19:46:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:46:28,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-11 19:46:28,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:46:28,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:46:28,364 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:46:28,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:46:28,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961592046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:46:28,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:46:28,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-11 19:46:28,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329886804] [2024-11-11 19:46:28,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:46:28,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-11 19:46:28,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:46:28,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-11 19:46:28,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-11 19:46:28,443 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:46:28,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:46:28,521 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2024-11-11 19:46:28,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-11 19:46:28,521 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 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 13 [2024-11-11 19:46:28,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:46:28,523 INFO L225 Difference]: With dead ends: 42 [2024-11-11 19:46:28,523 INFO L226 Difference]: Without dead ends: 36 [2024-11-11 19:46:28,523 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-11 19:46:28,524 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 19:46:28,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 27 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 19:46:28,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-11 19:46:28,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2024-11-11 19:46:28,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:46:28,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-11-11 19:46:28,534 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 13 [2024-11-11 19:46:28,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:46:28,534 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-11-11 19:46:28,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:46:28,536 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-11-11 19:46:28,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-11 19:46:28,537 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:46:28,537 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:46:28,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-11 19:46:28,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:46:28,738 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:46:28,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:46:28,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1676362047, now seen corresponding path program 2 times [2024-11-11 19:46:28,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:46:28,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94193731] [2024-11-11 19:46:28,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:46:28,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:46:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:46:28,906 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:46:28,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:46:28,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94193731] [2024-11-11 19:46:28,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94193731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:46:28,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733479481] [2024-11-11 19:46:28,907 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 19:46:28,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:46:28,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:46:28,912 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:46:28,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 19:46:28,968 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 19:46:28,968 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:46:28,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-11 19:46:28,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:46:29,027 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:46:29,030 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:46:29,146 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:46:29,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733479481] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:46:29,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:46:29,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-11 19:46:29,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947674463] [2024-11-11 19:46:29,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:46:29,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-11 19:46:29,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:46:29,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-11 19:46:29,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2024-11-11 19:46:29,152 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:46:29,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:46:29,271 INFO L93 Difference]: Finished difference Result 83 states and 99 transitions. [2024-11-11 19:46:29,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-11 19:46:29,271 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 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 19 [2024-11-11 19:46:29,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:46:29,273 INFO L225 Difference]: With dead ends: 83 [2024-11-11 19:46:29,274 INFO L226 Difference]: Without dead ends: 74 [2024-11-11 19:46:29,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2024-11-11 19:46:29,276 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 39 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 19:46:29,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 39 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 19:46:29,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-11 19:46:29,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 47. [2024-11-11 19:46:29,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 46 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:46:29,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2024-11-11 19:46:29,286 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 19 [2024-11-11 19:46:29,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:46:29,286 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2024-11-11 19:46:29,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:46:29,287 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2024-11-11 19:46:29,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-11 19:46:29,287 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:46:29,288 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:46:29,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-11 19:46:29,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-11 19:46:29,492 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:46:29,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:46:29,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1240264099, now seen corresponding path program 3 times [2024-11-11 19:46:29,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:46:29,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165234704] [2024-11-11 19:46:29,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:46:29,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:46:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:46:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:46:29,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:46:29,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165234704] [2024-11-11 19:46:29,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165234704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:46:29,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221164349] [2024-11-11 19:46:29,785 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 19:46:29,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:46:29,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:46:29,792 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:46:29,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 19:46:29,842 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-11 19:46:29,843 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:46:29,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-11 19:46:29,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:46:29,914 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:46:29,914 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:46:30,191 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:46:30,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221164349] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:46:30,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:46:30,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2024-11-11 19:46:30,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737021827] [2024-11-11 19:46:30,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:46:30,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-11 19:46:30,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:46:30,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-11 19:46:30,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=397, Unknown=0, NotChecked=0, Total=702 [2024-11-11 19:46:30,195 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 27 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:46:30,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:46:30,441 INFO L93 Difference]: Finished difference Result 197 states and 231 transitions. [2024-11-11 19:46:30,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-11 19:46:30,441 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 27 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-11 19:46:30,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:46:30,443 INFO L225 Difference]: With dead ends: 197 [2024-11-11 19:46:30,443 INFO L226 Difference]: Without dead ends: 182 [2024-11-11 19:46:30,444 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=305, Invalid=397, Unknown=0, NotChecked=0, Total=702 [2024-11-11 19:46:30,444 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 179 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 19:46:30,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 68 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 19:46:30,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-11 19:46:30,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 89. [2024-11-11 19:46:30,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.1477272727272727) internal successors, (101), 88 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:46:30,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2024-11-11 19:46:30,461 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 31 [2024-11-11 19:46:30,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:46:30,463 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2024-11-11 19:46:30,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 27 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:46:30,464 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2024-11-11 19:46:30,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-11 19:46:30,465 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:46:30,465 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:46:30,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-11 19:46:30,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:46:30,670 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:46:30,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:46:30,670 INFO L85 PathProgramCache]: Analyzing trace with hash 351142503, now seen corresponding path program 4 times [2024-11-11 19:46:30,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:46:30,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135748152] [2024-11-11 19:46:30,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:46:30,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:46:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:46:31,327 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:46:31,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:46:31,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135748152] [2024-11-11 19:46:31,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135748152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:46:31,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860024071] [2024-11-11 19:46:31,328 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 19:46:31,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:46:31,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:46:31,333 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:46:31,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-11 19:46:31,400 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 19:46:31,400 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:46:31,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-11 19:46:31,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:46:31,509 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:46:31,509 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:46:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:46:32,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860024071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:46:32,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:46:32,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2024-11-11 19:46:32,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013624854] [2024-11-11 19:46:32,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:46:32,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-11 19:46:32,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:46:32,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-11 19:46:32,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1181, Invalid=1369, Unknown=0, NotChecked=0, Total=2550 [2024-11-11 19:46:32,424 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand has 51 states, 51 states have (on average 2.235294117647059) internal successors, (114), 51 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:46:32,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:46:32,904 INFO L93 Difference]: Finished difference Result 533 states and 603 transitions. [2024-11-11 19:46:32,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-11 19:46:32,905 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.235294117647059) internal successors, (114), 51 states have internal predecessors, (114), 0 states have call successors, (0), 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 55 [2024-11-11 19:46:32,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:46:32,908 INFO L225 Difference]: With dead ends: 533 [2024-11-11 19:46:32,908 INFO L226 Difference]: Without dead ends: 506 [2024-11-11 19:46:32,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1181, Invalid=1369, Unknown=0, NotChecked=0, Total=2550 [2024-11-11 19:46:32,911 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 382 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 19:46:32,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 128 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 19:46:32,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2024-11-11 19:46:32,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 173. [2024-11-11 19:46:32,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.1453488372093024) internal successors, (197), 172 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:46:32,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 197 transitions. [2024-11-11 19:46:32,936 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 197 transitions. Word has length 55 [2024-11-11 19:46:32,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:46:32,936 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 197 transitions. [2024-11-11 19:46:32,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.235294117647059) internal successors, (114), 51 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:46:32,937 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 197 transitions. [2024-11-11 19:46:32,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-11 19:46:32,940 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:46:32,940 INFO L218 NwaCegarLoop]: trace histogram [47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:46:32,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-11 19:46:33,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:46:33,144 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:46:33,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:46:33,144 INFO L85 PathProgramCache]: Analyzing trace with hash -229570577, now seen corresponding path program 5 times [2024-11-11 19:46:33,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:46:33,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65648193] [2024-11-11 19:46:33,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:46:33,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:46:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:46:34,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:46:34,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:46:34,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65648193] [2024-11-11 19:46:34,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65648193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:46:34,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318627553] [2024-11-11 19:46:34,965 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-11 19:46:34,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:46:34,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:46:34,967 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:46:34,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-11 19:46:35,115 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-11 19:46:35,115 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:46:35,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-11 19:46:35,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:46:35,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:46:35,308 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:46:37,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:46:37,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318627553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:46:37,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:46:37,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 99 [2024-11-11 19:46:37,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786033692] [2024-11-11 19:46:37,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:46:37,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-11-11 19:46:37,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:46:37,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-11-11 19:46:37,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4661, Invalid=5041, Unknown=0, NotChecked=0, Total=9702 [2024-11-11 19:46:37,954 INFO L87 Difference]: Start difference. First operand 173 states and 197 transitions. Second operand has 99 states, 99 states have (on average 2.121212121212121) internal successors, (210), 99 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:46:39,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:46:39,625 INFO L93 Difference]: Finished difference Result 1637 states and 1779 transitions. [2024-11-11 19:46:39,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-11 19:46:39,625 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.121212121212121) internal successors, (210), 99 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-11 19:46:39,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:46:39,631 INFO L225 Difference]: With dead ends: 1637 [2024-11-11 19:46:39,631 INFO L226 Difference]: Without dead ends: 1586 [2024-11-11 19:46:39,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4661, Invalid=5041, Unknown=0, NotChecked=0, Total=9702 [2024-11-11 19:46:39,634 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 1177 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-11 19:46:39,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 216 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-11 19:46:39,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2024-11-11 19:46:39,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 341. [2024-11-11 19:46:39,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.1441176470588235) internal successors, (389), 340 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:46:39,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 389 transitions. [2024-11-11 19:46:39,697 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 389 transitions. Word has length 103 [2024-11-11 19:46:39,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:46:39,704 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 389 transitions. [2024-11-11 19:46:39,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.121212121212121) internal successors, (210), 99 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:46:39,705 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 389 transitions. [2024-11-11 19:46:39,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-11 19:46:39,715 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:46:39,716 INFO L218 NwaCegarLoop]: trace histogram [95, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:46:39,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-11 19:46:39,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:46:39,921 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:46:39,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:46:39,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1249213697, now seen corresponding path program 6 times [2024-11-11 19:46:39,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:46:39,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808733430] [2024-11-11 19:46:39,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:46:39,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:46:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:46:45,036 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:46:45,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:46:45,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808733430] [2024-11-11 19:46:45,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808733430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:46:45,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89513679] [2024-11-11 19:46:45,037 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-11 19:46:45,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:46:45,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:46:45,038 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:46:45,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-11 19:46:45,251 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2024-11-11 19:46:45,251 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:46:45,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-11 19:46:45,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:46:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:46:45,587 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:46:54,456 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:46:54,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89513679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:46:54,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:46:54,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98, 98] total 195 [2024-11-11 19:46:54,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876311523] [2024-11-11 19:46:54,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:46:54,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 195 states [2024-11-11 19:46:54,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:46:54,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2024-11-11 19:46:54,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18533, Invalid=19297, Unknown=0, NotChecked=0, Total=37830 [2024-11-11 19:46:54,470 INFO L87 Difference]: Start difference. First operand 341 states and 389 transitions. Second operand has 195 states, 195 states have (on average 2.0615384615384613) internal successors, (402), 195 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:47:09,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:47:09,661 INFO L93 Difference]: Finished difference Result 5573 states and 5859 transitions. [2024-11-11 19:47:09,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2024-11-11 19:47:09,662 INFO L78 Accepts]: Start accepts. Automaton has has 195 states, 195 states have (on average 2.0615384615384613) internal successors, (402), 195 states have internal predecessors, (402), 0 states have call successors, (0), 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 199 [2024-11-11 19:47:09,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:47:09,679 INFO L225 Difference]: With dead ends: 5573 [2024-11-11 19:47:09,680 INFO L226 Difference]: Without dead ends: 5474 [2024-11-11 19:47:09,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=18533, Invalid=19297, Unknown=0, NotChecked=0, Total=37830 [2024-11-11 19:47:09,686 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 2487 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 1284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2487 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 2072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1284 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-11 19:47:09,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2487 Valid, 404 Invalid, 2072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1284 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-11 19:47:09,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5474 states. [2024-11-11 19:47:09,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5474 to 677. [2024-11-11 19:47:09,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 676 states have (on average 1.143491124260355) internal successors, (773), 676 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:47:09,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 773 transitions. [2024-11-11 19:47:09,851 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 773 transitions. Word has length 199 [2024-11-11 19:47:09,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:47:09,852 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 773 transitions. [2024-11-11 19:47:09,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 195 states, 195 states have (on average 2.0615384615384613) internal successors, (402), 195 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:47:09,853 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 773 transitions. [2024-11-11 19:47:09,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-11-11 19:47:09,859 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:47:09,859 INFO L218 NwaCegarLoop]: trace histogram [191, 190, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:47:09,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-11 19:47:10,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:47:10,060 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:47:10,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:47:10,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1430993183, now seen corresponding path program 7 times [2024-11-11 19:47:10,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:47:10,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151469725] [2024-11-11 19:47:10,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:47:10,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:47:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:47:28,198 INFO L134 CoverageAnalysis]: Checked inductivity of 36290 backedges. 0 proven. 36290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:47:28,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:47:28,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151469725] [2024-11-11 19:47:28,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151469725] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:47:28,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587789837] [2024-11-11 19:47:28,199 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-11 19:47:28,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:47:28,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:47:28,201 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:47:28,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-11 19:47:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:47:28,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-11-11 19:47:28,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:47:52,691 INFO L134 CoverageAnalysis]: Checked inductivity of 36290 backedges. 36290 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:47:52,692 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 19:47:52,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587789837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 19:47:52,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 19:47:52,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [193] imperfect sequences [194] total 385 [2024-11-11 19:47:52,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220296914] [2024-11-11 19:47:52,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 19:47:52,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-11 19:47:52,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:47:52,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-11 19:47:52,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37057, Invalid=110783, Unknown=0, NotChecked=0, Total=147840 [2024-11-11 19:47:52,718 INFO L87 Difference]: Start difference. First operand 677 states and 773 transitions. Second operand has 193 states, 193 states have (on average 2.0259067357512954) internal successors, (391), 193 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)