./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-lopstr16/flag_loopdep_simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-lopstr16/flag_loopdep_simple.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 2e1c46549da470f14361a9b2a5fb79d079bbffb4006138f4fef05b9b152f9be7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 22:18:20,097 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 22:18:20,165 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 22:18:20,173 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 22:18:20,175 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 22:18:20,207 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 22:18:20,208 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 22:18:20,208 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 22:18:20,209 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 22:18:20,209 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 22:18:20,210 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 22:18:20,210 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 22:18:20,210 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 22:18:20,211 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 22:18:20,211 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 22:18:20,212 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 22:18:20,212 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 22:18:20,212 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 22:18:20,213 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 22:18:20,213 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 22:18:20,213 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 22:18:20,214 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 22:18:20,214 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 22:18:20,215 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 22:18:20,215 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 22:18:20,215 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 22:18:20,216 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 22:18:20,216 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 22:18:20,216 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 22:18:20,217 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 22:18:20,217 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 22:18:20,217 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 22:18:20,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:18:20,218 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 22:18:20,218 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 22:18:20,219 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 22:18:20,219 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 22:18:20,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 22:18:20,220 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 22:18:20,220 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 22:18:20,220 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 22:18:20,221 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 22:18:20,221 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e1c46549da470f14361a9b2a5fb79d079bbffb4006138f4fef05b9b152f9be7 [2024-10-10 22:18:20,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 22:18:20,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 22:18:20,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 22:18:20,507 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 22:18:20,507 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 22:18:20,508 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-lopstr16/flag_loopdep_simple.i [2024-10-10 22:18:22,042 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 22:18:22,234 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 22:18:22,234 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-lopstr16/flag_loopdep_simple.i [2024-10-10 22:18:22,241 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/792369ae8/8aea6b89bda74ddaaf6e779e3e888e97/FLAG12f8711a7 [2024-10-10 22:18:22,253 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/792369ae8/8aea6b89bda74ddaaf6e779e3e888e97 [2024-10-10 22:18:22,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 22:18:22,257 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 22:18:22,259 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 22:18:22,259 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 22:18:22,264 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 22:18:22,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:18:22" (1/1) ... [2024-10-10 22:18:22,267 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4379789e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:18:22, skipping insertion in model container [2024-10-10 22:18:22,267 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:18:22" (1/1) ... [2024-10-10 22:18:22,288 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 22:18:22,448 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-lopstr16/flag_loopdep_simple.i[812,825] [2024-10-10 22:18:22,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:18:22,472 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 22:18:22,481 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-lopstr16/flag_loopdep_simple.i[812,825] [2024-10-10 22:18:22,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:18:22,503 INFO L204 MainTranslator]: Completed translation [2024-10-10 22:18:22,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:18:22 WrapperNode [2024-10-10 22:18:22,504 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 22:18:22,505 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 22:18:22,505 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 22:18:22,505 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 22:18:22,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:18:22" (1/1) ... [2024-10-10 22:18:22,518 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:18:22" (1/1) ... [2024-10-10 22:18:22,532 INFO L138 Inliner]: procedures = 17, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2024-10-10 22:18:22,533 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 22:18:22,534 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 22:18:22,534 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 22:18:22,534 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 22:18:22,543 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:18:22" (1/1) ... [2024-10-10 22:18:22,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:18:22" (1/1) ... [2024-10-10 22:18:22,545 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:18:22" (1/1) ... [2024-10-10 22:18:22,559 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-10 22:18:22,560 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:18:22" (1/1) ... [2024-10-10 22:18:22,560 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:18:22" (1/1) ... [2024-10-10 22:18:22,565 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:18:22" (1/1) ... [2024-10-10 22:18:22,568 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:18:22" (1/1) ... [2024-10-10 22:18:22,569 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:18:22" (1/1) ... [2024-10-10 22:18:22,570 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:18:22" (1/1) ... [2024-10-10 22:18:22,572 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 22:18:22,577 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 22:18:22,577 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 22:18:22,577 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 22:18:22,578 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:18:22" (1/1) ... [2024-10-10 22:18:22,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:18:22,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:18:22,606 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 22:18:22,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 22:18:22,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 22:18:22,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 22:18:22,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 22:18:22,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 22:18:22,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 22:18:22,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 22:18:22,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 22:18:22,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 22:18:22,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 22:18:22,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 22:18:22,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 22:18:22,715 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 22:18:22,717 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 22:18:22,853 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-10-10 22:18:22,853 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 22:18:22,888 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 22:18:22,888 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-10 22:18:22,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:18:22 BoogieIcfgContainer [2024-10-10 22:18:22,889 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 22:18:22,891 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 22:18:22,891 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 22:18:22,895 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 22:18:22,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 10:18:22" (1/3) ... [2024-10-10 22:18:22,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410ab3f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:18:22, skipping insertion in model container [2024-10-10 22:18:22,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:18:22" (2/3) ... [2024-10-10 22:18:22,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410ab3f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:18:22, skipping insertion in model container [2024-10-10 22:18:22,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:18:22" (3/3) ... [2024-10-10 22:18:22,899 INFO L112 eAbstractionObserver]: Analyzing ICFG flag_loopdep_simple.i [2024-10-10 22:18:22,917 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 22:18:22,918 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 22:18:22,973 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 22:18:22,980 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;@110fb1a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 22:18:22,980 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 22:18:22,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:22,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-10 22:18:22,988 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:18:22,988 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:18:22,989 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:18:22,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:18:22,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1300637357, now seen corresponding path program 1 times [2024-10-10 22:18:23,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:18:23,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689802550] [2024-10-10 22:18:23,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:23,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:18:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:23,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:18:23,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:18:23,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689802550] [2024-10-10 22:18:23,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689802550] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:18:23,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:18:23,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:18:23,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018927399] [2024-10-10 22:18:23,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:18:23,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:18:23,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:18:23,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:18:23,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:18:23,259 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) 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) [2024-10-10 22:18:23,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:18:23,285 INFO L93 Difference]: Finished difference Result 31 states and 47 transitions. [2024-10-10 22:18:23,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:18:23,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) 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 [2024-10-10 22:18:23,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:18:23,301 INFO L225 Difference]: With dead ends: 31 [2024-10-10 22:18:23,301 INFO L226 Difference]: Without dead ends: 15 [2024-10-10 22:18:23,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:18:23,309 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:18:23,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:18:23,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-10 22:18:23,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-10-10 22:18:23,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:23,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2024-10-10 22:18:23,342 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 9 [2024-10-10 22:18:23,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:18:23,342 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2024-10-10 22:18:23,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) 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) [2024-10-10 22:18:23,343 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2024-10-10 22:18:23,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-10 22:18:23,344 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:18:23,344 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:18:23,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 22:18:23,345 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:18:23,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:18:23,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1084499837, now seen corresponding path program 1 times [2024-10-10 22:18:23,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:18:23,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652622872] [2024-10-10 22:18:23,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:23,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:18:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:23,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:18:23,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:18:23,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652622872] [2024-10-10 22:18:23,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652622872] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:18:23,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:18:23,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:18:23,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685315395] [2024-10-10 22:18:23,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:18:23,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:18:23,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:18:23,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:18:23,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:18:23,439 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:23,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:18:23,472 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-10-10 22:18:23,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:18:23,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-10-10 22:18:23,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:18:23,474 INFO L225 Difference]: With dead ends: 33 [2024-10-10 22:18:23,474 INFO L226 Difference]: Without dead ends: 25 [2024-10-10 22:18:23,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:18:23,475 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:18:23,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 19 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:18:23,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-10-10 22:18:23,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2024-10-10 22:18:23,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:23,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2024-10-10 22:18:23,486 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2024-10-10 22:18:23,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:18:23,486 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2024-10-10 22:18:23,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:23,486 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2024-10-10 22:18:23,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-10 22:18:23,487 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:18:23,487 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:18:23,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 22:18:23,488 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:18:23,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:18:23,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1547209917, now seen corresponding path program 1 times [2024-10-10 22:18:23,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:18:23,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041444120] [2024-10-10 22:18:23,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:23,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:18:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:23,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:18:23,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:18:23,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041444120] [2024-10-10 22:18:23,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041444120] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:18:23,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837814206] [2024-10-10 22:18:23,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:23,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:23,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:18:23,597 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:18:23,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 22:18:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:23,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:18:23,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:18:23,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:18:23,695 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:18:23,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837814206] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:18:23,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:18:23,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-10 22:18:23,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357563567] [2024-10-10 22:18:23,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:18:23,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:18:23,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:18:23,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:18:23,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:18:23,700 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2024-10-10 22:18:23,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:18:23,719 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2024-10-10 22:18:23,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:18:23,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) Word has length 13 [2024-10-10 22:18:23,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:18:23,722 INFO L225 Difference]: With dead ends: 30 [2024-10-10 22:18:23,722 INFO L226 Difference]: Without dead ends: 16 [2024-10-10 22:18:23,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:18:23,723 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:18:23,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 31 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:18:23,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-10-10 22:18:23,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-10-10 22:18:23,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:23,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-10-10 22:18:23,730 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 13 [2024-10-10 22:18:23,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:18:23,731 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-10-10 22:18:23,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2024-10-10 22:18:23,732 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-10-10 22:18:23,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-10 22:18:23,732 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:18:23,732 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:18:23,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-10 22:18:23,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:23,934 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:18:23,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:18:23,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1938410753, now seen corresponding path program 1 times [2024-10-10 22:18:23,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:18:23,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641004963] [2024-10-10 22:18:23,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:23,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:18:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:24,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:18:24,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:18:24,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641004963] [2024-10-10 22:18:24,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641004963] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:18:24,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627414153] [2024-10-10 22:18:24,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:24,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:24,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:18:24,021 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:18:24,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 22:18:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:24,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 22:18:24,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:18:24,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:18:24,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:18:24,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:18:24,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627414153] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:18:24,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:18:24,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-10-10 22:18:24,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737707478] [2024-10-10 22:18:24,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:18:24,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-10 22:18:24,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:18:24,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-10 22:18:24,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-10 22:18:24,200 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:24,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:18:24,267 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2024-10-10 22:18:24,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 22:18:24,267 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 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 [2024-10-10 22:18:24,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:18:24,268 INFO L225 Difference]: With dead ends: 51 [2024-10-10 22:18:24,268 INFO L226 Difference]: Without dead ends: 38 [2024-10-10 22:18:24,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-10 22:18:24,269 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 23 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:18:24,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 39 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:18:24,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-10-10 22:18:24,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 22. [2024-10-10 22:18:24,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:24,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-10-10 22:18:24,281 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 13 [2024-10-10 22:18:24,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:18:24,282 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-10-10 22:18:24,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:24,282 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-10-10 22:18:24,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-10 22:18:24,283 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:18:24,283 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:18:24,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-10 22:18:24,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:24,484 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:18:24,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:18:24,485 INFO L85 PathProgramCache]: Analyzing trace with hash 308043518, now seen corresponding path program 2 times [2024-10-10 22:18:24,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:18:24,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80811771] [2024-10-10 22:18:24,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:24,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:18:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:24,627 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-10 22:18:24,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:18:24,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80811771] [2024-10-10 22:18:24,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80811771] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:18:24,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352991349] [2024-10-10 22:18:24,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:18:24,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:24,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:18:24,630 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:18:24,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 22:18:24,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:18:24,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:18:24,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-10 22:18:24,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:18:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-10 22:18:24,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:18:24,857 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-10 22:18:24,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352991349] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:18:24,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:18:24,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-10-10 22:18:24,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582183641] [2024-10-10 22:18:24,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:18:24,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-10 22:18:24,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:18:24,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-10 22:18:24,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=142, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:18:24,860 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:24,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:18:24,890 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2024-10-10 22:18:24,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-10 22:18:24,891 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 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 [2024-10-10 22:18:24,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:18:24,892 INFO L225 Difference]: With dead ends: 44 [2024-10-10 22:18:24,893 INFO L226 Difference]: Without dead ends: 28 [2024-10-10 22:18:24,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=142, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:18:24,895 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:18:24,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:18:24,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-10 22:18:24,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-10-10 22:18:24,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:24,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-10-10 22:18:24,906 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 19 [2024-10-10 22:18:24,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:18:24,907 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-10-10 22:18:24,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:24,907 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-10-10 22:18:24,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-10 22:18:24,908 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:18:24,908 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:18:24,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 22:18:25,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:25,113 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:18:25,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:18:25,113 INFO L85 PathProgramCache]: Analyzing trace with hash -326971746, now seen corresponding path program 3 times [2024-10-10 22:18:25,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:18:25,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090728890] [2024-10-10 22:18:25,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:25,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:18:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:25,479 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-10 22:18:25,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:18:25,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090728890] [2024-10-10 22:18:25,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090728890] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:18:25,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367239466] [2024-10-10 22:18:25,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:18:25,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:25,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:18:25,486 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:18:25,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 22:18:25,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-10 22:18:25,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:18:25,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 22:18:25,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:18:25,601 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-10 22:18:25,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:18:25,659 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-10 22:18:25,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367239466] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:18:25,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:18:25,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 19 [2024-10-10 22:18:25,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465403115] [2024-10-10 22:18:25,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:18:25,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-10 22:18:25,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:18:25,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-10 22:18:25,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-10-10 22:18:25,662 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:25,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:18:25,751 INFO L93 Difference]: Finished difference Result 93 states and 108 transitions. [2024-10-10 22:18:25,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-10 22:18:25,751 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 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 25 [2024-10-10 22:18:25,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:18:25,753 INFO L225 Difference]: With dead ends: 93 [2024-10-10 22:18:25,753 INFO L226 Difference]: Without dead ends: 77 [2024-10-10 22:18:25,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-10-10 22:18:25,754 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 67 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:18:25,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 67 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:18:25,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-10 22:18:25,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 41. [2024-10-10 22:18:25,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.1) internal successors, (44), 40 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:25,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2024-10-10 22:18:25,762 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 25 [2024-10-10 22:18:25,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:18:25,762 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2024-10-10 22:18:25,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:25,762 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2024-10-10 22:18:25,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-10 22:18:25,763 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:18:25,763 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:18:25,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-10 22:18:25,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-10 22:18:25,964 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:18:25,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:18:25,965 INFO L85 PathProgramCache]: Analyzing trace with hash 529727645, now seen corresponding path program 4 times [2024-10-10 22:18:25,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:18:25,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180454081] [2024-10-10 22:18:25,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:25,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:18:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-10 22:18:26,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:18:26,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180454081] [2024-10-10 22:18:26,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180454081] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:18:26,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702477097] [2024-10-10 22:18:26,269 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 22:18:26,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:26,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:18:26,271 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:18:26,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 22:18:26,356 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 22:18:26,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:18:26,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-10 22:18:26,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:18:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-10 22:18:26,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:18:26,651 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-10 22:18:26,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702477097] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:18:26,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:18:26,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 28 [2024-10-10 22:18:26,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438234696] [2024-10-10 22:18:26,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:18:26,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-10 22:18:26,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:18:26,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-10 22:18:26,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2024-10-10 22:18:26,656 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 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) [2024-10-10 22:18:26,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:18:26,836 INFO L93 Difference]: Finished difference Result 186 states and 213 transitions. [2024-10-10 22:18:26,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-10 22:18:26,837 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 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 38 [2024-10-10 22:18:26,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:18:26,838 INFO L225 Difference]: With dead ends: 186 [2024-10-10 22:18:26,838 INFO L226 Difference]: Without dead ends: 158 [2024-10-10 22:18:26,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2024-10-10 22:18:26,839 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 179 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:18:26,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 132 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:18:26,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-10-10 22:18:26,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 66. [2024-10-10 22:18:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0615384615384615) internal successors, (69), 65 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:26,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2024-10-10 22:18:26,857 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 38 [2024-10-10 22:18:26,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:18:26,857 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2024-10-10 22:18:26,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 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) [2024-10-10 22:18:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2024-10-10 22:18:26,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-10 22:18:26,859 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:18:26,859 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:18:26,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-10 22:18:27,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:27,060 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:18:27,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:18:27,061 INFO L85 PathProgramCache]: Analyzing trace with hash -329553154, now seen corresponding path program 5 times [2024-10-10 22:18:27,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:18:27,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242444778] [2024-10-10 22:18:27,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:27,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:18:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-10-10 22:18:27,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:18:27,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242444778] [2024-10-10 22:18:27,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242444778] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:18:27,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13683891] [2024-10-10 22:18:27,422 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 22:18:27,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:27,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:18:27,425 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:18:27,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-10 22:18:27,572 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-10-10 22:18:27,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:18:27,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-10 22:18:27,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:18:27,875 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-10 22:18:27,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:18:28,394 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-10 22:18:28,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13683891] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:18:28,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:18:28,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 45 [2024-10-10 22:18:28,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297668421] [2024-10-10 22:18:28,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:18:28,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-10-10 22:18:28,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:18:28,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-10-10 22:18:28,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1380, Unknown=0, NotChecked=0, Total=1980 [2024-10-10 22:18:28,398 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 45 states, 45 states have (on average 2.5555555555555554) internal successors, (115), 45 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:28,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:18:28,759 INFO L93 Difference]: Finished difference Result 371 states and 422 transitions. [2024-10-10 22:18:28,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-10 22:18:28,759 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.5555555555555554) internal successors, (115), 45 states have internal predecessors, (115), 0 states have call successors, (0), 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 63 [2024-10-10 22:18:28,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:18:28,761 INFO L225 Difference]: With dead ends: 371 [2024-10-10 22:18:28,761 INFO L226 Difference]: Without dead ends: 319 [2024-10-10 22:18:28,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=600, Invalid=1380, Unknown=0, NotChecked=0, Total=1980 [2024-10-10 22:18:28,767 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 599 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 22:18:28,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 205 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 22:18:28,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-10-10 22:18:28,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 115. [2024-10-10 22:18:28,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.0350877192982457) internal successors, (118), 114 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:28,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 118 transitions. [2024-10-10 22:18:28,779 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 118 transitions. Word has length 63 [2024-10-10 22:18:28,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:18:28,780 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 118 transitions. [2024-10-10 22:18:28,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.5555555555555554) internal successors, (115), 45 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:28,780 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 118 transitions. [2024-10-10 22:18:28,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-10 22:18:28,781 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:18:28,781 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:18:28,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-10 22:18:28,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-10 22:18:28,986 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:18:28,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:18:28,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1259011773, now seen corresponding path program 6 times [2024-10-10 22:18:28,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:18:28,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983277654] [2024-10-10 22:18:28,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:28,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:18:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:29,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2024-10-10 22:18:29,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:18:29,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983277654] [2024-10-10 22:18:29,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983277654] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:18:29,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730872917] [2024-10-10 22:18:29,416 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-10 22:18:29,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:29,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:18:29,419 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:18:29,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-10 22:18:29,499 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-10-10 22:18:29,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:18:29,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-10 22:18:29,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:18:29,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 1367 trivial. 0 not checked. [2024-10-10 22:18:29,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:18:30,191 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-10 22:18:30,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 11 [2024-10-10 22:18:30,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 1367 trivial. 0 not checked. [2024-10-10 22:18:30,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730872917] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:18:30,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:18:30,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 7] total 26 [2024-10-10 22:18:30,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668663361] [2024-10-10 22:18:30,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:18:30,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-10 22:18:30,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:18:30,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-10 22:18:30,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2024-10-10 22:18:30,219 INFO L87 Difference]: Start difference. First operand 115 states and 118 transitions. Second operand has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:30,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:18:30,562 INFO L93 Difference]: Finished difference Result 221 states and 229 transitions. [2024-10-10 22:18:30,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-10 22:18:30,563 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 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 112 [2024-10-10 22:18:30,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:18:30,564 INFO L225 Difference]: With dead ends: 221 [2024-10-10 22:18:30,564 INFO L226 Difference]: Without dead ends: 121 [2024-10-10 22:18:30,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 212 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=411, Invalid=1311, Unknown=0, NotChecked=0, Total=1722 [2024-10-10 22:18:30,567 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 37 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:18:30,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 56 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:18:30,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-10-10 22:18:30,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2024-10-10 22:18:30,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0423728813559323) internal successors, (123), 118 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:30,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2024-10-10 22:18:30,584 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 112 [2024-10-10 22:18:30,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:18:30,585 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2024-10-10 22:18:30,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:30,585 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2024-10-10 22:18:30,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-10-10 22:18:30,588 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:18:30,588 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:18:30,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-10 22:18:30,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:30,789 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:18:30,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:18:30,790 INFO L85 PathProgramCache]: Analyzing trace with hash 119331897, now seen corresponding path program 1 times [2024-10-10 22:18:30,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:18:30,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796344948] [2024-10-10 22:18:30,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:30,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:18:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:30,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1440 trivial. 0 not checked. [2024-10-10 22:18:30,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:18:30,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796344948] [2024-10-10 22:18:30,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796344948] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:18:30,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:18:30,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:18:30,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072657378] [2024-10-10 22:18:30,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:18:30,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:18:30,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:18:30,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:18:30,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:18:30,877 INFO L87 Difference]: Start difference. First operand 119 states and 123 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:30,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:18:30,893 INFO L93 Difference]: Finished difference Result 126 states and 131 transitions. [2024-10-10 22:18:30,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:18:30,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2024-10-10 22:18:30,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:18:30,895 INFO L225 Difference]: With dead ends: 126 [2024-10-10 22:18:30,895 INFO L226 Difference]: Without dead ends: 119 [2024-10-10 22:18:30,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:18:30,896 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:18:30,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 13 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:18:30,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-10-10 22:18:30,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2024-10-10 22:18:30,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0254237288135593) internal successors, (121), 118 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:30,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2024-10-10 22:18:30,913 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 116 [2024-10-10 22:18:30,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:18:30,916 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2024-10-10 22:18:30,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:30,916 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2024-10-10 22:18:30,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-10-10 22:18:30,917 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:18:30,917 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 14, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:18:30,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-10 22:18:30,918 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:18:30,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:18:30,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1370180029, now seen corresponding path program 1 times [2024-10-10 22:18:30,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:18:30,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401597893] [2024-10-10 22:18:30,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:30,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:18:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:31,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1443 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2024-10-10 22:18:31,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:18:31,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401597893] [2024-10-10 22:18:31,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401597893] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:18:31,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658689682] [2024-10-10 22:18:31,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:31,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:31,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:18:31,351 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:18:31,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-10 22:18:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:31,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-10 22:18:31,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:18:31,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1443 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2024-10-10 22:18:31,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:18:32,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1443 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2024-10-10 22:18:32,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658689682] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:18:32,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:18:32,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 46 [2024-10-10 22:18:32,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179284543] [2024-10-10 22:18:32,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:18:32,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-10-10 22:18:32,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:18:32,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-10-10 22:18:32,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=1172, Unknown=0, NotChecked=0, Total=2162 [2024-10-10 22:18:32,084 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand has 47 states, 47 states have (on average 1.297872340425532) internal successors, (61), 46 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:32,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:18:32,133 INFO L93 Difference]: Finished difference Result 238 states and 257 transitions. [2024-10-10 22:18:32,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-10 22:18:32,134 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.297872340425532) internal successors, (61), 46 states have internal predecessors, (61), 0 states have call successors, (0), 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 118 [2024-10-10 22:18:32,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:18:32,136 INFO L225 Difference]: With dead ends: 238 [2024-10-10 22:18:32,136 INFO L226 Difference]: Without dead ends: 135 [2024-10-10 22:18:32,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=990, Invalid=1172, Unknown=0, NotChecked=0, Total=2162 [2024-10-10 22:18:32,138 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:18:32,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:18:32,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-10-10 22:18:32,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2024-10-10 22:18:32,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.0223880597014925) internal successors, (137), 134 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:32,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2024-10-10 22:18:32,155 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 118 [2024-10-10 22:18:32,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:18:32,158 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2024-10-10 22:18:32,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.297872340425532) internal successors, (61), 46 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:32,158 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2024-10-10 22:18:32,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-10-10 22:18:32,162 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:18:32,163 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:18:32,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-10 22:18:32,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-10 22:18:32,367 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:18:32,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:18:32,367 INFO L85 PathProgramCache]: Analyzing trace with hash -875874493, now seen corresponding path program 2 times [2024-10-10 22:18:32,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:18:32,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542035105] [2024-10-10 22:18:32,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:32,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:18:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:33,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2024-10-10 22:18:33,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:18:33,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542035105] [2024-10-10 22:18:33,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542035105] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:18:33,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939542447] [2024-10-10 22:18:33,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:18:33,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:33,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:18:33,439 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:18:33,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-10 22:18:33,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:18:33,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:18:33,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-10 22:18:33,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:18:34,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2024-10-10 22:18:34,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:18:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2024-10-10 22:18:35,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939542447] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:18:35,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:18:35,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 94 [2024-10-10 22:18:35,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55968837] [2024-10-10 22:18:35,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:18:35,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-10-10 22:18:35,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:18:35,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-10-10 22:18:35,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4030, Invalid=4900, Unknown=0, NotChecked=0, Total=8930 [2024-10-10 22:18:35,645 INFO L87 Difference]: Start difference. First operand 135 states and 137 transitions. Second operand has 95 states, 95 states have (on average 1.1473684210526316) internal successors, (109), 94 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:35,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:18:35,739 INFO L93 Difference]: Finished difference Result 270 states and 305 transitions. [2024-10-10 22:18:35,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-10-10 22:18:35,741 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.1473684210526316) internal successors, (109), 94 states have internal predecessors, (109), 0 states have call successors, (0), 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 134 [2024-10-10 22:18:35,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:18:35,743 INFO L225 Difference]: With dead ends: 270 [2024-10-10 22:18:35,743 INFO L226 Difference]: Without dead ends: 167 [2024-10-10 22:18:35,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3749 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4030, Invalid=4900, Unknown=0, NotChecked=0, Total=8930 [2024-10-10 22:18:35,746 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:18:35,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 98 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:18:35,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-10-10 22:18:35,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-10-10 22:18:35,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.0180722891566265) internal successors, (169), 166 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:35,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2024-10-10 22:18:35,760 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 134 [2024-10-10 22:18:35,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:18:35,761 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 169 transitions. [2024-10-10 22:18:35,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 1.1473684210526316) internal successors, (109), 94 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:35,761 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 169 transitions. [2024-10-10 22:18:35,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-10-10 22:18:35,764 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:18:35,764 INFO L215 NwaCegarLoop]: trace histogram [62, 30, 30, 30, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:18:35,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-10 22:18:35,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:35,965 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:18:35,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:18:35,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1364343107, now seen corresponding path program 3 times [2024-10-10 22:18:35,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:18:35,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452252074] [2024-10-10 22:18:35,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:35,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:18:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:38,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2024-10-10 22:18:38,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:18:38,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452252074] [2024-10-10 22:18:38,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452252074] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:18:38,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471026166] [2024-10-10 22:18:38,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:18:38,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:38,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:18:38,904 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:18:38,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-10 22:18:39,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-10 22:18:39,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:18:39,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-10 22:18:39,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:18:39,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 3143 trivial. 0 not checked. [2024-10-10 22:18:39,717 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:18:40,002 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-10 22:18:40,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 11 [2024-10-10 22:18:40,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 28 proven. 120 refuted. 0 times theorem prover too weak. 3143 trivial. 0 not checked. [2024-10-10 22:18:40,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471026166] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:18:40,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:18:40,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 9, 9] total 80 [2024-10-10 22:18:40,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348551483] [2024-10-10 22:18:40,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:18:40,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-10-10 22:18:40,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:18:40,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-10-10 22:18:40,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2135, Invalid=4185, Unknown=0, NotChecked=0, Total=6320 [2024-10-10 22:18:40,069 INFO L87 Difference]: Start difference. First operand 167 states and 169 transitions. Second operand has 80 states, 80 states have (on average 1.5125) internal successors, (121), 80 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:42,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:18:42,246 INFO L93 Difference]: Finished difference Result 278 states and 283 transitions. [2024-10-10 22:18:42,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-10-10 22:18:42,247 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.5125) internal successors, (121), 80 states have internal predecessors, (121), 0 states have call successors, (0), 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 166 [2024-10-10 22:18:42,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:18:42,248 INFO L225 Difference]: With dead ends: 278 [2024-10-10 22:18:42,248 INFO L226 Difference]: Without dead ends: 175 [2024-10-10 22:18:42,252 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3208 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=6312, Invalid=14568, Unknown=0, NotChecked=0, Total=20880 [2024-10-10 22:18:42,253 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 37 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:18:42,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 100 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:18:42,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-10-10 22:18:42,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2024-10-10 22:18:42,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.0174418604651163) internal successors, (175), 172 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:42,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2024-10-10 22:18:42,266 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 166 [2024-10-10 22:18:42,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:18:42,266 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 175 transitions. [2024-10-10 22:18:42,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.5125) internal successors, (121), 80 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:42,267 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 175 transitions. [2024-10-10 22:18:42,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-10 22:18:42,268 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:18:42,268 INFO L215 NwaCegarLoop]: trace histogram [63, 30, 30, 30, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:18:42,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-10 22:18:42,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-10 22:18:42,469 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:18:42,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:18:42,470 INFO L85 PathProgramCache]: Analyzing trace with hash -570168771, now seen corresponding path program 4 times [2024-10-10 22:18:42,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:18:42,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763235911] [2024-10-10 22:18:42,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:42,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:18:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3362 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 1346 trivial. 0 not checked. [2024-10-10 22:18:45,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:18:45,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763235911] [2024-10-10 22:18:45,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763235911] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:18:45,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987877438] [2024-10-10 22:18:45,520 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 22:18:45,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:45,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:18:45,522 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:18:45,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-10 22:18:45,758 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 22:18:45,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:18:45,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-10 22:18:45,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:18:46,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3362 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2024-10-10 22:18:46,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:18:48,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3362 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2024-10-10 22:18:48,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987877438] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:18:48,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:18:48,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 33, 33] total 128 [2024-10-10 22:18:48,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075251002] [2024-10-10 22:18:48,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:18:48,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2024-10-10 22:18:48,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:18:48,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2024-10-10 22:18:48,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4160, Invalid=12096, Unknown=0, NotChecked=0, Total=16256 [2024-10-10 22:18:48,810 INFO L87 Difference]: Start difference. First operand 173 states and 175 transitions. Second operand has 128 states, 128 states have (on average 2.0703125) internal successors, (265), 128 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:49,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:18:49,777 INFO L93 Difference]: Finished difference Result 794 states and 830 transitions. [2024-10-10 22:18:49,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-10-10 22:18:49,781 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.0703125) internal successors, (265), 128 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2024-10-10 22:18:49,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:18:49,784 INFO L225 Difference]: With dead ends: 794 [2024-10-10 22:18:49,784 INFO L226 Difference]: Without dead ends: 686 [2024-10-10 22:18:49,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3906 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4160, Invalid=12096, Unknown=0, NotChecked=0, Total=16256 [2024-10-10 22:18:49,786 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 1582 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 22:18:49,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1582 Valid, 367 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 22:18:49,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2024-10-10 22:18:49,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 270. [2024-10-10 22:18:49,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 1.0111524163568772) internal successors, (272), 269 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:49,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 272 transitions. [2024-10-10 22:18:49,820 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 272 transitions. Word has length 172 [2024-10-10 22:18:49,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:18:49,820 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 272 transitions. [2024-10-10 22:18:49,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 2.0703125) internal successors, (265), 128 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:18:49,821 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 272 transitions. [2024-10-10 22:18:49,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-10-10 22:18:49,823 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:18:49,823 INFO L215 NwaCegarLoop]: trace histogram [64, 62, 62, 62, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:18:49,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-10 22:18:50,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-10 22:18:50,024 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:18:50,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:18:50,024 INFO L85 PathProgramCache]: Analyzing trace with hash -281988898, now seen corresponding path program 5 times [2024-10-10 22:18:50,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:18:50,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735244214] [2024-10-10 22:18:50,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:18:50,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:18:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:18:53,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7826 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 5746 trivial. 0 not checked. [2024-10-10 22:18:53,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:18:53,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735244214] [2024-10-10 22:18:53,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735244214] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:18:53,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174070698] [2024-10-10 22:18:53,315 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 22:18:53,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:18:53,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:18:53,317 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:18:53,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process