./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e0b57c08af7035dacaf862ca8a67d9e46c03de7c7f0732dae53a8c2546607fd5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 23:40:13,269 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 23:40:13,317 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-12 23:40:13,321 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 23:40:13,323 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 23:40:13,344 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 23:40:13,345 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 23:40:13,345 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 23:40:13,346 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 23:40:13,346 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 23:40:13,347 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 23:40:13,347 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 23:40:13,348 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 23:40:13,348 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 23:40:13,349 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 23:40:13,349 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 23:40:13,349 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 23:40:13,350 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 23:40:13,350 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 23:40:13,351 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 23:40:13,351 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 23:40:13,352 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 23:40:13,352 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 23:40:13,352 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 23:40:13,353 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 23:40:13,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 23:40:13,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 23:40:13,354 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 23:40:13,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 23:40:13,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 23:40:13,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 23:40:13,355 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 23:40:13,355 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 23:40:13,356 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 23:40:13,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 23:40:13,356 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 23:40:13,357 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 23:40:13,357 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 23:40:13,357 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 23:40:13,358 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0b57c08af7035dacaf862ca8a67d9e46c03de7c7f0732dae53a8c2546607fd5 [2024-10-12 23:40:13,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 23:40:13,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 23:40:13,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 23:40:13,667 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 23:40:13,668 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 23:40:13,678 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c [2024-10-12 23:40:15,174 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 23:40:15,382 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 23:40:15,382 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c [2024-10-12 23:40:15,391 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03fd3ab7a/051bbb855e6d4494a5475222de806e25/FLAG418ec2767 [2024-10-12 23:40:15,409 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03fd3ab7a/051bbb855e6d4494a5475222de806e25 [2024-10-12 23:40:15,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 23:40:15,414 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 23:40:15,416 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 23:40:15,416 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 23:40:15,422 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 23:40:15,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:40:15" (1/1) ... [2024-10-12 23:40:15,424 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e5d65fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:15, skipping insertion in model container [2024-10-12 23:40:15,424 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:40:15" (1/1) ... [2024-10-12 23:40:15,456 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 23:40:15,607 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/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c[1266,1279] [2024-10-12 23:40:15,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 23:40:15,676 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 23:40:15,687 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/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c[1266,1279] [2024-10-12 23:40:15,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 23:40:15,760 INFO L204 MainTranslator]: Completed translation [2024-10-12 23:40:15,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:15 WrapperNode [2024-10-12 23:40:15,761 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 23:40:15,762 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 23:40:15,762 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 23:40:15,763 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 23:40:15,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:15" (1/1) ... [2024-10-12 23:40:15,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:15" (1/1) ... [2024-10-12 23:40:15,838 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 341 [2024-10-12 23:40:15,839 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 23:40:15,840 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 23:40:15,840 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 23:40:15,840 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 23:40:15,857 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:15" (1/1) ... [2024-10-12 23:40:15,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:15" (1/1) ... [2024-10-12 23:40:15,867 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:15" (1/1) ... [2024-10-12 23:40:15,896 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 23:40:15,897 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:15" (1/1) ... [2024-10-12 23:40:15,897 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:15" (1/1) ... [2024-10-12 23:40:15,912 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:15" (1/1) ... [2024-10-12 23:40:15,918 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:15" (1/1) ... [2024-10-12 23:40:15,930 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:15" (1/1) ... [2024-10-12 23:40:15,936 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:15" (1/1) ... [2024-10-12 23:40:15,943 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 23:40:15,944 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 23:40:15,944 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 23:40:15,945 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 23:40:15,946 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:15" (1/1) ... [2024-10-12 23:40:15,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 23:40:15,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:40:15,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 23:40:15,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 23:40:16,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 23:40:16,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 23:40:16,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 23:40:16,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 23:40:16,174 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 23:40:16,176 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 23:40:16,790 INFO L? ?]: Removed 136 outVars from TransFormulas that were not future-live. [2024-10-12 23:40:16,791 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 23:40:16,830 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 23:40:16,831 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 23:40:16,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:40:16 BoogieIcfgContainer [2024-10-12 23:40:16,831 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 23:40:16,834 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 23:40:16,834 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 23:40:16,838 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 23:40:16,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:40:15" (1/3) ... [2024-10-12 23:40:16,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2faf4104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:40:16, skipping insertion in model container [2024-10-12 23:40:16,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:15" (2/3) ... [2024-10-12 23:40:16,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2faf4104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:40:16, skipping insertion in model container [2024-10-12 23:40:16,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:40:16" (3/3) ... [2024-10-12 23:40:16,841 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c [2024-10-12 23:40:16,856 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 23:40:16,856 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 23:40:16,907 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 23:40:16,912 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;@2b88b9ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 23:40:16,912 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 23:40:16,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 57 states have (on average 1.5087719298245614) internal successors, (86), 58 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:16,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-12 23:40:16,921 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:40:16,922 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:40:16,922 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:40:16,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:40:16,927 INFO L85 PathProgramCache]: Analyzing trace with hash -2100058872, now seen corresponding path program 1 times [2024-10-12 23:40:16,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:40:16,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941108526] [2024-10-12 23:40:16,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:40:16,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:40:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:40:17,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:40:17,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:40:17,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941108526] [2024-10-12 23:40:17,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941108526] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:40:17,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:40:17,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 23:40:17,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865468786] [2024-10-12 23:40:17,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:40:17,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 23:40:17,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:40:17,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 23:40:17,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 23:40:17,575 INFO L87 Difference]: Start difference. First operand has 59 states, 57 states have (on average 1.5087719298245614) internal successors, (86), 58 states have internal predecessors, (86), 0 states have call successors, (0), 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 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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) [2024-10-12 23:40:17,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:40:17,629 INFO L93 Difference]: Finished difference Result 98 states and 144 transitions. [2024-10-12 23:40:17,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 23:40:17,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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 24 [2024-10-12 23:40:17,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:40:17,642 INFO L225 Difference]: With dead ends: 98 [2024-10-12 23:40:17,643 INFO L226 Difference]: Without dead ends: 60 [2024-10-12 23:40:17,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 23:40:17,648 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:40:17,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 238 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 23:40:17,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-12 23:40:17,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-12 23:40:17,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 59 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:17,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 86 transitions. [2024-10-12 23:40:17,686 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 86 transitions. Word has length 24 [2024-10-12 23:40:17,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:40:17,687 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 86 transitions. [2024-10-12 23:40:17,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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) [2024-10-12 23:40:17,687 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 86 transitions. [2024-10-12 23:40:17,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-12 23:40:17,688 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:40:17,688 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:40:17,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 23:40:17,689 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:40:17,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:40:17,689 INFO L85 PathProgramCache]: Analyzing trace with hash -675620309, now seen corresponding path program 1 times [2024-10-12 23:40:17,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:40:17,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182326380] [2024-10-12 23:40:17,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:40:17,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:40:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:40:17,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:40:17,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:40:17,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182326380] [2024-10-12 23:40:17,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182326380] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:40:17,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:40:17,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 23:40:17,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317351142] [2024-10-12 23:40:17,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:40:17,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 23:40:17,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:40:17,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 23:40:17,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 23:40:17,858 INFO L87 Difference]: Start difference. First operand 60 states and 86 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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) [2024-10-12 23:40:17,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:40:17,887 INFO L93 Difference]: Finished difference Result 101 states and 144 transitions. [2024-10-12 23:40:17,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 23:40:17,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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) Word has length 25 [2024-10-12 23:40:17,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:40:17,889 INFO L225 Difference]: With dead ends: 101 [2024-10-12 23:40:17,889 INFO L226 Difference]: Without dead ends: 62 [2024-10-12 23:40:17,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 23:40:17,891 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:40:17,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 235 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 23:40:17,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-12 23:40:17,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-12 23:40:17,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 61 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:17,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 88 transitions. [2024-10-12 23:40:17,897 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 88 transitions. Word has length 25 [2024-10-12 23:40:17,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:40:17,898 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 88 transitions. [2024-10-12 23:40:17,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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) [2024-10-12 23:40:17,898 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 88 transitions. [2024-10-12 23:40:17,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-12 23:40:17,899 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:40:17,899 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:40:17,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 23:40:17,900 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:40:17,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:40:17,900 INFO L85 PathProgramCache]: Analyzing trace with hash -567358911, now seen corresponding path program 1 times [2024-10-12 23:40:17,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:40:17,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5819416] [2024-10-12 23:40:17,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:40:17,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:40:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:40:18,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:40:18,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:40:18,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5819416] [2024-10-12 23:40:18,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5819416] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:40:18,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:40:18,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 23:40:18,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918476695] [2024-10-12 23:40:18,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:40:18,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 23:40:18,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:40:18,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 23:40:18,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 23:40:18,211 INFO L87 Difference]: Start difference. First operand 62 states and 88 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:18,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:40:18,250 INFO L93 Difference]: Finished difference Result 103 states and 145 transitions. [2024-10-12 23:40:18,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 23:40:18,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2024-10-12 23:40:18,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:40:18,252 INFO L225 Difference]: With dead ends: 103 [2024-10-12 23:40:18,253 INFO L226 Difference]: Without dead ends: 62 [2024-10-12 23:40:18,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 23:40:18,255 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 6 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:40:18,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 223 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 23:40:18,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-12 23:40:18,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-12 23:40:18,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.4262295081967213) internal successors, (87), 61 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:18,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 87 transitions. [2024-10-12 23:40:18,267 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 87 transitions. Word has length 26 [2024-10-12 23:40:18,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:40:18,269 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 87 transitions. [2024-10-12 23:40:18,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:18,269 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 87 transitions. [2024-10-12 23:40:18,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-12 23:40:18,270 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:40:18,270 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:40:18,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 23:40:18,270 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:40:18,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:40:18,271 INFO L85 PathProgramCache]: Analyzing trace with hash 500629874, now seen corresponding path program 1 times [2024-10-12 23:40:18,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:40:18,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062517212] [2024-10-12 23:40:18,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:40:18,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:40:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:40:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:40:18,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:40:18,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062517212] [2024-10-12 23:40:18,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062517212] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:40:18,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:40:18,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 23:40:18,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495055914] [2024-10-12 23:40:18,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:40:18,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 23:40:18,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:40:18,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 23:40:18,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 23:40:18,701 INFO L87 Difference]: Start difference. First operand 62 states and 87 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:18,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:40:18,844 INFO L93 Difference]: Finished difference Result 113 states and 157 transitions. [2024-10-12 23:40:18,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 23:40:18,848 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2024-10-12 23:40:18,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:40:18,849 INFO L225 Difference]: With dead ends: 113 [2024-10-12 23:40:18,849 INFO L226 Difference]: Without dead ends: 72 [2024-10-12 23:40:18,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-12 23:40:18,851 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 88 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:40:18,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 440 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:40:18,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-12 23:40:18,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2024-10-12 23:40:18,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 70 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:18,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 99 transitions. [2024-10-12 23:40:18,861 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 99 transitions. Word has length 27 [2024-10-12 23:40:18,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:40:18,862 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 99 transitions. [2024-10-12 23:40:18,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:18,863 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 99 transitions. [2024-10-12 23:40:18,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-12 23:40:18,864 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:40:18,865 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:40:18,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 23:40:18,865 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:40:18,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:40:18,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1340996674, now seen corresponding path program 1 times [2024-10-12 23:40:18,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:40:18,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843756136] [2024-10-12 23:40:18,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:40:18,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:40:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:40:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:40:19,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:40:19,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843756136] [2024-10-12 23:40:19,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843756136] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:40:19,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:40:19,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-12 23:40:19,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246271283] [2024-10-12 23:40:19,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:40:19,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 23:40:19,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:40:19,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 23:40:19,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-12 23:40:19,627 INFO L87 Difference]: Start difference. First operand 71 states and 99 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 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) [2024-10-12 23:40:19,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:40:19,849 INFO L93 Difference]: Finished difference Result 126 states and 174 transitions. [2024-10-12 23:40:19,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 23:40:19,850 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 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 28 [2024-10-12 23:40:19,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:40:19,851 INFO L225 Difference]: With dead ends: 126 [2024-10-12 23:40:19,853 INFO L226 Difference]: Without dead ends: 76 [2024-10-12 23:40:19,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-10-12 23:40:19,854 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 92 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:40:19,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 542 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:40:19,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-12 23:40:19,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2024-10-12 23:40:19,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 74 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:19,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 104 transitions. [2024-10-12 23:40:19,867 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 104 transitions. Word has length 28 [2024-10-12 23:40:19,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:40:19,868 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 104 transitions. [2024-10-12 23:40:19,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 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) [2024-10-12 23:40:19,869 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 104 transitions. [2024-10-12 23:40:19,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-12 23:40:19,870 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:40:19,870 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:40:19,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 23:40:19,870 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:40:19,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:40:19,871 INFO L85 PathProgramCache]: Analyzing trace with hash -815201709, now seen corresponding path program 1 times [2024-10-12 23:40:19,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:40:19,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468882371] [2024-10-12 23:40:19,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:40:19,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:40:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:40:20,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:40:20,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:40:20,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468882371] [2024-10-12 23:40:20,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468882371] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:40:20,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:40:20,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 23:40:20,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926944703] [2024-10-12 23:40:20,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:40:20,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 23:40:20,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:40:20,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 23:40:20,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 23:40:20,049 INFO L87 Difference]: Start difference. First operand 75 states and 104 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 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) [2024-10-12 23:40:20,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:40:20,168 INFO L93 Difference]: Finished difference Result 158 states and 213 transitions. [2024-10-12 23:40:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 23:40:20,169 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 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 28 [2024-10-12 23:40:20,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:40:20,170 INFO L225 Difference]: With dead ends: 158 [2024-10-12 23:40:20,170 INFO L226 Difference]: Without dead ends: 104 [2024-10-12 23:40:20,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-12 23:40:20,171 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 130 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:40:20,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 248 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:40:20,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-10-12 23:40:20,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 77. [2024-10-12 23:40:20,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.394736842105263) internal successors, (106), 76 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:20,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 106 transitions. [2024-10-12 23:40:20,184 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 106 transitions. Word has length 28 [2024-10-12 23:40:20,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:40:20,185 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 106 transitions. [2024-10-12 23:40:20,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 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) [2024-10-12 23:40:20,185 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 106 transitions. [2024-10-12 23:40:20,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-12 23:40:20,189 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:40:20,190 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:40:20,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 23:40:20,190 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:40:20,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:40:20,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1351645999, now seen corresponding path program 1 times [2024-10-12 23:40:20,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:40:20,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792640070] [2024-10-12 23:40:20,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:40:20,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:40:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:40:20,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:40:20,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:40:20,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792640070] [2024-10-12 23:40:20,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792640070] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:40:20,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:40:20,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 23:40:20,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915704244] [2024-10-12 23:40:20,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:40:20,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 23:40:20,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:40:20,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 23:40:20,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 23:40:20,418 INFO L87 Difference]: Start difference. First operand 77 states and 106 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:20,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:40:20,456 INFO L93 Difference]: Finished difference Result 137 states and 187 transitions. [2024-10-12 23:40:20,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 23:40:20,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-10-12 23:40:20,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:40:20,457 INFO L225 Difference]: With dead ends: 137 [2024-10-12 23:40:20,458 INFO L226 Difference]: Without dead ends: 83 [2024-10-12 23:40:20,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 23:40:20,459 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 71 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:40:20,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 228 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 23:40:20,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-10-12 23:40:20,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-10-12 23:40:20,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.3658536585365855) internal successors, (112), 82 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:20,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 112 transitions. [2024-10-12 23:40:20,469 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 112 transitions. Word has length 29 [2024-10-12 23:40:20,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:40:20,469 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 112 transitions. [2024-10-12 23:40:20,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:20,470 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 112 transitions. [2024-10-12 23:40:20,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-12 23:40:20,470 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:40:20,470 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:40:20,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 23:40:20,471 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:40:20,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:40:20,473 INFO L85 PathProgramCache]: Analyzing trace with hash 2010434521, now seen corresponding path program 1 times [2024-10-12 23:40:20,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:40:20,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707386460] [2024-10-12 23:40:20,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:40:20,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:40:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:40:20,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:40:20,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:40:20,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707386460] [2024-10-12 23:40:20,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707386460] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:40:20,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:40:20,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 23:40:20,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110618839] [2024-10-12 23:40:20,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:40:20,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 23:40:20,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:40:20,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 23:40:20,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 23:40:20,615 INFO L87 Difference]: Start difference. First operand 83 states and 112 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:20,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:40:20,655 INFO L93 Difference]: Finished difference Result 155 states and 204 transitions. [2024-10-12 23:40:20,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 23:40:20,655 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-10-12 23:40:20,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:40:20,656 INFO L225 Difference]: With dead ends: 155 [2024-10-12 23:40:20,656 INFO L226 Difference]: Without dead ends: 95 [2024-10-12 23:40:20,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-12 23:40:20,657 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 98 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:40:20,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 226 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 23:40:20,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-10-12 23:40:20,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 85. [2024-10-12 23:40:20,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 84 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:20,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 114 transitions. [2024-10-12 23:40:20,662 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 114 transitions. Word has length 30 [2024-10-12 23:40:20,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:40:20,663 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 114 transitions. [2024-10-12 23:40:20,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:20,663 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 114 transitions. [2024-10-12 23:40:20,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-12 23:40:20,664 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:40:20,664 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:40:20,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 23:40:20,665 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:40:20,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:40:20,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1222470321, now seen corresponding path program 1 times [2024-10-12 23:40:20,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:40:20,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316968498] [2024-10-12 23:40:20,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:40:20,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:40:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:40:21,046 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:40:21,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:40:21,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316968498] [2024-10-12 23:40:21,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316968498] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:40:21,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201722957] [2024-10-12 23:40:21,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:40:21,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:40:21,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:40:21,050 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 23:40:21,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 23:40:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:40:21,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-12 23:40:21,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:40:21,554 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:40:21,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:40:21,908 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:40:21,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201722957] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:40:21,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:40:21,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-10-12 23:40:21,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121331137] [2024-10-12 23:40:21,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:40:21,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-12 23:40:21,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:40:21,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-12 23:40:21,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-12 23:40:21,911 INFO L87 Difference]: Start difference. First operand 85 states and 114 transitions. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 15 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:22,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:40:22,476 INFO L93 Difference]: Finished difference Result 199 states and 260 transitions. [2024-10-12 23:40:22,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 23:40:22,476 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 15 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-10-12 23:40:22,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:40:22,477 INFO L225 Difference]: With dead ends: 199 [2024-10-12 23:40:22,479 INFO L226 Difference]: Without dead ends: 139 [2024-10-12 23:40:22,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2024-10-12 23:40:22,480 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 320 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 23:40:22,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 202 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 23:40:22,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-10-12 23:40:22,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 109. [2024-10-12 23:40:22,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.3240740740740742) internal successors, (143), 108 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:22,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 143 transitions. [2024-10-12 23:40:22,491 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 143 transitions. Word has length 48 [2024-10-12 23:40:22,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:40:22,492 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 143 transitions. [2024-10-12 23:40:22,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 15 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:22,492 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 143 transitions. [2024-10-12 23:40:22,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-12 23:40:22,493 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:40:22,493 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:40:22,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 23:40:22,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:40:22,695 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:40:22,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:40:22,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1745266421, now seen corresponding path program 1 times [2024-10-12 23:40:22,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:40:22,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819655443] [2024-10-12 23:40:22,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:40:22,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:40:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:40:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:40:23,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:40:23,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819655443] [2024-10-12 23:40:23,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819655443] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:40:23,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897741430] [2024-10-12 23:40:23,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:40:23,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:40:23,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:40:23,685 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 23:40:23,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 23:40:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:40:23,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-10-12 23:40:23,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:40:24,301 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:40:24,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:40:25,041 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:40:25,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897741430] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:40:25,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:40:25,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8] total 19 [2024-10-12 23:40:25,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203005317] [2024-10-12 23:40:25,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:40:25,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-12 23:40:25,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:40:25,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-12 23:40:25,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-10-12 23:40:25,044 INFO L87 Difference]: Start difference. First operand 109 states and 143 transitions. Second operand has 20 states, 20 states have (on average 6.25) internal successors, (125), 19 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:25,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:40:25,510 INFO L93 Difference]: Finished difference Result 181 states and 235 transitions. [2024-10-12 23:40:25,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 23:40:25,511 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.25) internal successors, (125), 19 states have internal predecessors, (125), 0 states have call successors, (0), 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 51 [2024-10-12 23:40:25,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:40:25,512 INFO L225 Difference]: With dead ends: 181 [2024-10-12 23:40:25,512 INFO L226 Difference]: Without dead ends: 121 [2024-10-12 23:40:25,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2024-10-12 23:40:25,513 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 146 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 23:40:25,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 159 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 23:40:25,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-10-12 23:40:25,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 111. [2024-10-12 23:40:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.3181818181818181) internal successors, (145), 110 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:25,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 145 transitions. [2024-10-12 23:40:25,519 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 145 transitions. Word has length 51 [2024-10-12 23:40:25,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:40:25,519 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 145 transitions. [2024-10-12 23:40:25,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.25) internal successors, (125), 19 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:25,519 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 145 transitions. [2024-10-12 23:40:25,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-12 23:40:25,520 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:40:25,520 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:40:25,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 23:40:25,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-12 23:40:25,725 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:40:25,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:40:25,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1655283349, now seen corresponding path program 1 times [2024-10-12 23:40:25,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:40:25,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112662155] [2024-10-12 23:40:25,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:40:25,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:40:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:40:26,560 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:40:26,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:40:26,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112662155] [2024-10-12 23:40:26,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112662155] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:40:26,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113287372] [2024-10-12 23:40:26,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:40:26,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:40:26,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:40:26,566 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 23:40:26,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 23:40:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:40:26,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-10-12 23:40:26,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:40:27,172 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 36 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:40:27,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:40:27,599 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:40:27,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113287372] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:40:27,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:40:27,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 12] total 30 [2024-10-12 23:40:27,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476535271] [2024-10-12 23:40:27,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:40:27,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-12 23:40:27,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:40:27,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-12 23:40:27,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=727, Unknown=0, NotChecked=0, Total=870 [2024-10-12 23:40:27,603 INFO L87 Difference]: Start difference. First operand 111 states and 145 transitions. Second operand has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 30 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:29,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:40:29,278 INFO L93 Difference]: Finished difference Result 428 states and 554 transitions. [2024-10-12 23:40:29,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-12 23:40:29,278 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 30 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-10-12 23:40:29,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:40:29,280 INFO L225 Difference]: With dead ends: 428 [2024-10-12 23:40:29,282 INFO L226 Difference]: Without dead ends: 368 [2024-10-12 23:40:29,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=553, Invalid=2987, Unknown=0, NotChecked=0, Total=3540 [2024-10-12 23:40:29,285 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 594 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:40:29,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 565 Invalid, 1462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 23:40:29,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-10-12 23:40:29,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 227. [2024-10-12 23:40:29,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.3274336283185841) internal successors, (300), 226 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:29,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 300 transitions. [2024-10-12 23:40:29,298 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 300 transitions. Word has length 69 [2024-10-12 23:40:29,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:40:29,298 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 300 transitions. [2024-10-12 23:40:29,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 30 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:29,299 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 300 transitions. [2024-10-12 23:40:29,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-12 23:40:29,300 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:40:29,300 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:40:29,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 23:40:29,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:40:29,506 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:40:29,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:40:29,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1345056242, now seen corresponding path program 1 times [2024-10-12 23:40:29,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:40:29,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895389587] [2024-10-12 23:40:29,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:40:29,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:40:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:40:30,790 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-12 23:40:30,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:40:30,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895389587] [2024-10-12 23:40:30,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895389587] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:40:30,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:40:30,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 23:40:30,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633676633] [2024-10-12 23:40:30,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:40:30,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 23:40:30,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:40:30,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 23:40:30,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 23:40:30,793 INFO L87 Difference]: Start difference. First operand 227 states and 300 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:30,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:40:30,943 INFO L93 Difference]: Finished difference Result 394 states and 523 transitions. [2024-10-12 23:40:30,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 23:40:30,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-12 23:40:30,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:40:30,945 INFO L225 Difference]: With dead ends: 394 [2024-10-12 23:40:30,945 INFO L226 Difference]: Without dead ends: 216 [2024-10-12 23:40:30,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 23:40:30,946 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 76 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:40:30,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 69 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:40:30,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-10-12 23:40:30,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-10-12 23:40:30,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.3255813953488371) internal successors, (285), 215 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:30,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 285 transitions. [2024-10-12 23:40:30,954 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 285 transitions. Word has length 70 [2024-10-12 23:40:30,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:40:30,956 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 285 transitions. [2024-10-12 23:40:30,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:30,956 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 285 transitions. [2024-10-12 23:40:30,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-12 23:40:30,957 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:40:30,957 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:40:30,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 23:40:30,958 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:40:30,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:40:30,958 INFO L85 PathProgramCache]: Analyzing trace with hash 2145830129, now seen corresponding path program 1 times [2024-10-12 23:40:30,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:40:30,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138364194] [2024-10-12 23:40:30,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:40:30,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:40:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:40:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:40:33,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:40:33,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138364194] [2024-10-12 23:40:33,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138364194] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:40:33,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346890366] [2024-10-12 23:40:33,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:40:33,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:40:33,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:40:33,063 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 23:40:33,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 23:40:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:40:33,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-10-12 23:40:33,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:40:33,875 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:40:33,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:40:34,915 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:40:34,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346890366] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:40:34,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:40:34,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2024-10-12 23:40:34,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180989250] [2024-10-12 23:40:34,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:40:34,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-12 23:40:34,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:40:34,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-12 23:40:34,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2024-10-12 23:40:34,921 INFO L87 Difference]: Start difference. First operand 216 states and 285 transitions. Second operand has 36 states, 36 states have (on average 4.611111111111111) internal successors, (166), 35 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:36,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:40:36,430 INFO L93 Difference]: Finished difference Result 1012 states and 1328 transitions. [2024-10-12 23:40:36,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-10-12 23:40:36,431 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.611111111111111) internal successors, (166), 35 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-10-12 23:40:36,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:40:36,435 INFO L225 Difference]: With dead ends: 1012 [2024-10-12 23:40:36,435 INFO L226 Difference]: Without dead ends: 845 [2024-10-12 23:40:36,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1212 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=625, Invalid=3407, Unknown=0, NotChecked=0, Total=4032 [2024-10-12 23:40:36,438 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 723 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 23:40:36,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 600 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 23:40:36,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2024-10-12 23:40:36,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 533. [2024-10-12 23:40:36,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 532 states have (on average 1.3327067669172932) internal successors, (709), 532 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:36,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 709 transitions. [2024-10-12 23:40:36,456 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 709 transitions. Word has length 71 [2024-10-12 23:40:36,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:40:36,457 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 709 transitions. [2024-10-12 23:40:36,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.611111111111111) internal successors, (166), 35 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:36,457 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 709 transitions. [2024-10-12 23:40:36,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-12 23:40:36,458 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:40:36,458 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:40:36,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 23:40:36,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:40:36,659 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:40:36,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:40:36,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1407941793, now seen corresponding path program 1 times [2024-10-12 23:40:36,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:40:36,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486961132] [2024-10-12 23:40:36,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:40:36,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:40:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:40:37,176 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:40:37,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:40:37,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486961132] [2024-10-12 23:40:37,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486961132] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:40:37,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:40:37,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 23:40:37,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627655422] [2024-10-12 23:40:37,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:40:37,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 23:40:37,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:40:37,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 23:40:37,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 23:40:37,182 INFO L87 Difference]: Start difference. First operand 533 states and 709 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:37,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:40:37,393 INFO L93 Difference]: Finished difference Result 1249 states and 1656 transitions. [2024-10-12 23:40:37,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 23:40:37,393 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2024-10-12 23:40:37,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:40:37,396 INFO L225 Difference]: With dead ends: 1249 [2024-10-12 23:40:37,396 INFO L226 Difference]: Without dead ends: 756 [2024-10-12 23:40:37,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 23:40:37,397 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 80 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 23:40:37,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 133 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 23:40:37,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2024-10-12 23:40:37,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 754. [2024-10-12 23:40:37,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.3160690571049136) internal successors, (991), 753 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:37,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 991 transitions. [2024-10-12 23:40:37,414 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 991 transitions. Word has length 72 [2024-10-12 23:40:37,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:40:37,414 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 991 transitions. [2024-10-12 23:40:37,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:37,415 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 991 transitions. [2024-10-12 23:40:37,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-12 23:40:37,415 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:40:37,416 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:40:37,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 23:40:37,416 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:40:37,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:40:37,416 INFO L85 PathProgramCache]: Analyzing trace with hash -233629383, now seen corresponding path program 1 times [2024-10-12 23:40:37,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:40:37,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464740852] [2024-10-12 23:40:37,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:40:37,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:40:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:40:37,916 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 23:40:37,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:40:37,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464740852] [2024-10-12 23:40:37,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464740852] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:40:37,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:40:37,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 23:40:37,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319857182] [2024-10-12 23:40:37,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:40:37,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 23:40:37,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:40:37,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 23:40:37,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 23:40:37,920 INFO L87 Difference]: Start difference. First operand 754 states and 991 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:38,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:40:38,084 INFO L93 Difference]: Finished difference Result 1470 states and 1934 transitions. [2024-10-12 23:40:38,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 23:40:38,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-12 23:40:38,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:40:38,088 INFO L225 Difference]: With dead ends: 1470 [2024-10-12 23:40:38,089 INFO L226 Difference]: Without dead ends: 756 [2024-10-12 23:40:38,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-12 23:40:38,092 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 97 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:40:38,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 67 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 23:40:38,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2024-10-12 23:40:38,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 756. [2024-10-12 23:40:38,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 755 states have (on average 1.3152317880794702) internal successors, (993), 755 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:38,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 993 transitions. [2024-10-12 23:40:38,110 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 993 transitions. Word has length 73 [2024-10-12 23:40:38,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:40:38,110 INFO L471 AbstractCegarLoop]: Abstraction has 756 states and 993 transitions. [2024-10-12 23:40:38,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:38,111 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 993 transitions. [2024-10-12 23:40:38,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-12 23:40:38,112 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:40:38,112 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:40:38,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 23:40:38,112 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:40:38,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:40:38,113 INFO L85 PathProgramCache]: Analyzing trace with hash -991709578, now seen corresponding path program 2 times [2024-10-12 23:40:38,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:40:38,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636793245] [2024-10-12 23:40:38,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:40:38,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:40:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:40:38,782 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 23:40:38,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:40:38,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636793245] [2024-10-12 23:40:38,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636793245] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:40:38,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927364230] [2024-10-12 23:40:38,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 23:40:38,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:40:38,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:40:38,785 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 23:40:38,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 23:40:39,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 23:40:39,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 23:40:39,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-10-12 23:40:39,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:40:39,757 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 82 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 23:40:39,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:40:40,528 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 74 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 23:40:40,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927364230] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:40:40,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:40:40,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 14] total 29 [2024-10-12 23:40:40,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357763749] [2024-10-12 23:40:40,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:40:40,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-12 23:40:40,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:40:40,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-12 23:40:40,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2024-10-12 23:40:40,531 INFO L87 Difference]: Start difference. First operand 756 states and 993 transitions. Second operand has 29 states, 29 states have (on average 7.551724137931035) internal successors, (219), 29 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:41,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:40:41,903 INFO L93 Difference]: Finished difference Result 2482 states and 3262 transitions. [2024-10-12 23:40:41,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-12 23:40:41,904 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.551724137931035) internal successors, (219), 29 states have internal predecessors, (219), 0 states have call successors, (0), 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 90 [2024-10-12 23:40:41,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:40:41,910 INFO L225 Difference]: With dead ends: 2482 [2024-10-12 23:40:41,911 INFO L226 Difference]: Without dead ends: 1768 [2024-10-12 23:40:41,913 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=300, Invalid=1770, Unknown=0, NotChecked=0, Total=2070 [2024-10-12 23:40:41,913 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 201 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 1945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:40:41,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 717 Invalid, 1945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 23:40:41,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2024-10-12 23:40:41,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1666. [2024-10-12 23:40:41,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1665 states have (on average 1.3033033033033032) internal successors, (2170), 1665 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:41,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 2170 transitions. [2024-10-12 23:40:41,957 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 2170 transitions. Word has length 90 [2024-10-12 23:40:41,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:40:41,957 INFO L471 AbstractCegarLoop]: Abstraction has 1666 states and 2170 transitions. [2024-10-12 23:40:41,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.551724137931035) internal successors, (219), 29 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:40:41,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 2170 transitions. [2024-10-12 23:40:41,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-12 23:40:41,960 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:40:41,960 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:40:41,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 23:40:42,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-12 23:40:42,161 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:40:42,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:40:42,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1269954600, now seen corresponding path program 3 times [2024-10-12 23:40:42,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:40:42,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115611971] [2024-10-12 23:40:42,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:40:42,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:40:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:40:43,809 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 83 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-12 23:40:43,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:40:43,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115611971] [2024-10-12 23:40:43,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115611971] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:40:43,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120126910] [2024-10-12 23:40:43,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 23:40:43,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:40:43,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:40:43,812 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 23:40:43,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 23:40:44,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-12 23:40:44,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 23:40:44,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 220 conjuncts are in the unsatisfiable core [2024-10-12 23:40:44,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:40:45,702 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 77 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-12 23:40:45,702 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:40:48,352 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 59 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 23:40:48,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120126910] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:40:48,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:40:48,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 16, 32] total 53 [2024-10-12 23:40:48,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248228146] [2024-10-12 23:40:48,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:40:48,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-10-12 23:40:48,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:40:48,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-10-12 23:40:48,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=2448, Unknown=0, NotChecked=0, Total=2756 [2024-10-12 23:40:48,357 INFO L87 Difference]: Start difference. First operand 1666 states and 2170 transitions. Second operand has 53 states, 53 states have (on average 4.037735849056604) internal successors, (214), 53 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:41:00,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:41:00,703 INFO L93 Difference]: Finished difference Result 3948 states and 5138 transitions. [2024-10-12 23:41:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2024-10-12 23:41:00,704 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.037735849056604) internal successors, (214), 53 states have internal predecessors, (214), 0 states have call successors, (0), 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 91 [2024-10-12 23:41:00,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:41:00,715 INFO L225 Difference]: With dead ends: 3948 [2024-10-12 23:41:00,716 INFO L226 Difference]: Without dead ends: 2262 [2024-10-12 23:41:00,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14549 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=3417, Invalid=45203, Unknown=0, NotChecked=0, Total=48620 [2024-10-12 23:41:00,733 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 557 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 6896 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 6934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 6896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-12 23:41:00,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 613 Invalid, 6934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 6896 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-12 23:41:00,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2024-10-12 23:41:00,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1888. [2024-10-12 23:41:00,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 1.2655007949125596) internal successors, (2388), 1887 states have internal predecessors, (2388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:41:00,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2388 transitions. [2024-10-12 23:41:00,795 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2388 transitions. Word has length 91 [2024-10-12 23:41:00,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:41:00,796 INFO L471 AbstractCegarLoop]: Abstraction has 1888 states and 2388 transitions. [2024-10-12 23:41:00,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.037735849056604) internal successors, (214), 53 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:41:00,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2388 transitions. [2024-10-12 23:41:00,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-12 23:41:00,797 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:41:00,798 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:41:00,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-12 23:41:00,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-12 23:41:00,998 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:41:00,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:41:00,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1477605391, now seen corresponding path program 2 times [2024-10-12 23:41:00,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:41:00,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939606043] [2024-10-12 23:41:00,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:41:00,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:41:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:41:01,807 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 83 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 23:41:01,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:41:01,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939606043] [2024-10-12 23:41:01,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939606043] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 23:41:01,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910307555] [2024-10-12 23:41:01,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 23:41:01,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:41:01,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 23:41:01,812 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 23:41:01,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 23:41:02,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 23:41:02,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 23:41:02,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-10-12 23:41:02,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 23:41:02,905 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-12 23:41:02,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 23:41:04,060 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 29 proven. 58 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 23:41:04,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910307555] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 23:41:04,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 23:41:04,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 16] total 30 [2024-10-12 23:41:04,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266495939] [2024-10-12 23:41:04,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 23:41:04,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-12 23:41:04,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:41:04,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-12 23:41:04,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2024-10-12 23:41:04,065 INFO L87 Difference]: Start difference. First operand 1888 states and 2388 transitions. Second operand has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 30 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:41:06,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:41:06,427 INFO L93 Difference]: Finished difference Result 4641 states and 5914 transitions. [2024-10-12 23:41:06,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-10-12 23:41:06,428 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 30 states have internal predecessors, (221), 0 states have call successors, (0), 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 94 [2024-10-12 23:41:06,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:41:06,438 INFO L225 Difference]: With dead ends: 4641 [2024-10-12 23:41:06,439 INFO L226 Difference]: Without dead ends: 2795 [2024-10-12 23:41:06,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1896 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=968, Invalid=6004, Unknown=0, NotChecked=0, Total=6972 [2024-10-12 23:41:06,445 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 622 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 2235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 23:41:06,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 734 Invalid, 2235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 23:41:06,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2024-10-12 23:41:06,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 2512. [2024-10-12 23:41:06,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2512 states, 2511 states have (on average 1.2560732775786538) internal successors, (3154), 2511 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:41:06,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2512 states to 2512 states and 3154 transitions. [2024-10-12 23:41:06,511 INFO L78 Accepts]: Start accepts. Automaton has 2512 states and 3154 transitions. Word has length 94 [2024-10-12 23:41:06,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:41:06,511 INFO L471 AbstractCegarLoop]: Abstraction has 2512 states and 3154 transitions. [2024-10-12 23:41:06,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 30 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:41:06,512 INFO L276 IsEmpty]: Start isEmpty. Operand 2512 states and 3154 transitions. [2024-10-12 23:41:06,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-12 23:41:06,513 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 23:41:06,513 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:41:06,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 23:41:06,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 23:41:06,714 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 23:41:06,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 23:41:06,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1242406473, now seen corresponding path program 1 times [2024-10-12 23:41:06,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 23:41:06,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330602158] [2024-10-12 23:41:06,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 23:41:06,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 23:41:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 23:41:07,342 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 23:41:07,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 23:41:07,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330602158] [2024-10-12 23:41:07,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330602158] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 23:41:07,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 23:41:07,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 23:41:07,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654914878] [2024-10-12 23:41:07,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 23:41:07,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 23:41:07,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 23:41:07,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 23:41:07,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 23:41:07,347 INFO L87 Difference]: Start difference. First operand 2512 states and 3154 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:41:07,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 23:41:07,378 INFO L93 Difference]: Finished difference Result 2598 states and 3248 transitions. [2024-10-12 23:41:07,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 23:41:07,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 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 95 [2024-10-12 23:41:07,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 23:41:07,379 INFO L225 Difference]: With dead ends: 2598 [2024-10-12 23:41:07,379 INFO L226 Difference]: Without dead ends: 0 [2024-10-12 23:41:07,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 23:41:07,382 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 4 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 23:41:07,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 258 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 23:41:07,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-12 23:41:07,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-12 23:41:07,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:41:07,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-12 23:41:07,384 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 95 [2024-10-12 23:41:07,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 23:41:07,384 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 23:41:07,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 23:41:07,385 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-12 23:41:07,385 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-12 23:41:07,388 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 23:41:07,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 23:41:07,393 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 23:41:07,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-12 23:41:07,444 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 23:41:07,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 11:41:07 BoogieIcfgContainer [2024-10-12 23:41:07,462 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 23:41:07,462 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 23:41:07,462 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 23:41:07,462 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 23:41:07,463 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:40:16" (3/4) ... [2024-10-12 23:41:07,465 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-12 23:41:07,477 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-10-12 23:41:07,479 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-12 23:41:07,480 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-12 23:41:07,480 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-12 23:41:07,607 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-12 23:41:07,608 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-12 23:41:07,608 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 23:41:07,608 INFO L158 Benchmark]: Toolchain (without parser) took 52194.75ms. Allocated memory was 146.8MB in the beginning and 931.1MB in the end (delta: 784.3MB). Free memory was 94.4MB in the beginning and 774.0MB in the end (delta: -679.6MB). Peak memory consumption was 105.2MB. Max. memory is 16.1GB. [2024-10-12 23:41:07,609 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 146.8MB. Free memory is still 123.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 23:41:07,609 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.91ms. Allocated memory is still 146.8MB. Free memory was 94.4MB in the beginning and 78.2MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-12 23:41:07,609 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.80ms. Allocated memory is still 146.8MB. Free memory was 78.2MB in the beginning and 71.9MB in the end (delta: 6.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-12 23:41:07,609 INFO L158 Benchmark]: Boogie Preprocessor took 103.86ms. Allocated memory is still 146.8MB. Free memory was 71.9MB in the beginning and 67.6MB in the end (delta: 4.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-12 23:41:07,609 INFO L158 Benchmark]: RCFGBuilder took 887.33ms. Allocated memory was 146.8MB in the beginning and 184.5MB in the end (delta: 37.7MB). Free memory was 67.6MB in the beginning and 135.1MB in the end (delta: -67.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-10-12 23:41:07,610 INFO L158 Benchmark]: TraceAbstraction took 50627.73ms. Allocated memory was 184.5MB in the beginning and 931.1MB in the end (delta: 746.6MB). Free memory was 134.0MB in the beginning and 782.4MB in the end (delta: -648.4MB). Peak memory consumption was 99.1MB. Max. memory is 16.1GB. [2024-10-12 23:41:07,610 INFO L158 Benchmark]: Witness Printer took 145.56ms. Allocated memory is still 931.1MB. Free memory was 782.4MB in the beginning and 774.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-12 23:41:07,613 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 146.8MB. Free memory is still 123.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 345.91ms. Allocated memory is still 146.8MB. Free memory was 94.4MB in the beginning and 78.2MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.80ms. Allocated memory is still 146.8MB. Free memory was 78.2MB in the beginning and 71.9MB in the end (delta: 6.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 103.86ms. Allocated memory is still 146.8MB. Free memory was 71.9MB in the beginning and 67.6MB in the end (delta: 4.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 887.33ms. Allocated memory was 146.8MB in the beginning and 184.5MB in the end (delta: 37.7MB). Free memory was 67.6MB in the beginning and 135.1MB in the end (delta: -67.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 50627.73ms. Allocated memory was 184.5MB in the beginning and 931.1MB in the end (delta: 746.6MB). Free memory was 134.0MB in the beginning and 782.4MB in the end (delta: -648.4MB). Peak memory consumption was 99.1MB. Max. memory is 16.1GB. * Witness Printer took 145.56ms. Allocated memory is still 931.1MB. Free memory was 782.4MB in the beginning and 774.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 50.5s, OverallIterations: 19, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 21.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3905 SdHoareTripleChecker+Valid, 8.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3905 mSDsluCounter, 6497 SdHoareTripleChecker+Invalid, 7.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5504 mSDsCounter, 134 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15939 IncrementalHoareTripleChecker+Invalid, 16073 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 134 mSolverCounterUnsat, 993 mSDtfsCounter, 15939 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1494 GetRequests, 919 SyntacticMatches, 2 SemanticMatches, 573 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19275 ImplicationChecksByTransitivity, 16.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2512occurred in iteration=18, InterpolantAutomatonStates: 433, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 1293 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 22.2s InterpolantComputationTime, 1555 NumberOfCodeBlocks, 1534 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 2036 ConstructedInterpolants, 0 QuantifiedInterpolants, 17352 SizeOfPredicates, 34 NumberOfNonLiveVariables, 3721 ConjunctsInSsa, 589 ConjunctsInUnsatCore, 33 InterpolantComputations, 12 PerfectInterpolantSequences, 1257/1493 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 87]: Loop Invariant Derived loop invariant: ((((((((var_12 == 1) && (state_28 == 0)) && (state_8 == 0)) && (state_60 == 0)) && (state_15 == 0)) && (var_22 == 1)) && (mask_SORT_1 == 1)) && (var_7 == 0)) RESULT: Ultimate proved your program to be correct! [2024-10-12 23:41:07,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE