./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/MultCommutative-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/recursive/MultCommutative-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 02:07:38,677 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 02:07:38,736 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 02:07:38,742 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 02:07:38,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 02:07:38,767 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 02:07:38,768 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 02:07:38,768 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 02:07:38,768 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 02:07:38,769 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 02:07:38,769 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 02:07:38,769 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 02:07:38,770 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 02:07:38,772 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 02:07:38,772 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 02:07:38,772 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 02:07:38,773 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 02:07:38,773 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 02:07:38,773 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 02:07:38,773 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 02:07:38,773 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 02:07:38,775 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 02:07:38,775 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 02:07:38,776 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 02:07:38,776 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 02:07:38,776 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 02:07:38,776 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 02:07:38,776 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 02:07:38,777 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 02:07:38,777 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 02:07:38,777 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 02:07:38,777 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 02:07:38,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:07:38,777 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 02:07:38,777 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 02:07:38,778 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 02:07:38,778 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 02:07:38,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 02:07:38,778 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 02:07:38,778 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 02:07:38,778 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 02:07:38,780 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 02:07:38,780 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd [2024-11-22 02:07:38,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 02:07:39,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 02:07:39,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 02:07:39,006 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 02:07:39,006 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 02:07:39,007 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/MultCommutative-2.c [2024-11-22 02:07:40,179 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 02:07:40,339 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 02:07:40,339 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c [2024-11-22 02:07:40,345 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29cf605f9/923cfd6e3f2241d5b40563b798c92dfd/FLAG66e23dae4 [2024-11-22 02:07:40,752 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29cf605f9/923cfd6e3f2241d5b40563b798c92dfd [2024-11-22 02:07:40,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 02:07:40,757 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 02:07:40,759 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 02:07:40,759 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 02:07:40,763 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 02:07:40,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:07:40" (1/1) ... [2024-11-22 02:07:40,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f49671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:40, skipping insertion in model container [2024-11-22 02:07:40,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:07:40" (1/1) ... [2024-11-22 02:07:40,786 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 02:07:40,927 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2024-11-22 02:07:40,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:07:40,939 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 02:07:40,950 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2024-11-22 02:07:40,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:07:40,964 INFO L204 MainTranslator]: Completed translation [2024-11-22 02:07:40,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:40 WrapperNode [2024-11-22 02:07:40,964 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 02:07:40,965 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 02:07:40,965 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 02:07:40,965 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 02:07:40,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:40" (1/1) ... [2024-11-22 02:07:40,975 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:40" (1/1) ... [2024-11-22 02:07:40,987 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2024-11-22 02:07:40,987 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 02:07:40,988 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 02:07:40,988 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 02:07:40,988 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 02:07:40,996 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:40" (1/1) ... [2024-11-22 02:07:40,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:40" (1/1) ... [2024-11-22 02:07:40,997 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:40" (1/1) ... [2024-11-22 02:07:41,008 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 02:07:41,008 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:40" (1/1) ... [2024-11-22 02:07:41,008 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:40" (1/1) ... [2024-11-22 02:07:41,015 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:40" (1/1) ... [2024-11-22 02:07:41,017 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:40" (1/1) ... [2024-11-22 02:07:41,018 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:40" (1/1) ... [2024-11-22 02:07:41,020 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:40" (1/1) ... [2024-11-22 02:07:41,021 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 02:07:41,024 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 02:07:41,024 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 02:07:41,024 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 02:07:41,025 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:40" (1/1) ... [2024-11-22 02:07:41,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:07:41,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:41,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 02:07:41,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 02:07:41,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 02:07:41,097 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2024-11-22 02:07:41,097 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2024-11-22 02:07:41,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 02:07:41,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 02:07:41,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 02:07:41,146 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 02:07:41,148 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 02:07:41,283 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-22 02:07:41,284 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 02:07:41,297 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 02:07:41,298 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 02:07:41,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:07:41 BoogieIcfgContainer [2024-11-22 02:07:41,299 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 02:07:41,301 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 02:07:41,301 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 02:07:41,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 02:07:41,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:07:40" (1/3) ... [2024-11-22 02:07:41,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425cad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:07:41, skipping insertion in model container [2024-11-22 02:07:41,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:40" (2/3) ... [2024-11-22 02:07:41,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425cad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:07:41, skipping insertion in model container [2024-11-22 02:07:41,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:07:41" (3/3) ... [2024-11-22 02:07:41,306 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2024-11-22 02:07:41,317 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 02:07:41,318 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 02:07:41,361 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 02:07:41,367 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;@392b3010, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 02:07:41,367 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 02:07:41,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-22 02:07:41,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-22 02:07:41,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:41,380 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:41,380 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:41,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:41,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1513944532, now seen corresponding path program 1 times [2024-11-22 02:07:41,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:41,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607750733] [2024-11-22 02:07:41,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:07:41,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:41,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 02:07:41,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:41,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607750733] [2024-11-22 02:07:41,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607750733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:07:41,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:07:41,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 02:07:41,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220323447] [2024-11-22 02:07:41,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:07:41,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 02:07:41,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:41,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 02:07:41,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:07:41,728 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 02:07:41,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:41,802 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2024-11-22 02:07:41,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 02:07:41,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-11-22 02:07:41,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:41,809 INFO L225 Difference]: With dead ends: 36 [2024-11-22 02:07:41,809 INFO L226 Difference]: Without dead ends: 26 [2024-11-22 02:07:41,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-22 02:07:41,814 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:41,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 138 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:07:41,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-22 02:07:41,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-11-22 02:07:41,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-22 02:07:41,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2024-11-22 02:07:41,849 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 20 [2024-11-22 02:07:41,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:41,849 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2024-11-22 02:07:41,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 02:07:41,850 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2024-11-22 02:07:41,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-22 02:07:41,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:41,852 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:41,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 02:07:41,853 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:41,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:41,853 INFO L85 PathProgramCache]: Analyzing trace with hash 555960324, now seen corresponding path program 1 times [2024-11-22 02:07:41,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:41,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632969609] [2024-11-22 02:07:41,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:07:41,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 02:07:42,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:42,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632969609] [2024-11-22 02:07:42,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632969609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:07:42,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:07:42,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 02:07:42,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549001984] [2024-11-22 02:07:42,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:07:42,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 02:07:42,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:42,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 02:07:42,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-22 02:07:42,004 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 02:07:42,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:42,066 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2024-11-22 02:07:42,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:07:42,066 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2024-11-22 02:07:42,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:42,067 INFO L225 Difference]: With dead ends: 35 [2024-11-22 02:07:42,067 INFO L226 Difference]: Without dead ends: 31 [2024-11-22 02:07:42,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-22 02:07:42,068 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:42,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 141 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:07:42,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-22 02:07:42,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2024-11-22 02:07:42,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-22 02:07:42,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2024-11-22 02:07:42,075 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 26 [2024-11-22 02:07:42,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:42,076 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2024-11-22 02:07:42,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 02:07:42,076 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2024-11-22 02:07:42,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-22 02:07:42,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:42,077 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:42,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 02:07:42,077 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:42,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:42,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1817517416, now seen corresponding path program 1 times [2024-11-22 02:07:42,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:42,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295987744] [2024-11-22 02:07:42,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:07:42,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:42,147 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 02:07:42,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:42,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295987744] [2024-11-22 02:07:42,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295987744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:42,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223296061] [2024-11-22 02:07:42,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:07:42,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:42,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:42,152 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:42,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 02:07:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:42,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 02:07:42,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:42,247 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 02:07:42,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:42,333 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 02:07:42,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223296061] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:42,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:42,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-11-22 02:07:42,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373953402] [2024-11-22 02:07:42,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:42,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 02:07:42,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:42,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 02:07:42,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:07:42,335 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 02:07:42,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:42,412 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2024-11-22 02:07:42,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 02:07:42,413 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2024-11-22 02:07:42,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:42,414 INFO L225 Difference]: With dead ends: 35 [2024-11-22 02:07:42,415 INFO L226 Difference]: Without dead ends: 27 [2024-11-22 02:07:42,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:07:42,417 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:42,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 49 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:07:42,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-22 02:07:42,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2024-11-22 02:07:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-22 02:07:42,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2024-11-22 02:07:42,427 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 27 [2024-11-22 02:07:42,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:42,427 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2024-11-22 02:07:42,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 02:07:42,428 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2024-11-22 02:07:42,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-22 02:07:42,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:42,429 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:42,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 02:07:42,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:42,630 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:42,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:42,631 INFO L85 PathProgramCache]: Analyzing trace with hash 2011031750, now seen corresponding path program 2 times [2024-11-22 02:07:42,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:42,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617768351] [2024-11-22 02:07:42,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:07:42,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:42,644 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:07:42,644 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:42,714 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 02:07:42,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:42,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617768351] [2024-11-22 02:07:42,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617768351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:07:42,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:07:42,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:07:42,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726765018] [2024-11-22 02:07:42,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:07:42,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:07:42,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:42,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:07:42,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:07:42,719 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-22 02:07:42,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:42,763 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2024-11-22 02:07:42,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:07:42,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2024-11-22 02:07:42,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:42,764 INFO L225 Difference]: With dead ends: 29 [2024-11-22 02:07:42,764 INFO L226 Difference]: Without dead ends: 25 [2024-11-22 02:07:42,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:07:42,765 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:42,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 38 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:07:42,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-22 02:07:42,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-22 02:07:42,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-22 02:07:42,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2024-11-22 02:07:42,773 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 27 [2024-11-22 02:07:42,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:42,773 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2024-11-22 02:07:42,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-22 02:07:42,774 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2024-11-22 02:07:42,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-22 02:07:42,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:42,776 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:42,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 02:07:42,777 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:42,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:42,777 INFO L85 PathProgramCache]: Analyzing trace with hash 345194942, now seen corresponding path program 1 times [2024-11-22 02:07:42,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:42,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126177136] [2024-11-22 02:07:42,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:07:42,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:42,905 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-22 02:07:42,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:42,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126177136] [2024-11-22 02:07:42,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126177136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:42,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805252686] [2024-11-22 02:07:42,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:07:42,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:42,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:42,910 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:42,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 02:07:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:42,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 02:07:42,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:42,990 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-22 02:07:42,990 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:43,115 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-22 02:07:43,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805252686] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:43,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:43,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2024-11-22 02:07:43,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882281264] [2024-11-22 02:07:43,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:43,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 02:07:43,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:43,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 02:07:43,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-22 02:07:43,117 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-22 02:07:43,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:43,243 INFO L93 Difference]: Finished difference Result 47 states and 63 transitions. [2024-11-22 02:07:43,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 02:07:43,244 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) Word has length 46 [2024-11-22 02:07:43,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:43,245 INFO L225 Difference]: With dead ends: 47 [2024-11-22 02:07:43,245 INFO L226 Difference]: Without dead ends: 39 [2024-11-22 02:07:43,246 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-11-22 02:07:43,246 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 12 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:43,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 118 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:07:43,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-22 02:07:43,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2024-11-22 02:07:43,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 24 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 6 states have return successors, (16), 7 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-22 02:07:43,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2024-11-22 02:07:43,255 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 46 [2024-11-22 02:07:43,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:43,255 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2024-11-22 02:07:43,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-22 02:07:43,256 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2024-11-22 02:07:43,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-22 02:07:43,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:43,257 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:43,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 02:07:43,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:43,458 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:43,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:43,459 INFO L85 PathProgramCache]: Analyzing trace with hash -760266050, now seen corresponding path program 3 times [2024-11-22 02:07:43,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:43,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19854038] [2024-11-22 02:07:43,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:07:43,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:43,477 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 02:07:43,477 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:43,894 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-22 02:07:43,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:43,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19854038] [2024-11-22 02:07:43,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19854038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:43,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135524074] [2024-11-22 02:07:43,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:07:43,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:43,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:43,897 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:43,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 02:07:43,938 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 02:07:43,938 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:43,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-22 02:07:43,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:44,195 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 02:07:44,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:44,877 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 02:07:44,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135524074] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:44,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:44,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 17] total 35 [2024-11-22 02:07:44,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629125460] [2024-11-22 02:07:44,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:44,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-22 02:07:44,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:44,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-22 02:07:44,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1057, Unknown=0, NotChecked=0, Total=1190 [2024-11-22 02:07:44,880 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 35 states, 32 states have (on average 1.65625) internal successors, (53), 25 states have internal predecessors, (53), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (11), 10 states have call predecessors, (11), 8 states have call successors, (11) [2024-11-22 02:07:45,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:45,305 INFO L93 Difference]: Finished difference Result 47 states and 63 transitions. [2024-11-22 02:07:45,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 02:07:45,305 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 1.65625) internal successors, (53), 25 states have internal predecessors, (53), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (11), 10 states have call predecessors, (11), 8 states have call successors, (11) Word has length 34 [2024-11-22 02:07:45,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:45,306 INFO L225 Difference]: With dead ends: 47 [2024-11-22 02:07:45,306 INFO L226 Difference]: Without dead ends: 43 [2024-11-22 02:07:45,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=256, Invalid=1636, Unknown=0, NotChecked=0, Total=1892 [2024-11-22 02:07:45,311 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 53 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:45,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 184 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:07:45,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-22 02:07:45,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2024-11-22 02:07:45,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.08) internal successors, (27), 27 states have internal predecessors, (27), 5 states have call successors, (5), 1 states have call predecessors, (5), 7 states have return successors, (21), 9 states have call predecessors, (21), 5 states have call successors, (21) [2024-11-22 02:07:45,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 53 transitions. [2024-11-22 02:07:45,323 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 53 transitions. Word has length 34 [2024-11-22 02:07:45,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:45,323 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 53 transitions. [2024-11-22 02:07:45,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 1.65625) internal successors, (53), 25 states have internal predecessors, (53), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (11), 10 states have call predecessors, (11), 8 states have call successors, (11) [2024-11-22 02:07:45,323 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 53 transitions. [2024-11-22 02:07:45,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-22 02:07:45,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:45,327 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:45,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 02:07:45,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:45,528 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:45,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:45,528 INFO L85 PathProgramCache]: Analyzing trace with hash -983670890, now seen corresponding path program 4 times [2024-11-22 02:07:45,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:45,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905693514] [2024-11-22 02:07:45,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:07:45,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:45,539 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:07:45,540 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:45,949 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 5 proven. 37 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-22 02:07:45,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:45,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905693514] [2024-11-22 02:07:45,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905693514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:45,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733022122] [2024-11-22 02:07:45,950 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:07:45,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:45,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:45,951 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:45,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 02:07:45,986 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:07:45,986 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:45,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-22 02:07:45,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:46,167 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-22 02:07:46,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:46,665 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 11 proven. 31 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-22 02:07:46,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733022122] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:46,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:46,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 18] total 38 [2024-11-22 02:07:46,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995436950] [2024-11-22 02:07:46,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:46,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-22 02:07:46,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:46,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-22 02:07:46,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2024-11-22 02:07:46,668 INFO L87 Difference]: Start difference. First operand 38 states and 53 transitions. Second operand has 38 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 27 states have internal predecessors, (53), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (13), 11 states have call predecessors, (13), 8 states have call successors, (13) [2024-11-22 02:07:47,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:47,419 INFO L93 Difference]: Finished difference Result 77 states and 126 transitions. [2024-11-22 02:07:47,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-22 02:07:47,419 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 27 states have internal predecessors, (53), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (13), 11 states have call predecessors, (13), 8 states have call successors, (13) Word has length 41 [2024-11-22 02:07:47,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:47,424 INFO L225 Difference]: With dead ends: 77 [2024-11-22 02:07:47,425 INFO L226 Difference]: Without dead ends: 60 [2024-11-22 02:07:47,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=411, Invalid=2895, Unknown=0, NotChecked=0, Total=3306 [2024-11-22 02:07:47,428 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 46 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:47,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 209 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 02:07:47,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-22 02:07:47,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2024-11-22 02:07:47,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 35 states have internal predecessors, (36), 7 states have call successors, (7), 2 states have call predecessors, (7), 9 states have return successors, (34), 12 states have call predecessors, (34), 7 states have call successors, (34) [2024-11-22 02:07:47,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 77 transitions. [2024-11-22 02:07:47,439 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 77 transitions. Word has length 41 [2024-11-22 02:07:47,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:47,440 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 77 transitions. [2024-11-22 02:07:47,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 27 states have internal predecessors, (53), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (13), 11 states have call predecessors, (13), 8 states have call successors, (13) [2024-11-22 02:07:47,440 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 77 transitions. [2024-11-22 02:07:47,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-22 02:07:47,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:47,446 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:47,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 02:07:47,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:47,650 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:47,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:47,650 INFO L85 PathProgramCache]: Analyzing trace with hash 244570622, now seen corresponding path program 2 times [2024-11-22 02:07:47,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:47,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564076903] [2024-11-22 02:07:47,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:07:47,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:47,663 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:07:47,663 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:47,711 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 7 proven. 40 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-22 02:07:47,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:47,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564076903] [2024-11-22 02:07:47,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564076903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:47,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805664140] [2024-11-22 02:07:47,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:07:47,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:47,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:47,715 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:47,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 02:07:47,757 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:07:47,757 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:47,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:07:47,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:47,791 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-22 02:07:47,792 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:47,951 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-22 02:07:47,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805664140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:47,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:47,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2024-11-22 02:07:47,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992153480] [2024-11-22 02:07:47,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:47,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 02:07:47,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:47,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 02:07:47,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-22 02:07:47,954 INFO L87 Difference]: Start difference. First operand 50 states and 77 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-22 02:07:48,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:48,046 INFO L93 Difference]: Finished difference Result 79 states and 124 transitions. [2024-11-22 02:07:48,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:07:48,047 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) Word has length 61 [2024-11-22 02:07:48,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:48,048 INFO L225 Difference]: With dead ends: 79 [2024-11-22 02:07:48,048 INFO L226 Difference]: Without dead ends: 26 [2024-11-22 02:07:48,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-11-22 02:07:48,049 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:48,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 86 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:07:48,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-22 02:07:48,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-22 02:07:48,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 02:07:48,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-11-22 02:07:48,053 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 61 [2024-11-22 02:07:48,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:48,054 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-11-22 02:07:48,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-22 02:07:48,054 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-11-22 02:07:48,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-22 02:07:48,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:48,057 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:48,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 02:07:48,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:48,258 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:48,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:48,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1241549144, now seen corresponding path program 5 times [2024-11-22 02:07:48,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:48,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938576105] [2024-11-22 02:07:48,258 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:07:48,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:48,281 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-22 02:07:48,281 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 20 proven. 79 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-22 02:07:48,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:48,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938576105] [2024-11-22 02:07:48,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938576105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:48,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349137462] [2024-11-22 02:07:48,883 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:07:48,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:48,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:48,885 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:48,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 02:07:48,924 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-22 02:07:48,925 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:48,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-22 02:07:48,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 3 proven. 61 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-22 02:07:49,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:50,314 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 20 proven. 80 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-22 02:07:50,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349137462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:50,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:50,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 16, 24] total 56 [2024-11-22 02:07:50,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184820015] [2024-11-22 02:07:50,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:50,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-22 02:07:50,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:50,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-22 02:07:50,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=2861, Unknown=0, NotChecked=0, Total=3080 [2024-11-22 02:07:50,316 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 56 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 38 states have internal predecessors, (75), 13 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (19), 18 states have call predecessors, (19), 13 states have call successors, (19) [2024-11-22 02:07:51,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:51,229 INFO L93 Difference]: Finished difference Result 51 states and 65 transitions. [2024-11-22 02:07:51,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-22 02:07:51,230 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 38 states have internal predecessors, (75), 13 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (19), 18 states have call predecessors, (19), 13 states have call successors, (19) Word has length 55 [2024-11-22 02:07:51,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:51,231 INFO L225 Difference]: With dead ends: 51 [2024-11-22 02:07:51,231 INFO L226 Difference]: Without dead ends: 40 [2024-11-22 02:07:51,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1410 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=644, Invalid=5676, Unknown=0, NotChecked=0, Total=6320 [2024-11-22 02:07:51,233 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 43 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:51,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 317 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 02:07:51,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-22 02:07:51,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2024-11-22 02:07:51,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-22 02:07:51,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2024-11-22 02:07:51,239 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 55 [2024-11-22 02:07:51,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:51,239 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2024-11-22 02:07:51,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 38 states have internal predecessors, (75), 13 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (19), 18 states have call predecessors, (19), 13 states have call successors, (19) [2024-11-22 02:07:51,239 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2024-11-22 02:07:51,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-22 02:07:51,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:51,240 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:51,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 02:07:51,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:51,445 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:51,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:51,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1356577930, now seen corresponding path program 6 times [2024-11-22 02:07:51,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:51,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115970998] [2024-11-22 02:07:51,445 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:07:51,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:51,459 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-22 02:07:51,459 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:52,124 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 11 proven. 149 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-22 02:07:52,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:52,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115970998] [2024-11-22 02:07:52,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115970998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:52,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402616887] [2024-11-22 02:07:52,125 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:07:52,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:52,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:52,126 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:52,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 02:07:52,168 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-22 02:07:52,169 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:52,171 WARN L253 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-22 02:07:52,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:52,472 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 4 proven. 106 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-22 02:07:52,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 29 proven. 153 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-22 02:07:53,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402616887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:53,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:53,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 18, 30] total 52 [2024-11-22 02:07:53,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650822586] [2024-11-22 02:07:53,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:53,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-22 02:07:53,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:53,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-22 02:07:53,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2434, Unknown=0, NotChecked=0, Total=2652 [2024-11-22 02:07:53,583 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 52 states, 47 states have (on average 1.6382978723404256) internal successors, (77), 36 states have internal predecessors, (77), 15 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (23), 16 states have call predecessors, (23), 15 states have call successors, (23) [2024-11-22 02:07:54,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:54,481 INFO L93 Difference]: Finished difference Result 61 states and 83 transitions. [2024-11-22 02:07:54,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-22 02:07:54,481 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 47 states have (on average 1.6382978723404256) internal successors, (77), 36 states have internal predecessors, (77), 15 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (23), 16 states have call predecessors, (23), 15 states have call successors, (23) Word has length 69 [2024-11-22 02:07:54,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:54,483 INFO L225 Difference]: With dead ends: 61 [2024-11-22 02:07:54,483 INFO L226 Difference]: Without dead ends: 49 [2024-11-22 02:07:54,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1424 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=739, Invalid=5423, Unknown=0, NotChecked=0, Total=6162 [2024-11-22 02:07:54,485 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 49 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:54,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 321 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 02:07:54,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-22 02:07:54,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2024-11-22 02:07:54,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 27 states have internal predecessors, (28), 5 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (15), 8 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-22 02:07:54,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2024-11-22 02:07:54,493 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 69 [2024-11-22 02:07:54,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:54,493 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2024-11-22 02:07:54,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 47 states have (on average 1.6382978723404256) internal successors, (77), 36 states have internal predecessors, (77), 15 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (23), 16 states have call predecessors, (23), 15 states have call successors, (23) [2024-11-22 02:07:54,493 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2024-11-22 02:07:54,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-22 02:07:54,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:54,494 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:54,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 02:07:54,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:54,695 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:54,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:54,695 INFO L85 PathProgramCache]: Analyzing trace with hash 230391048, now seen corresponding path program 7 times [2024-11-22 02:07:54,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:54,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121255975] [2024-11-22 02:07:54,695 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:07:54,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:55,438 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-22 02:07:55,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:55,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121255975] [2024-11-22 02:07:55,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121255975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:55,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077576163] [2024-11-22 02:07:55,438 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:07:55,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:55,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:55,439 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:55,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 02:07:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:55,487 WARN L253 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-22 02:07:55,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 5 proven. 108 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-22 02:07:56,145 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 26 proven. 156 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-22 02:07:57,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077576163] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:57,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:57,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 20, 30] total 71 [2024-11-22 02:07:57,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205409956] [2024-11-22 02:07:57,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:57,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-22 02:07:57,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:57,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-22 02:07:57,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=4727, Unknown=0, NotChecked=0, Total=4970 [2024-11-22 02:07:57,464 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 71 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 47 states have internal predecessors, (101), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (25), 24 states have call predecessors, (25), 19 states have call successors, (25) [2024-11-22 02:07:58,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:58,605 INFO L93 Difference]: Finished difference Result 59 states and 78 transitions. [2024-11-22 02:07:58,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-22 02:07:58,605 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 47 states have internal predecessors, (101), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (25), 24 states have call predecessors, (25), 19 states have call successors, (25) Word has length 69 [2024-11-22 02:07:58,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:58,606 INFO L225 Difference]: With dead ends: 59 [2024-11-22 02:07:58,606 INFO L226 Difference]: Without dead ends: 52 [2024-11-22 02:07:58,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=778, Invalid=8342, Unknown=0, NotChecked=0, Total=9120 [2024-11-22 02:07:58,608 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 44 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:58,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 583 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 02:07:58,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-22 02:07:58,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 41. [2024-11-22 02:07:58,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 5 states have call successors, (5), 2 states have call predecessors, (5), 7 states have return successors, (17), 9 states have call predecessors, (17), 5 states have call successors, (17) [2024-11-22 02:07:58,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2024-11-22 02:07:58,614 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 69 [2024-11-22 02:07:58,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:58,614 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2024-11-22 02:07:58,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 47 states have internal predecessors, (101), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (25), 24 states have call predecessors, (25), 19 states have call successors, (25) [2024-11-22 02:07:58,614 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2024-11-22 02:07:58,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-22 02:07:58,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:58,615 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:58,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 02:07:58,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-22 02:07:58,820 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:58,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:58,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1792410124, now seen corresponding path program 8 times [2024-11-22 02:07:58,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:58,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286612802] [2024-11-22 02:07:58,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:07:58,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:58,830 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:07:58,830 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:59,451 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 28 proven. 156 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-22 02:07:59,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:59,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286612802] [2024-11-22 02:07:59,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286612802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:59,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621607071] [2024-11-22 02:07:59,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:07:59,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:59,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:59,454 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:59,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 02:07:59,500 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:07:59,500 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:59,502 WARN L253 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-22 02:07:59,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:59,794 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 6 proven. 136 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-22 02:07:59,794 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:01,006 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 29 proven. 203 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-22 02:08:01,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621607071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:01,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:01,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 33] total 55 [2024-11-22 02:08:01,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562977147] [2024-11-22 02:08:01,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:01,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-22 02:08:01,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:01,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-22 02:08:01,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=2735, Unknown=0, NotChecked=0, Total=2970 [2024-11-22 02:08:01,008 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 55 states, 51 states have (on average 1.588235294117647) internal successors, (81), 36 states have internal predecessors, (81), 14 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 19 states have call predecessors, (27), 14 states have call successors, (27) [2024-11-22 02:08:01,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:01,872 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2024-11-22 02:08:01,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-22 02:08:01,872 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 51 states have (on average 1.588235294117647) internal successors, (81), 36 states have internal predecessors, (81), 14 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 19 states have call predecessors, (27), 14 states have call successors, (27) Word has length 76 [2024-11-22 02:08:01,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:01,873 INFO L225 Difference]: With dead ends: 62 [2024-11-22 02:08:01,873 INFO L226 Difference]: Without dead ends: 55 [2024-11-22 02:08:01,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1429 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=709, Invalid=5771, Unknown=0, NotChecked=0, Total=6480 [2024-11-22 02:08:01,875 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 100 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:01,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 370 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 02:08:01,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-22 02:08:01,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 44. [2024-11-22 02:08:01,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 5 states have call successors, (5), 2 states have call predecessors, (5), 8 states have return successors, (19), 10 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-22 02:08:01,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2024-11-22 02:08:01,881 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 76 [2024-11-22 02:08:01,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:01,881 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2024-11-22 02:08:01,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 51 states have (on average 1.588235294117647) internal successors, (81), 36 states have internal predecessors, (81), 14 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 19 states have call predecessors, (27), 14 states have call successors, (27) [2024-11-22 02:08:01,882 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2024-11-22 02:08:01,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-22 02:08:01,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:01,882 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:01,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 02:08:02,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:02,083 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:02,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:02,083 INFO L85 PathProgramCache]: Analyzing trace with hash 403480760, now seen corresponding path program 9 times [2024-11-22 02:08:02,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:02,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850637961] [2024-11-22 02:08:02,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:08:02,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:02,098 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-22 02:08:02,098 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:02,457 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 12 proven. 87 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-22 02:08:02,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:02,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850637961] [2024-11-22 02:08:02,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850637961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:02,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036468553] [2024-11-22 02:08:02,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:08:02,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:02,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:02,460 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:02,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 02:08:02,507 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-22 02:08:02,507 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:02,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-22 02:08:02,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:02,818 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 3 proven. 65 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-22 02:08:02,818 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:03,509 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 6 proven. 89 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-22 02:08:03,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036468553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:03,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:03,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18, 21] total 50 [2024-11-22 02:08:03,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884961236] [2024-11-22 02:08:03,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:03,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-22 02:08:03,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:03,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-22 02:08:03,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2282, Unknown=0, NotChecked=0, Total=2450 [2024-11-22 02:08:03,511 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand has 50 states, 47 states have (on average 1.5957446808510638) internal successors, (75), 32 states have internal predecessors, (75), 12 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (18), 18 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-22 02:08:04,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:04,155 INFO L93 Difference]: Finished difference Result 65 states and 87 transitions. [2024-11-22 02:08:04,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-22 02:08:04,156 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 47 states have (on average 1.5957446808510638) internal successors, (75), 32 states have internal predecessors, (75), 12 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (18), 18 states have call predecessors, (18), 12 states have call successors, (18) Word has length 55 [2024-11-22 02:08:04,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:04,156 INFO L225 Difference]: With dead ends: 65 [2024-11-22 02:08:04,156 INFO L226 Difference]: Without dead ends: 53 [2024-11-22 02:08:04,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=550, Invalid=4706, Unknown=0, NotChecked=0, Total=5256 [2024-11-22 02:08:04,158 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 32 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:04,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 263 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:08:04,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-22 02:08:04,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2024-11-22 02:08:04,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 5 states have call successors, (5), 2 states have call predecessors, (5), 8 states have return successors, (18), 10 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-22 02:08:04,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2024-11-22 02:08:04,164 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 55 [2024-11-22 02:08:04,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:04,164 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2024-11-22 02:08:04,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 47 states have (on average 1.5957446808510638) internal successors, (75), 32 states have internal predecessors, (75), 12 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (18), 18 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-22 02:08:04,165 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2024-11-22 02:08:04,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-22 02:08:04,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:04,165 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:04,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-22 02:08:04,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 02:08:04,370 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:04,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:04,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1119099064, now seen corresponding path program 10 times [2024-11-22 02:08:04,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:04,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017216713] [2024-11-22 02:08:04,370 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:08:04,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:04,383 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:08:04,383 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:05,190 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 48 proven. 194 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-22 02:08:05,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:05,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017216713] [2024-11-22 02:08:05,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017216713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:05,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115072289] [2024-11-22 02:08:05,190 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:08:05,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:05,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:05,192 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:05,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 02:08:05,243 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:08:05,243 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:05,245 WARN L253 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-11-22 02:08:05,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:05,826 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 7 proven. 167 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-11-22 02:08:05,826 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:07,637 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 256 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-22 02:08:07,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115072289] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:07,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:07,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 24, 36] total 74 [2024-11-22 02:08:07,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773603475] [2024-11-22 02:08:07,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:07,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-22 02:08:07,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:07,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-22 02:08:07,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=5125, Unknown=0, NotChecked=0, Total=5402 [2024-11-22 02:08:07,640 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 74 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 45 states have internal predecessors, (99), 15 states have call successors, (15), 1 states have call predecessors, (15), 20 states have return successors, (31), 29 states have call predecessors, (31), 15 states have call successors, (31) [2024-11-22 02:08:08,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:08,818 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2024-11-22 02:08:08,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-22 02:08:08,819 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 45 states have internal predecessors, (99), 15 states have call successors, (15), 1 states have call predecessors, (15), 20 states have return successors, (31), 29 states have call predecessors, (31), 15 states have call successors, (31) Word has length 83 [2024-11-22 02:08:08,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:08,819 INFO L225 Difference]: With dead ends: 63 [2024-11-22 02:08:08,819 INFO L226 Difference]: Without dead ends: 56 [2024-11-22 02:08:08,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=803, Invalid=9297, Unknown=0, NotChecked=0, Total=10100 [2024-11-22 02:08:08,821 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 98 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 1744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:08,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 547 Invalid, 1744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 02:08:08,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-22 02:08:08,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2024-11-22 02:08:08,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.0625) internal successors, (34), 33 states have internal predecessors, (34), 5 states have call successors, (5), 2 states have call predecessors, (5), 9 states have return successors, (20), 11 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-22 02:08:08,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2024-11-22 02:08:08,830 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 83 [2024-11-22 02:08:08,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:08,830 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2024-11-22 02:08:08,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 45 states have internal predecessors, (99), 15 states have call successors, (15), 1 states have call predecessors, (15), 20 states have return successors, (31), 29 states have call predecessors, (31), 15 states have call successors, (31) [2024-11-22 02:08:08,830 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2024-11-22 02:08:08,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-22 02:08:08,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:08,831 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:08,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 02:08:09,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-22 02:08:09,032 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:09,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:09,032 INFO L85 PathProgramCache]: Analyzing trace with hash -287264164, now seen corresponding path program 11 times [2024-11-22 02:08:09,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:09,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963853606] [2024-11-22 02:08:09,032 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:08:09,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:09,049 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-22 02:08:09,049 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:09,890 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 23 proven. 223 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-11-22 02:08:09,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:09,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963853606] [2024-11-22 02:08:09,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963853606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:09,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122375738] [2024-11-22 02:08:09,891 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:08:09,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:09,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:09,892 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:09,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 02:08:09,948 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-22 02:08:09,948 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:09,950 WARN L253 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-11-22 02:08:09,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 17 proven. 193 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-22 02:08:10,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:12,756 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 36 proven. 315 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-22 02:08:12,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122375738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:12,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:12,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 26, 39] total 80 [2024-11-22 02:08:12,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291087885] [2024-11-22 02:08:12,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:12,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-11-22 02:08:12,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:12,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-11-22 02:08:12,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=6019, Unknown=0, NotChecked=0, Total=6320 [2024-11-22 02:08:12,759 INFO L87 Difference]: Start difference. First operand 47 states and 59 transitions. Second operand has 80 states, 76 states have (on average 1.4605263157894737) internal successors, (111), 48 states have internal predecessors, (111), 16 states have call successors, (16), 1 states have call predecessors, (16), 22 states have return successors, (33), 32 states have call predecessors, (33), 16 states have call successors, (33) [2024-11-22 02:08:14,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:14,216 INFO L93 Difference]: Finished difference Result 66 states and 87 transitions. [2024-11-22 02:08:14,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-22 02:08:14,218 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 76 states have (on average 1.4605263157894737) internal successors, (111), 48 states have internal predecessors, (111), 16 states have call successors, (16), 1 states have call predecessors, (16), 22 states have return successors, (33), 32 states have call predecessors, (33), 16 states have call successors, (33) Word has length 90 [2024-11-22 02:08:14,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:14,219 INFO L225 Difference]: With dead ends: 66 [2024-11-22 02:08:14,219 INFO L226 Difference]: Without dead ends: 59 [2024-11-22 02:08:14,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2520 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=896, Invalid=10876, Unknown=0, NotChecked=0, Total=11772 [2024-11-22 02:08:14,221 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 152 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 2340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:14,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 711 Invalid, 2340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 2161 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 02:08:14,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-22 02:08:14,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2024-11-22 02:08:14,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 10 states have return successors, (22), 12 states have call predecessors, (22), 5 states have call successors, (22) [2024-11-22 02:08:14,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2024-11-22 02:08:14,229 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 90 [2024-11-22 02:08:14,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:14,230 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2024-11-22 02:08:14,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 76 states have (on average 1.4605263157894737) internal successors, (111), 48 states have internal predecessors, (111), 16 states have call successors, (16), 1 states have call predecessors, (16), 22 states have return successors, (33), 32 states have call predecessors, (33), 16 states have call successors, (33) [2024-11-22 02:08:14,230 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2024-11-22 02:08:14,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-22 02:08:14,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:14,231 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 14, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:14,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-22 02:08:14,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 02:08:14,432 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:14,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:14,432 INFO L85 PathProgramCache]: Analyzing trace with hash 960528734, now seen corresponding path program 12 times [2024-11-22 02:08:14,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:14,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630102761] [2024-11-22 02:08:14,432 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:08:14,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:14,465 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-11-22 02:08:14,465 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 69 proven. 582 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-22 02:08:16,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:16,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630102761] [2024-11-22 02:08:16,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630102761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:16,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226895701] [2024-11-22 02:08:16,061 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:08:16,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:16,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:16,062 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:16,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 02:08:16,133 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-11-22 02:08:16,133 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:16,136 WARN L253 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 193 conjuncts are in the unsatisfiable core [2024-11-22 02:08:16,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:17,152 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 9 proven. 361 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2024-11-22 02:08:17,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:20,579 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 56 proven. 602 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-22 02:08:20,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226895701] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:20,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:20,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 28, 51] total 108 [2024-11-22 02:08:20,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479022512] [2024-11-22 02:08:20,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:20,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2024-11-22 02:08:20,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:20,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2024-11-22 02:08:20,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=11152, Unknown=0, NotChecked=0, Total=11556 [2024-11-22 02:08:20,583 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand has 108 states, 103 states have (on average 1.5728155339805825) internal successors, (162), 69 states have internal predecessors, (162), 30 states have call successors, (30), 1 states have call predecessors, (30), 27 states have return successors, (43), 39 states have call predecessors, (43), 30 states have call successors, (43) [2024-11-22 02:08:23,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:23,192 INFO L93 Difference]: Finished difference Result 77 states and 107 transitions. [2024-11-22 02:08:23,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-22 02:08:23,192 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 103 states have (on average 1.5728155339805825) internal successors, (162), 69 states have internal predecessors, (162), 30 states have call successors, (30), 1 states have call predecessors, (30), 27 states have return successors, (43), 39 states have call predecessors, (43), 30 states have call successors, (43) Word has length 118 [2024-11-22 02:08:23,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:23,193 INFO L225 Difference]: With dead ends: 77 [2024-11-22 02:08:23,193 INFO L226 Difference]: Without dead ends: 62 [2024-11-22 02:08:23,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5216 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1842, Invalid=19914, Unknown=0, NotChecked=0, Total=21756 [2024-11-22 02:08:23,196 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 195 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 3661 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 3870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 3661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:23,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 914 Invalid, 3870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 3661 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-22 02:08:23,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-22 02:08:23,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 53. [2024-11-22 02:08:23,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 37 states have internal predecessors, (38), 5 states have call successors, (5), 2 states have call predecessors, (5), 11 states have return successors, (24), 13 states have call predecessors, (24), 5 states have call successors, (24) [2024-11-22 02:08:23,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2024-11-22 02:08:23,203 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 118 [2024-11-22 02:08:23,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:23,203 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2024-11-22 02:08:23,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 103 states have (on average 1.5728155339805825) internal successors, (162), 69 states have internal predecessors, (162), 30 states have call successors, (30), 1 states have call predecessors, (30), 27 states have return successors, (43), 39 states have call predecessors, (43), 30 states have call successors, (43) [2024-11-22 02:08:23,204 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2024-11-22 02:08:23,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-22 02:08:23,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:23,205 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:23,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-22 02:08:23,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-22 02:08:23,408 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:23,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:23,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1817590444, now seen corresponding path program 13 times [2024-11-22 02:08:23,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:23,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789689859] [2024-11-22 02:08:23,409 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:08:23,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:08:24,775 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 0 proven. 492 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-22 02:08:24,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:24,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789689859] [2024-11-22 02:08:24,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789689859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:24,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435721864] [2024-11-22 02:08:24,775 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:08:24,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:24,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:24,776 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:24,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 02:08:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:08:24,851 WARN L253 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 169 conjuncts are in the unsatisfiable core [2024-11-22 02:08:24,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:26,138 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 10 proven. 278 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2024-11-22 02:08:26,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 41 proven. 451 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-22 02:08:29,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435721864] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:29,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:29,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 30, 45] total 106 [2024-11-22 02:08:29,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724370402] [2024-11-22 02:08:29,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:29,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-11-22 02:08:29,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:29,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-11-22 02:08:29,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=10767, Unknown=0, NotChecked=0, Total=11130 [2024-11-22 02:08:29,152 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand has 106 states, 101 states have (on average 1.5445544554455446) internal successors, (156), 67 states have internal predecessors, (156), 29 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (40), 39 states have call predecessors, (40), 29 states have call successors, (40) [2024-11-22 02:08:31,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:31,130 INFO L93 Difference]: Finished difference Result 72 states and 95 transitions. [2024-11-22 02:08:31,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-22 02:08:31,130 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 101 states have (on average 1.5445544554455446) internal successors, (156), 67 states have internal predecessors, (156), 29 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (40), 39 states have call predecessors, (40), 29 states have call successors, (40) Word has length 104 [2024-11-22 02:08:31,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:31,131 INFO L225 Difference]: With dead ends: 72 [2024-11-22 02:08:31,131 INFO L226 Difference]: Without dead ends: 65 [2024-11-22 02:08:31,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3972 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1374, Invalid=18086, Unknown=0, NotChecked=0, Total=19460 [2024-11-22 02:08:31,132 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 164 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 3018 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 3372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 3018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:31,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 1027 Invalid, 3372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 3018 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 02:08:31,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-22 02:08:31,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2024-11-22 02:08:31,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 39 states have internal predecessors, (40), 5 states have call successors, (5), 2 states have call predecessors, (5), 12 states have return successors, (26), 14 states have call predecessors, (26), 5 states have call successors, (26) [2024-11-22 02:08:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2024-11-22 02:08:31,140 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 104 [2024-11-22 02:08:31,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:31,140 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2024-11-22 02:08:31,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 101 states have (on average 1.5445544554455446) internal successors, (156), 67 states have internal predecessors, (156), 29 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (40), 39 states have call predecessors, (40), 29 states have call successors, (40) [2024-11-22 02:08:31,140 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2024-11-22 02:08:31,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-22 02:08:31,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:31,141 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 17, 17, 17, 17, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:31,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-22 02:08:31,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:31,342 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:31,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:31,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1447362104, now seen corresponding path program 14 times [2024-11-22 02:08:31,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:31,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358058251] [2024-11-22 02:08:31,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:08:31,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:31,362 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:08:31,362 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:33,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 2 proven. 954 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-22 02:08:33,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:33,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358058251] [2024-11-22 02:08:33,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358058251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:33,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475296215] [2024-11-22 02:08:33,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:08:33,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:33,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:33,622 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:33,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 02:08:33,706 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:08:33,706 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:33,709 WARN L253 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 229 conjuncts are in the unsatisfiable core [2024-11-22 02:08:33,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 11 proven. 515 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2024-11-22 02:08:35,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:40,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 68 proven. 884 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-22 02:08:40,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475296215] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:40,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:40,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 32, 60] total 137 [2024-11-22 02:08:40,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068547165] [2024-11-22 02:08:40,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:40,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2024-11-22 02:08:40,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:40,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2024-11-22 02:08:40,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=18141, Unknown=0, NotChecked=0, Total=18632 [2024-11-22 02:08:40,477 INFO L87 Difference]: Start difference. First operand 56 states and 71 transitions. Second operand has 137 states, 132 states have (on average 1.5833333333333333) internal successors, (209), 87 states have internal predecessors, (209), 39 states have call successors, (39), 1 states have call predecessors, (39), 36 states have return successors, (51), 50 states have call predecessors, (51), 39 states have call successors, (51) [2024-11-22 02:08:44,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:44,065 INFO L93 Difference]: Finished difference Result 85 states and 119 transitions. [2024-11-22 02:08:44,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-22 02:08:44,066 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 132 states have (on average 1.5833333333333333) internal successors, (209), 87 states have internal predecessors, (209), 39 states have call successors, (39), 1 states have call predecessors, (39), 36 states have return successors, (51), 50 states have call predecessors, (51), 39 states have call successors, (51) Word has length 139 [2024-11-22 02:08:44,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:44,067 INFO L225 Difference]: With dead ends: 85 [2024-11-22 02:08:44,067 INFO L226 Difference]: Without dead ends: 68 [2024-11-22 02:08:44,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6462 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=2445, Invalid=30861, Unknown=0, NotChecked=0, Total=33306 [2024-11-22 02:08:44,069 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 257 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 5791 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 6187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 5791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:44,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 1569 Invalid, 6187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 5791 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-22 02:08:44,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-22 02:08:44,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 59. [2024-11-22 02:08:44,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 5 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (28), 15 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-22 02:08:44,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2024-11-22 02:08:44,077 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 139 [2024-11-22 02:08:44,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:44,077 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2024-11-22 02:08:44,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 132 states have (on average 1.5833333333333333) internal successors, (209), 87 states have internal predecessors, (209), 39 states have call successors, (39), 1 states have call predecessors, (39), 36 states have return successors, (51), 50 states have call predecessors, (51), 39 states have call successors, (51) [2024-11-22 02:08:44,077 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2024-11-22 02:08:44,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-22 02:08:44,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:44,078 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 19, 19, 19, 19, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:44,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-22 02:08:44,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-22 02:08:44,279 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:44,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:44,280 INFO L85 PathProgramCache]: Analyzing trace with hash 626974934, now seen corresponding path program 15 times [2024-11-22 02:08:44,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:44,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405377693] [2024-11-22 02:08:44,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:08:44,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:44,319 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2024-11-22 02:08:44,319 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:46,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 242 proven. 855 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2024-11-22 02:08:46,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:46,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405377693] [2024-11-22 02:08:46,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405377693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:46,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148192458] [2024-11-22 02:08:46,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:08:46,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:46,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:46,597 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:46,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-22 02:08:46,714 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2024-11-22 02:08:46,715 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:46,719 WARN L253 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 253 conjuncts are in the unsatisfiable core [2024-11-22 02:08:46,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:48,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 12 proven. 632 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2024-11-22 02:08:48,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:54,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 77 proven. 1101 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2024-11-22 02:08:54,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148192458] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:54,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:54,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 34, 66] total 138 [2024-11-22 02:08:54,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647160665] [2024-11-22 02:08:54,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:54,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 138 states [2024-11-22 02:08:54,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:54,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2024-11-22 02:08:54,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=572, Invalid=18334, Unknown=0, NotChecked=0, Total=18906 [2024-11-22 02:08:54,250 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand has 138 states, 134 states have (on average 1.537313432835821) internal successors, (206), 85 states have internal predecessors, (206), 35 states have call successors, (35), 1 states have call predecessors, (35), 40 states have return successors, (55), 53 states have call predecessors, (55), 35 states have call successors, (55) [2024-11-22 02:08:58,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:58,170 INFO L93 Difference]: Finished difference Result 89 states and 125 transitions. [2024-11-22 02:08:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-22 02:08:58,170 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 134 states have (on average 1.537313432835821) internal successors, (206), 85 states have internal predecessors, (206), 35 states have call successors, (35), 1 states have call predecessors, (35), 40 states have return successors, (55), 53 states have call predecessors, (55), 35 states have call successors, (55) Word has length 153 [2024-11-22 02:08:58,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:58,171 INFO L225 Difference]: With dead ends: 89 [2024-11-22 02:08:58,171 INFO L226 Difference]: Without dead ends: 71 [2024-11-22 02:08:58,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7865 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=2443, Invalid=31967, Unknown=0, NotChecked=0, Total=34410 [2024-11-22 02:08:58,173 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 227 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 6156 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 6443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 6156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:58,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 1519 Invalid, 6443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 6156 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-22 02:08:58,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-22 02:08:58,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2024-11-22 02:08:58,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 43 states have internal predecessors, (44), 5 states have call successors, (5), 2 states have call predecessors, (5), 14 states have return successors, (30), 16 states have call predecessors, (30), 5 states have call successors, (30) [2024-11-22 02:08:58,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2024-11-22 02:08:58,183 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 153 [2024-11-22 02:08:58,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:58,184 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2024-11-22 02:08:58,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 138 states, 134 states have (on average 1.537313432835821) internal successors, (206), 85 states have internal predecessors, (206), 35 states have call successors, (35), 1 states have call predecessors, (35), 40 states have return successors, (55), 53 states have call predecessors, (55), 35 states have call successors, (55) [2024-11-22 02:08:58,184 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2024-11-22 02:08:58,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-22 02:08:58,186 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:58,186 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 21, 21, 21, 21, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:58,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-22 02:08:58,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:58,387 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:58,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:58,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1673274616, now seen corresponding path program 16 times [2024-11-22 02:08:58,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:58,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196067784] [2024-11-22 02:08:58,387 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:08:58,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:58,406 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:08:58,407 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:00,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 66 proven. 848 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2024-11-22 02:09:00,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:00,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196067784] [2024-11-22 02:09:00,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196067784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:00,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704566517] [2024-11-22 02:09:00,928 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:09:00,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:00,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:00,929 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:00,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-22 02:09:01,048 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:09:01,048 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:01,052 WARN L253 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 277 conjuncts are in the unsatisfiable core [2024-11-22 02:09:01,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:02,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 13 proven. 761 refuted. 0 times theorem prover too weak. 911 trivial. 0 not checked. [2024-11-22 02:09:02,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:09,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 86 proven. 1342 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2024-11-22 02:09:09,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704566517] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:09,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:09,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 36, 72] total 142 [2024-11-22 02:09:09,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394442830] [2024-11-22 02:09:09,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:09,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 142 states [2024-11-22 02:09:09,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:09,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2024-11-22 02:09:09,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=19447, Unknown=0, NotChecked=0, Total=20022 [2024-11-22 02:09:09,872 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 142 states, 138 states have (on average 1.3840579710144927) internal successors, (191), 82 states have internal predecessors, (191), 27 states have call successors, (27), 1 states have call predecessors, (27), 45 states have return successors, (61), 60 states have call predecessors, (61), 27 states have call successors, (61)