./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array22_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-patterns/array22_pattern.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 31d323b6985f030ac0fb5fda45d0cb8af14c3bb3898c8ff09cf5a292e40f357b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:18:16,187 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:18:16,253 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:18:16,260 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:18:16,260 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:18:16,296 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:18:16,297 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:18:16,297 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:18:16,298 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:18:16,298 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:18:16,299 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:18:16,299 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:18:16,300 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:18:16,300 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:18:16,300 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:18:16,301 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:18:16,301 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:18:16,302 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:18:16,302 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:18:16,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:18:16,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:18:16,303 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:18:16,303 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:18:16,304 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:18:16,304 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:18:16,304 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:18:16,305 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:18:16,305 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:18:16,305 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:18:16,306 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:18:16,306 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:18:16,306 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:18:16,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:18:16,307 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:18:16,307 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:18:16,308 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:18:16,308 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:18:16,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:18:16,309 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:18:16,309 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:18:16,309 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:18:16,310 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:18:16,310 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31d323b6985f030ac0fb5fda45d0cb8af14c3bb3898c8ff09cf5a292e40f357b [2024-11-18 09:18:16,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:18:16,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:18:16,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:18:16,583 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:18:16,584 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:18:16,585 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array22_pattern.c [2024-11-18 09:18:17,983 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:18:18,159 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:18:18,160 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array22_pattern.c [2024-11-18 09:18:18,167 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc269b828/8d847c977a594c81aa97c94940f13e0c/FLAG170bb69d4 [2024-11-18 09:18:18,559 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc269b828/8d847c977a594c81aa97c94940f13e0c [2024-11-18 09:18:18,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:18:18,562 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:18:18,563 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:18:18,563 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:18:18,572 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:18:18,572 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:18:18" (1/1) ... [2024-11-18 09:18:18,573 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a49d96c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:18:18, skipping insertion in model container [2024-11-18 09:18:18,573 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:18:18" (1/1) ... [2024-11-18 09:18:18,597 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:18:18,776 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/array-patterns/array22_pattern.c[1347,1360] [2024-11-18 09:18:18,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:18:18,814 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:18:18,825 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/array-patterns/array22_pattern.c[1347,1360] [2024-11-18 09:18:18,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:18:18,859 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:18:18,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:18:18 WrapperNode [2024-11-18 09:18:18,861 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:18:18,862 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:18:18,862 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:18:18,863 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:18:18,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:18:18" (1/1) ... [2024-11-18 09:18:18,882 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:18:18" (1/1) ... [2024-11-18 09:18:18,904 INFO L138 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 110 [2024-11-18 09:18:18,907 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:18:18,908 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:18:18,908 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:18:18,908 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:18:18,917 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:18:18" (1/1) ... [2024-11-18 09:18:18,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:18:18" (1/1) ... [2024-11-18 09:18:18,920 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:18:18" (1/1) ... [2024-11-18 09:18:18,933 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-18 09:18:18,933 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:18:18" (1/1) ... [2024-11-18 09:18:18,933 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:18:18" (1/1) ... [2024-11-18 09:18:18,938 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:18:18" (1/1) ... [2024-11-18 09:18:18,941 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:18:18" (1/1) ... [2024-11-18 09:18:18,943 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:18:18" (1/1) ... [2024-11-18 09:18:18,944 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:18:18" (1/1) ... [2024-11-18 09:18:18,946 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:18:18,946 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:18:18,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:18:18,947 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:18:18,948 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:18:18" (1/1) ... [2024-11-18 09:18:18,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:18:18,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:18:18,980 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) [2024-11-18 09:18:18,982 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 [2024-11-18 09:18:19,021 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2024-11-18 09:18:19,021 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2024-11-18 09:18:19,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:18:19,021 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 09:18:19,021 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 09:18:19,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:18:19,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 09:18:19,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 09:18:19,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 09:18:19,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 09:18:19,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:18:19,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:18:19,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 09:18:19,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 09:18:19,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 09:18:19,092 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:18:19,094 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:18:19,362 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-11-18 09:18:19,363 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:18:19,381 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:18:19,383 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-18 09:18:19,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:18:19 BoogieIcfgContainer [2024-11-18 09:18:19,383 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:18:19,385 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:18:19,386 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:18:19,389 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:18:19,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:18:18" (1/3) ... [2024-11-18 09:18:19,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac3ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:18:19, skipping insertion in model container [2024-11-18 09:18:19,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:18:18" (2/3) ... [2024-11-18 09:18:19,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac3ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:18:19, skipping insertion in model container [2024-11-18 09:18:19,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:18:19" (3/3) ... [2024-11-18 09:18:19,392 INFO L112 eAbstractionObserver]: Analyzing ICFG array22_pattern.c [2024-11-18 09:18:19,407 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:18:19,407 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:18:19,485 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:18:19,491 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;@3b2e41ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:18:19,493 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:18:19,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 09:18:19,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-18 09:18:19,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:18:19,505 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:18:19,506 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:18:19,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:18:19,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1798908762, now seen corresponding path program 1 times [2024-11-18 09:18:19,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:18:19,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284811219] [2024-11-18 09:18:19,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:18:19,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:18:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:18:19,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:18:19,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:18:19,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284811219] [2024-11-18 09:18:19,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284811219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:18:19,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:18:19,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:18:19,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928127867] [2024-11-18 09:18:19,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:18:19,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 09:18:19,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:18:19,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 09:18:19,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 09:18:19,718 INFO L87 Difference]: Start difference. First operand has 41 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 09:18:19,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:18:19,735 INFO L93 Difference]: Finished difference Result 79 states and 117 transitions. [2024-11-18 09:18:19,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 09:18:19,737 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-18 09:18:19,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:18:19,742 INFO L225 Difference]: With dead ends: 79 [2024-11-18 09:18:19,742 INFO L226 Difference]: Without dead ends: 37 [2024-11-18 09:18:19,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 09:18:19,747 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:18:19,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:18:19,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-18 09:18:19,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-18 09:18:19,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 09:18:19,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2024-11-18 09:18:19,781 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 15 [2024-11-18 09:18:19,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:18:19,782 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2024-11-18 09:18:19,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 09:18:19,783 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2024-11-18 09:18:19,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-18 09:18:19,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:18:19,786 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:18:19,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:18:19,787 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:18:19,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:18:19,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1909329698, now seen corresponding path program 1 times [2024-11-18 09:18:19,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:18:19,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918762389] [2024-11-18 09:18:19,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:18:19,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:18:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:18:20,117 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 09:18:20,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:18:20,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918762389] [2024-11-18 09:18:20,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918762389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:18:20,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:18:20,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:18:20,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165626873] [2024-11-18 09:18:20,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:18:20,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:18:20,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:18:20,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:18:20,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:18:20,124 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 09:18:20,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:18:20,151 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2024-11-18 09:18:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:18:20,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2024-11-18 09:18:20,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:18:20,153 INFO L225 Difference]: With dead ends: 44 [2024-11-18 09:18:20,153 INFO L226 Difference]: Without dead ends: 40 [2024-11-18 09:18:20,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:18:20,155 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 11 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:18:20,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 110 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:18:20,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-18 09:18:20,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-18 09:18:20,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 09:18:20,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2024-11-18 09:18:20,167 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 42 [2024-11-18 09:18:20,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:18:20,169 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2024-11-18 09:18:20,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 09:18:20,170 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2024-11-18 09:18:20,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-18 09:18:20,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:18:20,172 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:18:20,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:18:20,173 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:18:20,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:18:20,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1786751912, now seen corresponding path program 1 times [2024-11-18 09:18:20,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:18:20,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23397213] [2024-11-18 09:18:20,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:18:20,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:18:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:18:20,360 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 09:18:20,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:18:20,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23397213] [2024-11-18 09:18:20,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23397213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:18:20,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:18:20,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 09:18:20,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082689868] [2024-11-18 09:18:20,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:18:20,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 09:18:20,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:18:20,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 09:18:20,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:18:20,364 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 09:18:20,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:18:20,509 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2024-11-18 09:18:20,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 09:18:20,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 47 [2024-11-18 09:18:20,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:18:20,511 INFO L225 Difference]: With dead ends: 83 [2024-11-18 09:18:20,513 INFO L226 Difference]: Without dead ends: 50 [2024-11-18 09:18:20,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:18:20,515 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 22 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:18:20,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 110 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:18:20,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-18 09:18:20,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2024-11-18 09:18:20,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 09:18:20,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2024-11-18 09:18:20,529 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 47 [2024-11-18 09:18:20,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:18:20,529 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2024-11-18 09:18:20,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 09:18:20,530 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2024-11-18 09:18:20,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-18 09:18:20,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:18:20,533 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:18:20,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 09:18:20,534 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:18:20,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:18:20,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2075657686, now seen corresponding path program 1 times [2024-11-18 09:18:20,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:18:20,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096299190] [2024-11-18 09:18:20,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:18:20,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:18:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:18:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 09:18:20,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:18:20,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096299190] [2024-11-18 09:18:20,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096299190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:18:20,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:18:20,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:18:20,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862375840] [2024-11-18 09:18:20,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:18:20,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:18:20,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:18:20,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:18:20,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:18:20,699 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 09:18:20,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:18:20,763 INFO L93 Difference]: Finished difference Result 85 states and 109 transitions. [2024-11-18 09:18:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:18:20,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2024-11-18 09:18:20,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:18:20,765 INFO L225 Difference]: With dead ends: 85 [2024-11-18 09:18:20,765 INFO L226 Difference]: Without dead ends: 49 [2024-11-18 09:18:20,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:18:20,767 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 10 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:18:20,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 97 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:18:20,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-18 09:18:20,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 41. [2024-11-18 09:18:20,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 09:18:20,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2024-11-18 09:18:20,779 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 50 [2024-11-18 09:18:20,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:18:20,780 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2024-11-18 09:18:20,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 09:18:20,781 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2024-11-18 09:18:20,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-18 09:18:20,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:18:20,782 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:18:20,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 09:18:20,782 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:18:20,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:18:20,783 INFO L85 PathProgramCache]: Analyzing trace with hash 874891816, now seen corresponding path program 1 times [2024-11-18 09:18:20,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:18:20,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257123163] [2024-11-18 09:18:20,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:18:20,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:18:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:18:20,970 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 09:18:20,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:18:20,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257123163] [2024-11-18 09:18:20,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257123163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:18:20,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731524546] [2024-11-18 09:18:20,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:18:20,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:18:20,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:18:20,974 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) [2024-11-18 09:18:20,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 09:18:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:18:21,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:18:21,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:18:21,180 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 09:18:21,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:18:21,329 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 09:18:21,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731524546] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:18:21,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:18:21,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-18 09:18:21,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214448821] [2024-11-18 09:18:21,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:18:21,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 09:18:21,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:18:21,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 09:18:21,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:18:21,336 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 09:18:21,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:18:21,515 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2024-11-18 09:18:21,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 09:18:21,516 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 52 [2024-11-18 09:18:21,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:18:21,517 INFO L225 Difference]: With dead ends: 88 [2024-11-18 09:18:21,518 INFO L226 Difference]: Without dead ends: 53 [2024-11-18 09:18:21,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 97 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-18 09:18:21,520 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 81 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:18:21,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 109 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:18:21,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-18 09:18:21,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2024-11-18 09:18:21,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 09:18:21,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2024-11-18 09:18:21,534 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 52 [2024-11-18 09:18:21,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:18:21,535 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2024-11-18 09:18:21,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 09:18:21,535 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2024-11-18 09:18:21,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-18 09:18:21,536 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:18:21,536 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:18:21,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 09:18:21,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:18:21,741 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:18:21,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:18:21,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1211966936, now seen corresponding path program 2 times [2024-11-18 09:18:21,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:18:21,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872537322] [2024-11-18 09:18:21,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:18:21,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:18:21,768 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:18:21,768 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:18:21,920 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 09:18:21,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:18:21,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872537322] [2024-11-18 09:18:21,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872537322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:18:21,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529325610] [2024-11-18 09:18:21,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:18:21,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:18:21,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:18:21,928 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) [2024-11-18 09:18:21,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 09:18:22,016 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:18:22,017 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:18:22,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:18:22,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:18:22,117 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 09:18:22,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:18:22,203 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 09:18:22,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529325610] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:18:22,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:18:22,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-18 09:18:22,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335216891] [2024-11-18 09:18:22,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:18:22,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 09:18:22,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:18:22,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 09:18:22,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-18 09:18:22,206 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 09:18:22,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:18:22,504 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2024-11-18 09:18:22,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 09:18:22,505 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 56 [2024-11-18 09:18:22,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:18:22,507 INFO L225 Difference]: With dead ends: 108 [2024-11-18 09:18:22,507 INFO L226 Difference]: Without dead ends: 75 [2024-11-18 09:18:22,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2024-11-18 09:18:22,508 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 47 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:18:22,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 250 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:18:22,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-18 09:18:22,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2024-11-18 09:18:22,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 09:18:22,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2024-11-18 09:18:22,524 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 56 [2024-11-18 09:18:22,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:18:22,525 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2024-11-18 09:18:22,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 09:18:22,525 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2024-11-18 09:18:22,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-18 09:18:22,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:18:22,526 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:18:22,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 09:18:22,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-18 09:18:22,727 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:18:22,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:18:22,728 INFO L85 PathProgramCache]: Analyzing trace with hash -511912674, now seen corresponding path program 3 times [2024-11-18 09:18:22,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:18:22,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317838911] [2024-11-18 09:18:22,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:18:22,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:18:22,803 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-18 09:18:22,804 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-18 09:18:22,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [980300447] [2024-11-18 09:18:22,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:18:22,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:18:22,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:18:22,811 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) [2024-11-18 09:18:22,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 09:18:24,581 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-18 09:18:24,581 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:18:24,583 WARN L253 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-18 09:18:24,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:18:24,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:18:24,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-18 09:18:25,035 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2024-11-18 09:18:25,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2024-11-18 09:18:25,178 INFO L349 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2024-11-18 09:18:25,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 44 [2024-11-18 09:18:26,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:26,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:26,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:26,559 INFO L349 Elim1Store]: treesize reduction 266, result has 30.9 percent of original size [2024-11-18 09:18:26,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 5 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 88 treesize of output 158 [2024-11-18 09:18:34,304 INFO L349 Elim1Store]: treesize reduction 192, result has 34.9 percent of original size [2024-11-18 09:18:34,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 468 treesize of output 500 [2024-11-18 09:18:40,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:40,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:40,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:40,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:40,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:40,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:40,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:40,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:40,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:40,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:40,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:40,204 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:18:40,387 INFO L349 Elim1Store]: treesize reduction 370, result has 5.6 percent of original size [2024-11-18 09:18:40,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 693 treesize of output 890 [2024-11-18 09:18:42,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,111 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:18:42,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 65 [2024-11-18 09:18:42,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,138 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:18:42,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,212 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:18:42,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:42,657 INFO L349 Elim1Store]: treesize reduction 775, result has 7.5 percent of original size [2024-11-18 09:18:42,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 7 select indices, 7 select index equivalence classes, 18 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 23 case distinctions, treesize of input 384 treesize of output 666 [2024-11-18 09:18:43,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:43,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:43,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:43,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:43,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:43,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:43,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:43,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:43,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:43,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:43,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:43,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:43,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:43,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:43,560 INFO L349 Elim1Store]: treesize reduction 162, result has 32.8 percent of original size [2024-11-18 09:18:43,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 204 treesize of output 196 [2024-11-18 09:18:49,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 261 treesize of output 213 [2024-11-18 09:18:49,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:49,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:49,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:49,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:18:49,378 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2024-11-18 09:18:49,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 90 treesize of output 1 [2024-11-18 09:18:49,388 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2024-11-18 09:18:49,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 1 [2024-11-18 09:18:50,201 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 9 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:18:50,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:18:54,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:18:54,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317838911] [2024-11-18 09:18:54,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 09:18:54,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980300447] [2024-11-18 09:18:54,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980300447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:18:54,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:18:54,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2024-11-18 09:18:54,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104921618] [2024-11-18 09:18:54,956 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-18 09:18:54,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-18 09:18:54,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:18:54,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-18 09:18:54,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=455, Invalid=4100, Unknown=1, NotChecked=0, Total=4556 [2024-11-18 09:18:54,959 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 42 states have internal predecessors, (60), 4 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-18 09:19:00,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-18 09:19:04,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:19:04,049 INFO L93 Difference]: Finished difference Result 177 states and 212 transitions. [2024-11-18 09:19:04,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-18 09:19:04,050 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 42 states have internal predecessors, (60), 4 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 70 [2024-11-18 09:19:04,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:19:04,052 INFO L225 Difference]: With dead ends: 177 [2024-11-18 09:19:04,052 INFO L226 Difference]: Without dead ends: 133 [2024-11-18 09:19:04,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2448 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=603, Invalid=5402, Unknown=1, NotChecked=0, Total=6006 [2024-11-18 09:19:04,055 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 92 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 1821 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 1840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1821 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-18 09:19:04,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 565 Invalid, 1840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1821 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2024-11-18 09:19:04,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-18 09:19:04,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 111. [2024-11-18 09:19:04,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 93 states have (on average 1.1827956989247312) internal successors, (110), 94 states have internal predecessors, (110), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-18 09:19:04,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 129 transitions. [2024-11-18 09:19:04,084 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 129 transitions. Word has length 70 [2024-11-18 09:19:04,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:19:04,084 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 129 transitions. [2024-11-18 09:19:04,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 42 states have internal predecessors, (60), 4 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-18 09:19:04,084 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 129 transitions. [2024-11-18 09:19:04,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-18 09:19:04,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:19:04,086 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:19:04,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 09:19:04,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:19:04,287 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:19:04,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:19:04,287 INFO L85 PathProgramCache]: Analyzing trace with hash -480892867, now seen corresponding path program 1 times [2024-11-18 09:19:04,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:19:04,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109259074] [2024-11-18 09:19:04,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:19:04,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:19:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:19:04,360 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-18 09:19:04,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:19:04,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109259074] [2024-11-18 09:19:04,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109259074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:19:04,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:19:04,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:19:04,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106818761] [2024-11-18 09:19:04,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:19:04,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:19:04,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:19:04,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:19:04,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:19:04,363 INFO L87 Difference]: Start difference. First operand 111 states and 129 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-18 09:19:04,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:19:04,403 INFO L93 Difference]: Finished difference Result 157 states and 185 transitions. [2024-11-18 09:19:04,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:19:04,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 70 [2024-11-18 09:19:04,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:19:04,406 INFO L225 Difference]: With dead ends: 157 [2024-11-18 09:19:04,406 INFO L226 Difference]: Without dead ends: 117 [2024-11-18 09:19:04,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:19:04,408 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:19:04,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:19:04,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-18 09:19:04,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2024-11-18 09:19:04,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 97 states have internal predecessors, (113), 9 states have call successors, (9), 7 states have call predecessors, (9), 9 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-18 09:19:04,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 134 transitions. [2024-11-18 09:19:04,445 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 134 transitions. Word has length 70 [2024-11-18 09:19:04,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:19:04,445 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 134 transitions. [2024-11-18 09:19:04,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-18 09:19:04,445 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 134 transitions. [2024-11-18 09:19:04,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-18 09:19:04,450 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:19:04,450 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:19:04,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 09:19:04,450 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:19:04,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:19:04,451 INFO L85 PathProgramCache]: Analyzing trace with hash -262038149, now seen corresponding path program 1 times [2024-11-18 09:19:04,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:19:04,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876485886] [2024-11-18 09:19:04,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:19:04,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:19:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:19:04,664 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-18 09:19:04,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:19:04,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876485886] [2024-11-18 09:19:04,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876485886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:19:04,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213738282] [2024-11-18 09:19:04,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:19:04,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:19:04,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:19:04,667 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) [2024-11-18 09:19:04,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 09:19:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:19:04,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 09:19:04,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:19:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 09:19:04,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:19:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-18 09:19:05,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213738282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:19:05,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:19:05,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 7] total 15 [2024-11-18 09:19:05,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506581220] [2024-11-18 09:19:05,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:19:05,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 09:19:05,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:19:05,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 09:19:05,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-18 09:19:05,006 INFO L87 Difference]: Start difference. First operand 115 states and 134 transitions. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-18 09:19:05,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:19:05,247 INFO L93 Difference]: Finished difference Result 178 states and 213 transitions. [2024-11-18 09:19:05,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 09:19:05,251 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 70 [2024-11-18 09:19:05,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:19:05,252 INFO L225 Difference]: With dead ends: 178 [2024-11-18 09:19:05,252 INFO L226 Difference]: Without dead ends: 132 [2024-11-18 09:19:05,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-18 09:19:05,253 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 34 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:19:05,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 188 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:19:05,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-18 09:19:05,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 129. [2024-11-18 09:19:05,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 107 states have (on average 1.1775700934579438) internal successors, (126), 107 states have internal predecessors, (126), 11 states have call successors, (11), 9 states have call predecessors, (11), 10 states have return successors, (15), 12 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-18 09:19:05,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 152 transitions. [2024-11-18 09:19:05,297 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 152 transitions. Word has length 70 [2024-11-18 09:19:05,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:19:05,299 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 152 transitions. [2024-11-18 09:19:05,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-18 09:19:05,299 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 152 transitions. [2024-11-18 09:19:05,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-18 09:19:05,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:19:05,301 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:19:05,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 09:19:05,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:19:05,502 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:19:05,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:19:05,503 INFO L85 PathProgramCache]: Analyzing trace with hash -489280420, now seen corresponding path program 1 times [2024-11-18 09:19:05,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:19:05,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749728281] [2024-11-18 09:19:05,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:19:05,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:19:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:19:05,588 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-18 09:19:05,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:19:05,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749728281] [2024-11-18 09:19:05,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749728281] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:19:05,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000332265] [2024-11-18 09:19:05,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:19:05,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:19:05,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:19:05,591 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) [2024-11-18 09:19:05,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 09:19:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:19:05,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:19:05,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:19:05,696 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-18 09:19:05,699 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:19:05,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000332265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:19:05,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:19:05,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 09:19:05,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328793110] [2024-11-18 09:19:05,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:19:05,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:19:05,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:19:05,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:19:05,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:19:05,701 INFO L87 Difference]: Start difference. First operand 129 states and 152 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 09:19:05,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:19:05,740 INFO L93 Difference]: Finished difference Result 179 states and 213 transitions. [2024-11-18 09:19:05,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:19:05,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2024-11-18 09:19:05,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:19:05,742 INFO L225 Difference]: With dead ends: 179 [2024-11-18 09:19:05,742 INFO L226 Difference]: Without dead ends: 129 [2024-11-18 09:19:05,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:19:05,743 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:19:05,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:19:05,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-18 09:19:05,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-11-18 09:19:05,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 107 states have (on average 1.158878504672897) internal successors, (124), 107 states have internal predecessors, (124), 11 states have call successors, (11), 9 states have call predecessors, (11), 10 states have return successors, (15), 12 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-18 09:19:05,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2024-11-18 09:19:05,781 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 70 [2024-11-18 09:19:05,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:19:05,782 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2024-11-18 09:19:05,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 09:19:05,782 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2024-11-18 09:19:05,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-18 09:19:05,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:19:05,783 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:19:05,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 09:19:05,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 09:19:05,984 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:19:05,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:19:05,985 INFO L85 PathProgramCache]: Analyzing trace with hash 763453850, now seen corresponding path program 1 times [2024-11-18 09:19:05,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:19:05,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940765538] [2024-11-18 09:19:05,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:19:05,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:19:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:19:06,054 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-18 09:19:06,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:19:06,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940765538] [2024-11-18 09:19:06,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940765538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:19:06,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307373182] [2024-11-18 09:19:06,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:19:06,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:19:06,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:19:06,057 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) [2024-11-18 09:19:06,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 09:19:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:19:06,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 09:19:06,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:19:06,145 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-18 09:19:06,145 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:19:06,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307373182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:19:06,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:19:06,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-18 09:19:06,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907202613] [2024-11-18 09:19:06,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:19:06,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:19:06,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:19:06,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:19:06,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:19:06,148 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 09:19:06,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:19:06,184 INFO L93 Difference]: Finished difference Result 196 states and 228 transitions. [2024-11-18 09:19:06,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:19:06,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2024-11-18 09:19:06,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:19:06,186 INFO L225 Difference]: With dead ends: 196 [2024-11-18 09:19:06,186 INFO L226 Difference]: Without dead ends: 123 [2024-11-18 09:19:06,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:19:06,187 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:19:06,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:19:06,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-18 09:19:06,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2024-11-18 09:19:06,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (13), 11 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-18 09:19:06,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 138 transitions. [2024-11-18 09:19:06,215 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 138 transitions. Word has length 70 [2024-11-18 09:19:06,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:19:06,215 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 138 transitions. [2024-11-18 09:19:06,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 09:19:06,217 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 138 transitions. [2024-11-18 09:19:06,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-18 09:19:06,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:19:06,217 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:19:06,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 09:19:06,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:19:06,419 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:19:06,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:19:06,419 INFO L85 PathProgramCache]: Analyzing trace with hash 536211579, now seen corresponding path program 1 times [2024-11-18 09:19:06,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:19:06,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523347772] [2024-11-18 09:19:06,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:19:06,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:19:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:19:06,772 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 09:19:06,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:19:06,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523347772] [2024-11-18 09:19:06,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523347772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:19:06,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470379894] [2024-11-18 09:19:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:19:06,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:19:06,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:19:06,775 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) [2024-11-18 09:19:06,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 09:19:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:19:06,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 09:19:06,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:19:07,010 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 09:19:07,011 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:19:07,201 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-18 09:19:07,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470379894] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:19:07,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:19:07,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 7] total 22 [2024-11-18 09:19:07,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633664686] [2024-11-18 09:19:07,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:19:07,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 09:19:07,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:19:07,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 09:19:07,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2024-11-18 09:19:07,204 INFO L87 Difference]: Start difference. First operand 121 states and 138 transitions. Second operand has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 21 states have internal predecessors, (70), 6 states have call successors, (13), 2 states have call predecessors, (13), 8 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-18 09:19:07,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:19:07,720 INFO L93 Difference]: Finished difference Result 302 states and 351 transitions. [2024-11-18 09:19:07,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 09:19:07,721 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 21 states have internal predecessors, (70), 6 states have call successors, (13), 2 states have call predecessors, (13), 8 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) Word has length 70 [2024-11-18 09:19:07,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:19:07,723 INFO L225 Difference]: With dead ends: 302 [2024-11-18 09:19:07,723 INFO L226 Difference]: Without dead ends: 252 [2024-11-18 09:19:07,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2024-11-18 09:19:07,724 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 62 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 09:19:07,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 423 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 09:19:07,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-18 09:19:07,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 123. [2024-11-18 09:19:07,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 103 states have (on average 1.1359223300970873) internal successors, (117), 102 states have internal predecessors, (117), 10 states have call successors, (10), 9 states have call predecessors, (10), 9 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-18 09:19:07,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 139 transitions. [2024-11-18 09:19:07,759 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 139 transitions. Word has length 70 [2024-11-18 09:19:07,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:19:07,759 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 139 transitions. [2024-11-18 09:19:07,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 21 states have internal predecessors, (70), 6 states have call successors, (13), 2 states have call predecessors, (13), 8 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-18 09:19:07,760 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 139 transitions. [2024-11-18 09:19:07,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-18 09:19:07,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:19:07,761 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:19:07,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 09:19:07,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:19:07,966 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:19:07,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:19:07,966 INFO L85 PathProgramCache]: Analyzing trace with hash 786086104, now seen corresponding path program 1 times [2024-11-18 09:19:07,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:19:07,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033796419] [2024-11-18 09:19:07,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:19:07,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:19:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:19:08,237 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 09:19:08,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:19:08,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033796419] [2024-11-18 09:19:08,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033796419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:19:08,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918354640] [2024-11-18 09:19:08,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:19:08,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:19:08,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:19:08,240 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) [2024-11-18 09:19:08,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 09:19:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:19:08,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 09:19:08,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:19:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 09:19:08,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:19:08,831 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 09:19:08,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918354640] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:19:08,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:19:08,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16, 14] total 29 [2024-11-18 09:19:08,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5476981] [2024-11-18 09:19:08,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:19:08,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-18 09:19:08,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:19:08,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-18 09:19:08,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2024-11-18 09:19:08,835 INFO L87 Difference]: Start difference. First operand 123 states and 139 transitions. Second operand has 29 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 25 states have internal predecessors, (75), 7 states have call successors, (11), 4 states have call predecessors, (11), 10 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-18 09:19:09,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:19:09,330 INFO L93 Difference]: Finished difference Result 319 states and 364 transitions. [2024-11-18 09:19:09,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 09:19:09,330 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 25 states have internal predecessors, (75), 7 states have call successors, (11), 4 states have call predecessors, (11), 10 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 70 [2024-11-18 09:19:09,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:19:09,332 INFO L225 Difference]: With dead ends: 319 [2024-11-18 09:19:09,332 INFO L226 Difference]: Without dead ends: 263 [2024-11-18 09:19:09,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=184, Invalid=1298, Unknown=0, NotChecked=0, Total=1482 [2024-11-18 09:19:09,334 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 67 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:19:09,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 409 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 09:19:09,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-11-18 09:19:09,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 201. [2024-11-18 09:19:09,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 165 states have (on average 1.1515151515151516) internal successors, (190), 165 states have internal predecessors, (190), 19 states have call successors, (19), 16 states have call predecessors, (19), 16 states have return successors, (21), 19 states have call predecessors, (21), 19 states have call successors, (21) [2024-11-18 09:19:09,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2024-11-18 09:19:09,384 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 70 [2024-11-18 09:19:09,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:19:09,384 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2024-11-18 09:19:09,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 25 states have internal predecessors, (75), 7 states have call successors, (11), 4 states have call predecessors, (11), 10 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-18 09:19:09,384 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2024-11-18 09:19:09,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-18 09:19:09,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:19:09,386 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:19:09,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 09:19:09,589 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,SelfDestructingSolverStorable12 [2024-11-18 09:19:09,590 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:19:09,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:19:09,590 INFO L85 PathProgramCache]: Analyzing trace with hash 2133417632, now seen corresponding path program 4 times [2024-11-18 09:19:09,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:19:09,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322212926] [2024-11-18 09:19:09,590 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:19:09,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:19:09,603 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:19:09,604 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:19:09,704 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 09:19:09,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:19:09,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322212926] [2024-11-18 09:19:09,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322212926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:19:09,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090811617] [2024-11-18 09:19:09,705 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:19:09,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:19:09,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:19:09,707 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) [2024-11-18 09:19:09,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 09:19:09,791 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:19:09,791 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:19:09,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:19:09,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:19:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 40 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 09:19:09,904 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:19:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 19 proven. 30 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 09:19:09,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090811617] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:19:09,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:19:09,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-18 09:19:09,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556857257] [2024-11-18 09:19:09,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:19:09,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 09:19:09,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:19:10,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 09:19:10,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:19:10,000 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 09:19:10,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:19:10,180 INFO L93 Difference]: Finished difference Result 330 states and 376 transitions. [2024-11-18 09:19:10,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 09:19:10,182 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 72 [2024-11-18 09:19:10,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:19:10,183 INFO L225 Difference]: With dead ends: 330 [2024-11-18 09:19:10,183 INFO L226 Difference]: Without dead ends: 226 [2024-11-18 09:19:10,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 134 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:19:10,185 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 17 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:19:10,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 191 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:19:10,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-18 09:19:10,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 217. [2024-11-18 09:19:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 181 states have (on average 1.132596685082873) internal successors, (205), 181 states have internal predecessors, (205), 19 states have call successors, (19), 16 states have call predecessors, (19), 16 states have return successors, (21), 19 states have call predecessors, (21), 19 states have call successors, (21) [2024-11-18 09:19:10,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 245 transitions. [2024-11-18 09:19:10,225 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 245 transitions. Word has length 72 [2024-11-18 09:19:10,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:19:10,225 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 245 transitions. [2024-11-18 09:19:10,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 09:19:10,225 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 245 transitions. [2024-11-18 09:19:10,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-18 09:19:10,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:19:10,226 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:19:10,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-18 09:19:10,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-18 09:19:10,427 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:19:10,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:19:10,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1215091816, now seen corresponding path program 2 times [2024-11-18 09:19:10,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:19:10,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849584291] [2024-11-18 09:19:10,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:19:10,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:19:10,449 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:19:10,452 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:19:10,588 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 1 proven. 37 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-18 09:19:10,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:19:10,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849584291] [2024-11-18 09:19:10,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849584291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:19:10,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20387183] [2024-11-18 09:19:10,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:19:10,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:19:10,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:19:10,594 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) [2024-11-18 09:19:10,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 09:19:10,689 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:19:10,689 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:19:10,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:19:10,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:19:10,785 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 09:19:10,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:19:10,866 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-18 09:19:10,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20387183] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:19:10,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:19:10,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-18 09:19:10,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027205236] [2024-11-18 09:19:10,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:19:10,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 09:19:10,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:19:10,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 09:19:10,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-11-18 09:19:10,868 INFO L87 Difference]: Start difference. First operand 217 states and 245 transitions. Second operand has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 09:19:11,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:19:11,088 INFO L93 Difference]: Finished difference Result 379 states and 431 transitions. [2024-11-18 09:19:11,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 09:19:11,089 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 74 [2024-11-18 09:19:11,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:19:11,090 INFO L225 Difference]: With dead ends: 379 [2024-11-18 09:19:11,090 INFO L226 Difference]: Without dead ends: 222 [2024-11-18 09:19:11,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 134 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2024-11-18 09:19:11,091 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 55 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:19:11,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 155 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:19:11,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-18 09:19:11,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 191. [2024-11-18 09:19:11,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 164 states have (on average 1.1402439024390243) internal successors, (187), 163 states have internal predecessors, (187), 15 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2024-11-18 09:19:11,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 218 transitions. [2024-11-18 09:19:11,128 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 218 transitions. Word has length 74 [2024-11-18 09:19:11,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:19:11,128 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 218 transitions. [2024-11-18 09:19:11,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 09:19:11,129 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 218 transitions. [2024-11-18 09:19:11,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-18 09:19:11,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:19:11,129 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:19:11,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 09:19:11,330 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,SelfDestructingSolverStorable14 [2024-11-18 09:19:11,330 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:19:11,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:19:11,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1328935008, now seen corresponding path program 5 times [2024-11-18 09:19:11,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:19:11,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14184941] [2024-11-18 09:19:11,331 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:19:11,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:19:11,352 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-18 09:19:11,352 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:19:11,432 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-18 09:19:11,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:19:11,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14184941] [2024-11-18 09:19:11,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14184941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:19:11,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805980586] [2024-11-18 09:19:11,433 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:19:11,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:19:11,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:19:11,435 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) [2024-11-18 09:19:11,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 09:19:11,543 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-18 09:19:11,543 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:19:11,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:19:11,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:19:11,621 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 56 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 09:19:11,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:19:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-18 09:19:11,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805980586] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:19:11,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:19:11,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-18 09:19:11,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474848357] [2024-11-18 09:19:11,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:19:11,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 09:19:11,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:19:11,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 09:19:11,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:19:11,692 INFO L87 Difference]: Start difference. First operand 191 states and 218 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 09:19:11,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:19:11,888 INFO L93 Difference]: Finished difference Result 237 states and 268 transitions. [2024-11-18 09:19:11,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 09:19:11,889 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 77 [2024-11-18 09:19:11,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:19:11,891 INFO L225 Difference]: With dead ends: 237 [2024-11-18 09:19:11,891 INFO L226 Difference]: Without dead ends: 186 [2024-11-18 09:19:11,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 143 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:19:11,892 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 24 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:19:11,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 201 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:19:11,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-18 09:19:11,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 182. [2024-11-18 09:19:11,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 155 states have (on average 1.1096774193548387) internal successors, (172), 154 states have internal predecessors, (172), 15 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2024-11-18 09:19:11,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 203 transitions. [2024-11-18 09:19:11,922 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 203 transitions. Word has length 77 [2024-11-18 09:19:11,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:19:11,922 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 203 transitions. [2024-11-18 09:19:11,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 09:19:11,922 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 203 transitions. [2024-11-18 09:19:11,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-18 09:19:11,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:19:11,923 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:19:11,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-18 09:19:12,123 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,SelfDestructingSolverStorable15 [2024-11-18 09:19:12,124 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:19:12,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:19:12,124 INFO L85 PathProgramCache]: Analyzing trace with hash 911926688, now seen corresponding path program 6 times [2024-11-18 09:19:12,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:19:12,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769848183] [2024-11-18 09:19:12,124 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:19:12,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:19:12,171 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-18 09:19:12,171 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:19:12,282 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 68 proven. 22 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-18 09:19:12,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:19:12,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769848183] [2024-11-18 09:19:12,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769848183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:19:12,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695982069] [2024-11-18 09:19:12,283 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:19:12,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:19:12,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:19:12,285 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) [2024-11-18 09:19:12,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 09:19:15,423 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-18 09:19:15,423 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:19:15,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:19:15,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:19:15,506 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 77 proven. 22 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 09:19:15,506 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:19:15,589 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 56 proven. 35 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 09:19:15,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695982069] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:19:15,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:19:15,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2024-11-18 09:19:15,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682359540] [2024-11-18 09:19:15,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:19:15,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 09:19:15,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:19:15,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 09:19:15,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-18 09:19:15,591 INFO L87 Difference]: Start difference. First operand 182 states and 203 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 09:19:15,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:19:15,871 INFO L93 Difference]: Finished difference Result 231 states and 254 transitions. [2024-11-18 09:19:15,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 09:19:15,872 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 81 [2024-11-18 09:19:15,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:19:15,873 INFO L225 Difference]: With dead ends: 231 [2024-11-18 09:19:15,873 INFO L226 Difference]: Without dead ends: 183 [2024-11-18 09:19:15,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 158 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2024-11-18 09:19:15,874 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 20 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:19:15,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 401 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:19:15,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-18 09:19:15,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 174. [2024-11-18 09:19:15,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 149 states have (on average 1.0939597315436242) internal successors, (163), 147 states have internal predecessors, (163), 14 states have call successors, (14), 11 states have call predecessors, (14), 10 states have return successors, (15), 15 states have call predecessors, (15), 14 states have call successors, (15) [2024-11-18 09:19:15,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 192 transitions. [2024-11-18 09:19:15,904 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 192 transitions. Word has length 81 [2024-11-18 09:19:15,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:19:15,905 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 192 transitions. [2024-11-18 09:19:15,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 09:19:15,905 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 192 transitions. [2024-11-18 09:19:15,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-18 09:19:15,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:19:15,906 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:19:15,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 09:19:16,107 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,SelfDestructingSolverStorable16 [2024-11-18 09:19:16,107 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:19:16,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:19:16,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1054227458, now seen corresponding path program 1 times [2024-11-18 09:19:16,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:19:16,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823659921] [2024-11-18 09:19:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:19:16,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:19:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 09:19:16,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1789959643] [2024-11-18 09:19:16,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:19:16,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:19:16,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:19:16,145 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) [2024-11-18 09:19:16,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 09:19:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:19:16,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-18 09:19:16,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:19:17,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:19:17,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-18 09:19:17,265 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:19:17,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-18 09:19:17,364 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:19:17,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-18 09:19:18,123 INFO L349 Elim1Store]: treesize reduction 208, result has 33.5 percent of original size [2024-11-18 09:19:18,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 74 treesize of output 142 [2024-11-18 09:19:23,650 INFO L349 Elim1Store]: treesize reduction 140, result has 38.1 percent of original size [2024-11-18 09:19:23,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 313 treesize of output 334 [2024-11-18 09:19:24,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 43 [2024-11-18 09:19:24,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 154 [2024-11-18 09:19:24,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 150 [2024-11-18 09:19:24,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 98 [2024-11-18 09:19:27,106 INFO L349 Elim1Store]: treesize reduction 124, result has 35.8 percent of original size [2024-11-18 09:19:27,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 298 treesize of output 295 [2024-11-18 09:19:27,497 INFO L349 Elim1Store]: treesize reduction 94, result has 24.8 percent of original size [2024-11-18 09:19:27,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 121 treesize of output 250 [2024-11-18 09:19:27,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:19:27,739 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:27,739 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:27,741 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:27,761 INFO L349 Elim1Store]: treesize reduction 32, result has 49.2 percent of original size [2024-11-18 09:19:27,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 72 treesize of output 94 [2024-11-18 09:19:27,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:19:27,798 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:27,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:19:27,801 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:27,804 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:27,805 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:27,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 76 [2024-11-18 09:19:27,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:19:27,830 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:27,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:19:27,833 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:27,835 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:27,836 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:27,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 76 [2024-11-18 09:19:27,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:19:27,857 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:27,859 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:27,860 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:27,861 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:27,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 78 [2024-11-18 09:19:27,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:19:27,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:19:27,908 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:27,909 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:27,912 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:27,939 INFO L349 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2024-11-18 09:19:27,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 70 treesize of output 84 [2024-11-18 09:19:27,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:19:27,977 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:27,978 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:27,980 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:28,003 INFO L349 Elim1Store]: treesize reduction 32, result has 49.2 percent of original size [2024-11-18 09:19:28,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 72 treesize of output 94 [2024-11-18 09:19:28,037 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:28,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:19:28,042 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:28,043 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:28,044 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:28,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 76 [2024-11-18 09:19:28,071 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:28,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:19:28,074 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:28,077 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:28,077 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:28,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 76 [2024-11-18 09:19:28,096 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:28,097 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:28,098 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:28,098 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:28,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 78 [2024-11-18 09:19:28,117 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:28,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:19:28,119 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:28,121 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:28,121 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:28,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 78 [2024-11-18 09:19:28,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:19:28,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:19:28,141 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:28,141 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:28,144 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 09:19:28,161 INFO L349 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2024-11-18 09:19:28,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 70 treesize of output 84