/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loops/eureka_01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 17:23:11,525 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 17:23:11,596 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 17:23:11,600 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 17:23:11,600 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 17:23:11,622 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 17:23:11,623 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 17:23:11,623 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 17:23:11,623 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 17:23:11,626 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 17:23:11,626 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 17:23:11,627 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 17:23:11,627 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 17:23:11,628 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 17:23:11,628 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 17:23:11,629 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 17:23:11,629 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 17:23:11,629 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 17:23:11,629 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 17:23:11,630 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 17:23:11,630 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 17:23:11,630 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 17:23:11,630 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 17:23:11,631 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 17:23:11,631 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 17:23:11,631 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 17:23:11,631 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 17:23:11,631 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 17:23:11,632 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 17:23:11,632 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 17:23:11,633 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 17:23:11,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 17:23:11,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 17:23:11,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 17:23:11,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 17:23:11,633 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 17:23:11,633 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 17:23:11,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 17:23:11,634 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 17:23:11,634 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 17:23:11,634 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 17:23:11,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 17:23:11,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 17:23:11,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 17:23:11,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 17:23:11,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 17:23:11,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 17:23:11,832 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 17:23:11,833 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 17:23:11,833 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_01-2.c [2023-12-19 17:23:12,746 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 17:23:12,886 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 17:23:12,886 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_01-2.c [2023-12-19 17:23:12,891 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5122cf79/f491ded57bdd47f4ba62052494c3601a/FLAGb8d6aaedf [2023-12-19 17:23:13,320 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5122cf79/f491ded57bdd47f4ba62052494c3601a [2023-12-19 17:23:13,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 17:23:13,322 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 17:23:13,323 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 17:23:13,323 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 17:23:13,336 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 17:23:13,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:23:13" (1/1) ... [2023-12-19 17:23:13,337 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@924f88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:23:13, skipping insertion in model container [2023-12-19 17:23:13,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:23:13" (1/1) ... [2023-12-19 17:23:13,354 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 17:23:13,446 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_01-2.c[323,336] [2023-12-19 17:23:13,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 17:23:13,475 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 17:23:13,482 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_01-2.c[323,336] [2023-12-19 17:23:13,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 17:23:13,504 INFO L206 MainTranslator]: Completed translation [2023-12-19 17:23:13,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:23:13 WrapperNode [2023-12-19 17:23:13,504 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 17:23:13,505 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 17:23:13,505 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 17:23:13,505 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 17:23:13,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:23:13" (1/1) ... [2023-12-19 17:23:13,528 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:23:13" (1/1) ... [2023-12-19 17:23:13,550 INFO L138 Inliner]: procedures = 13, calls = 100, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 198 [2023-12-19 17:23:13,550 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 17:23:13,551 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 17:23:13,551 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 17:23:13,551 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 17:23:13,558 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:23:13" (1/1) ... [2023-12-19 17:23:13,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:23:13" (1/1) ... [2023-12-19 17:23:13,561 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:23:13" (1/1) ... [2023-12-19 17:23:13,570 INFO L175 MemorySlicer]: Split 78 memory accesses to 5 slices as follows [2, 22, 9, 22, 23]. 29 percent of accesses are in the largest equivalence class. The 62 initializations are split as follows [2, 20, 0, 20, 20]. The 3 writes are split as follows [0, 0, 3, 0, 0]. [2023-12-19 17:23:13,570 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:23:13" (1/1) ... [2023-12-19 17:23:13,570 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:23:13" (1/1) ... [2023-12-19 17:23:13,576 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:23:13" (1/1) ... [2023-12-19 17:23:13,578 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:23:13" (1/1) ... [2023-12-19 17:23:13,579 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:23:13" (1/1) ... [2023-12-19 17:23:13,580 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:23:13" (1/1) ... [2023-12-19 17:23:13,582 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 17:23:13,583 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 17:23:13,583 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 17:23:13,583 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 17:23:13,583 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:23:13" (1/1) ... [2023-12-19 17:23:13,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 17:23:13,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:23:13,621 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) [2023-12-19 17:23:13,651 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 [2023-12-19 17:23:13,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 17:23:13,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 17:23:13,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 17:23:13,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 17:23:13,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 17:23:13,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-19 17:23:13,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-19 17:23:13,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-19 17:23:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-19 17:23:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-19 17:23:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-19 17:23:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-19 17:23:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 17:23:13,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 17:23:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-19 17:23:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-19 17:23:13,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-19 17:23:13,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-19 17:23:13,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-19 17:23:13,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-19 17:23:13,764 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 17:23:13,767 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 17:23:13,920 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 17:23:13,961 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 17:23:13,962 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-19 17:23:13,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:23:13 BoogieIcfgContainer [2023-12-19 17:23:13,962 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 17:23:13,964 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 17:23:13,964 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 17:23:13,967 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 17:23:13,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 05:23:13" (1/3) ... [2023-12-19 17:23:13,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7581db3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 05:23:13, skipping insertion in model container [2023-12-19 17:23:13,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:23:13" (2/3) ... [2023-12-19 17:23:13,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7581db3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 05:23:13, skipping insertion in model container [2023-12-19 17:23:13,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:23:13" (3/3) ... [2023-12-19 17:23:13,972 INFO L112 eAbstractionObserver]: Analyzing ICFG eureka_01-2.c [2023-12-19 17:23:13,983 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 17:23:13,983 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 17:23:14,011 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 17:23:14,015 INFO L357 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, mHoare=true, 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;@5c123771, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 17:23:14,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 17:23:14,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.75) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:14,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-19 17:23:14,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:23:14,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:23:14,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:23:14,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:23:14,030 INFO L85 PathProgramCache]: Analyzing trace with hash 969093160, now seen corresponding path program 1 times [2023-12-19 17:23:14,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:23:14,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265246298] [2023-12-19 17:23:14,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:23:14,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:23:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:23:14,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:23:14,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:23:14,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265246298] [2023-12-19 17:23:14,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265246298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:23:14,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 17:23:14,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 17:23:14,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480834477] [2023-12-19 17:23:14,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:23:14,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 17:23:14,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:23:14,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 17:23:14,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 17:23:14,189 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.75) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:14,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:23:14,221 INFO L93 Difference]: Finished difference Result 40 states and 63 transitions. [2023-12-19 17:23:14,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 17:23:14,223 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-19 17:23:14,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:23:14,228 INFO L225 Difference]: With dead ends: 40 [2023-12-19 17:23:14,228 INFO L226 Difference]: Without dead ends: 19 [2023-12-19 17:23:14,230 INFO L412 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 [2023-12-19 17:23:14,234 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:23:14,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:23:14,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-19 17:23:14,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-12-19 17:23:14,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:14,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2023-12-19 17:23:14,259 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 10 [2023-12-19 17:23:14,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:23:14,259 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2023-12-19 17:23:14,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:14,260 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2023-12-19 17:23:14,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-19 17:23:14,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:23:14,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:23:14,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 17:23:14,262 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:23:14,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:23:14,264 INFO L85 PathProgramCache]: Analyzing trace with hash 428348859, now seen corresponding path program 1 times [2023-12-19 17:23:14,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:23:14,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368940145] [2023-12-19 17:23:14,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:23:14,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:23:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:23:14,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:23:14,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:23:14,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368940145] [2023-12-19 17:23:14,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368940145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:23:14,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 17:23:14,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 17:23:14,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359660728] [2023-12-19 17:23:14,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:23:14,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 17:23:14,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:23:14,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 17:23:14,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 17:23:14,423 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:14,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:23:14,470 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2023-12-19 17:23:14,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 17:23:14,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-19 17:23:14,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:23:14,472 INFO L225 Difference]: With dead ends: 37 [2023-12-19 17:23:14,472 INFO L226 Difference]: Without dead ends: 22 [2023-12-19 17:23:14,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 17:23:14,473 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:23:14,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 26 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:23:14,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-19 17:23:14,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2023-12-19 17:23:14,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:14,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2023-12-19 17:23:14,481 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 10 [2023-12-19 17:23:14,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:23:14,481 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2023-12-19 17:23:14,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:14,481 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2023-12-19 17:23:14,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-19 17:23:14,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:23:14,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:23:14,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 17:23:14,483 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:23:14,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:23:14,484 INFO L85 PathProgramCache]: Analyzing trace with hash 980259699, now seen corresponding path program 1 times [2023-12-19 17:23:14,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:23:14,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736880234] [2023-12-19 17:23:14,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:23:14,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:23:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:23:14,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 17:23:14,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:23:14,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736880234] [2023-12-19 17:23:14,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736880234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:23:14,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 17:23:14,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 17:23:14,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322199944] [2023-12-19 17:23:14,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:23:14,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 17:23:14,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:23:14,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 17:23:14,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 17:23:14,597 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:14,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:23:14,644 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2023-12-19 17:23:14,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 17:23:14,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-19 17:23:14,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:23:14,649 INFO L225 Difference]: With dead ends: 44 [2023-12-19 17:23:14,649 INFO L226 Difference]: Without dead ends: 35 [2023-12-19 17:23:14,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 17:23:14,654 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:23:14,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 19 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:23:14,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-19 17:23:14,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 21. [2023-12-19 17:23:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:14,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2023-12-19 17:23:14,660 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 13 [2023-12-19 17:23:14,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:23:14,661 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-12-19 17:23:14,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:14,661 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2023-12-19 17:23:14,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-19 17:23:14,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:23:14,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:23:14,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 17:23:14,662 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:23:14,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:23:14,665 INFO L85 PathProgramCache]: Analyzing trace with hash 263824409, now seen corresponding path program 1 times [2023-12-19 17:23:14,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:23:14,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189473209] [2023-12-19 17:23:14,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:23:14,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:23:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:23:14,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 17:23:14,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:23:14,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189473209] [2023-12-19 17:23:14,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189473209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:23:14,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 17:23:14,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 17:23:14,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389555725] [2023-12-19 17:23:14,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:23:14,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 17:23:14,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:23:14,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 17:23:14,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 17:23:14,758 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:14,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:23:14,786 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2023-12-19 17:23:14,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 17:23:14,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-19 17:23:14,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:23:14,787 INFO L225 Difference]: With dead ends: 38 [2023-12-19 17:23:14,787 INFO L226 Difference]: Without dead ends: 24 [2023-12-19 17:23:14,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 17:23:14,791 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 25 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:23:14,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 31 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:23:14,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-19 17:23:14,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2023-12-19 17:23:14,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:14,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2023-12-19 17:23:14,798 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 16 [2023-12-19 17:23:14,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:23:14,798 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2023-12-19 17:23:14,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:14,798 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2023-12-19 17:23:14,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-19 17:23:14,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:23:14,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:23:14,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 17:23:14,800 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:23:14,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:23:14,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1728732986, now seen corresponding path program 1 times [2023-12-19 17:23:14,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:23:14,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273445554] [2023-12-19 17:23:14,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:23:14,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:23:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:23:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 17:23:14,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:23:14,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273445554] [2023-12-19 17:23:14,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273445554] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:23:14,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 17:23:14,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 17:23:14,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541442305] [2023-12-19 17:23:14,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:23:14,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 17:23:14,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:23:14,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 17:23:14,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 17:23:14,878 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:14,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:23:14,927 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2023-12-19 17:23:14,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 17:23:14,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-19 17:23:14,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:23:14,928 INFO L225 Difference]: With dead ends: 42 [2023-12-19 17:23:14,928 INFO L226 Difference]: Without dead ends: 36 [2023-12-19 17:23:14,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 17:23:14,929 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 34 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:23:14,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 17 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:23:14,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-19 17:23:14,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 23. [2023-12-19 17:23:14,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:14,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2023-12-19 17:23:14,936 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 19 [2023-12-19 17:23:14,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:23:14,936 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2023-12-19 17:23:14,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:14,936 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2023-12-19 17:23:14,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-19 17:23:14,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:23:14,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:23:14,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 17:23:14,937 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:23:14,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:23:14,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1802843216, now seen corresponding path program 1 times [2023-12-19 17:23:14,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:23:14,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877623759] [2023-12-19 17:23:14,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:23:14,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:23:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:23:15,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 17:23:15,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:23:15,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877623759] [2023-12-19 17:23:15,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877623759] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:23:15,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338239761] [2023-12-19 17:23:15,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:23:15,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:23:15,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:23:15,030 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) [2023-12-19 17:23:15,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 17:23:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:23:15,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 17:23:15,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:23:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 17:23:15,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:23:15,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 17:23:15,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338239761] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:23:15,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:23:15,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-12-19 17:23:15,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335352157] [2023-12-19 17:23:15,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:23:15,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 17:23:15,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:23:15,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 17:23:15,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-12-19 17:23:15,200 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:15,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:23:15,250 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2023-12-19 17:23:15,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 17:23:15,250 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-19 17:23:15,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:23:15,250 INFO L225 Difference]: With dead ends: 50 [2023-12-19 17:23:15,250 INFO L226 Difference]: Without dead ends: 32 [2023-12-19 17:23:15,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-12-19 17:23:15,251 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 17 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:23:15,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 33 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:23:15,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-19 17:23:15,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-19 17:23:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:15,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2023-12-19 17:23:15,258 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 21 [2023-12-19 17:23:15,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:23:15,258 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2023-12-19 17:23:15,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:15,258 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2023-12-19 17:23:15,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-19 17:23:15,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:23:15,259 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:23:15,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 17:23:15,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-19 17:23:15,464 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:23:15,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:23:15,465 INFO L85 PathProgramCache]: Analyzing trace with hash 228079768, now seen corresponding path program 2 times [2023-12-19 17:23:15,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:23:15,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26382468] [2023-12-19 17:23:15,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:23:15,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:23:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:23:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 17:23:15,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:23:15,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26382468] [2023-12-19 17:23:15,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26382468] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:23:15,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918277400] [2023-12-19 17:23:15,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:23:15,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:23:15,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:23:15,556 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) [2023-12-19 17:23:15,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 17:23:15,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:23:15,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:23:15,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 17:23:15,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:23:15,689 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 17:23:15,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 17:23:15,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918277400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:23:15,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 17:23:15,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 17:23:15,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17103216] [2023-12-19 17:23:15,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:23:15,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 17:23:15,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:23:15,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 17:23:15,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 17:23:15,690 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:15,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:23:15,730 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2023-12-19 17:23:15,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 17:23:15,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-19 17:23:15,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:23:15,732 INFO L225 Difference]: With dead ends: 69 [2023-12-19 17:23:15,732 INFO L226 Difference]: Without dead ends: 43 [2023-12-19 17:23:15,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 17:23:15,733 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:23:15,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 27 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:23:15,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-19 17:23:15,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 32. [2023-12-19 17:23:15,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:15,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2023-12-19 17:23:15,741 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 30 [2023-12-19 17:23:15,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:23:15,741 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2023-12-19 17:23:15,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:15,742 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2023-12-19 17:23:15,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-19 17:23:15,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:23:15,742 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:23:15,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 17:23:15,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-19 17:23:15,948 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:23:15,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:23:15,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1101460646, now seen corresponding path program 1 times [2023-12-19 17:23:15,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:23:15,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032598425] [2023-12-19 17:23:15,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:23:15,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:23:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:23:16,065 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 17:23:16,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:23:16,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032598425] [2023-12-19 17:23:16,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032598425] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:23:16,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592161534] [2023-12-19 17:23:16,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:23:16,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:23:16,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:23:16,067 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) [2023-12-19 17:23:16,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 17:23:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:23:16,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 17:23:16,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:23:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 17:23:16,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:23:16,304 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 17:23:16,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592161534] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:23:16,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:23:16,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-12-19 17:23:16,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681221924] [2023-12-19 17:23:16,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:23:16,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-19 17:23:16,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:23:16,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-19 17:23:16,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-12-19 17:23:16,307 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:16,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:23:16,376 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2023-12-19 17:23:16,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 17:23:16,376 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-19 17:23:16,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:23:16,377 INFO L225 Difference]: With dead ends: 55 [2023-12-19 17:23:16,377 INFO L226 Difference]: Without dead ends: 37 [2023-12-19 17:23:16,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-12-19 17:23:16,379 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:23:16,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 65 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:23:16,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-19 17:23:16,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2023-12-19 17:23:16,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:16,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2023-12-19 17:23:16,384 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 30 [2023-12-19 17:23:16,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:23:16,385 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2023-12-19 17:23:16,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:16,385 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2023-12-19 17:23:16,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-19 17:23:16,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:23:16,387 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:23:16,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 17:23:16,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:23:16,593 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:23:16,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:23:16,593 INFO L85 PathProgramCache]: Analyzing trace with hash 439389136, now seen corresponding path program 2 times [2023-12-19 17:23:16,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:23:16,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308328138] [2023-12-19 17:23:16,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:23:16,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:23:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:23:16,648 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-19 17:23:16,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:23:16,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308328138] [2023-12-19 17:23:16,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308328138] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:23:16,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721058074] [2023-12-19 17:23:16,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:23:16,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:23:16,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:23:16,650 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) [2023-12-19 17:23:16,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 17:23:16,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:23:16,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:23:16,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 17:23:16,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:23:16,771 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-19 17:23:16,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:23:16,802 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-19 17:23:16,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721058074] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:23:16,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:23:16,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-12-19 17:23:16,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242048184] [2023-12-19 17:23:16,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:23:16,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 17:23:16,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:23:16,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 17:23:16,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-12-19 17:23:16,804 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:16,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:23:16,847 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2023-12-19 17:23:16,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 17:23:16,847 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-19 17:23:16,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:23:16,848 INFO L225 Difference]: With dead ends: 60 [2023-12-19 17:23:16,848 INFO L226 Difference]: Without dead ends: 44 [2023-12-19 17:23:16,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2023-12-19 17:23:16,849 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 61 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:23:16,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 62 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:23:16,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-19 17:23:16,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-19 17:23:16,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 43 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:16,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2023-12-19 17:23:16,853 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 33 [2023-12-19 17:23:16,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:23:16,853 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2023-12-19 17:23:16,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:16,853 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2023-12-19 17:23:16,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-19 17:23:16,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:23:16,854 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:23:16,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 17:23:17,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:23:17,059 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:23:17,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:23:17,060 INFO L85 PathProgramCache]: Analyzing trace with hash 538648239, now seen corresponding path program 3 times [2023-12-19 17:23:17,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:23:17,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911503405] [2023-12-19 17:23:17,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:23:17,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:23:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:23:17,175 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-19 17:23:17,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:23:17,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911503405] [2023-12-19 17:23:17,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911503405] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:23:17,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662396133] [2023-12-19 17:23:17,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:23:17,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:23:17,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:23:17,177 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) [2023-12-19 17:23:17,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 17:23:17,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-19 17:23:17,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:23:17,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 17:23:17,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:23:17,343 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-19 17:23:17,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:23:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-19 17:23:17,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662396133] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:23:17,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:23:17,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 13 [2023-12-19 17:23:17,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960498620] [2023-12-19 17:23:17,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:23:17,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 17:23:17,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:23:17,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 17:23:17,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-19 17:23:17,394 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:17,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:23:17,804 INFO L93 Difference]: Finished difference Result 159 states and 208 transitions. [2023-12-19 17:23:17,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-19 17:23:17,805 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-19 17:23:17,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:23:17,805 INFO L225 Difference]: With dead ends: 159 [2023-12-19 17:23:17,805 INFO L226 Difference]: Without dead ends: 134 [2023-12-19 17:23:17,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=502, Invalid=980, Unknown=0, NotChecked=0, Total=1482 [2023-12-19 17:23:17,806 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 539 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:23:17,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 48 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:23:17,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-12-19 17:23:17,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 103. [2023-12-19 17:23:17,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.2843137254901962) internal successors, (131), 102 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:17,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 131 transitions. [2023-12-19 17:23:17,817 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 131 transitions. Word has length 42 [2023-12-19 17:23:17,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:23:17,817 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 131 transitions. [2023-12-19 17:23:17,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:17,817 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 131 transitions. [2023-12-19 17:23:17,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 17:23:17,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:23:17,818 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:23:17,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 17:23:18,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 17:23:18,027 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:23:18,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:23:18,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1078809925, now seen corresponding path program 4 times [2023-12-19 17:23:18,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:23:18,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084032660] [2023-12-19 17:23:18,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:23:18,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:23:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:23:18,246 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 262 proven. 35 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2023-12-19 17:23:18,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:23:18,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084032660] [2023-12-19 17:23:18,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084032660] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:23:18,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994046162] [2023-12-19 17:23:18,247 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 17:23:18,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:23:18,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:23:18,248 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) [2023-12-19 17:23:18,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 17:23:18,386 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 17:23:18,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:23:18,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 17:23:18,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:23:18,542 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 26 proven. 227 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2023-12-19 17:23:18,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:23:18,689 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 26 proven. 227 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2023-12-19 17:23:18,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994046162] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:23:18,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:23:18,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 24 [2023-12-19 17:23:18,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934476657] [2023-12-19 17:23:18,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:23:18,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-19 17:23:18,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:23:18,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-19 17:23:18,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2023-12-19 17:23:18,692 INFO L87 Difference]: Start difference. First operand 103 states and 131 transitions. Second operand has 24 states, 24 states have (on average 3.9166666666666665) internal successors, (94), 24 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:19,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:23:19,491 INFO L93 Difference]: Finished difference Result 305 states and 399 transitions. [2023-12-19 17:23:19,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-19 17:23:19,491 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.9166666666666665) internal successors, (94), 24 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-19 17:23:19,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:23:19,492 INFO L225 Difference]: With dead ends: 305 [2023-12-19 17:23:19,492 INFO L226 Difference]: Without dead ends: 237 [2023-12-19 17:23:19,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 183 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1716 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1347, Invalid=4659, Unknown=0, NotChecked=0, Total=6006 [2023-12-19 17:23:19,495 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1297 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:23:19,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1297 Valid, 93 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 17:23:19,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-19 17:23:19,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 123. [2023-12-19 17:23:19,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.2704918032786885) internal successors, (155), 122 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:19,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 155 transitions. [2023-12-19 17:23:19,505 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 155 transitions. Word has length 101 [2023-12-19 17:23:19,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:23:19,505 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 155 transitions. [2023-12-19 17:23:19,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.9166666666666665) internal successors, (94), 24 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:19,505 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 155 transitions. [2023-12-19 17:23:19,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-19 17:23:19,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:23:19,506 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 6, 6, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:23:19,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 17:23:19,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:23:19,712 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:23:19,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:23:19,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1691455241, now seen corresponding path program 5 times [2023-12-19 17:23:19,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:23:19,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146064087] [2023-12-19 17:23:19,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:23:19,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:23:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:23:19,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 367 proven. 51 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2023-12-19 17:23:19,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:23:19,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146064087] [2023-12-19 17:23:19,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146064087] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:23:19,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799670309] [2023-12-19 17:23:19,948 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 17:23:19,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:23:19,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:23:19,949 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) [2023-12-19 17:23:19,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 17:23:30,889 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2023-12-19 17:23:30,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:23:30,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 17:23:30,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:23:31,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 614 proven. 51 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-19 17:23:31,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:23:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 493 proven. 172 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-19 17:23:31,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799670309] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:23:31,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:23:31,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-12-19 17:23:31,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616192916] [2023-12-19 17:23:31,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:23:31,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-19 17:23:31,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:23:31,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-19 17:23:31,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=341, Unknown=0, NotChecked=0, Total=600 [2023-12-19 17:23:31,189 INFO L87 Difference]: Start difference. First operand 123 states and 155 transitions. Second operand has 25 states, 25 states have (on average 4.04) internal successors, (101), 24 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:31,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:23:31,348 INFO L93 Difference]: Finished difference Result 304 states and 423 transitions. [2023-12-19 17:23:31,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 17:23:31,348 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.04) internal successors, (101), 24 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2023-12-19 17:23:31,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:23:31,349 INFO L225 Difference]: With dead ends: 304 [2023-12-19 17:23:31,349 INFO L226 Difference]: Without dead ends: 219 [2023-12-19 17:23:31,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=392, Invalid=600, Unknown=0, NotChecked=0, Total=992 [2023-12-19 17:23:31,350 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 85 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:23:31,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 74 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:23:31,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-12-19 17:23:31,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2023-12-19 17:23:31,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.298165137614679) internal successors, (283), 218 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:31,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 283 transitions. [2023-12-19 17:23:31,365 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 283 transitions. Word has length 121 [2023-12-19 17:23:31,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:23:31,365 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 283 transitions. [2023-12-19 17:23:31,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.04) internal successors, (101), 24 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:31,365 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 283 transitions. [2023-12-19 17:23:31,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-19 17:23:31,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:23:31,367 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 6, 6, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:23:31,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 17:23:31,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:23:31,579 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:23:31,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:23:31,579 INFO L85 PathProgramCache]: Analyzing trace with hash 855553271, now seen corresponding path program 6 times [2023-12-19 17:23:31,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:23:31,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074748213] [2023-12-19 17:23:31,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:23:31,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:23:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:23:32,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4937 backedges. 1855 proven. 287 refuted. 0 times theorem prover too weak. 2795 trivial. 0 not checked. [2023-12-19 17:23:32,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:23:32,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074748213] [2023-12-19 17:23:32,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074748213] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:23:32,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049849551] [2023-12-19 17:23:32,218 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 17:23:32,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:23:32,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:23:32,219 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) [2023-12-19 17:23:32,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 17:23:33,640 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-19 17:23:33,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:23:33,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 17:23:33,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:23:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4937 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4901 trivial. 0 not checked. [2023-12-19 17:23:33,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:23:34,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4937 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4901 trivial. 0 not checked. [2023-12-19 17:23:34,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049849551] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:23:34,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:23:34,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 9] total 32 [2023-12-19 17:23:34,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78912981] [2023-12-19 17:23:34,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:23:34,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-19 17:23:34,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:23:34,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-19 17:23:34,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=780, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 17:23:34,271 INFO L87 Difference]: Start difference. First operand 219 states and 283 transitions. Second operand has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 32 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:42,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:23:42,337 INFO L93 Difference]: Finished difference Result 1079 states and 1427 transitions. [2023-12-19 17:23:42,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2023-12-19 17:23:42,338 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 32 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2023-12-19 17:23:42,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:23:42,341 INFO L225 Difference]: With dead ends: 1079 [2023-12-19 17:23:42,341 INFO L226 Difference]: Without dead ends: 922 [2023-12-19 17:23:42,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26616 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=19974, Invalid=49458, Unknown=0, NotChecked=0, Total=69432 [2023-12-19 17:23:42,357 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3195 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3195 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 17:23:42,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3195 Valid, 90 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 17:23:42,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2023-12-19 17:23:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 247. [2023-12-19 17:23:42,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 1.2804878048780488) internal successors, (315), 246 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:42,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 315 transitions. [2023-12-19 17:23:42,379 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 315 transitions. Word has length 217 [2023-12-19 17:23:42,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:23:42,379 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 315 transitions. [2023-12-19 17:23:42,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 32 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:42,379 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 315 transitions. [2023-12-19 17:23:42,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-19 17:23:42,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:23:42,381 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 14, 14, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:23:42,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-19 17:23:42,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 17:23:42,588 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:23:42,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:23:42,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1628110019, now seen corresponding path program 7 times [2023-12-19 17:23:42,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:23:42,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300032877] [2023-12-19 17:23:42,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:23:42,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:23:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:23:43,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 2122 proven. 330 refuted. 0 times theorem prover too weak. 3351 trivial. 0 not checked. [2023-12-19 17:23:43,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:23:43,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300032877] [2023-12-19 17:23:43,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300032877] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:23:43,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427327218] [2023-12-19 17:23:43,336 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 17:23:43,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:23:43,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:23:43,337 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) [2023-12-19 17:23:43,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 17:23:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:23:43,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 1553 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 17:23:43,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:23:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 2122 proven. 330 refuted. 0 times theorem prover too weak. 3351 trivial. 0 not checked. [2023-12-19 17:23:43,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:23:44,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 2122 proven. 330 refuted. 0 times theorem prover too weak. 3351 trivial. 0 not checked. [2023-12-19 17:23:44,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427327218] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:23:44,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:23:44,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2023-12-19 17:23:44,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033386614] [2023-12-19 17:23:44,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:23:44,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-19 17:23:44,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:23:44,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-19 17:23:44,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=637, Invalid=923, Unknown=0, NotChecked=0, Total=1560 [2023-12-19 17:23:44,218 INFO L87 Difference]: Start difference. First operand 247 states and 315 transitions. Second operand has 40 states, 40 states have (on average 3.425) internal successors, (137), 39 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:44,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:23:44,407 INFO L93 Difference]: Finished difference Result 489 states and 647 transitions. [2023-12-19 17:23:44,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-19 17:23:44,407 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.425) internal successors, (137), 39 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 245 [2023-12-19 17:23:44,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:23:44,408 INFO L225 Difference]: With dead ends: 489 [2023-12-19 17:23:44,408 INFO L226 Difference]: Without dead ends: 307 [2023-12-19 17:23:44,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 456 SyntacticMatches, 12 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1181 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=737, Invalid=1155, Unknown=0, NotChecked=0, Total=1892 [2023-12-19 17:23:44,412 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 101 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:23:44,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 86 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:23:44,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-12-19 17:23:44,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2023-12-19 17:23:44,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.2908496732026145) internal successors, (395), 306 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:44,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 395 transitions. [2023-12-19 17:23:44,434 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 395 transitions. Word has length 245 [2023-12-19 17:23:44,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:23:44,435 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 395 transitions. [2023-12-19 17:23:44,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.425) internal successors, (137), 39 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:44,436 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 395 transitions. [2023-12-19 17:23:44,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-19 17:23:44,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:23:44,438 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 14, 14, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:23:44,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 17:23:44,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-19 17:23:44,644 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:23:44,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:23:44,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1561023321, now seen corresponding path program 8 times [2023-12-19 17:23:44,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:23:44,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137839730] [2023-12-19 17:23:44,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:23:44,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:23:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:23:45,203 INFO L134 CoverageAnalysis]: Checked inductivity of 10053 backedges. 0 proven. 7462 refuted. 0 times theorem prover too weak. 2591 trivial. 0 not checked. [2023-12-19 17:23:45,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:23:45,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137839730] [2023-12-19 17:23:45,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137839730] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:23:45,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651209270] [2023-12-19 17:23:45,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:23:45,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:23:45,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:23:45,206 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) [2023-12-19 17:23:45,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 17:23:45,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:23:45,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:23:45,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 1913 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 17:23:45,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:23:46,184 INFO L134 CoverageAnalysis]: Checked inductivity of 10053 backedges. 0 proven. 7462 refuted. 0 times theorem prover too weak. 2591 trivial. 0 not checked. [2023-12-19 17:23:46,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:23:46,452 INFO L134 CoverageAnalysis]: Checked inductivity of 10053 backedges. 0 proven. 7462 refuted. 0 times theorem prover too weak. 2591 trivial. 0 not checked. [2023-12-19 17:23:46,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651209270] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:23:46,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:23:46,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-12-19 17:23:46,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950534456] [2023-12-19 17:23:46,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:23:46,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-19 17:23:46,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:23:46,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-19 17:23:46,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=216, Unknown=0, NotChecked=0, Total=342 [2023-12-19 17:23:46,454 INFO L87 Difference]: Start difference. First operand 307 states and 395 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:46,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:23:46,558 INFO L93 Difference]: Finished difference Result 427 states and 538 transitions. [2023-12-19 17:23:46,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 17:23:46,559 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 305 [2023-12-19 17:23:46,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:23:46,561 INFO L225 Difference]: With dead ends: 427 [2023-12-19 17:23:46,561 INFO L226 Difference]: Without dead ends: 391 [2023-12-19 17:23:46,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 598 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=216, Unknown=0, NotChecked=0, Total=342 [2023-12-19 17:23:46,562 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 187 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:23:46,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 84 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:23:46,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-19 17:23:46,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 370. [2023-12-19 17:23:46,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 1.2981029810298104) internal successors, (479), 369 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:46,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 479 transitions. [2023-12-19 17:23:46,592 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 479 transitions. Word has length 305 [2023-12-19 17:23:46,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:23:46,592 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 479 transitions. [2023-12-19 17:23:46,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:23:46,593 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 479 transitions. [2023-12-19 17:23:46,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2023-12-19 17:23:46,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:23:46,595 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 14, 14, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:23:46,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 17:23:46,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 17:23:46,803 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:23:46,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:23:46,804 INFO L85 PathProgramCache]: Analyzing trace with hash 726149133, now seen corresponding path program 9 times [2023-12-19 17:23:46,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:23:46,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606857230] [2023-12-19 17:23:46,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:23:46,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:23:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:23:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 15616 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 15420 trivial. 0 not checked. [2023-12-19 17:23:47,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:23:47,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606857230] [2023-12-19 17:23:47,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606857230] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:23:47,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618641185] [2023-12-19 17:23:47,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:23:47,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:23:47,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:23:47,828 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) [2023-12-19 17:23:47,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 17:23:48,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-19 17:23:48,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:23:48,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-19 17:23:48,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:23:48,533 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 23 treesize of output 1 [2023-12-19 17:23:48,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 44 treesize of output 24 [2023-12-19 17:23:50,605 INFO L349 Elim1Store]: treesize reduction 86, result has 28.3 percent of original size [2023-12-19 17:23:50,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 54 [2023-12-19 17:23:50,720 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:23:50,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 10 [2023-12-19 17:23:50,728 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 15 treesize of output 7 [2023-12-19 17:23:50,780 INFO L134 CoverageAnalysis]: Checked inductivity of 15616 backedges. 524 proven. 4 refuted. 0 times theorem prover too weak. 15088 trivial. 0 not checked. [2023-12-19 17:23:50,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:24:02,670 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 146 treesize of output 138 [2023-12-19 17:24:02,726 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:24:02,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 282750 treesize of output 256686 [2023-12-19 17:24:30,381 INFO L134 CoverageAnalysis]: Checked inductivity of 15616 backedges. 501 proven. 351 refuted. 0 times theorem prover too weak. 14764 trivial. 0 not checked. [2023-12-19 17:24:30,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618641185] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:24:30,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:24:30,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 17] total 44 [2023-12-19 17:24:30,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491900679] [2023-12-19 17:24:30,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:24:30,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-19 17:24:30,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:24:30,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-19 17:24:30,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=1649, Unknown=3, NotChecked=0, Total=1980 [2023-12-19 17:24:30,383 INFO L87 Difference]: Start difference. First operand 370 states and 479 transitions. Second operand has 45 states, 45 states have (on average 2.2666666666666666) internal successors, (102), 44 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:24:31,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:24:32,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:24:43,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:24:44,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:24:46,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:24:56,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:24:58,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:25:00,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:25:01,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:25:02,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:25:09,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:25:11,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:25:17,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:25:20,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:25:31,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-12-19 17:25:33,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:25:36,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-12-19 17:25:37,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:25:38,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:25:38,471 INFO L93 Difference]: Finished difference Result 1127 states and 1451 transitions. [2023-12-19 17:25:38,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-12-19 17:25:38,472 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.2666666666666666) internal successors, (102), 44 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 368 [2023-12-19 17:25:38,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:25:38,474 INFO L225 Difference]: With dead ends: 1127 [2023-12-19 17:25:38,474 INFO L226 Difference]: Without dead ends: 781 [2023-12-19 17:25:38,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6848 ImplicationChecksByTransitivity, 47.0s TimeCoverageRelationStatistics Valid=4917, Invalid=13704, Unknown=11, NotChecked=0, Total=18632 [2023-12-19 17:25:38,476 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1216 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 164 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.6s IncrementalHoareTripleChecker+Time [2023-12-19 17:25:38,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1216 Valid, 189 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 729 Invalid, 22 Unknown, 0 Unchecked, 34.6s Time] [2023-12-19 17:25:38,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2023-12-19 17:25:38,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 683. [2023-12-19 17:25:38,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.3049853372434017) internal successors, (890), 682 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:25:38,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 890 transitions. [2023-12-19 17:25:38,556 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 890 transitions. Word has length 368 [2023-12-19 17:25:38,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:25:38,556 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 890 transitions. [2023-12-19 17:25:38,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.2666666666666666) internal successors, (102), 44 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:25:38,556 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 890 transitions. [2023-12-19 17:25:38,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2023-12-19 17:25:38,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:25:38,559 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 99, 17, 17, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:25:38,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 17:25:38,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 17:25:38,765 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:25:38,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:25:38,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1515170543, now seen corresponding path program 1 times [2023-12-19 17:25:38,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:25:38,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276490511] [2023-12-19 17:25:38,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:25:38,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:25:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:25:39,778 INFO L134 CoverageAnalysis]: Checked inductivity of 15709 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 15420 trivial. 0 not checked. [2023-12-19 17:25:39,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:25:39,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276490511] [2023-12-19 17:25:39,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276490511] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:25:39,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948908307] [2023-12-19 17:25:39,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:25:39,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:25:39,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:25:39,780 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) [2023-12-19 17:25:39,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 17:25:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:25:40,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 2317 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 17:25:40,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:25:40,926 INFO L134 CoverageAnalysis]: Checked inductivity of 15709 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 15420 trivial. 0 not checked. [2023-12-19 17:25:40,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:25:41,448 INFO L134 CoverageAnalysis]: Checked inductivity of 15709 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 15420 trivial. 0 not checked. [2023-12-19 17:25:41,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948908307] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:25:41,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:25:41,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2023-12-19 17:25:41,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617775971] [2023-12-19 17:25:41,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:25:41,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-19 17:25:41,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:25:41,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-19 17:25:41,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=687, Invalid=1035, Unknown=0, NotChecked=0, Total=1722 [2023-12-19 17:25:41,450 INFO L87 Difference]: Start difference. First operand 683 states and 890 transitions. Second operand has 42 states, 42 states have (on average 2.6666666666666665) internal successors, (112), 41 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:25:42,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:25:42,382 INFO L93 Difference]: Finished difference Result 2886 states and 3797 transitions. [2023-12-19 17:25:42,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-19 17:25:42,382 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.6666666666666665) internal successors, (112), 41 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2023-12-19 17:25:42,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:25:42,390 INFO L225 Difference]: With dead ends: 2886 [2023-12-19 17:25:42,390 INFO L226 Difference]: Without dead ends: 2880 [2023-12-19 17:25:42,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 768 GetRequests, 710 SyntacticMatches, 16 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1401 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=737, Invalid=1155, Unknown=0, NotChecked=0, Total=1892 [2023-12-19 17:25:42,391 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1261 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 17:25:42,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1261 Valid, 189 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 17:25:42,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2023-12-19 17:25:42,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 689. [2023-12-19 17:25:42,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 1.302325581395349) internal successors, (896), 688 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:25:42,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 896 transitions. [2023-12-19 17:25:42,505 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 896 transitions. Word has length 374 [2023-12-19 17:25:42,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:25:42,505 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 896 transitions. [2023-12-19 17:25:42,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.6666666666666665) internal successors, (112), 41 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:25:42,506 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 896 transitions. [2023-12-19 17:25:42,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2023-12-19 17:25:42,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:25:42,509 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 99, 20, 20, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:25:42,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-19 17:25:42,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 17:25:42,718 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:25:42,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:25:42,718 INFO L85 PathProgramCache]: Analyzing trace with hash 765685395, now seen corresponding path program 2 times [2023-12-19 17:25:42,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:25:42,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347919919] [2023-12-19 17:25:42,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:25:42,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:25:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:25:58,545 INFO L134 CoverageAnalysis]: Checked inductivity of 15820 backedges. 8010 proven. 97 refuted. 0 times theorem prover too weak. 7713 trivial. 0 not checked. [2023-12-19 17:25:58,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:25:58,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347919919] [2023-12-19 17:25:58,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347919919] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:25:58,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233033143] [2023-12-19 17:25:58,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:25:58,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:25:58,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:25:58,546 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) [2023-12-19 17:25:58,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 17:25:59,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:25:59,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:25:59,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 2359 conjuncts, 132 conjunts are in the unsatisfiable core [2023-12-19 17:25:59,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:26:07,111 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 21 treesize of output 21 [2023-12-19 17:26:08,508 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:26:08,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 23 [2023-12-19 17:26:08,513 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:26:08,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2023-12-19 17:26:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 15820 backedges. 4014 proven. 5814 refuted. 0 times theorem prover too weak. 5992 trivial. 0 not checked. [2023-12-19 17:26:08,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:26:08,967 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 89 treesize of output 81 [2023-12-19 17:26:08,990 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:26:08,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 187 treesize of output 175 [2023-12-19 17:26:24,067 INFO L134 CoverageAnalysis]: Checked inductivity of 15820 backedges. 200 proven. 5619 refuted. 0 times theorem prover too weak. 10001 trivial. 0 not checked. [2023-12-19 17:26:24,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233033143] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:26:24,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:26:24,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 33, 33] total 71 [2023-12-19 17:26:24,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403513512] [2023-12-19 17:26:24,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:26:24,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-12-19 17:26:24,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:26:24,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-12-19 17:26:24,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=4858, Unknown=0, NotChecked=0, Total=5112 [2023-12-19 17:26:24,069 INFO L87 Difference]: Start difference. First operand 689 states and 896 transitions. Second operand has 72 states, 72 states have (on average 3.2222222222222223) internal successors, (232), 71 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:26:33,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:26:33,898 INFO L93 Difference]: Finished difference Result 1344 states and 1755 transitions. [2023-12-19 17:26:33,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-19 17:26:33,899 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 3.2222222222222223) internal successors, (232), 71 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 380 [2023-12-19 17:26:33,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:26:33,902 INFO L225 Difference]: With dead ends: 1344 [2023-12-19 17:26:33,902 INFO L226 Difference]: Without dead ends: 975 [2023-12-19 17:26:33,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 697 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3301 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=831, Invalid=15171, Unknown=0, NotChecked=0, Total=16002 [2023-12-19 17:26:33,904 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 82 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 6970 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 2311 SdHoareTripleChecker+Invalid, 6970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-19 17:26:33,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 2311 Invalid, 6970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6970 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-19 17:26:33,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2023-12-19 17:26:34,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 958. [2023-12-19 17:26:34,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 1.3072100313479624) internal successors, (1251), 957 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:26:34,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1251 transitions. [2023-12-19 17:26:34,058 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1251 transitions. Word has length 380 [2023-12-19 17:26:34,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:26:34,058 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1251 transitions. [2023-12-19 17:26:34,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 3.2222222222222223) internal successors, (232), 71 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:26:34,058 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1251 transitions. [2023-12-19 17:26:34,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2023-12-19 17:26:34,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:26:34,061 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 93, 20, 20, 7, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:26:34,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 17:26:34,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 17:26:34,272 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:26:34,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:26:34,272 INFO L85 PathProgramCache]: Analyzing trace with hash -855832041, now seen corresponding path program 3 times [2023-12-19 17:26:34,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:26:34,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019339907] [2023-12-19 17:26:34,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:26:34,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:27:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:28:07,723 INFO L134 CoverageAnalysis]: Checked inductivity of 15820 backedges. 3156 proven. 222 refuted. 0 times theorem prover too weak. 12442 trivial. 0 not checked. [2023-12-19 17:28:07,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:28:07,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019339907] [2023-12-19 17:28:07,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019339907] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:28:07,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549655684] [2023-12-19 17:28:07,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:28:07,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:28:07,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:28:07,726 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:28:07,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 17:28:08,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-12-19 17:28:08,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:28:08,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 72 conjunts are in the unsatisfiable core [2023-12-19 17:28:08,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:28:18,681 INFO L349 Elim1Store]: treesize reduction 41, result has 43.1 percent of original size [2023-12-19 17:28:18,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 55 [2023-12-19 17:28:19,434 INFO L349 Elim1Store]: treesize reduction 196, result has 45.9 percent of original size [2023-12-19 17:28:19,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 137 treesize of output 234 [2023-12-19 17:28:20,988 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:28:20,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 606 treesize of output 554 [2023-12-19 17:28:21,028 INFO L349 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2023-12-19 17:28:21,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 424 treesize of output 348 [2023-12-19 17:28:22,356 INFO L134 CoverageAnalysis]: Checked inductivity of 15820 backedges. 694 proven. 505 refuted. 0 times theorem prover too weak. 14621 trivial. 0 not checked. [2023-12-19 17:28:22,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:28:23,289 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 99 treesize of output 91 [2023-12-19 17:28:23,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:28:23,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 234 treesize of output 222 [2023-12-19 17:28:40,209 INFO L134 CoverageAnalysis]: Checked inductivity of 15820 backedges. 9 proven. 1301 refuted. 0 times theorem prover too weak. 14510 trivial. 0 not checked. [2023-12-19 17:28:40,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549655684] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:28:40,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:28:40,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 13, 16] total 67 [2023-12-19 17:28:40,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192860825] [2023-12-19 17:28:40,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:28:40,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-19 17:28:40,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:28:40,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-19 17:28:40,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=4350, Unknown=0, NotChecked=0, Total=4556 [2023-12-19 17:28:40,211 INFO L87 Difference]: Start difference. First operand 958 states and 1251 transitions. Second operand has 68 states, 68 states have (on average 1.9264705882352942) internal successors, (131), 67 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:31:09,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:31:09,799 INFO L93 Difference]: Finished difference Result 4976 states and 6287 transitions. [2023-12-19 17:31:09,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 649 states. [2023-12-19 17:31:09,799 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.9264705882352942) internal successors, (131), 67 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 380 [2023-12-19 17:31:09,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:31:09,810 INFO L225 Difference]: With dead ends: 4976 [2023-12-19 17:31:09,810 INFO L226 Difference]: Without dead ends: 4021 [2023-12-19 17:31:09,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1448 GetRequests, 738 SyntacticMatches, 0 SemanticMatches, 710 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232600 ImplicationChecksByTransitivity, 148.6s TimeCoverageRelationStatistics Valid=53355, Invalid=452877, Unknown=0, NotChecked=0, Total=506232 [2023-12-19 17:31:09,832 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 1763 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 4406 mSolverCounterSat, 911 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1763 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 5317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 911 IncrementalHoareTripleChecker+Valid, 4406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-19 17:31:09,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1763 Valid, 955 Invalid, 5317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [911 Valid, 4406 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-19 17:31:09,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2023-12-19 17:31:10,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 1930. [2023-12-19 17:31:10,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1929 states have (on average 1.3203732503888024) internal successors, (2547), 1929 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:31:10,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2547 transitions. [2023-12-19 17:31:10,335 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2547 transitions. Word has length 380 [2023-12-19 17:31:10,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:31:10,336 INFO L495 AbstractCegarLoop]: Abstraction has 1930 states and 2547 transitions. [2023-12-19 17:31:10,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.9264705882352942) internal successors, (131), 67 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:31:10,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2547 transitions. [2023-12-19 17:31:10,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2023-12-19 17:31:10,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:31:10,340 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 87, 20, 20, 13, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:31:10,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 17:31:10,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:31:10,548 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:31:10,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:31:10,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1087122661, now seen corresponding path program 4 times [2023-12-19 17:31:10,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:31:10,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013519108] [2023-12-19 17:31:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:31:10,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:31:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:31:31,473 INFO L134 CoverageAnalysis]: Checked inductivity of 15820 backedges. 5274 proven. 729 refuted. 0 times theorem prover too weak. 9817 trivial. 0 not checked. [2023-12-19 17:31:31,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:31:31,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013519108] [2023-12-19 17:31:31,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013519108] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:31:31,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292975792] [2023-12-19 17:31:31,473 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 17:31:31,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:31:31,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:31:31,474 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:31:31,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process Received shutdown request... [2023-12-19 17:37:01,119 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 17:37:01,120 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 17:37:02,320 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forcibly destroying the process [2023-12-19 17:37:02,320 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-19 17:37:02,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-19 17:37:02,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 137 [2023-12-19 17:37:02,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 17:37:02,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 17:37:02,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2023-12-19 17:37:02,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334620077] [2023-12-19 17:37:02,361 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 17:37:02,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-19 17:37:02,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:37:02,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-19 17:37:02,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1316, Unknown=0, NotChecked=0, Total=1406 [2023-12-19 17:37:02,362 INFO L87 Difference]: Start difference. First operand 1930 states and 2547 transitions. Second operand has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 37 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:37:02,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 17:37:02,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=90, Invalid=1316, Unknown=0, NotChecked=0, Total=1406 [2023-12-19 17:37:02,364 INFO L413 NwaCegarLoop]: 0 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, 0 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 [2023-12-19 17:37:02,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:37:02,365 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 17:37:02,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 17:37:02,366 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (1930states) and FLOYD_HOARE automaton (currently 2 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-19 17:37:02,368 INFO L445 BasicCegarLoop]: Path program histogram: [9, 4, 2, 1, 1, 1, 1, 1] [2023-12-19 17:37:02,370 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 17:37:02,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 05:37:02 BoogieIcfgContainer [2023-12-19 17:37:02,371 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 17:37:02,371 INFO L158 Benchmark]: Toolchain (without parser) took 829048.94ms. Allocated memory was 267.4MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 223.3MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 528.5MB. Max. memory is 8.0GB. [2023-12-19 17:37:02,371 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 188.7MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 17:37:02,371 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.51ms. Allocated memory is still 267.4MB. Free memory was 223.3MB in the beginning and 210.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-19 17:37:02,372 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.19ms. Allocated memory is still 267.4MB. Free memory was 210.7MB in the beginning and 208.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 17:37:02,372 INFO L158 Benchmark]: Boogie Preprocessor took 31.44ms. Allocated memory is still 267.4MB. Free memory was 208.6MB in the beginning and 206.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 17:37:02,372 INFO L158 Benchmark]: RCFGBuilder took 379.50ms. Allocated memory is still 267.4MB. Free memory was 206.0MB in the beginning and 185.5MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-19 17:37:02,372 INFO L158 Benchmark]: TraceAbstraction took 828407.45ms. Allocated memory was 267.4MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 185.0MB in the beginning and 1.7GB in the end (delta: -1.5GB). Peak memory consumption was 490.8MB. Max. memory is 8.0GB. [2023-12-19 17:37:02,373 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53ms. Allocated memory is still 188.7MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 181.51ms. Allocated memory is still 267.4MB. Free memory was 223.3MB in the beginning and 210.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.19ms. Allocated memory is still 267.4MB. Free memory was 210.7MB in the beginning and 208.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.44ms. Allocated memory is still 267.4MB. Free memory was 208.6MB in the beginning and 206.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 379.50ms. Allocated memory is still 267.4MB. Free memory was 206.0MB in the beginning and 185.5MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 828407.45ms. Allocated memory was 267.4MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 185.0MB in the beginning and 1.7GB in the end (delta: -1.5GB). Peak memory consumption was 490.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 7]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 7). Cancelled while NwaCegarLoop was constructing difference of abstraction (1930states) and FLOYD_HOARE automaton (currently 2 states, 38 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 828.4s, OverallIterations: 20, TraceHistogramMax: 100, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 238.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 mSolverCounterUnknown, 9943 SdHoareTripleChecker+Valid, 45.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9943 mSDsluCounter, 4424 SdHoareTripleChecker+Invalid, 44.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4108 mSDsCounter, 1763 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13881 IncrementalHoareTripleChecker+Invalid, 15666 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1763 mSolverCounterUnsat, 316 mSDtfsCounter, 13881 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6589 GetRequests, 5003 SyntacticMatches, 32 SemanticMatches, 1554 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274699 ImplicationChecksByTransitivity, 216.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1930occurred in iteration=19, InterpolantAutomatonStates: 1241, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 19 MinimizatonAttempts, 5282 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 116.0s SatisfiabilityAnalysisTime, 136.1s InterpolantComputationTime, 5742 NumberOfCodeBlocks, 4940 NumberOfCodeBlocksAsserted, 91 NumberOfCheckSat, 8312 ConstructedInterpolants, 10 QuantifiedInterpolants, 271939 SizeOfPredicates, 86 NumberOfNonLiveVariables, 12199 ConjunctsInSsa, 368 ConjunctsInUnsatCore, 47 InterpolantComputations, 6 PerfectInterpolantSequences, 232411/272712 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown