/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 false -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 [2023-12-21 03:58:22,809 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 03:58:22,866 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 03:58:22,870 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 03:58:22,870 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 03:58:22,889 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 03:58:22,889 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 03:58:22,890 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 03:58:22,890 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 03:58:22,890 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 03:58:22,890 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 03:58:22,891 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 03:58:22,893 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 03:58:22,896 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 03:58:22,896 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 03:58:22,896 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 03:58:22,897 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 03:58:22,897 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 03:58:22,898 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 03:58:22,898 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 03:58:22,898 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 03:58:22,899 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 03:58:22,899 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 03:58:22,899 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 03:58:22,899 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 03:58:22,899 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 03:58:22,899 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 03:58:22,900 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 03:58:22,900 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 03:58:22,900 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 03:58:22,901 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 03:58:22,901 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 03:58:22,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 03:58:22,901 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 03:58:22,901 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 03:58:22,901 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 03:58:22,901 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 03:58:22,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 03:58:22,902 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 03:58:22,902 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 03:58:22,902 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 03:58:22,902 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 03:58:22,902 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 03:58:22,902 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 03:58:23,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 03:58:23,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 03:58:23,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 03:58:23,092 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 03:58:23,092 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 03:58:23,093 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_01-2.c [2023-12-21 03:58:23,973 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 03:58:24,106 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 03:58:24,106 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_01-2.c [2023-12-21 03:58:24,111 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/852a48648/23d681ab5a8b4fe6ba514352470221ad/FLAGc8cc557ad [2023-12-21 03:58:24,119 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/852a48648/23d681ab5a8b4fe6ba514352470221ad [2023-12-21 03:58:24,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 03:58:24,122 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 03:58:24,123 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 03:58:24,123 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 03:58:24,130 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 03:58:24,131 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:58:24" (1/1) ... [2023-12-21 03:58:24,131 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f6a7a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:58:24, skipping insertion in model container [2023-12-21 03:58:24,131 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:58:24" (1/1) ... [2023-12-21 03:58:24,144 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 03:58:24,243 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] [2023-12-21 03:58:24,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 03:58:24,282 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 03:58:24,289 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] [2023-12-21 03:58:24,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 03:58:24,310 INFO L206 MainTranslator]: Completed translation [2023-12-21 03:58:24,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:58:24 WrapperNode [2023-12-21 03:58:24,311 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 03:58:24,311 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 03:58:24,311 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 03:58:24,311 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 03:58:24,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:58:24" (1/1) ... [2023-12-21 03:58:24,323 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:58:24" (1/1) ... [2023-12-21 03:58:24,347 INFO L138 Inliner]: procedures = 13, calls = 100, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 198 [2023-12-21 03:58:24,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 03:58:24,348 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 03:58:24,348 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 03:58:24,348 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 03:58:24,355 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:58:24" (1/1) ... [2023-12-21 03:58:24,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:58:24" (1/1) ... [2023-12-21 03:58:24,358 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:58:24" (1/1) ... [2023-12-21 03:58:24,369 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]. [2023-12-21 03:58:24,369 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:58:24" (1/1) ... [2023-12-21 03:58:24,369 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:58:24" (1/1) ... [2023-12-21 03:58:24,376 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:58:24" (1/1) ... [2023-12-21 03:58:24,380 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:58:24" (1/1) ... [2023-12-21 03:58:24,381 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:58:24" (1/1) ... [2023-12-21 03:58:24,382 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:58:24" (1/1) ... [2023-12-21 03:58:24,386 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 03:58:24,387 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 03:58:24,387 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 03:58:24,387 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 03:58:24,387 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:58:24" (1/1) ... [2023-12-21 03:58:24,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 03:58:24,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:58:24,449 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) [2023-12-21 03:58:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 03:58:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 03:58:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 03:58:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 03:58:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 03:58:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-21 03:58:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 03:58:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-21 03:58:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-21 03:58:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-21 03:58:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-21 03:58:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-21 03:58:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 03:58:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 03:58:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-21 03:58:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-21 03:58:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-21 03:58:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-21 03:58:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-21 03:58:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 03:58:24,490 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 [2023-12-21 03:58:24,548 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 03:58:24,551 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 03:58:24,781 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 03:58:24,803 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 03:58:24,804 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-21 03:58:24,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:58:24 BoogieIcfgContainer [2023-12-21 03:58:24,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 03:58:24,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 03:58:24,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 03:58:24,808 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 03:58:24,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:58:24" (1/3) ... [2023-12-21 03:58:24,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6da168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:58:24, skipping insertion in model container [2023-12-21 03:58:24,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:58:24" (2/3) ... [2023-12-21 03:58:24,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6da168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:58:24, skipping insertion in model container [2023-12-21 03:58:24,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:58:24" (3/3) ... [2023-12-21 03:58:24,810 INFO L112 eAbstractionObserver]: Analyzing ICFG eureka_01-2.c [2023-12-21 03:58:24,821 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 03:58:24,821 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 03:58:24,849 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 03:58:24,853 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;@681079e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 03:58:24,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 03:58:24,855 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) [2023-12-21 03:58:24,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-21 03:58:24,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:58:24,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 03:58:24,862 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:58:24,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:58:24,865 INFO L85 PathProgramCache]: Analyzing trace with hash 969093160, now seen corresponding path program 1 times [2023-12-21 03:58:24,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:58:24,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287861696] [2023-12-21 03:58:24,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:58:24,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:58:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:58:25,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:58:25,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:58:25,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287861696] [2023-12-21 03:58:25,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287861696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 03:58:25,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 03:58:25,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 03:58:25,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951237082] [2023-12-21 03:58:25,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 03:58:25,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 03:58:25,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:58:25,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 03:58:25,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 03:58:25,060 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) [2023-12-21 03:58:25,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:58:25,093 INFO L93 Difference]: Finished difference Result 40 states and 63 transitions. [2023-12-21 03:58:25,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 03:58:25,095 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 [2023-12-21 03:58:25,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:58:25,100 INFO L225 Difference]: With dead ends: 40 [2023-12-21 03:58:25,100 INFO L226 Difference]: Without dead ends: 19 [2023-12-21 03:58:25,102 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 [2023-12-21 03:58:25,105 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 [2023-12-21 03:58:25,105 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] [2023-12-21 03:58:25,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-21 03:58:25,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-12-21 03:58:25,124 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) [2023-12-21 03:58:25,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2023-12-21 03:58:25,125 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 10 [2023-12-21 03:58:25,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:58:25,125 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2023-12-21 03:58:25,125 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) [2023-12-21 03:58:25,126 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2023-12-21 03:58:25,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-21 03:58:25,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:58:25,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 03:58:25,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 03:58:25,127 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:58:25,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:58:25,127 INFO L85 PathProgramCache]: Analyzing trace with hash 428348859, now seen corresponding path program 1 times [2023-12-21 03:58:25,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:58:25,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044807176] [2023-12-21 03:58:25,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:58:25,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:58:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:58:25,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:58:25,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:58:25,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044807176] [2023-12-21 03:58:25,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044807176] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 03:58:25,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 03:58:25,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 03:58:25,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539219824] [2023-12-21 03:58:25,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 03:58:25,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 03:58:25,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:58:25,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 03:58:25,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 03:58:25,299 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) [2023-12-21 03:58:25,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:58:25,335 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2023-12-21 03:58:25,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 03:58:25,336 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 [2023-12-21 03:58:25,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:58:25,336 INFO L225 Difference]: With dead ends: 37 [2023-12-21 03:58:25,337 INFO L226 Difference]: Without dead ends: 22 [2023-12-21 03:58:25,337 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 [2023-12-21 03:58:25,338 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 [2023-12-21 03:58:25,338 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] [2023-12-21 03:58:25,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-21 03:58:25,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2023-12-21 03:58:25,341 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) [2023-12-21 03:58:25,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2023-12-21 03:58:25,341 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 10 [2023-12-21 03:58:25,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:58:25,342 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2023-12-21 03:58:25,342 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) [2023-12-21 03:58:25,342 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2023-12-21 03:58:25,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-21 03:58:25,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:58:25,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 03:58:25,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 03:58:25,343 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:58:25,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:58:25,343 INFO L85 PathProgramCache]: Analyzing trace with hash 980259699, now seen corresponding path program 1 times [2023-12-21 03:58:25,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:58:25,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060752998] [2023-12-21 03:58:25,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:58:25,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:58:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:58:25,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 03:58:25,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:58:25,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060752998] [2023-12-21 03:58:25,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060752998] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 03:58:25,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 03:58:25,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 03:58:25,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150139858] [2023-12-21 03:58:25,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 03:58:25,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 03:58:25,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:58:25,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 03:58:25,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 03:58:25,469 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) [2023-12-21 03:58:25,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:58:25,511 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2023-12-21 03:58:25,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 03:58:25,511 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 [2023-12-21 03:58:25,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:58:25,512 INFO L225 Difference]: With dead ends: 44 [2023-12-21 03:58:25,512 INFO L226 Difference]: Without dead ends: 35 [2023-12-21 03:58:25,512 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 [2023-12-21 03:58:25,513 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 [2023-12-21 03:58:25,513 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] [2023-12-21 03:58:25,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-21 03:58:25,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 21. [2023-12-21 03:58:25,516 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) [2023-12-21 03:58:25,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2023-12-21 03:58:25,517 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 13 [2023-12-21 03:58:25,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:58:25,517 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-12-21 03:58:25,517 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) [2023-12-21 03:58:25,517 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2023-12-21 03:58:25,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-21 03:58:25,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:58:25,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 03:58:25,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 03:58:25,518 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:58:25,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:58:25,518 INFO L85 PathProgramCache]: Analyzing trace with hash 263824409, now seen corresponding path program 1 times [2023-12-21 03:58:25,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:58:25,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860479232] [2023-12-21 03:58:25,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:58:25,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:58:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:58:25,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 03:58:25,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:58:25,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860479232] [2023-12-21 03:58:25,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860479232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 03:58:25,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 03:58:25,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 03:58:25,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568807154] [2023-12-21 03:58:25,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 03:58:25,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 03:58:25,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:58:25,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 03:58:25,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 03:58:25,598 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) [2023-12-21 03:58:25,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:58:25,630 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2023-12-21 03:58:25,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 03:58:25,630 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 [2023-12-21 03:58:25,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:58:25,632 INFO L225 Difference]: With dead ends: 38 [2023-12-21 03:58:25,632 INFO L226 Difference]: Without dead ends: 24 [2023-12-21 03:58:25,634 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 [2023-12-21 03:58:25,642 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 [2023-12-21 03:58:25,642 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] [2023-12-21 03:58:25,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-21 03:58:25,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2023-12-21 03:58:25,648 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) [2023-12-21 03:58:25,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2023-12-21 03:58:25,649 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 16 [2023-12-21 03:58:25,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:58:25,649 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2023-12-21 03:58:25,649 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) [2023-12-21 03:58:25,649 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2023-12-21 03:58:25,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-21 03:58:25,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:58:25,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 03:58:25,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 03:58:25,650 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:58:25,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:58:25,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1728732986, now seen corresponding path program 1 times [2023-12-21 03:58:25,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:58:25,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976912149] [2023-12-21 03:58:25,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:58:25,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:58:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:58:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 03:58:25,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:58:25,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976912149] [2023-12-21 03:58:25,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976912149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 03:58:25,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 03:58:25,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 03:58:25,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932556906] [2023-12-21 03:58:25,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 03:58:25,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 03:58:25,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:58:25,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 03:58:25,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 03:58:25,721 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) [2023-12-21 03:58:25,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:58:25,767 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2023-12-21 03:58:25,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 03:58:25,768 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 [2023-12-21 03:58:25,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:58:25,769 INFO L225 Difference]: With dead ends: 42 [2023-12-21 03:58:25,769 INFO L226 Difference]: Without dead ends: 36 [2023-12-21 03:58:25,770 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 [2023-12-21 03:58:25,771 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 [2023-12-21 03:58:25,771 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] [2023-12-21 03:58:25,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-21 03:58:25,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 23. [2023-12-21 03:58:25,778 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) [2023-12-21 03:58:25,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2023-12-21 03:58:25,778 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 19 [2023-12-21 03:58:25,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:58:25,779 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2023-12-21 03:58:25,779 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) [2023-12-21 03:58:25,779 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2023-12-21 03:58:25,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-21 03:58:25,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:58:25,780 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] [2023-12-21 03:58:25,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 03:58:25,781 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:58:25,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:58:25,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1802843216, now seen corresponding path program 1 times [2023-12-21 03:58:25,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:58:25,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264393802] [2023-12-21 03:58:25,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:58:25,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:58:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:58:25,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 03:58:25,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:58:25,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264393802] [2023-12-21 03:58:25,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264393802] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:58:25,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189813677] [2023-12-21 03:58:25,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:58:25,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:58:25,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:58:25,894 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) [2023-12-21 03:58:25,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 03:58:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:58:25,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 03:58:26,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:58:26,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 03:58:26,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:58:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 03:58:26,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189813677] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 03:58:26,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 03:58:26,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-12-21 03:58:26,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36080924] [2023-12-21 03:58:26,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 03:58:26,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 03:58:26,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:58:26,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 03:58:26,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-12-21 03:58:26,076 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) [2023-12-21 03:58:26,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:58:26,138 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2023-12-21 03:58:26,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 03:58:26,138 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 [2023-12-21 03:58:26,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:58:26,138 INFO L225 Difference]: With dead ends: 50 [2023-12-21 03:58:26,139 INFO L226 Difference]: Without dead ends: 32 [2023-12-21 03:58:26,139 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 [2023-12-21 03:58:26,140 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 03:58:26,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 33 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 03:58:26,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-21 03:58:26,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-21 03:58:26,147 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) [2023-12-21 03:58:26,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2023-12-21 03:58:26,148 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 21 [2023-12-21 03:58:26,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:58:26,148 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2023-12-21 03:58:26,148 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) [2023-12-21 03:58:26,148 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2023-12-21 03:58:26,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-21 03:58:26,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:58:26,149 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] [2023-12-21 03:58:26,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 03:58:26,355 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 [2023-12-21 03:58:26,355 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:58:26,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:58:26,356 INFO L85 PathProgramCache]: Analyzing trace with hash 228079768, now seen corresponding path program 2 times [2023-12-21 03:58:26,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:58:26,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672639597] [2023-12-21 03:58:26,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:58:26,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:58:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:58:26,437 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 03:58:26,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:58:26,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672639597] [2023-12-21 03:58:26,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672639597] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:58:26,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77762152] [2023-12-21 03:58:26,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 03:58:26,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:58:26,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:58:26,438 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) [2023-12-21 03:58:26,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 03:58:26,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 03:58:26,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 03:58:26,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 03:58:26,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:58:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 03:58:26,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 03:58:26,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77762152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 03:58:26,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 03:58:26,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-21 03:58:26,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557008072] [2023-12-21 03:58:26,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 03:58:26,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 03:58:26,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:58:26,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 03:58:26,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 03:58:26,571 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) [2023-12-21 03:58:26,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:58:26,609 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2023-12-21 03:58:26,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 03:58:26,609 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 [2023-12-21 03:58:26,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:58:26,611 INFO L225 Difference]: With dead ends: 69 [2023-12-21 03:58:26,611 INFO L226 Difference]: Without dead ends: 43 [2023-12-21 03:58:26,611 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 [2023-12-21 03:58:26,612 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 [2023-12-21 03:58:26,612 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] [2023-12-21 03:58:26,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-21 03:58:26,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 32. [2023-12-21 03:58:26,618 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) [2023-12-21 03:58:26,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2023-12-21 03:58:26,620 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 30 [2023-12-21 03:58:26,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:58:26,620 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2023-12-21 03:58:26,621 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) [2023-12-21 03:58:26,621 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2023-12-21 03:58:26,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-21 03:58:26,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:58:26,621 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] [2023-12-21 03:58:26,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 03:58:26,826 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 [2023-12-21 03:58:26,826 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:58:26,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:58:26,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1101460646, now seen corresponding path program 1 times [2023-12-21 03:58:26,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:58:26,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090988929] [2023-12-21 03:58:26,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:58:26,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:58:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:58:26,925 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 03:58:26,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:58:26,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090988929] [2023-12-21 03:58:26,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090988929] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:58:26,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457801282] [2023-12-21 03:58:26,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:58:26,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:58:26,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:58:26,927 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) [2023-12-21 03:58:26,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 03:58:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:58:27,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 03:58:27,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:58:27,104 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 03:58:27,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:58:27,184 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 03:58:27,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457801282] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 03:58:27,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 03:58:27,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-12-21 03:58:27,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607446269] [2023-12-21 03:58:27,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 03:58:27,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 03:58:27,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:58:27,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 03:58:27,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-12-21 03:58:27,185 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) [2023-12-21 03:58:27,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:58:27,254 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2023-12-21 03:58:27,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 03:58:27,254 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 [2023-12-21 03:58:27,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:58:27,255 INFO L225 Difference]: With dead ends: 55 [2023-12-21 03:58:27,255 INFO L226 Difference]: Without dead ends: 37 [2023-12-21 03:58:27,255 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 [2023-12-21 03:58:27,255 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-12-21 03:58:27,255 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] [2023-12-21 03:58:27,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-21 03:58:27,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2023-12-21 03:58:27,258 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) [2023-12-21 03:58:27,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2023-12-21 03:58:27,258 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 30 [2023-12-21 03:58:27,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:58:27,258 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2023-12-21 03:58:27,259 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) [2023-12-21 03:58:27,259 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2023-12-21 03:58:27,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 03:58:27,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:58:27,259 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] [2023-12-21 03:58:27,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 03:58:27,465 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 [2023-12-21 03:58:27,465 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:58:27,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:58:27,465 INFO L85 PathProgramCache]: Analyzing trace with hash 439389136, now seen corresponding path program 2 times [2023-12-21 03:58:27,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:58:27,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66999533] [2023-12-21 03:58:27,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:58:27,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:58:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:58:27,541 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-21 03:58:27,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:58:27,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66999533] [2023-12-21 03:58:27,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66999533] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:58:27,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933266318] [2023-12-21 03:58:27,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 03:58:27,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:58:27,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:58:27,543 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) [2023-12-21 03:58:27,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 03:58:27,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 03:58:27,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 03:58:27,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 03:58:27,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:58:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-21 03:58:27,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:58:27,697 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-21 03:58:27,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933266318] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 03:58:27,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 03:58:27,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-12-21 03:58:27,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089458203] [2023-12-21 03:58:27,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 03:58:27,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 03:58:27,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:58:27,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 03:58:27,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-12-21 03:58:27,699 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) [2023-12-21 03:58:27,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:58:27,748 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2023-12-21 03:58:27,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 03:58:27,749 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 [2023-12-21 03:58:27,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:58:27,749 INFO L225 Difference]: With dead ends: 60 [2023-12-21 03:58:27,749 INFO L226 Difference]: Without dead ends: 44 [2023-12-21 03:58:27,750 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 [2023-12-21 03:58:27,750 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 [2023-12-21 03:58:27,750 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] [2023-12-21 03:58:27,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-21 03:58:27,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-21 03:58:27,753 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) [2023-12-21 03:58:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2023-12-21 03:58:27,754 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 33 [2023-12-21 03:58:27,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:58:27,754 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2023-12-21 03:58:27,754 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) [2023-12-21 03:58:27,754 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2023-12-21 03:58:27,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-21 03:58:27,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:58:27,754 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] [2023-12-21 03:58:27,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-21 03:58:27,959 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 [2023-12-21 03:58:27,960 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:58:27,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:58:27,960 INFO L85 PathProgramCache]: Analyzing trace with hash 538648239, now seen corresponding path program 3 times [2023-12-21 03:58:27,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:58:27,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297531419] [2023-12-21 03:58:27,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:58:27,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:58:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:58:28,046 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-21 03:58:28,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:58:28,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297531419] [2023-12-21 03:58:28,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297531419] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:58:28,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964430378] [2023-12-21 03:58:28,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 03:58:28,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:58:28,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:58:28,048 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) [2023-12-21 03:58:28,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 03:58:28,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 03:58:28,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 03:58:28,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 03:58:28,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:58:28,253 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-21 03:58:28,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:58:28,352 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-21 03:58:28,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964430378] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 03:58:28,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 03:58:28,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 13 [2023-12-21 03:58:28,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435078202] [2023-12-21 03:58:28,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 03:58:28,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 03:58:28,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:58:28,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 03:58:28,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-21 03:58:28,354 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) [2023-12-21 03:58:28,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:58:28,727 INFO L93 Difference]: Finished difference Result 159 states and 208 transitions. [2023-12-21 03:58:28,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 03:58:28,727 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 [2023-12-21 03:58:28,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:58:28,729 INFO L225 Difference]: With dead ends: 159 [2023-12-21 03:58:28,729 INFO L226 Difference]: Without dead ends: 134 [2023-12-21 03:58:28,731 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 [2023-12-21 03:58:28,731 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 [2023-12-21 03:58:28,732 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] [2023-12-21 03:58:28,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-12-21 03:58:28,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 103. [2023-12-21 03:58:28,754 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) [2023-12-21 03:58:28,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 131 transitions. [2023-12-21 03:58:28,755 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 131 transitions. Word has length 42 [2023-12-21 03:58:28,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:58:28,755 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 131 transitions. [2023-12-21 03:58:28,755 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) [2023-12-21 03:58:28,755 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 131 transitions. [2023-12-21 03:58:28,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 03:58:28,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:58:28,757 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] [2023-12-21 03:58:28,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 03:58:28,964 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 [2023-12-21 03:58:28,964 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:58:28,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:58:28,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1078809925, now seen corresponding path program 4 times [2023-12-21 03:58:28,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:58:28,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828246312] [2023-12-21 03:58:28,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:58:28,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:58:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:58:29,202 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 262 proven. 35 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2023-12-21 03:58:29,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:58:29,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828246312] [2023-12-21 03:58:29,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828246312] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:58:29,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361812286] [2023-12-21 03:58:29,202 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 03:58:29,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:58:29,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:58:29,203 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) [2023-12-21 03:58:29,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 03:58:29,348 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 03:58:29,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 03:58:29,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 03:58:29,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:58:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 26 proven. 227 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2023-12-21 03:58:29,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:58:29,638 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 26 proven. 227 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2023-12-21 03:58:29,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361812286] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 03:58:29,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 03:58:29,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 24 [2023-12-21 03:58:29,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257007286] [2023-12-21 03:58:29,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 03:58:29,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 03:58:29,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:58:29,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 03:58:29,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2023-12-21 03:58:29,639 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) [2023-12-21 03:58:30,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:58:30,418 INFO L93 Difference]: Finished difference Result 305 states and 399 transitions. [2023-12-21 03:58:30,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-21 03:58:30,419 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 [2023-12-21 03:58:30,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:58:30,419 INFO L225 Difference]: With dead ends: 305 [2023-12-21 03:58:30,419 INFO L226 Difference]: Without dead ends: 237 [2023-12-21 03:58:30,421 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 [2023-12-21 03:58:30,422 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 [2023-12-21 03:58:30,422 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] [2023-12-21 03:58:30,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-21 03:58:30,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 123. [2023-12-21 03:58:30,430 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) [2023-12-21 03:58:30,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 155 transitions. [2023-12-21 03:58:30,431 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 155 transitions. Word has length 101 [2023-12-21 03:58:30,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:58:30,431 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 155 transitions. [2023-12-21 03:58:30,431 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) [2023-12-21 03:58:30,431 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 155 transitions. [2023-12-21 03:58:30,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-21 03:58:30,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:58:30,432 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] [2023-12-21 03:58:30,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 03:58:30,637 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 [2023-12-21 03:58:30,638 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:58:30,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:58:30,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1691455241, now seen corresponding path program 5 times [2023-12-21 03:58:30,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:58:30,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481106497] [2023-12-21 03:58:30,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:58:30,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:58:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:58:30,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 367 proven. 51 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2023-12-21 03:58:30,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:58:30,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481106497] [2023-12-21 03:58:30,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481106497] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:58:30,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881749271] [2023-12-21 03:58:30,831 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 03:58:30,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:58:30,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:58:30,832 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) [2023-12-21 03:58:30,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 03:58:40,394 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2023-12-21 03:58:40,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 03:58:40,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 03:58:40,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:58:40,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 614 proven. 51 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-21 03:58:40,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:58:40,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 493 proven. 172 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-21 03:58:40,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881749271] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 03:58:40,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 03:58:40,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-12-21 03:58:40,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373807603] [2023-12-21 03:58:40,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 03:58:40,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 03:58:40,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:58:40,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 03:58:40,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=341, Unknown=0, NotChecked=0, Total=600 [2023-12-21 03:58:40,723 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) [2023-12-21 03:58:40,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:58:40,860 INFO L93 Difference]: Finished difference Result 304 states and 423 transitions. [2023-12-21 03:58:40,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 03:58:40,860 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 [2023-12-21 03:58:40,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:58:40,861 INFO L225 Difference]: With dead ends: 304 [2023-12-21 03:58:40,861 INFO L226 Difference]: Without dead ends: 219 [2023-12-21 03:58:40,862 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 [2023-12-21 03:58:40,862 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 [2023-12-21 03:58:40,862 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] [2023-12-21 03:58:40,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-12-21 03:58:40,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2023-12-21 03:58:40,879 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) [2023-12-21 03:58:40,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 283 transitions. [2023-12-21 03:58:40,880 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 283 transitions. Word has length 121 [2023-12-21 03:58:40,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:58:40,880 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 283 transitions. [2023-12-21 03:58:40,880 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) [2023-12-21 03:58:40,880 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 283 transitions. [2023-12-21 03:58:40,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-21 03:58:40,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:58:40,887 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] [2023-12-21 03:58:40,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-21 03:58:41,100 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 [2023-12-21 03:58:41,102 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:58:41,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:58:41,103 INFO L85 PathProgramCache]: Analyzing trace with hash 855553271, now seen corresponding path program 6 times [2023-12-21 03:58:41,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:58:41,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188539438] [2023-12-21 03:58:41,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:58:41,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:58:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:58:41,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4937 backedges. 1855 proven. 287 refuted. 0 times theorem prover too weak. 2795 trivial. 0 not checked. [2023-12-21 03:58:41,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:58:41,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188539438] [2023-12-21 03:58:41,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188539438] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:58:41,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020324453] [2023-12-21 03:58:41,795 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 03:58:41,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:58:41,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:58:41,796 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) [2023-12-21 03:58:41,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 03:58:43,244 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-21 03:58:43,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 03:58:43,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 03:58:43,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:58:43,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4937 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4901 trivial. 0 not checked. [2023-12-21 03:58:43,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:58:43,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4937 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4901 trivial. 0 not checked. [2023-12-21 03:58:43,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020324453] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 03:58:43,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 03:58:43,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 9] total 32 [2023-12-21 03:58:43,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196341998] [2023-12-21 03:58:43,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 03:58:43,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-21 03:58:43,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:58:43,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-21 03:58:43,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=780, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 03:58:43,866 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) [2023-12-21 03:58:51,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:58:51,980 INFO L93 Difference]: Finished difference Result 1079 states and 1427 transitions. [2023-12-21 03:58:51,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2023-12-21 03:58:51,982 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 [2023-12-21 03:58:51,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:58:51,985 INFO L225 Difference]: With dead ends: 1079 [2023-12-21 03:58:51,986 INFO L226 Difference]: Without dead ends: 922 [2023-12-21 03:58:52,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26616 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=19974, Invalid=49458, Unknown=0, NotChecked=0, Total=69432 [2023-12-21 03:58:52,002 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 [2023-12-21 03:58:52,002 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] [2023-12-21 03:58:52,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2023-12-21 03:58:52,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 247. [2023-12-21 03:58:52,044 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) [2023-12-21 03:58:52,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 315 transitions. [2023-12-21 03:58:52,046 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 315 transitions. Word has length 217 [2023-12-21 03:58:52,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:58:52,046 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 315 transitions. [2023-12-21 03:58:52,046 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) [2023-12-21 03:58:52,046 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 315 transitions. [2023-12-21 03:58:52,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-21 03:58:52,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:58:52,048 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] [2023-12-21 03:58:52,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-21 03:58:52,249 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 [2023-12-21 03:58:52,250 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:58:52,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:58:52,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1628110019, now seen corresponding path program 7 times [2023-12-21 03:58:52,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:58:52,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127821058] [2023-12-21 03:58:52,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:58:52,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:58:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:58:52,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 2122 proven. 330 refuted. 0 times theorem prover too weak. 3351 trivial. 0 not checked. [2023-12-21 03:58:52,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:58:52,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127821058] [2023-12-21 03:58:52,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127821058] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:58:52,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901311675] [2023-12-21 03:58:52,939 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 03:58:52,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:58:52,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:58:52,940 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) [2023-12-21 03:58:52,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 03:58:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:58:53,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 1553 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 03:58:53,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:58:53,621 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 2122 proven. 330 refuted. 0 times theorem prover too weak. 3351 trivial. 0 not checked. [2023-12-21 03:58:53,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:58:53,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 2122 proven. 330 refuted. 0 times theorem prover too weak. 3351 trivial. 0 not checked. [2023-12-21 03:58:53,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901311675] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 03:58:53,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 03:58:53,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2023-12-21 03:58:53,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596547346] [2023-12-21 03:58:53,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 03:58:53,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-21 03:58:53,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:58:53,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-21 03:58:53,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=637, Invalid=923, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 03:58:53,855 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) [2023-12-21 03:58:54,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:58:54,037 INFO L93 Difference]: Finished difference Result 489 states and 647 transitions. [2023-12-21 03:58:54,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 03:58:54,038 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 [2023-12-21 03:58:54,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:58:54,039 INFO L225 Difference]: With dead ends: 489 [2023-12-21 03:58:54,039 INFO L226 Difference]: Without dead ends: 307 [2023-12-21 03:58:54,039 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 [2023-12-21 03:58:54,040 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 [2023-12-21 03:58:54,040 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] [2023-12-21 03:58:54,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-12-21 03:58:54,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2023-12-21 03:58:54,060 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) [2023-12-21 03:58:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 395 transitions. [2023-12-21 03:58:54,061 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 395 transitions. Word has length 245 [2023-12-21 03:58:54,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:58:54,061 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 395 transitions. [2023-12-21 03:58:54,061 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) [2023-12-21 03:58:54,061 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 395 transitions. [2023-12-21 03:58:54,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-21 03:58:54,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:58:54,063 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] [2023-12-21 03:58:54,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 03:58:54,271 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 [2023-12-21 03:58:54,271 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:58:54,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:58:54,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1561023321, now seen corresponding path program 8 times [2023-12-21 03:58:54,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:58:54,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793711436] [2023-12-21 03:58:54,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:58:54,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:58:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:58:54,839 INFO L134 CoverageAnalysis]: Checked inductivity of 10053 backedges. 0 proven. 7462 refuted. 0 times theorem prover too weak. 2591 trivial. 0 not checked. [2023-12-21 03:58:54,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:58:54,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793711436] [2023-12-21 03:58:54,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793711436] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:58:54,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187163547] [2023-12-21 03:58:54,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 03:58:54,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:58:54,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:58:54,841 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) [2023-12-21 03:58:54,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 03:58:55,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 03:58:55,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 03:58:55,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 1913 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 03:58:55,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:58:55,858 INFO L134 CoverageAnalysis]: Checked inductivity of 10053 backedges. 0 proven. 7462 refuted. 0 times theorem prover too weak. 2591 trivial. 0 not checked. [2023-12-21 03:58:55,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:58:56,125 INFO L134 CoverageAnalysis]: Checked inductivity of 10053 backedges. 0 proven. 7462 refuted. 0 times theorem prover too weak. 2591 trivial. 0 not checked. [2023-12-21 03:58:56,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187163547] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 03:58:56,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 03:58:56,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-12-21 03:58:56,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53570527] [2023-12-21 03:58:56,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 03:58:56,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 03:58:56,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:58:56,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 03:58:56,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=216, Unknown=0, NotChecked=0, Total=342 [2023-12-21 03:58:56,127 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) [2023-12-21 03:58:56,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:58:56,229 INFO L93 Difference]: Finished difference Result 427 states and 538 transitions. [2023-12-21 03:58:56,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 03:58:56,229 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 [2023-12-21 03:58:56,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:58:56,230 INFO L225 Difference]: With dead ends: 427 [2023-12-21 03:58:56,230 INFO L226 Difference]: Without dead ends: 391 [2023-12-21 03:58:56,231 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 [2023-12-21 03:58:56,231 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 [2023-12-21 03:58:56,231 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] [2023-12-21 03:58:56,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-21 03:58:56,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 370. [2023-12-21 03:58:56,263 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) [2023-12-21 03:58:56,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 479 transitions. [2023-12-21 03:58:56,264 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 479 transitions. Word has length 305 [2023-12-21 03:58:56,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:58:56,264 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 479 transitions. [2023-12-21 03:58:56,264 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) [2023-12-21 03:58:56,264 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 479 transitions. [2023-12-21 03:58:56,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2023-12-21 03:58:56,267 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:58:56,267 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] [2023-12-21 03:58:56,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 03:58:56,476 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 [2023-12-21 03:58:56,476 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:58:56,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:58:56,477 INFO L85 PathProgramCache]: Analyzing trace with hash 726149133, now seen corresponding path program 9 times [2023-12-21 03:58:56,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:58:56,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263947370] [2023-12-21 03:58:56,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:58:56,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:58:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:58:57,443 INFO L134 CoverageAnalysis]: Checked inductivity of 15616 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 15420 trivial. 0 not checked. [2023-12-21 03:58:57,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:58:57,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263947370] [2023-12-21 03:58:57,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263947370] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:58:57,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972955539] [2023-12-21 03:58:57,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 03:58:57,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:58:57,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:58:57,444 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) [2023-12-21 03:58:57,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 03:58:57,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-21 03:58:57,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 03:58:57,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-21 03:58:57,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:58:58,161 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 [2023-12-21 03:58:58,335 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 [2023-12-21 03:59:00,215 INFO L349 Elim1Store]: treesize reduction 86, result has 28.3 percent of original size [2023-12-21 03:59:00,216 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 [2023-12-21 03:59:00,338 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:59:00,339 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 [2023-12-21 03:59:00,347 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 [2023-12-21 03:59:00,400 INFO L134 CoverageAnalysis]: Checked inductivity of 15616 backedges. 524 proven. 4 refuted. 0 times theorem prover too weak. 15088 trivial. 0 not checked. [2023-12-21 03:59:00,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:59:08,800 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 [2023-12-21 03:59:08,850 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:59:08,851 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 [2023-12-21 03:59:36,451 INFO L134 CoverageAnalysis]: Checked inductivity of 15616 backedges. 501 proven. 351 refuted. 0 times theorem prover too weak. 14764 trivial. 0 not checked. [2023-12-21 03:59:36,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972955539] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 03:59:36,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 03:59:36,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 17] total 44 [2023-12-21 03:59:36,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162000723] [2023-12-21 03:59:36,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 03:59:36,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-21 03:59:36,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:59:36,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-21 03:59:36,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=1649, Unknown=3, NotChecked=0, Total=1980 [2023-12-21 03:59:36,454 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) [2023-12-21 03:59:39,726 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] [2023-12-21 03:59:41,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:59:48,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:59:52,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:59:53,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:59:54,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:59:55,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:59:59,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 04:00:01,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 04:00:09,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 04:00:10,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 04:00:12,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 04:00:20,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 04:00:22,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 04:00:25,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-12-21 04:00:26,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 04:00:27,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 04:00:28,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 04:00:33,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 04:00:37,171 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] [2023-12-21 04:00:37,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:00:37,278 INFO L93 Difference]: Finished difference Result 1127 states and 1451 transitions. [2023-12-21 04:00:37,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-12-21 04:00:37,278 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 [2023-12-21 04:00:37,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:00:37,280 INFO L225 Difference]: With dead ends: 1127 [2023-12-21 04:00:37,280 INFO L226 Difference]: Without dead ends: 781 [2023-12-21 04:00:37,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6849 ImplicationChecksByTransitivity, 32.4s TimeCoverageRelationStatistics Valid=4917, Invalid=13707, Unknown=8, NotChecked=0, Total=18632 [2023-12-21 04:00:37,283 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1216 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 164 mSolverCounterUnsat, 24 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 24 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.4s IncrementalHoareTripleChecker+Time [2023-12-21 04:00:37,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1216 Valid, 190 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 730 Invalid, 24 Unknown, 0 Unchecked, 38.4s Time] [2023-12-21 04:00:37,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2023-12-21 04:00:37,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 683. [2023-12-21 04:00:37,373 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) [2023-12-21 04:00:37,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 890 transitions. [2023-12-21 04:00:37,374 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 890 transitions. Word has length 368 [2023-12-21 04:00:37,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:00:37,374 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 890 transitions. [2023-12-21 04:00:37,375 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) [2023-12-21 04:00:37,375 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 890 transitions. [2023-12-21 04:00:37,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2023-12-21 04:00:37,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:00:37,377 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] [2023-12-21 04:00:37,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 04:00:37,584 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 [2023-12-21 04:00:37,584 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:00:37,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:00:37,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1515170543, now seen corresponding path program 1 times [2023-12-21 04:00:37,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:00:37,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028247049] [2023-12-21 04:00:37,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:00:37,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:00:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:00:38,672 INFO L134 CoverageAnalysis]: Checked inductivity of 15709 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 15420 trivial. 0 not checked. [2023-12-21 04:00:38,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:00:38,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028247049] [2023-12-21 04:00:38,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028247049] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:00:38,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982099353] [2023-12-21 04:00:38,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:00:38,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:00:38,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:00:38,674 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) [2023-12-21 04:00:38,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 04:00:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:00:39,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 2317 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 04:00:39,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:00:39,744 INFO L134 CoverageAnalysis]: Checked inductivity of 15709 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 15420 trivial. 0 not checked. [2023-12-21 04:00:39,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:00:40,244 INFO L134 CoverageAnalysis]: Checked inductivity of 15709 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 15420 trivial. 0 not checked. [2023-12-21 04:00:40,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982099353] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:00:40,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:00:40,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2023-12-21 04:00:40,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030770961] [2023-12-21 04:00:40,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:00:40,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-21 04:00:40,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:00:40,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-21 04:00:40,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=687, Invalid=1035, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 04:00:40,246 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) [2023-12-21 04:00:41,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:00:41,214 INFO L93 Difference]: Finished difference Result 2886 states and 3797 transitions. [2023-12-21 04:00:41,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 04:00:41,214 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 [2023-12-21 04:00:41,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:00:41,221 INFO L225 Difference]: With dead ends: 2886 [2023-12-21 04:00:41,221 INFO L226 Difference]: Without dead ends: 2880 [2023-12-21 04:00:41,221 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 [2023-12-21 04:00:41,222 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 [2023-12-21 04:00:41,222 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] [2023-12-21 04:00:41,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2023-12-21 04:00:41,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 689. [2023-12-21 04:00:41,329 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) [2023-12-21 04:00:41,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 896 transitions. [2023-12-21 04:00:41,330 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 896 transitions. Word has length 374 [2023-12-21 04:00:41,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:00:41,331 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 896 transitions. [2023-12-21 04:00:41,331 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) [2023-12-21 04:00:41,331 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 896 transitions. [2023-12-21 04:00:41,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2023-12-21 04:00:41,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:00:41,333 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] [2023-12-21 04:00:41,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 04:00:41,543 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 [2023-12-21 04:00:41,543 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:00:41,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:00:41,543 INFO L85 PathProgramCache]: Analyzing trace with hash 765685395, now seen corresponding path program 2 times [2023-12-21 04:00:41,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:00:41,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606446406] [2023-12-21 04:00:41,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:00:41,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:00:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:00:57,736 INFO L134 CoverageAnalysis]: Checked inductivity of 15820 backedges. 8010 proven. 97 refuted. 0 times theorem prover too weak. 7713 trivial. 0 not checked. [2023-12-21 04:00:57,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:00:57,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606446406] [2023-12-21 04:00:57,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606446406] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:00:57,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556287885] [2023-12-21 04:00:57,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:00:57,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:00:57,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:00:57,737 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) [2023-12-21 04:00:57,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 04:00:58,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:00:58,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:00:58,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 2359 conjuncts, 132 conjunts are in the unsatisfiable core [2023-12-21 04:00:58,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:01:06,843 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 [2023-12-21 04:01:08,044 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 04:01:08,044 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 [2023-12-21 04:01:08,048 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 04:01:08,048 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 [2023-12-21 04:01:08,081 INFO L134 CoverageAnalysis]: Checked inductivity of 15820 backedges. 4014 proven. 5814 refuted. 0 times theorem prover too weak. 5992 trivial. 0 not checked. [2023-12-21 04:01:08,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:01:08,494 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 [2023-12-21 04:01:08,514 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 04:01:08,515 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 [2023-12-21 04:01:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 15820 backedges. 200 proven. 5619 refuted. 0 times theorem prover too weak. 10001 trivial. 0 not checked. [2023-12-21 04:01:23,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556287885] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:01:23,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:01:23,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 33, 33] total 71 [2023-12-21 04:01:23,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300154287] [2023-12-21 04:01:23,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:01:23,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-12-21 04:01:23,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:01:23,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-12-21 04:01:23,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=4858, Unknown=0, NotChecked=0, Total=5112 [2023-12-21 04:01:23,867 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) [2023-12-21 04:01:33,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:01:33,565 INFO L93 Difference]: Finished difference Result 1344 states and 1755 transitions. [2023-12-21 04:01:33,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-21 04:01:33,566 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 [2023-12-21 04:01:33,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:01:33,585 INFO L225 Difference]: With dead ends: 1344 [2023-12-21 04:01:33,585 INFO L226 Difference]: Without dead ends: 975 [2023-12-21 04:01:33,587 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 [2023-12-21 04:01:33,587 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 82 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 6970 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s 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, 4.4s IncrementalHoareTripleChecker+Time [2023-12-21 04:01:33,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 2311 Invalid, 6970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6970 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-21 04:01:33,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2023-12-21 04:01:33,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 958. [2023-12-21 04:01:33,763 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) [2023-12-21 04:01:33,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1251 transitions. [2023-12-21 04:01:33,764 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1251 transitions. Word has length 380 [2023-12-21 04:01:33,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:01:33,764 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1251 transitions. [2023-12-21 04:01:33,765 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) [2023-12-21 04:01:33,765 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1251 transitions. [2023-12-21 04:01:33,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2023-12-21 04:01:33,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:01:33,767 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] [2023-12-21 04:01:33,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 04:01:33,967 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 [2023-12-21 04:01:33,967 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:01:33,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:01:33,968 INFO L85 PathProgramCache]: Analyzing trace with hash -855832041, now seen corresponding path program 3 times [2023-12-21 04:01:33,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:01:33,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003498322] [2023-12-21 04:01:33,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:01:33,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:02:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:02:57,018 INFO L134 CoverageAnalysis]: Checked inductivity of 15820 backedges. 3156 proven. 222 refuted. 0 times theorem prover too weak. 12442 trivial. 0 not checked. [2023-12-21 04:02:57,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:02:57,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003498322] [2023-12-21 04:02:57,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003498322] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:02:57,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926066119] [2023-12-21 04:02:57,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:02:57,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:02:57,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:02:57,020 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) [2023-12-21 04:02:57,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 04:02:57,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-12-21 04:02:57,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:02:57,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 72 conjunts are in the unsatisfiable core [2023-12-21 04:02:57,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:03:07,180 INFO L349 Elim1Store]: treesize reduction 41, result has 43.1 percent of original size [2023-12-21 04:03:07,180 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 [2023-12-21 04:03:07,829 INFO L349 Elim1Store]: treesize reduction 196, result has 45.9 percent of original size [2023-12-21 04:03:07,830 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 [2023-12-21 04:03:09,209 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 04:03:09,210 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 [2023-12-21 04:03:09,245 INFO L349 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2023-12-21 04:03:09,245 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 [2023-12-21 04:03:10,407 INFO L134 CoverageAnalysis]: Checked inductivity of 15820 backedges. 694 proven. 505 refuted. 0 times theorem prover too weak. 14621 trivial. 0 not checked. [2023-12-21 04:03:10,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:03:11,289 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 [2023-12-21 04:03:11,303 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 04:03:11,303 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 [2023-12-21 04:03:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 15820 backedges. 9 proven. 1301 refuted. 0 times theorem prover too weak. 14510 trivial. 0 not checked. [2023-12-21 04:03:25,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926066119] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:03:25,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:03:25,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 13, 16] total 67 [2023-12-21 04:03:25,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058617561] [2023-12-21 04:03:25,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:03:25,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-21 04:03:25,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:03:25,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-21 04:03:25,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=4350, Unknown=0, NotChecked=0, Total=4556 [2023-12-21 04:03:25,972 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) [2023-12-21 04:05:41,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:05:41,676 INFO L93 Difference]: Finished difference Result 4976 states and 6287 transitions. [2023-12-21 04:05:41,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 649 states. [2023-12-21 04:05:41,676 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 [2023-12-21 04:05:41,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:05:41,685 INFO L225 Difference]: With dead ends: 4976 [2023-12-21 04:05:41,685 INFO L226 Difference]: Without dead ends: 4021 [2023-12-21 04:05:41,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1448 GetRequests, 738 SyntacticMatches, 0 SemanticMatches, 710 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232600 ImplicationChecksByTransitivity, 135.0s TimeCoverageRelationStatistics Valid=53355, Invalid=452877, Unknown=0, NotChecked=0, Total=506232 [2023-12-21 04:05:41,712 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 1763 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 4406 mSolverCounterSat, 911 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s 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, 4.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:05:41,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1763 Valid, 955 Invalid, 5317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [911 Valid, 4406 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-21 04:05:41,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2023-12-21 04:05:42,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 1930. [2023-12-21 04:05:42,244 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) [2023-12-21 04:05:42,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2547 transitions. [2023-12-21 04:05:42,247 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2547 transitions. Word has length 380 [2023-12-21 04:05:42,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:05:42,247 INFO L495 AbstractCegarLoop]: Abstraction has 1930 states and 2547 transitions. [2023-12-21 04:05:42,247 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) [2023-12-21 04:05:42,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2547 transitions. [2023-12-21 04:05:42,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2023-12-21 04:05:42,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:05:42,252 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] [2023-12-21 04:05:42,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-21 04:05:42,459 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 [2023-12-21 04:05:42,459 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:05:42,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:05:42,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1087122661, now seen corresponding path program 4 times [2023-12-21 04:05:42,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:05:42,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605380982] [2023-12-21 04:05:42,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:05:42,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:05:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:06:03,063 INFO L134 CoverageAnalysis]: Checked inductivity of 15820 backedges. 5274 proven. 729 refuted. 0 times theorem prover too weak. 9817 trivial. 0 not checked. [2023-12-21 04:06:03,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:06:03,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605380982] [2023-12-21 04:06:03,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605380982] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:06:03,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832212483] [2023-12-21 04:06:03,064 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:06:03,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:06:03,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:06:03,065 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) [2023-12-21 04:06:03,065 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... [2023-12-21 04:12:13,371 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 [2023-12-21 04:12:13,371 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 [2023-12-21 04:12:14,572 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forcibly destroying the process [2023-12-21 04:12:14,572 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 [2023-12-21 04:12:14,610 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 [2023-12-21 04:12:14,616 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 04:12:14,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 04:12:14,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 137 [2023-12-21 04:12:14,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2023-12-21 04:12:14,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064257385] [2023-12-21 04:12:14,616 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 04:12:14,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-21 04:12:14,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:12:14,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-21 04:12:14,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1316, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 04:12:14,618 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) [2023-12-21 04:12:14,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 04:12:14,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=90, Invalid=1316, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 04:12:14,621 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 [2023-12-21 04:12:14,621 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] [2023-12-21 04:12:14,622 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 04:12:14,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 04:12:14,623 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). [2023-12-21 04:12:14,626 INFO L445 BasicCegarLoop]: Path program histogram: [9, 4, 2, 1, 1, 1, 1, 1] [2023-12-21 04:12:14,628 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 04:12:14,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 04:12:14 BoogieIcfgContainer [2023-12-21 04:12:14,629 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 04:12:14,629 INFO L158 Benchmark]: Toolchain (without parser) took 830507.61ms. Allocated memory was 216.0MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 150.2MB in the beginning and 677.5MB in the end (delta: -527.3MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-21 04:12:14,629 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 216.0MB. Free memory is still 163.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 04:12:14,629 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.19ms. Allocated memory is still 216.0MB. Free memory was 149.9MB in the beginning and 137.9MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 04:12:14,629 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.40ms. Allocated memory is still 216.0MB. Free memory was 137.8MB in the beginning and 135.5MB in the end (delta: 2.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-21 04:12:14,630 INFO L158 Benchmark]: Boogie Preprocessor took 38.09ms. Allocated memory is still 216.0MB. Free memory was 135.5MB in the beginning and 132.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 04:12:14,630 INFO L158 Benchmark]: RCFGBuilder took 417.31ms. Allocated memory was 216.0MB in the beginning and 282.1MB in the end (delta: 66.1MB). Free memory was 132.7MB in the beginning and 236.1MB in the end (delta: -103.4MB). Peak memory consumption was 10.2MB. Max. memory is 8.0GB. [2023-12-21 04:12:14,630 INFO L158 Benchmark]: TraceAbstraction took 829823.19ms. Allocated memory was 282.1MB in the beginning and 2.0GB in the end (delta: 1.7GB). Free memory was 235.6MB in the beginning and 677.5MB in the end (delta: -441.9MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-21 04:12:14,631 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 216.0MB. Free memory is still 163.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 188.19ms. Allocated memory is still 216.0MB. Free memory was 149.9MB in the beginning and 137.9MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.40ms. Allocated memory is still 216.0MB. Free memory was 137.8MB in the beginning and 135.5MB in the end (delta: 2.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.09ms. Allocated memory is still 216.0MB. Free memory was 135.5MB in the beginning and 132.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 417.31ms. Allocated memory was 216.0MB in the beginning and 282.1MB in the end (delta: 66.1MB). Free memory was 132.7MB in the beginning and 236.1MB in the end (delta: -103.4MB). Peak memory consumption was 10.2MB. Max. memory is 8.0GB. * TraceAbstraction took 829823.19ms. Allocated memory was 282.1MB in the beginning and 2.0GB in the end (delta: 1.7GB). Free memory was 235.6MB in the beginning and 677.5MB in the end (delta: -441.9MB). Peak memory consumption was 1.3GB. 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: 829.8s, OverallIterations: 20, TraceHistogramMax: 100, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 217.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 mSolverCounterUnknown, 9943 SdHoareTripleChecker+Valid, 48.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9943 mSDsluCounter, 4425 SdHoareTripleChecker+Invalid, 47.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4109 mSDsCounter, 1763 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13882 IncrementalHoareTripleChecker+Invalid, 15669 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1763 mSolverCounterUnsat, 316 mSDtfsCounter, 13882 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6589 GetRequests, 5003 SyntacticMatches, 32 SemanticMatches, 1554 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274700 ImplicationChecksByTransitivity, 187.9s 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: 1.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 5282 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 105.4s SatisfiabilityAnalysisTime, 128.6s 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