/usr/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 -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 18:13:00,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 18:13:00,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 18:13:00,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 18:13:00,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 18:13:00,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 18:13:00,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 18:13:00,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 18:13:00,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 18:13:00,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 18:13:00,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 18:13:00,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 18:13:00,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 18:13:00,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 18:13:00,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 18:13:00,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 18:13:00,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 18:13:00,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 18:13:00,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 18:13:00,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 18:13:00,251 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 18:13:00,272 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 18:13:00,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 18:13:00,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 18:13:00,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 18:13:00,274 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 18:13:00,274 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 18:13:00,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 18:13:00,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 18:13:00,274 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 18:13:00,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 18:13:00,275 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 18:13:00,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 18:13:00,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 18:13:00,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 18:13:00,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 18:13:00,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 18:13:00,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 18:13:00,276 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 18:13:00,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 18:13:00,276 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 18:13:00,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 18:13:00,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 18:13:00,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 18:13:00,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 18:13:00,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 18:13:00,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 18:13:00,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 18:13:00,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 18:13:00,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 18:13:00,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 18:13:00,277 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 18:13:00,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 18:13:00,277 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 18:13:00,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 18:13:00,278 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 18:13:00,278 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 18:13:00,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 18:13:00,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 18:13:00,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 18:13:00,474 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 18:13:00,474 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 18:13:00,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i [2023-04-01 18:13:01,405 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 18:13:01,592 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 18:13:01,592 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i [2023-04-01 18:13:01,595 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26d74b311/90aab365db4c4ff28c244782bd3bd0ed/FLAG049e55324 [2023-04-01 18:13:01,604 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26d74b311/90aab365db4c4ff28c244782bd3bd0ed [2023-04-01 18:13:01,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 18:13:01,606 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 18:13:01,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 18:13:01,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 18:13:01,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 18:13:01,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:13:01" (1/1) ... [2023-04-01 18:13:01,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e087371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:13:01, skipping insertion in model container [2023-04-01 18:13:01,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:13:01" (1/1) ... [2023-04-01 18:13:01,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 18:13:01,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 18:13:01,729 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i[820,833] [2023-04-01 18:13:01,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 18:13:01,752 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 18:13:01,761 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i[820,833] [2023-04-01 18:13:01,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 18:13:01,779 INFO L208 MainTranslator]: Completed translation [2023-04-01 18:13:01,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:13:01 WrapperNode [2023-04-01 18:13:01,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 18:13:01,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 18:13:01,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 18:13:01,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 18:13:01,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:13:01" (1/1) ... [2023-04-01 18:13:01,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:13:01" (1/1) ... [2023-04-01 18:13:01,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:13:01" (1/1) ... [2023-04-01 18:13:01,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:13:01" (1/1) ... [2023-04-01 18:13:01,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:13:01" (1/1) ... [2023-04-01 18:13:01,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:13:01" (1/1) ... [2023-04-01 18:13:01,806 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:13:01" (1/1) ... [2023-04-01 18:13:01,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:13:01" (1/1) ... [2023-04-01 18:13:01,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 18:13:01,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 18:13:01,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 18:13:01,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 18:13:01,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:13:01" (1/1) ... [2023-04-01 18:13:01,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 18:13:01,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:13:01,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 18:13:01,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 18:13:01,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 18:13:01,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 18:13:01,861 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 18:13:01,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 18:13:01,862 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 18:13:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 18:13:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 18:13:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 18:13:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 18:13:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 18:13:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 18:13:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 18:13:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 18:13:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 18:13:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 18:13:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 18:13:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 18:13:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 18:13:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 18:13:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 18:13:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 18:13:01,917 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 18:13:01,918 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 18:13:02,027 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 18:13:02,030 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 18:13:02,030 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 18:13:02,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:13:02 BoogieIcfgContainer [2023-04-01 18:13:02,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 18:13:02,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 18:13:02,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 18:13:02,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 18:13:02,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:13:01" (1/3) ... [2023-04-01 18:13:02,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2946ec8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:13:02, skipping insertion in model container [2023-04-01 18:13:02,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:13:01" (2/3) ... [2023-04-01 18:13:02,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2946ec8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:13:02, skipping insertion in model container [2023-04-01 18:13:02,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:13:02" (3/3) ... [2023-04-01 18:13:02,041 INFO L112 eAbstractionObserver]: Analyzing ICFG sorting_bubblesort_ground-1.i [2023-04-01 18:13:02,054 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 18:13:02,054 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 18:13:02,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 18:13:02,114 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=LoopsAndPotentialCycles, 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;@4cc81ff3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 18:13:02,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 18:13:02,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 18:13:02,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-04-01 18:13:02,128 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:13:02,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:13:02,129 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:13:02,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:13:02,135 INFO L85 PathProgramCache]: Analyzing trace with hash 498599300, now seen corresponding path program 1 times [2023-04-01 18:13:02,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:13:02,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996966774] [2023-04-01 18:13:02,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:13:02,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:13:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:02,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:13:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:02,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 18:13:02,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:13:02,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996966774] [2023-04-01 18:13:02,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996966774] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 18:13:02,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 18:13:02,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 18:13:02,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908338741] [2023-04-01 18:13:02,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 18:13:02,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 18:13:02,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:13:02,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 18:13:02,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 18:13:02,344 INFO L87 Difference]: Start difference. First operand has 31 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:13:02,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:13:02,422 INFO L93 Difference]: Finished difference Result 54 states and 75 transitions. [2023-04-01 18:13:02,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 18:13:02,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-04-01 18:13:02,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:13:02,432 INFO L225 Difference]: With dead ends: 54 [2023-04-01 18:13:02,432 INFO L226 Difference]: Without dead ends: 26 [2023-04-01 18:13:02,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 18:13:02,438 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 28 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 18:13:02,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 10 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 18:13:02,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-04-01 18:13:02,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-04-01 18:13:02,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 18:13:02,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2023-04-01 18:13:02,459 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 16 [2023-04-01 18:13:02,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:13:02,459 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2023-04-01 18:13:02,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:13:02,460 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2023-04-01 18:13:02,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-04-01 18:13:02,460 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:13:02,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:13:02,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 18:13:02,461 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:13:02,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:13:02,461 INFO L85 PathProgramCache]: Analyzing trace with hash 247748289, now seen corresponding path program 1 times [2023-04-01 18:13:02,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:13:02,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484235095] [2023-04-01 18:13:02,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:13:02,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:13:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:02,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:13:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:02,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 18:13:02,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:13:02,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484235095] [2023-04-01 18:13:02,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484235095] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 18:13:02,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 18:13:02,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 18:13:02,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941539522] [2023-04-01 18:13:02,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 18:13:02,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 18:13:02,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:13:02,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 18:13:02,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 18:13:02,512 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:13:02,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:13:02,556 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2023-04-01 18:13:02,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 18:13:02,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-04-01 18:13:02,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:13:02,557 INFO L225 Difference]: With dead ends: 46 [2023-04-01 18:13:02,557 INFO L226 Difference]: Without dead ends: 28 [2023-04-01 18:13:02,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 18:13:02,559 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 28 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 18:13:02,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 12 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 18:13:02,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-04-01 18:13:02,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2023-04-01 18:13:02,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 18:13:02,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2023-04-01 18:13:02,564 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 16 [2023-04-01 18:13:02,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:13:02,564 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2023-04-01 18:13:02,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:13:02,564 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2023-04-01 18:13:02,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-01 18:13:02,565 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:13:02,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:13:02,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 18:13:02,565 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:13:02,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:13:02,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1572069859, now seen corresponding path program 1 times [2023-04-01 18:13:02,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:13:02,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120164092] [2023-04-01 18:13:02,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:13:02,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:13:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:02,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:13:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:02,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 18:13:02,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:13:02,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120164092] [2023-04-01 18:13:02,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120164092] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:13:02,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44868101] [2023-04-01 18:13:02,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:13:02,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:13:02,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:13:02,619 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) [2023-04-01 18:13:02,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 18:13:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:02,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-01 18:13:02,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 18:13:02,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 18:13:02,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 18:13:02,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44868101] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 18:13:02,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 18:13:02,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 18:13:02,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615587004] [2023-04-01 18:13:02,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 18:13:02,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 18:13:02,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:13:02,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 18:13:02,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 18:13:02,798 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:13:02,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:13:02,809 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2023-04-01 18:13:02,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 18:13:02,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-04-01 18:13:02,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:13:02,811 INFO L225 Difference]: With dead ends: 44 [2023-04-01 18:13:02,811 INFO L226 Difference]: Without dead ends: 31 [2023-04-01 18:13:02,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 18:13:02,812 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 18:13:02,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 61 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 18:13:02,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-04-01 18:13:02,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-04-01 18:13:02,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 18:13:02,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-04-01 18:13:02,816 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 18 [2023-04-01 18:13:02,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:13:02,817 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-04-01 18:13:02,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:13:02,817 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-04-01 18:13:02,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-04-01 18:13:02,817 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:13:02,817 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] [2023-04-01 18:13:02,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 18:13:03,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:13:03,021 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:13:03,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:13:03,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1883512810, now seen corresponding path program 1 times [2023-04-01 18:13:03,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:13:03,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415045565] [2023-04-01 18:13:03,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:13:03,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:13:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:03,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:13:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:03,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 18:13:03,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:13:03,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415045565] [2023-04-01 18:13:03,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415045565] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:13:03,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138920951] [2023-04-01 18:13:03,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:13:03,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:13:03,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:13:03,126 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) [2023-04-01 18:13:03,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 18:13:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:03,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-01 18:13:03,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 18:13:03,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 18:13:03,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 18:13:03,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138920951] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 18:13:03,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 18:13:03,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 18:13:03,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456741373] [2023-04-01 18:13:03,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 18:13:03,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 18:13:03,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:13:03,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 18:13:03,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 18:13:03,189 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:13:03,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:13:03,209 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2023-04-01 18:13:03,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 18:13:03,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-04-01 18:13:03,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:13:03,210 INFO L225 Difference]: With dead ends: 56 [2023-04-01 18:13:03,210 INFO L226 Difference]: Without dead ends: 35 [2023-04-01 18:13:03,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 18:13:03,211 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 3 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 18:13:03,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 54 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 18:13:03,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-04-01 18:13:03,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2023-04-01 18:13:03,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 18:13:03,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2023-04-01 18:13:03,215 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 20 [2023-04-01 18:13:03,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:13:03,215 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2023-04-01 18:13:03,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:13:03,215 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2023-04-01 18:13:03,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-04-01 18:13:03,216 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:13:03,216 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, 1, 1] [2023-04-01 18:13:03,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 18:13:03,421 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,SelfDestructingSolverStorable3 [2023-04-01 18:13:03,422 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:13:03,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:13:03,422 INFO L85 PathProgramCache]: Analyzing trace with hash -45337753, now seen corresponding path program 1 times [2023-04-01 18:13:03,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:13:03,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632538322] [2023-04-01 18:13:03,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:13:03,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:13:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:03,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:13:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 18:13:03,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:13:03,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632538322] [2023-04-01 18:13:03,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632538322] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:13:03,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40484883] [2023-04-01 18:13:03,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:13:03,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:13:03,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:13:03,503 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) [2023-04-01 18:13:03,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 18:13:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:03,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 18:13:03,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 18:13:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 18:13:03,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 18:13:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 18:13:03,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40484883] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 18:13:03,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 18:13:03,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-04-01 18:13:03,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168769544] [2023-04-01 18:13:03,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 18:13:03,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 18:13:03,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:13:03,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 18:13:03,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-04-01 18:13:03,583 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:13:03,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:13:03,646 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2023-04-01 18:13:03,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 18:13:03,646 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-04-01 18:13:03,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:13:03,646 INFO L225 Difference]: With dead ends: 61 [2023-04-01 18:13:03,646 INFO L226 Difference]: Without dead ends: 38 [2023-04-01 18:13:03,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-04-01 18:13:03,647 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 34 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 18:13:03,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 12 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 18:13:03,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-04-01 18:13:03,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-04-01 18:13:03,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 18:13:03,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2023-04-01 18:13:03,652 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 23 [2023-04-01 18:13:03,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:13:03,652 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2023-04-01 18:13:03,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:13:03,652 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2023-04-01 18:13:03,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-04-01 18:13:03,653 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:13:03,653 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:13:03,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 18:13:03,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:13:03,857 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:13:03,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:13:03,858 INFO L85 PathProgramCache]: Analyzing trace with hash 317957313, now seen corresponding path program 2 times [2023-04-01 18:13:03,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:13:03,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111442608] [2023-04-01 18:13:03,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:13:03,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:13:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:03,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:13:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 18:13:03,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:13:03,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111442608] [2023-04-01 18:13:03,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111442608] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:13:03,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404858375] [2023-04-01 18:13:03,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-01 18:13:03,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:13:03,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:13:03,948 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) [2023-04-01 18:13:03,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 18:13:03,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-01 18:13:03,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 18:13:03,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 18:13:03,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 18:13:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 18:13:04,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 18:13:04,105 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 18:13:04,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404858375] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 18:13:04,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 18:13:04,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2023-04-01 18:13:04,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147176273] [2023-04-01 18:13:04,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 18:13:04,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 18:13:04,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:13:04,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 18:13:04,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2023-04-01 18:13:04,107 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:13:04,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:13:04,322 INFO L93 Difference]: Finished difference Result 82 states and 106 transitions. [2023-04-01 18:13:04,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 18:13:04,323 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2023-04-01 18:13:04,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:13:04,326 INFO L225 Difference]: With dead ends: 82 [2023-04-01 18:13:04,327 INFO L226 Difference]: Without dead ends: 59 [2023-04-01 18:13:04,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=489, Unknown=0, NotChecked=0, Total=702 [2023-04-01 18:13:04,328 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 59 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 18:13:04,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 27 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 18:13:04,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-04-01 18:13:04,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2023-04-01 18:13:04,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 49 states have (on average 1.183673469387755) internal successors, (58), 49 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 18:13:04,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2023-04-01 18:13:04,335 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 29 [2023-04-01 18:13:04,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:13:04,335 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2023-04-01 18:13:04,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:13:04,342 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2023-04-01 18:13:04,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-04-01 18:13:04,342 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:13:04,342 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:13:04,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-01 18:13:04,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:13:04,543 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:13:04,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:13:04,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1061801596, now seen corresponding path program 3 times [2023-04-01 18:13:04,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:13:04,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616026972] [2023-04-01 18:13:04,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:13:04,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:13:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:04,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:13:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:04,672 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-04-01 18:13:04,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:13:04,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616026972] [2023-04-01 18:13:04,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616026972] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:13:04,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026721354] [2023-04-01 18:13:04,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 18:13:04,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:13:04,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:13:04,675 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) [2023-04-01 18:13:04,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 18:13:04,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-04-01 18:13:04,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 18:13:04,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 18:13:04,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 18:13:04,760 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-04-01 18:13:04,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 18:13:04,821 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-04-01 18:13:04,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026721354] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 18:13:04,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 18:13:04,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2023-04-01 18:13:04,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096939134] [2023-04-01 18:13:04,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 18:13:04,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 18:13:04,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:13:04,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 18:13:04,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-04-01 18:13:04,823 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:13:04,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:13:04,939 INFO L93 Difference]: Finished difference Result 106 states and 137 transitions. [2023-04-01 18:13:04,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 18:13:04,940 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2023-04-01 18:13:04,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:13:04,940 INFO L225 Difference]: With dead ends: 106 [2023-04-01 18:13:04,940 INFO L226 Difference]: Without dead ends: 79 [2023-04-01 18:13:04,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2023-04-01 18:13:04,941 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 62 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 18:13:04,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 22 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 18:13:04,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-04-01 18:13:04,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-04-01 18:13:04,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 73 states have (on average 1.2328767123287672) internal successors, (90), 73 states have internal predecessors, (90), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 18:13:04,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 95 transitions. [2023-04-01 18:13:04,949 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 95 transitions. Word has length 44 [2023-04-01 18:13:04,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:13:04,949 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 95 transitions. [2023-04-01 18:13:04,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:13:04,950 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 95 transitions. [2023-04-01 18:13:04,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-01 18:13:04,950 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:13:04,951 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:13:04,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 18:13:05,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:13:05,155 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:13:05,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:13:05,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1776075068, now seen corresponding path program 4 times [2023-04-01 18:13:05,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:13:05,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510779672] [2023-04-01 18:13:05,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:13:05,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:13:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:05,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:13:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-04-01 18:13:05,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:13:05,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510779672] [2023-04-01 18:13:05,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510779672] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:13:05,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372948182] [2023-04-01 18:13:05,347 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-01 18:13:05,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:13:05,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:13:05,348 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) [2023-04-01 18:13:05,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 18:13:05,409 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-01 18:13:05,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 18:13:05,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 18:13:05,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 18:13:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-04-01 18:13:05,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 18:13:05,608 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-04-01 18:13:05,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372948182] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 18:13:05,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 18:13:05,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 26 [2023-04-01 18:13:05,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209340243] [2023-04-01 18:13:05,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 18:13:05,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-04-01 18:13:05,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:13:05,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-04-01 18:13:05,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2023-04-01 18:13:05,610 INFO L87 Difference]: Start difference. First operand 79 states and 95 transitions. Second operand has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:13:05,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:13:05,942 INFO L93 Difference]: Finished difference Result 155 states and 198 transitions. [2023-04-01 18:13:05,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-01 18:13:05,942 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2023-04-01 18:13:05,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:13:05,943 INFO L225 Difference]: With dead ends: 155 [2023-04-01 18:13:05,943 INFO L226 Difference]: Without dead ends: 103 [2023-04-01 18:13:05,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=853, Invalid=1403, Unknown=0, NotChecked=0, Total=2256 [2023-04-01 18:13:05,944 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 70 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 18:13:05,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 27 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 18:13:05,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-04-01 18:13:05,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-04-01 18:13:05,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 97 states have (on average 1.175257731958763) internal successors, (114), 97 states have internal predecessors, (114), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 18:13:05,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2023-04-01 18:13:05,962 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 56 [2023-04-01 18:13:05,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:13:05,962 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2023-04-01 18:13:05,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:13:05,963 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2023-04-01 18:13:05,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-01 18:13:05,964 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:13:05,964 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:13:05,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 18:13:06,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:13:06,171 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:13:06,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:13:06,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1286319572, now seen corresponding path program 5 times [2023-04-01 18:13:06,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:13:06,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461251779] [2023-04-01 18:13:06,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:13:06,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:13:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:06,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:13:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-04-01 18:13:06,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:13:06,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461251779] [2023-04-01 18:13:06,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461251779] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:13:06,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357644137] [2023-04-01 18:13:06,576 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-04-01 18:13:06,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:13:06,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:13:06,577 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) [2023-04-01 18:13:06,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 18:13:06,832 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2023-04-01 18:13:06,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 18:13:06,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 18:13:06,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 18:13:06,961 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-04-01 18:13:06,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 18:13:07,088 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-04-01 18:13:07,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357644137] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 18:13:07,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 18:13:07,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 9, 9] total 40 [2023-04-01 18:13:07,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160335454] [2023-04-01 18:13:07,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 18:13:07,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-04-01 18:13:07,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:13:07,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-04-01 18:13:07,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=1139, Unknown=0, NotChecked=0, Total=1560 [2023-04-01 18:13:07,090 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 40 states, 40 states have (on average 2.675) internal successors, (107), 39 states have internal predecessors, (107), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:13:07,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:13:07,770 INFO L93 Difference]: Finished difference Result 206 states and 270 transitions. [2023-04-01 18:13:07,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-04-01 18:13:07,770 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.675) internal successors, (107), 39 states have internal predecessors, (107), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 80 [2023-04-01 18:13:07,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:13:07,771 INFO L225 Difference]: With dead ends: 206 [2023-04-01 18:13:07,771 INFO L226 Difference]: Without dead ends: 154 [2023-04-01 18:13:07,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1149 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1257, Invalid=4595, Unknown=0, NotChecked=0, Total=5852 [2023-04-01 18:13:07,773 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 153 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 18:13:07,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 47 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 18:13:07,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-04-01 18:13:07,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2023-04-01 18:13:07,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 147 states have (on average 1.2244897959183674) internal successors, (180), 147 states have internal predecessors, (180), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 18:13:07,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 185 transitions. [2023-04-01 18:13:07,783 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 185 transitions. Word has length 80 [2023-04-01 18:13:07,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:13:07,783 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 185 transitions. [2023-04-01 18:13:07,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.675) internal successors, (107), 39 states have internal predecessors, (107), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:13:07,783 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 185 transitions. [2023-04-01 18:13:07,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-04-01 18:13:07,784 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:13:07,784 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:13:07,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 18:13:07,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:13:07,990 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:13:07,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:13:07,991 INFO L85 PathProgramCache]: Analyzing trace with hash 718774390, now seen corresponding path program 6 times [2023-04-01 18:13:07,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:13:07,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596031800] [2023-04-01 18:13:07,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:13:07,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:13:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:08,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:13:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:08,445 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-04-01 18:13:08,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:13:08,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596031800] [2023-04-01 18:13:08,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596031800] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:13:08,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963769542] [2023-04-01 18:13:08,446 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-04-01 18:13:08,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:13:08,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:13:08,447 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) [2023-04-01 18:13:08,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 18:13:08,549 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-04-01 18:13:08,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 18:13:08,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2023-04-01 18:13:08,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 18:13:08,884 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 18:13:08,884 INFO L350 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 26 treesize of output 10 [2023-04-01 18:13:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2023-04-01 18:13:08,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 18:13:09,132 INFO L321 Elim1Store]: treesize reduction 13, result has 60.6 percent of original size [2023-04-01 18:13:09,132 INFO L350 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 36 treesize of output 28 [2023-04-01 18:13:09,181 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2023-04-01 18:13:09,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963769542] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 18:13:09,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 18:13:09,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 12, 10] total 44 [2023-04-01 18:13:09,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290236274] [2023-04-01 18:13:09,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 18:13:09,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-04-01 18:13:09,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:13:09,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-04-01 18:13:09,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=1508, Unknown=0, NotChecked=0, Total=1892 [2023-04-01 18:13:09,183 INFO L87 Difference]: Start difference. First operand 153 states and 185 transitions. Second operand has 44 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 41 states have internal predecessors, (100), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:13:10,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:13:10,072 INFO L93 Difference]: Finished difference Result 272 states and 341 transitions. [2023-04-01 18:13:10,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-04-01 18:13:10,072 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 41 states have internal predecessors, (100), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106 [2023-04-01 18:13:10,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:13:10,074 INFO L225 Difference]: With dead ends: 272 [2023-04-01 18:13:10,074 INFO L226 Difference]: Without dead ends: 172 [2023-04-01 18:13:10,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1252 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1211, Invalid=5431, Unknown=0, NotChecked=0, Total=6642 [2023-04-01 18:13:10,076 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 155 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 18:13:10,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 72 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 18:13:10,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-04-01 18:13:10,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 162. [2023-04-01 18:13:10,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 154 states have (on average 1.2142857142857142) internal successors, (187), 155 states have internal predecessors, (187), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 18:13:10,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 194 transitions. [2023-04-01 18:13:10,087 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 194 transitions. Word has length 106 [2023-04-01 18:13:10,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:13:10,087 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 194 transitions. [2023-04-01 18:13:10,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 41 states have internal predecessors, (100), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 18:13:10,087 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 194 transitions. [2023-04-01 18:13:10,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-01 18:13:10,088 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:13:10,088 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:13:10,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-01 18:13:10,292 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,SelfDestructingSolverStorable9 [2023-04-01 18:13:10,293 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:13:10,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:13:10,293 INFO L85 PathProgramCache]: Analyzing trace with hash -132856466, now seen corresponding path program 1 times [2023-04-01 18:13:10,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:13:10,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88185928] [2023-04-01 18:13:10,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:13:10,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:13:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:10,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:13:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:10,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-01 18:13:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:10,775 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 2 proven. 576 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-04-01 18:13:10,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:13:10,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88185928] [2023-04-01 18:13:10,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88185928] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:13:10,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788689374] [2023-04-01 18:13:10,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:13:10,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:13:10,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:13:10,789 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) [2023-04-01 18:13:10,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 18:13:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:10,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 26 conjunts are in the unsatisfiable core [2023-04-01 18:13:10,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 18:13:10,957 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-04-01 18:13:10,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 18:13:11,640 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 2 proven. 576 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-04-01 18:13:11,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788689374] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 18:13:11,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 18:13:11,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 54 [2023-04-01 18:13:11,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845458884] [2023-04-01 18:13:11,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 18:13:11,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-04-01 18:13:11,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:13:11,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-04-01 18:13:11,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2023-04-01 18:13:11,643 INFO L87 Difference]: Start difference. First operand 162 states and 194 transitions. Second operand has 54 states, 54 states have (on average 2.3333333333333335) internal successors, (126), 53 states have internal predecessors, (126), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 18:13:12,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:13:12,708 INFO L93 Difference]: Finished difference Result 321 states and 410 transitions. [2023-04-01 18:13:12,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-04-01 18:13:12,709 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.3333333333333335) internal successors, (126), 53 states have internal predecessors, (126), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 116 [2023-04-01 18:13:12,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:13:12,711 INFO L225 Difference]: With dead ends: 321 [2023-04-01 18:13:12,711 INFO L226 Difference]: Without dead ends: 214 [2023-04-01 18:13:12,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1669 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4031, Invalid=6681, Unknown=0, NotChecked=0, Total=10712 [2023-04-01 18:13:12,715 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 126 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 18:13:12,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 37 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 18:13:12,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-04-01 18:13:12,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2023-04-01 18:13:12,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 206 states have (on average 1.1601941747572815) internal successors, (239), 207 states have internal predecessors, (239), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 18:13:12,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 246 transitions. [2023-04-01 18:13:12,730 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 246 transitions. Word has length 116 [2023-04-01 18:13:12,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:13:12,730 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 246 transitions. [2023-04-01 18:13:12,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.3333333333333335) internal successors, (126), 53 states have internal predecessors, (126), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 18:13:12,730 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 246 transitions. [2023-04-01 18:13:12,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-04-01 18:13:12,734 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:13:12,734 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:13:12,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 18:13:12,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:13:12,939 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:13:12,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:13:12,940 INFO L85 PathProgramCache]: Analyzing trace with hash 81459810, now seen corresponding path program 2 times [2023-04-01 18:13:12,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:13:12,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585340932] [2023-04-01 18:13:12,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:13:12,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:13:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:14,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:13:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:14,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 18:13:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:14,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2792 backedges. 2 proven. 2500 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-04-01 18:13:14,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:13:14,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585340932] [2023-04-01 18:13:14,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585340932] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:13:14,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407877077] [2023-04-01 18:13:14,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-01 18:13:14,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:13:14,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:13:14,511 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) [2023-04-01 18:13:14,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 18:13:14,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-01 18:13:14,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 18:13:14,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 52 conjunts are in the unsatisfiable core [2023-04-01 18:13:14,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 18:13:14,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2792 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-04-01 18:13:14,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 18:13:17,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2792 backedges. 2 proven. 2500 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-04-01 18:13:17,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407877077] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 18:13:17,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 18:13:17,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53, 53] total 106 [2023-04-01 18:13:17,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244458423] [2023-04-01 18:13:17,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 18:13:17,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2023-04-01 18:13:17,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:13:17,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2023-04-01 18:13:17,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2023-04-01 18:13:17,027 INFO L87 Difference]: Start difference. First operand 214 states and 246 transitions. Second operand has 106 states, 106 states have (on average 2.169811320754717) internal successors, (230), 105 states have internal predecessors, (230), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 18:13:20,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:13:20,184 INFO L93 Difference]: Finished difference Result 425 states and 540 transitions. [2023-04-01 18:13:20,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2023-04-01 18:13:20,185 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.169811320754717) internal successors, (230), 105 states have internal predecessors, (230), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 168 [2023-04-01 18:13:20,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:13:20,186 INFO L225 Difference]: With dead ends: 425 [2023-04-01 18:13:20,186 INFO L226 Difference]: Without dead ends: 318 [2023-04-01 18:13:20,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6726 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=16173, Invalid=26883, Unknown=0, NotChecked=0, Total=43056 [2023-04-01 18:13:20,193 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 230 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 18:13:20,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 57 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 18:13:20,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-04-01 18:13:20,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2023-04-01 18:13:20,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 310 states have (on average 1.1064516129032258) internal successors, (343), 311 states have internal predecessors, (343), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 18:13:20,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 350 transitions. [2023-04-01 18:13:20,219 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 350 transitions. Word has length 168 [2023-04-01 18:13:20,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:13:20,220 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 350 transitions. [2023-04-01 18:13:20,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 2.169811320754717) internal successors, (230), 105 states have internal predecessors, (230), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 18:13:20,220 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 350 transitions. [2023-04-01 18:13:20,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-04-01 18:13:20,222 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:13:20,222 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:13:20,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 18:13:20,427 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,SelfDestructingSolverStorable11 [2023-04-01 18:13:20,427 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:13:20,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:13:20,428 INFO L85 PathProgramCache]: Analyzing trace with hash -339087798, now seen corresponding path program 3 times [2023-04-01 18:13:20,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:13:20,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780847420] [2023-04-01 18:13:20,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:13:20,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:13:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:25,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:13:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:25,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-04-01 18:13:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:13:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 10696 backedges. 2 proven. 10404 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-04-01 18:13:25,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:13:25,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780847420] [2023-04-01 18:13:25,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780847420] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:13:25,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178839773] [2023-04-01 18:13:25,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 18:13:25,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:13:25,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:13:25,758 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) [2023-04-01 18:13:25,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 18:13:25,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-04-01 18:13:25,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 18:13:25,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 30 conjunts are in the unsatisfiable core [2023-04-01 18:13:25,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 18:13:27,065 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 18:13:27,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2023-04-01 18:13:27,191 INFO L134 CoverageAnalysis]: Checked inductivity of 10696 backedges. 1 proven. 69 refuted. 0 times theorem prover too weak. 10626 trivial. 0 not checked. [2023-04-01 18:13:27,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 18:13:28,017 INFO L321 Elim1Store]: treesize reduction 13, result has 73.5 percent of original size [2023-04-01 18:13:28,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 49 treesize of output 47 [2023-04-01 18:13:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 10696 backedges. 14 proven. 56 refuted. 0 times theorem prover too weak. 10626 trivial. 0 not checked. [2023-04-01 18:13:28,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178839773] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 18:13:28,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 18:13:28,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 18, 16] total 135 [2023-04-01 18:13:28,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523866620] [2023-04-01 18:13:28,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 18:13:28,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2023-04-01 18:13:28,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:13:28,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2023-04-01 18:13:28,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5590, Invalid=12500, Unknown=0, NotChecked=0, Total=18090 [2023-04-01 18:13:28,166 INFO L87 Difference]: Start difference. First operand 318 states and 350 transitions. Second operand has 135 states, 132 states have (on average 2.128787878787879) internal successors, (281), 131 states have internal predecessors, (281), 5 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 18:13:30,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:13:32,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:13:34,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:13:36,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:13:38,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:13:40,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:13:42,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:13:44,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:13:46,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:13:48,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:13:50,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:13:52,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:13:54,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:13:56,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:13:58,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:00,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:02,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:04,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:06,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:08,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:10,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:12,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:14,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:16,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:18,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:20,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:23,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:25,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:27,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:29,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:31,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:33,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:35,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:37,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:39,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:41,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:43,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:45,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:47,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:49,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:51,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:53,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:55,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:57,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:14:59,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:01,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:04,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:06,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:08,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:10,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:12,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:14,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:16,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:18,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:20,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:22,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:24,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:26,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:28,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:30,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:32,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:34,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:36,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:39,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:41,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:43,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:45,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:47,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:49,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:51,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:53,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:55,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:57,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:15:59,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:01,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:03,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:05,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:08,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:10,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:12,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:14,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:16,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:18,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:20,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:22,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:24,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:26,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:28,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:30,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:33,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:35,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:37,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:39,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:41,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:43,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:45,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:47,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:49,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:51,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:53,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:56,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:16:58,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:17:00,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:17:02,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:17:04,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:17:06,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:17:07,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:17:09,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:17:10,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:17:11,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:17:13,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:17:15,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 18:17:16,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:17:16,196 INFO L93 Difference]: Finished difference Result 490 states and 574 transitions. [2023-04-01 18:17:16,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2023-04-01 18:17:16,196 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 132 states have (on average 2.128787878787879) internal successors, (281), 131 states have internal predecessors, (281), 5 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 272 [2023-04-01 18:17:16,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:17:16,198 INFO L225 Difference]: With dead ends: 490 [2023-04-01 18:17:16,198 INFO L226 Difference]: Without dead ends: 383 [2023-04-01 18:17:16,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12276 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=17043, Invalid=51863, Unknown=0, NotChecked=0, Total=68906 [2023-04-01 18:17:16,203 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 325 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 30 mSolverCounterUnsat, 112 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 220.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 112 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 220.7s IncrementalHoareTripleChecker+Time [2023-04-01 18:17:16,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 107 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1355 Invalid, 112 Unknown, 0 Unchecked, 220.7s Time] [2023-04-01 18:17:16,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-04-01 18:17:16,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 328. [2023-04-01 18:17:16,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 318 states have (on average 1.1037735849056605) internal successors, (351), 319 states have internal predecessors, (351), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 18:17:16,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 360 transitions. [2023-04-01 18:17:16,215 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 360 transitions. Word has length 272 [2023-04-01 18:17:16,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:17:16,215 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 360 transitions. [2023-04-01 18:17:16,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 132 states have (on average 2.128787878787879) internal successors, (281), 131 states have internal predecessors, (281), 5 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 18:17:16,216 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 360 transitions. [2023-04-01 18:17:16,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-04-01 18:17:16,217 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:17:16,217 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 14, 14, 14, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:17:16,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-01 18:17:16,422 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,SelfDestructingSolverStorable12 [2023-04-01 18:17:16,422 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:17:16,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:17:16,422 INFO L85 PathProgramCache]: Analyzing trace with hash 667473346, now seen corresponding path program 4 times [2023-04-01 18:17:16,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:17:16,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694017225] [2023-04-01 18:17:16,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:17:16,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:17:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:17:21,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:17:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:17:21,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2023-04-01 18:17:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:17:21,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2023-04-01 18:17:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:17:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 10913 backedges. 4 proven. 10609 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-04-01 18:17:21,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:17:21,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694017225] [2023-04-01 18:17:21,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694017225] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:17:21,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370605530] [2023-04-01 18:17:21,652 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-01 18:17:21,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:17:21,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:17:21,654 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) [2023-04-01 18:17:21,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 18:17:21,930 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-01 18:17:21,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 18:17:21,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 18:17:21,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 18:17:22,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10913 backedges. 1 proven. 287 refuted. 0 times theorem prover too weak. 10625 trivial. 0 not checked. [2023-04-01 18:17:22,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 18:17:23,443 INFO L134 CoverageAnalysis]: Checked inductivity of 10913 backedges. 5 proven. 287 refuted. 0 times theorem prover too weak. 10621 trivial. 0 not checked. [2023-04-01 18:17:23,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370605530] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 18:17:23,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 18:17:23,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 17, 17] total 137 [2023-04-01 18:17:23,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894050701] [2023-04-01 18:17:23,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 18:17:23,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2023-04-01 18:17:23,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 18:17:23,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2023-04-01 18:17:23,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6062, Invalid=12570, Unknown=0, NotChecked=0, Total=18632 [2023-04-01 18:17:23,447 INFO L87 Difference]: Start difference. First operand 328 states and 360 transitions. Second operand has 137 states, 137 states have (on average 2.3649635036496353) internal successors, (324), 136 states have internal predecessors, (324), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 18:17:30,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 18:17:30,189 INFO L93 Difference]: Finished difference Result 542 states and 670 transitions. [2023-04-01 18:17:30,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2023-04-01 18:17:30,190 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 2.3649635036496353) internal successors, (324), 136 states have internal predecessors, (324), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 282 [2023-04-01 18:17:30,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 18:17:30,191 INFO L225 Difference]: With dead ends: 542 [2023-04-01 18:17:30,191 INFO L226 Difference]: Without dead ends: 427 [2023-04-01 18:17:30,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 809 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13651 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=18180, Invalid=54990, Unknown=0, NotChecked=0, Total=73170 [2023-04-01 18:17:30,194 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 433 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 18:17:30,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 52 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 18:17:30,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2023-04-01 18:17:30,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 426. [2023-04-01 18:17:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 416 states have (on average 1.15625) internal successors, (481), 417 states have internal predecessors, (481), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 18:17:30,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 490 transitions. [2023-04-01 18:17:30,221 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 490 transitions. Word has length 282 [2023-04-01 18:17:30,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 18:17:30,221 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 490 transitions. [2023-04-01 18:17:30,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 2.3649635036496353) internal successors, (324), 136 states have internal predecessors, (324), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 18:17:30,221 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 490 transitions. [2023-04-01 18:17:30,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-04-01 18:17:30,228 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 18:17:30,228 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 30, 30, 30, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 18:17:30,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-04-01 18:17:30,428 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,SelfDestructingSolverStorable13 [2023-04-01 18:17:30,428 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 18:17:30,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 18:17:30,428 INFO L85 PathProgramCache]: Analyzing trace with hash -839827100, now seen corresponding path program 5 times [2023-04-01 18:17:30,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 18:17:30,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85842465] [2023-04-01 18:17:30,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 18:17:30,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 18:17:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:17:36,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 18:17:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:17:36,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-04-01 18:17:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:17:36,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2023-04-01 18:17:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 18:17:36,105 INFO L134 CoverageAnalysis]: Checked inductivity of 12168 backedges. 4 proven. 10816 refuted. 0 times theorem prover too weak. 1348 trivial. 0 not checked. [2023-04-01 18:17:36,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 18:17:36,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85842465] [2023-04-01 18:17:36,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85842465] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 18:17:36,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475536618] [2023-04-01 18:17:36,106 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-04-01 18:17:36,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 18:17:36,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 18:17:36,107 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) [2023-04-01 18:17:36,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process