/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/psyco/psyco_security.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:52:53,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:52:53,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:52:53,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 23:52:53,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-30 23:52:53,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-30 23:52:53,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-30 23:52:53,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-30 23:52:53,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-30 23:52:53,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-30 23:52:53,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-30 23:52:53,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-30 23:52:53,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-30 23:52:53,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-30 23:52:53,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-30 23:52:53,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-30 23:52:53,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-30 23:52:53,539 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 [2023-03-30 23:52:53,571 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:52:53,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:52:53,573 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:52:53,573 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:52:53,574 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:52:53,574 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:52:53,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:52:53,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:52:53,575 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:52:53,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:52:53,576 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:52:53,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:52:53,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:52:53,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:52:53,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:52:53,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:52:53,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:52:53,577 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:52:53,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:52:53,577 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:52:53,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:52:53,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:52:53,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:52:53,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:52:53,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:52:53,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:52:53,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:52:53,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:52:53,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:52:53,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:52:53,579 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:52:53,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:52:53,579 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:52:53,579 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:52:53,580 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:52:53,580 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:52:53,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:52:53,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:52:53,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:52:53,836 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:52:53,837 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:52:53,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_security.c [2023-03-30 23:52:54,953 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:52:55,143 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:52:55,143 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_security.c [2023-03-30 23:52:55,156 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bf8803a7/001eaeba6ddf4f26a15b6b12c2daece5/FLAGf81429763 [2023-03-30 23:52:55,167 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bf8803a7/001eaeba6ddf4f26a15b6b12c2daece5 [2023-03-30 23:52:55,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:52:55,170 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:52:55,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:52:55,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:52:55,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:52:55,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:52:55" (1/1) ... [2023-03-30 23:52:55,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e8c1d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:52:55, skipping insertion in model container [2023-03-30 23:52:55,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:52:55" (1/1) ... [2023-03-30 23:52:55,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:52:55,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:52:55,331 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/psyco/psyco_security.c[12744,12757] [2023-03-30 23:52:55,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:52:55,344 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:52:55,369 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/psyco/psyco_security.c[12744,12757] [2023-03-30 23:52:55,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:52:55,380 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:52:55,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:52:55 WrapperNode [2023-03-30 23:52:55,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:52:55,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:52:55,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:52:55,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:52:55,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:52:55" (1/1) ... [2023-03-30 23:52:55,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:52:55" (1/1) ... [2023-03-30 23:52:55,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:52:55" (1/1) ... [2023-03-30 23:52:55,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:52:55" (1/1) ... [2023-03-30 23:52:55,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:52:55" (1/1) ... [2023-03-30 23:52:55,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:52:55" (1/1) ... [2023-03-30 23:52:55,431 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:52:55" (1/1) ... [2023-03-30 23:52:55,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:52:55" (1/1) ... [2023-03-30 23:52:55,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:52:55,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:52:55,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:52:55,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:52:55,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:52:55" (1/1) ... [2023-03-30 23:52:55,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:52:55,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:52:55,470 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) [2023-03-30 23:52:55,472 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 [2023-03-30 23:52:55,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:52:55,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:52:55,500 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:52:55,501 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:52:55,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:52:55,501 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:52:55,501 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:52:55,501 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:52:55,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:52:55,501 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:52:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:52:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:52:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:52:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:52:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:52:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:52:55,589 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:52:55,591 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:52:55,943 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:52:55,949 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:52:55,949 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-03-30 23:52:55,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:52:55 BoogieIcfgContainer [2023-03-30 23:52:55,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:52:55,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:52:55,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:52:55,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:52:55,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:52:55" (1/3) ... [2023-03-30 23:52:55,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d4969e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:52:55, skipping insertion in model container [2023-03-30 23:52:55,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:52:55" (2/3) ... [2023-03-30 23:52:55,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d4969e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:52:55, skipping insertion in model container [2023-03-30 23:52:55,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:52:55" (3/3) ... [2023-03-30 23:52:55,970 INFO L112 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2023-03-30 23:52:55,983 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:52:55,984 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:52:56,038 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:52:56,043 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;@3b315799, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:52:56,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:52:56,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 77 states have (on average 1.922077922077922) internal successors, (148), 78 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:52:56,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-03-30 23:52:56,054 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:52:56,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:52:56,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:52:56,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:52:56,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1578471454, now seen corresponding path program 1 times [2023-03-30 23:52:56,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:52:56,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076704272] [2023-03-30 23:52:56,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:52:56,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:52:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:52:56,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:52:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:52:56,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:52:56,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:52:56,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076704272] [2023-03-30 23:52:56,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076704272] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:52:56,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:52:56,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-30 23:52:56,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513071741] [2023-03-30 23:52:56,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:52:56,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:52:56,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:52:56,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:52:56,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-30 23:52:56,322 INFO L87 Difference]: Start difference. First operand has 83 states, 77 states have (on average 1.922077922077922) internal successors, (148), 78 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:56,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:52:56,541 INFO L93 Difference]: Finished difference Result 160 states and 298 transitions. [2023-03-30 23:52:56,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:52:56,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-03-30 23:52:56,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:52:56,554 INFO L225 Difference]: With dead ends: 160 [2023-03-30 23:52:56,554 INFO L226 Difference]: Without dead ends: 78 [2023-03-30 23:52:56,558 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 [2023-03-30 23:52:56,564 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 118 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-30 23:52:56,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 10 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-30 23:52:56,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-03-30 23:52:56,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-03-30 23:52:56,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 74 states have (on average 1.4864864864864864) internal successors, (110), 74 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 113 transitions. [2023-03-30 23:52:56,625 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 113 transitions. Word has length 13 [2023-03-30 23:52:56,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:52:56,627 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 113 transitions. [2023-03-30 23:52:56,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:56,627 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 113 transitions. [2023-03-30 23:52:56,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-03-30 23:52:56,629 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:52:56,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:52:56,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:52:56,630 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:52:56,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:52:56,631 INFO L85 PathProgramCache]: Analyzing trace with hash -2074500547, now seen corresponding path program 1 times [2023-03-30 23:52:56,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:52:56,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245981743] [2023-03-30 23:52:56,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:52:56,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:52:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:52:56,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:52:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:52:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:52:56,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:52:56,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245981743] [2023-03-30 23:52:56,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245981743] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:52:56,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:52:56,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-30 23:52:56,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906125756] [2023-03-30 23:52:56,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:52:56,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-30 23:52:56,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:52:56,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-30 23:52:56,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-30 23:52:56,711 INFO L87 Difference]: Start difference. First operand 78 states and 113 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:56,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:52:56,929 INFO L93 Difference]: Finished difference Result 153 states and 224 transitions. [2023-03-30 23:52:56,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-30 23:52:56,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-03-30 23:52:56,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:52:56,931 INFO L225 Difference]: With dead ends: 153 [2023-03-30 23:52:56,931 INFO L226 Difference]: Without dead ends: 81 [2023-03-30 23:52:56,931 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 [2023-03-30 23:52:56,933 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 115 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-30 23:52:56,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 12 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-30 23:52:56,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-03-30 23:52:56,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-03-30 23:52:56,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 77 states have (on average 1.4675324675324675) internal successors, (113), 77 states have internal predecessors, (113), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:56,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 116 transitions. [2023-03-30 23:52:56,945 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 116 transitions. Word has length 14 [2023-03-30 23:52:56,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:52:56,946 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 116 transitions. [2023-03-30 23:52:56,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:56,946 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 116 transitions. [2023-03-30 23:52:56,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-03-30 23:52:56,947 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:52:56,947 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:52:56,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 23:52:56,947 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:52:56,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:52:56,948 INFO L85 PathProgramCache]: Analyzing trace with hash -2049230431, now seen corresponding path program 1 times [2023-03-30 23:52:56,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:52:56,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251548211] [2023-03-30 23:52:56,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:52:56,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:52:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:52:57,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:52:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:52:57,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:52:57,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:52:57,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251548211] [2023-03-30 23:52:57,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251548211] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:52:57,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:52:57,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-30 23:52:57,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538818848] [2023-03-30 23:52:57,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:52:57,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-30 23:52:57,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:52:57,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-30 23:52:57,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-30 23:52:57,031 INFO L87 Difference]: Start difference. First operand 81 states and 116 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:57,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:52:57,249 INFO L93 Difference]: Finished difference Result 161 states and 233 transitions. [2023-03-30 23:52:57,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-30 23:52:57,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-03-30 23:52:57,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:52:57,252 INFO L225 Difference]: With dead ends: 161 [2023-03-30 23:52:57,253 INFO L226 Difference]: Without dead ends: 87 [2023-03-30 23:52:57,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:52:57,259 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 133 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-30 23:52:57,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 12 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-30 23:52:57,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-03-30 23:52:57,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2023-03-30 23:52:57,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 81 states have (on average 1.4444444444444444) internal successors, (117), 81 states have internal predecessors, (117), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:57,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 120 transitions. [2023-03-30 23:52:57,281 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 120 transitions. Word has length 19 [2023-03-30 23:52:57,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:52:57,281 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 120 transitions. [2023-03-30 23:52:57,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:57,282 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 120 transitions. [2023-03-30 23:52:57,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-03-30 23:52:57,283 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:52:57,283 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:52:57,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-30 23:52:57,284 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:52:57,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:52:57,286 INFO L85 PathProgramCache]: Analyzing trace with hash 889958168, now seen corresponding path program 1 times [2023-03-30 23:52:57,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:52:57,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004939202] [2023-03-30 23:52:57,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:52:57,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:52:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:52:57,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:52:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:52:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:52:57,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:52:57,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004939202] [2023-03-30 23:52:57,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004939202] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:52:57,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:52:57,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-30 23:52:57,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613807863] [2023-03-30 23:52:57,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:52:57,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:52:57,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:52:57,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:52:57,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:52:57,400 INFO L87 Difference]: Start difference. First operand 85 states and 120 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:57,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:52:57,765 INFO L93 Difference]: Finished difference Result 258 states and 366 transitions. [2023-03-30 23:52:57,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-30 23:52:57,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-03-30 23:52:57,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:52:57,767 INFO L225 Difference]: With dead ends: 258 [2023-03-30 23:52:57,767 INFO L226 Difference]: Without dead ends: 168 [2023-03-30 23:52:57,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:52:57,768 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 239 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-30 23:52:57,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 12 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-30 23:52:57,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-03-30 23:52:57,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 133. [2023-03-30 23:52:57,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 129 states have (on average 1.5116279069767442) internal successors, (195), 129 states have internal predecessors, (195), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:57,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 198 transitions. [2023-03-30 23:52:57,781 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 198 transitions. Word has length 22 [2023-03-30 23:52:57,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:52:57,781 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 198 transitions. [2023-03-30 23:52:57,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:57,782 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 198 transitions. [2023-03-30 23:52:57,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-03-30 23:52:57,782 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:52:57,783 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:52:57,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-30 23:52:57,783 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:52:57,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:52:57,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1337215083, now seen corresponding path program 1 times [2023-03-30 23:52:57,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:52:57,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949185167] [2023-03-30 23:52:57,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:52:57,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:52:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:52:57,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:52:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:52:57,838 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-30 23:52:57,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:52:57,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949185167] [2023-03-30 23:52:57,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949185167] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:52:57,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:52:57,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-30 23:52:57,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447784508] [2023-03-30 23:52:57,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:52:57,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-30 23:52:57,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:52:57,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-30 23:52:57,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-30 23:52:57,841 INFO L87 Difference]: Start difference. First operand 133 states and 198 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:57,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:52:57,985 INFO L93 Difference]: Finished difference Result 237 states and 352 transitions. [2023-03-30 23:52:57,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-30 23:52:57,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2023-03-30 23:52:57,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:52:57,987 INFO L225 Difference]: With dead ends: 237 [2023-03-30 23:52:57,987 INFO L226 Difference]: Without dead ends: 111 [2023-03-30 23:52:57,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:52:57,991 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 129 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:52:57,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 12 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 23:52:57,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-03-30 23:52:58,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2023-03-30 23:52:58,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.4190476190476191) internal successors, (149), 105 states have internal predecessors, (149), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:58,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 152 transitions. [2023-03-30 23:52:58,012 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 152 transitions. Word has length 26 [2023-03-30 23:52:58,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:52:58,012 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 152 transitions. [2023-03-30 23:52:58,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:58,013 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 152 transitions. [2023-03-30 23:52:58,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-03-30 23:52:58,013 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:52:58,013 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:52:58,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-30 23:52:58,014 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:52:58,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:52:58,014 INFO L85 PathProgramCache]: Analyzing trace with hash -54366665, now seen corresponding path program 1 times [2023-03-30 23:52:58,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:52:58,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401082088] [2023-03-30 23:52:58,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:52:58,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:52:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:52:58,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:52:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:52:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-30 23:52:58,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:52:58,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401082088] [2023-03-30 23:52:58,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401082088] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:52:58,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:52:58,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-30 23:52:58,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511235648] [2023-03-30 23:52:58,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:52:58,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-30 23:52:58,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:52:58,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-30 23:52:58,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-30 23:52:58,073 INFO L87 Difference]: Start difference. First operand 109 states and 152 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:58,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:52:58,200 INFO L93 Difference]: Finished difference Result 193 states and 272 transitions. [2023-03-30 23:52:58,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-30 23:52:58,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2023-03-30 23:52:58,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:52:58,201 INFO L225 Difference]: With dead ends: 193 [2023-03-30 23:52:58,202 INFO L226 Difference]: Without dead ends: 91 [2023-03-30 23:52:58,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:52:58,203 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 111 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:52:58,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 12 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 23:52:58,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-03-30 23:52:58,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2023-03-30 23:52:58,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 85 states have (on average 1.4) internal successors, (119), 85 states have internal predecessors, (119), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:58,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 122 transitions. [2023-03-30 23:52:58,211 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 122 transitions. Word has length 28 [2023-03-30 23:52:58,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:52:58,212 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 122 transitions. [2023-03-30 23:52:58,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:58,212 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 122 transitions. [2023-03-30 23:52:58,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-03-30 23:52:58,213 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:52:58,213 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:52:58,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-30 23:52:58,213 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:52:58,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:52:58,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1725888791, now seen corresponding path program 1 times [2023-03-30 23:52:58,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:52:58,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923864669] [2023-03-30 23:52:58,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:52:58,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:52:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:52:58,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:52:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:52:58,262 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-30 23:52:58,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:52:58,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923864669] [2023-03-30 23:52:58,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923864669] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:52:58,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:52:58,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-30 23:52:58,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045202407] [2023-03-30 23:52:58,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:52:58,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-30 23:52:58,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:52:58,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-30 23:52:58,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-30 23:52:58,264 INFO L87 Difference]: Start difference. First operand 89 states and 122 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:58,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:52:58,378 INFO L93 Difference]: Finished difference Result 136 states and 189 transitions. [2023-03-30 23:52:58,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-30 23:52:58,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2023-03-30 23:52:58,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:52:58,379 INFO L225 Difference]: With dead ends: 136 [2023-03-30 23:52:58,379 INFO L226 Difference]: Without dead ends: 70 [2023-03-30 23:52:58,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:52:58,380 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 91 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:52:58,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 12 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 23:52:58,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-03-30 23:52:58,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-03-30 23:52:58,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 66 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:58,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2023-03-30 23:52:58,387 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 30 [2023-03-30 23:52:58,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:52:58,387 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2023-03-30 23:52:58,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:58,387 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2023-03-30 23:52:58,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-03-30 23:52:58,388 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:52:58,388 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:52:58,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-30 23:52:58,389 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:52:58,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:52:58,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1790657828, now seen corresponding path program 1 times [2023-03-30 23:52:58,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:52:58,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008271189] [2023-03-30 23:52:58,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:52:58,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:52:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:52:58,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:52:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:52:58,429 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-30 23:52:58,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:52:58,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008271189] [2023-03-30 23:52:58,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008271189] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:52:58,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:52:58,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-30 23:52:58,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241147513] [2023-03-30 23:52:58,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:52:58,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-30 23:52:58,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:52:58,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-30 23:52:58,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-30 23:52:58,431 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:58,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:52:58,546 INFO L93 Difference]: Finished difference Result 111 states and 143 transitions. [2023-03-30 23:52:58,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-30 23:52:58,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2023-03-30 23:52:58,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:52:58,547 INFO L225 Difference]: With dead ends: 111 [2023-03-30 23:52:58,548 INFO L226 Difference]: Without dead ends: 0 [2023-03-30 23:52:58,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:52:58,549 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 79 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:52:58,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 12 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 23:52:58,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-30 23:52:58,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-30 23:52:58,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-03-30 23:52:58,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-30 23:52:58,550 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2023-03-30 23:52:58,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:52:58,550 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-30 23:52:58,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:52:58,550 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-30 23:52:58,550 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-30 23:52:58,553 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-30 23:52:58,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-30 23:52:58,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-03-30 23:52:58,622 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2023-03-30 23:52:58,622 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2023-03-30 23:52:58,622 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 4) no Hoare annotation was computed. [2023-03-30 23:52:58,622 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2023-03-30 23:52:58,622 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= |old(~m_update~0)| ~m_update~0) (= |old(~m_initSign~0)| ~m_initSign~0) (= ~m_sign~0 |old(~m_sign~0)|) (= |old(~m_initVerify~0)| ~m_initVerify~0) (= ~m_Signature~0 |old(~m_Signature~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(~m_verify~0)| ~m_verify~0) (= |old(#NULL.base)| |#NULL.base|)) [2023-03-30 23:52:58,622 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-03-30 23:52:58,623 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-03-30 23:52:58,623 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-03-30 23:52:58,623 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-03-30 23:52:58,623 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-30 23:52:58,623 INFO L899 garLoopResultBuilder]: For program point L250(lines 250 265) no Hoare annotation was computed. [2023-03-30 23:52:58,623 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 15 392) no Hoare annotation was computed. [2023-03-30 23:52:58,623 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 133) no Hoare annotation was computed. [2023-03-30 23:52:58,623 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 63) no Hoare annotation was computed. [2023-03-30 23:52:58,623 INFO L899 garLoopResultBuilder]: For program point L366(lines 366 381) no Hoare annotation was computed. [2023-03-30 23:52:58,623 INFO L899 garLoopResultBuilder]: For program point L234(lines 234 249) no Hoare annotation was computed. [2023-03-30 23:52:58,623 INFO L899 garLoopResultBuilder]: For program point L168(lines 168 179) no Hoare annotation was computed. [2023-03-30 23:52:58,624 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 117) no Hoare annotation was computed. [2023-03-30 23:52:58,624 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 38) no Hoare annotation was computed. [2023-03-30 23:52:58,624 INFO L899 garLoopResultBuilder]: For program point L350(lines 350 365) no Hoare annotation was computed. [2023-03-30 23:52:58,624 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 233) no Hoare annotation was computed. [2023-03-30 23:52:58,624 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 284) no Hoare annotation was computed. [2023-03-30 23:52:58,624 INFO L899 garLoopResultBuilder]: For program point L152(lines 152 163) no Hoare annotation was computed. [2023-03-30 23:52:58,624 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 349) no Hoare annotation was computed. [2023-03-30 23:52:58,624 INFO L899 garLoopResultBuilder]: For program point L268(lines 268 279) no Hoare annotation was computed. [2023-03-30 23:52:58,624 INFO L899 garLoopResultBuilder]: For program point L202(lines 202 217) no Hoare annotation was computed. [2023-03-30 23:52:58,624 INFO L899 garLoopResultBuilder]: For program point L136(lines 136 147) no Hoare annotation was computed. [2023-03-30 23:52:58,624 INFO L899 garLoopResultBuilder]: For program point L318(lines 318 333) no Hoare annotation was computed. [2023-03-30 23:52:58,624 INFO L899 garLoopResultBuilder]: For program point L285(lines 285 384) no Hoare annotation was computed. [2023-03-30 23:52:58,625 INFO L899 garLoopResultBuilder]: For program point L252(lines 252 263) no Hoare annotation was computed. [2023-03-30 23:52:58,625 INFO L899 garLoopResultBuilder]: For program point L186(lines 186 201) no Hoare annotation was computed. [2023-03-30 23:52:58,625 INFO L899 garLoopResultBuilder]: For program point L120(lines 120 131) no Hoare annotation was computed. [2023-03-30 23:52:58,625 INFO L899 garLoopResultBuilder]: For program point L368(lines 368 379) no Hoare annotation was computed. [2023-03-30 23:52:58,625 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 317) no Hoare annotation was computed. [2023-03-30 23:52:58,627 INFO L895 garLoopResultBuilder]: At program point L368-2(lines 24 387) the Hoare annotation is: (or (and (= 2 main_~this_state~0) (= main_~q~0 3)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) (and (= main_~q~0 2) (= 0 main_~this_state~0)) (= main_~q~0 0)) [2023-03-30 23:52:58,628 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 15 392) no Hoare annotation was computed. [2023-03-30 23:52:58,628 INFO L899 garLoopResultBuilder]: For program point L236(lines 236 247) no Hoare annotation was computed. [2023-03-30 23:52:58,628 INFO L899 garLoopResultBuilder]: For program point L104(lines 104 115) no Hoare annotation was computed. [2023-03-30 23:52:58,628 INFO L899 garLoopResultBuilder]: For program point L352(lines 352 363) no Hoare annotation was computed. [2023-03-30 23:52:58,628 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 301) no Hoare annotation was computed. [2023-03-30 23:52:58,628 INFO L899 garLoopResultBuilder]: For program point L220(lines 220 231) no Hoare annotation was computed. [2023-03-30 23:52:58,628 INFO L899 garLoopResultBuilder]: For program point L88(lines 88 90) no Hoare annotation was computed. [2023-03-30 23:52:58,629 INFO L899 garLoopResultBuilder]: For program point L336(lines 336 347) no Hoare annotation was computed. [2023-03-30 23:52:58,629 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 215) no Hoare annotation was computed. [2023-03-30 23:52:58,629 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 74) no Hoare annotation was computed. [2023-03-30 23:52:58,629 INFO L899 garLoopResultBuilder]: For program point L320(lines 320 331) no Hoare annotation was computed. [2023-03-30 23:52:58,629 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 199) no Hoare annotation was computed. [2023-03-30 23:52:58,629 INFO L899 garLoopResultBuilder]: For program point L56(lines 56 58) no Hoare annotation was computed. [2023-03-30 23:52:58,629 INFO L899 garLoopResultBuilder]: For program point L304(lines 304 315) no Hoare annotation was computed. [2023-03-30 23:52:58,629 INFO L899 garLoopResultBuilder]: For program point L172(lines 172 174) no Hoare annotation was computed. [2023-03-30 23:52:58,629 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 299) no Hoare annotation was computed. [2023-03-30 23:52:58,630 INFO L899 garLoopResultBuilder]: For program point L156(lines 156 158) no Hoare annotation was computed. [2023-03-30 23:52:58,631 INFO L895 garLoopResultBuilder]: At program point L24-2(lines 24 387) the Hoare annotation is: (or (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) (and (not (= 2 main_~this_state~0)) (= main_~q~0 0))) [2023-03-30 23:52:58,631 INFO L899 garLoopResultBuilder]: For program point L24-3(lines 24 387) no Hoare annotation was computed. [2023-03-30 23:52:58,631 INFO L899 garLoopResultBuilder]: For program point L272(lines 272 274) no Hoare annotation was computed. [2023-03-30 23:52:58,631 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 142) no Hoare annotation was computed. [2023-03-30 23:52:58,631 INFO L899 garLoopResultBuilder]: For program point L256(lines 256 258) no Hoare annotation was computed. [2023-03-30 23:52:58,631 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 126) no Hoare annotation was computed. [2023-03-30 23:52:58,631 INFO L899 garLoopResultBuilder]: For program point L372(lines 372 374) no Hoare annotation was computed. [2023-03-30 23:52:58,631 INFO L899 garLoopResultBuilder]: For program point L240(lines 240 242) no Hoare annotation was computed. [2023-03-30 23:52:58,632 INFO L899 garLoopResultBuilder]: For program point L108(lines 108 110) no Hoare annotation was computed. [2023-03-30 23:52:58,632 INFO L899 garLoopResultBuilder]: For program point L356(lines 356 358) no Hoare annotation was computed. [2023-03-30 23:52:58,632 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 226) no Hoare annotation was computed. [2023-03-30 23:52:58,632 INFO L899 garLoopResultBuilder]: For program point L340(lines 340 342) no Hoare annotation was computed. [2023-03-30 23:52:58,632 INFO L899 garLoopResultBuilder]: For program point L208(lines 208 210) no Hoare annotation was computed. [2023-03-30 23:52:58,632 INFO L899 garLoopResultBuilder]: For program point L324(lines 324 326) no Hoare annotation was computed. [2023-03-30 23:52:58,632 INFO L899 garLoopResultBuilder]: For program point L192(lines 192 194) no Hoare annotation was computed. [2023-03-30 23:52:58,633 INFO L899 garLoopResultBuilder]: For program point L308(lines 308 310) no Hoare annotation was computed. [2023-03-30 23:52:58,633 INFO L899 garLoopResultBuilder]: For program point L292(lines 292 294) no Hoare annotation was computed. [2023-03-30 23:52:58,634 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 48) no Hoare annotation was computed. [2023-03-30 23:52:58,634 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 392) the Hoare annotation is: true [2023-03-30 23:52:58,634 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 391) no Hoare annotation was computed. [2023-03-30 23:52:58,634 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 45) no Hoare annotation was computed. [2023-03-30 23:52:58,634 INFO L899 garLoopResultBuilder]: For program point L32(lines 32 43) no Hoare annotation was computed. [2023-03-30 23:52:58,634 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 97) no Hoare annotation was computed. [2023-03-30 23:52:58,634 INFO L899 garLoopResultBuilder]: For program point L49(lines 49 100) no Hoare annotation was computed. [2023-03-30 23:52:58,634 INFO L899 garLoopResultBuilder]: For program point L66(lines 66 81) no Hoare annotation was computed. [2023-03-30 23:52:58,634 INFO L899 garLoopResultBuilder]: For program point L50(lines 50 65) no Hoare annotation was computed. [2023-03-30 23:52:58,634 INFO L899 garLoopResultBuilder]: For program point L166(lines 166 181) no Hoare annotation was computed. [2023-03-30 23:52:58,634 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 165) no Hoare annotation was computed. [2023-03-30 23:52:58,635 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 95) no Hoare annotation was computed. [2023-03-30 23:52:58,635 INFO L895 garLoopResultBuilder]: At program point ERROR(lines 15 392) the Hoare annotation is: false [2023-03-30 23:52:58,635 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 281) no Hoare annotation was computed. [2023-03-30 23:52:58,635 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 149) no Hoare annotation was computed. [2023-03-30 23:52:58,635 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 184) no Hoare annotation was computed. [2023-03-30 23:52:58,635 INFO L899 garLoopResultBuilder]: For program point L68(lines 68 79) no Hoare annotation was computed. [2023-03-30 23:52:58,638 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:52:58,640 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-30 23:52:58,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.03 11:52:58 BoogieIcfgContainer [2023-03-30 23:52:58,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-30 23:52:58,657 INFO L158 Benchmark]: Toolchain (without parser) took 3486.89ms. Allocated memory is still 282.1MB. Free memory was 221.6MB in the beginning and 223.2MB in the end (delta: -1.6MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-30 23:52:58,657 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory is still 130.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-30 23:52:58,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.70ms. Allocated memory is still 282.1MB. Free memory was 221.6MB in the beginning and 209.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-03-30 23:52:58,658 INFO L158 Benchmark]: Boogie Preprocessor took 53.52ms. Allocated memory is still 282.1MB. Free memory was 209.0MB in the beginning and 206.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-30 23:52:58,658 INFO L158 Benchmark]: RCFGBuilder took 515.54ms. Allocated memory is still 282.1MB. Free memory was 206.9MB in the beginning and 188.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-03-30 23:52:58,658 INFO L158 Benchmark]: TraceAbstraction took 2703.59ms. Allocated memory is still 282.1MB. Free memory was 187.0MB in the beginning and 223.2MB in the end (delta: -36.2MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-30 23:52:58,659 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory is still 130.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 209.70ms. Allocated memory is still 282.1MB. Free memory was 221.6MB in the beginning and 209.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 53.52ms. Allocated memory is still 282.1MB. Free memory was 209.0MB in the beginning and 206.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 515.54ms. Allocated memory is still 282.1MB. Free memory was 206.9MB in the beginning and 188.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 2703.59ms. Allocated memory is still 282.1MB. Free memory was 187.0MB in the beginning and 223.2MB in the end (delta: -36.2MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 391]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1015 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1015 mSDsluCounter, 94 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1477 IncrementalHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 42 mSDtfsCounter, 1477 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=4, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 41 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 13 NumberOfFragments, 70 HoareAnnotationTreeSize, 7 FomulaSimplifications, 66 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 185 NumberOfCodeBlocks, 185 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 177 ConstructedInterpolants, 0 QuantifiedInterpolants, 470 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 34/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((2 == this_state && q == 3) || (4 <= q && 3 == this_state)) || (q == 2 && 0 == this_state)) || q == 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (4 <= q && 3 == this_state) || (!(2 == this_state) && q == 0) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2023-03-30 23:52:58,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...