/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/float-benchs/divmul_buf_diverge.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 00:01:48,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 00:01:48,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 00:01:48,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-31 00:01:48,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 00:01:48,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 00:01:48,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 00:01:48,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 00:01:48,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 00:01:48,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 00:01:48,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 00:01:48,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 00:01:48,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 00:01:48,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 00:01:48,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 00:01:48,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 00:01:48,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 00:01:48,098 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 [2023-03-31 00:01:48,130 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 00:01:48,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 00:01:48,131 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 00:01:48,131 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 00:01:48,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 00:01:48,133 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 00:01:48,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 00:01:48,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 00:01:48,134 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 00:01:48,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 00:01:48,135 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 00:01:48,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 00:01:48,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 00:01:48,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 00:01:48,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 00:01:48,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 00:01:48,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 00:01:48,136 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 00:01:48,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 00:01:48,136 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 00:01:48,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 00:01:48,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 00:01:48,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 00:01:48,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 00:01:48,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:01:48,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 00:01:48,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 00:01:48,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 00:01:48,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 00:01:48,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 00:01:48,138 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 00:01:48,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 00:01:48,139 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 00:01:48,139 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 00:01:48,139 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 00:01:48,139 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 00:01:48,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 00:01:48,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 00:01:48,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 00:01:48,393 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 00:01:48,397 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 00:01:48,398 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/divmul_buf_diverge.c [2023-03-31 00:01:49,631 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 00:01:49,780 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 00:01:49,780 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/divmul_buf_diverge.c [2023-03-31 00:01:49,785 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d07370a7/9392a3610fde438797d55e765f209784/FLAG719b0be96 [2023-03-31 00:01:49,804 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d07370a7/9392a3610fde438797d55e765f209784 [2023-03-31 00:01:49,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 00:01:49,808 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 00:01:49,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 00:01:49,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 00:01:49,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 00:01:49,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:01:49" (1/1) ... [2023-03-31 00:01:49,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7255fda5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:49, skipping insertion in model container [2023-03-31 00:01:49,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:01:49" (1/1) ... [2023-03-31 00:01:49,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 00:01:49,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 00:01:49,946 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/float-benchs/divmul_buf_diverge.c[617,630] [2023-03-31 00:01:49,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:01:49,973 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 00:01:49,982 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/float-benchs/divmul_buf_diverge.c[617,630] [2023-03-31 00:01:49,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:01:49,993 INFO L208 MainTranslator]: Completed translation [2023-03-31 00:01:49,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:49 WrapperNode [2023-03-31 00:01:49,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 00:01:49,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 00:01:49,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 00:01:49,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 00:01:50,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:49" (1/1) ... [2023-03-31 00:01:50,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:49" (1/1) ... [2023-03-31 00:01:50,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:49" (1/1) ... [2023-03-31 00:01:50,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:49" (1/1) ... [2023-03-31 00:01:50,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:49" (1/1) ... [2023-03-31 00:01:50,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:49" (1/1) ... [2023-03-31 00:01:50,013 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:49" (1/1) ... [2023-03-31 00:01:50,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:49" (1/1) ... [2023-03-31 00:01:50,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 00:01:50,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 00:01:50,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 00:01:50,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 00:01:50,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:49" (1/1) ... [2023-03-31 00:01:50,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:01:50,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:01:50,081 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) [2023-03-31 00:01:50,086 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 [2023-03-31 00:01:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 00:01:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 00:01:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 00:01:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 00:01:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 00:01:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_clock [2023-03-31 00:01:50,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 00:01:50,123 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 00:01:50,123 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 00:01:50,124 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 00:01:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 00:01:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 00:01:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2023-03-31 00:01:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 00:01:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 00:01:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_clock [2023-03-31 00:01:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 00:01:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 00:01:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 00:01:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 00:01:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 00:01:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 00:01:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 00:01:50,188 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 00:01:50,191 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 00:01:50,294 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 00:01:50,304 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 00:01:50,304 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 00:01:50,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:01:50 BoogieIcfgContainer [2023-03-31 00:01:50,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 00:01:50,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 00:01:50,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 00:01:50,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 00:01:50,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 12:01:49" (1/3) ... [2023-03-31 00:01:50,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a709587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:01:50, skipping insertion in model container [2023-03-31 00:01:50,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:49" (2/3) ... [2023-03-31 00:01:50,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a709587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:01:50, skipping insertion in model container [2023-03-31 00:01:50,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:01:50" (3/3) ... [2023-03-31 00:01:50,323 INFO L112 eAbstractionObserver]: Analyzing ICFG divmul_buf_diverge.c [2023-03-31 00:01:50,358 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 00:01:50,358 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 00:01:50,433 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 00:01:50,439 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;@df0d77e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 00:01:50,439 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 00:01:50,443 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-31 00:01:50,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 00:01:50,450 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:01:50,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:01:50,451 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:01:50,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:01:50,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1792617558, now seen corresponding path program 1 times [2023-03-31 00:01:50,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:01:50,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658041799] [2023-03-31 00:01:50,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:01:50,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:01:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:50,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:01:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:50,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:01:50,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:01:50,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658041799] [2023-03-31 00:01:50,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658041799] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:01:50,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:01:50,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 00:01:50,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170629236] [2023-03-31 00:01:50,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:01:50,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 00:01:50,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:01:50,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 00:01:50,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 00:01:50,757 INFO L87 Difference]: Start difference. First operand has 31 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:01:50,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:01:50,911 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2023-03-31 00:01:50,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 00:01:50,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-03-31 00:01:50,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:01:50,921 INFO L225 Difference]: With dead ends: 63 [2023-03-31 00:01:50,921 INFO L226 Difference]: Without dead ends: 31 [2023-03-31 00:01:50,925 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 [2023-03-31 00:01:50,952 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 33 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:01:50,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 16 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:01:50,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-03-31 00:01:51,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2023-03-31 00:01:51,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 00:01:51,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2023-03-31 00:01:51,020 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 11 [2023-03-31 00:01:51,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:01:51,027 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2023-03-31 00:01:51,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:01:51,028 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2023-03-31 00:01:51,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-03-31 00:01:51,029 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:01:51,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:01:51,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 00:01:51,030 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:01:51,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:01:51,031 INFO L85 PathProgramCache]: Analyzing trace with hash 944504749, now seen corresponding path program 1 times [2023-03-31 00:01:51,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:01:51,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520706456] [2023-03-31 00:01:51,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:01:51,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:01:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:51,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:01:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:51,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 00:01:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:51,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:01:51,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:01:51,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520706456] [2023-03-31 00:01:51,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520706456] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:01:51,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284302459] [2023-03-31 00:01:51,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:01:51,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:01:51,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:01:51,142 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:01:51,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 00:01:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:51,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2023-03-31 00:01:51,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:01:51,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:01:51,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:01:51,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:01:51,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284302459] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:01:51,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 00:01:51,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-03-31 00:01:51,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844295053] [2023-03-31 00:01:51,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 00:01:51,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 00:01:51,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:01:51,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 00:01:51,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-03-31 00:01:51,293 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-31 00:01:51,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:01:51,491 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2023-03-31 00:01:51,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 00:01:51,492 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 18 [2023-03-31 00:01:51,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:01:51,493 INFO L225 Difference]: With dead ends: 51 [2023-03-31 00:01:51,494 INFO L226 Difference]: Without dead ends: 46 [2023-03-31 00:01:51,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-03-31 00:01:51,497 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 53 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:01:51,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 17 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:01:51,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-03-31 00:01:51,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-03-31 00:01:51,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 11 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-03-31 00:01:51,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2023-03-31 00:01:51,522 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 18 [2023-03-31 00:01:51,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:01:51,523 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2023-03-31 00:01:51,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-31 00:01:51,523 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2023-03-31 00:01:51,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-03-31 00:01:51,526 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:01:51,526 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:01:51,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 00:01:51,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:01:51,741 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:01:51,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:01:51,741 INFO L85 PathProgramCache]: Analyzing trace with hash -901499754, now seen corresponding path program 2 times [2023-03-31 00:01:51,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:01:51,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124418503] [2023-03-31 00:01:51,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:01:51,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:01:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:51,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:01:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:51,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 00:01:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:51,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 00:01:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:51,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-03-31 00:01:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:51,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-03-31 00:01:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:51,960 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-03-31 00:01:51,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:01:51,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124418503] [2023-03-31 00:01:51,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124418503] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:01:51,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011956051] [2023-03-31 00:01:51,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-03-31 00:01:51,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:01:51,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:01:51,962 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:01:51,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 00:01:52,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-03-31 00:01:52,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 00:01:52,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-31 00:01:52,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:01:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-03-31 00:01:52,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:01:52,182 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-03-31 00:01:52,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011956051] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:01:52,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 00:01:52,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2023-03-31 00:01:52,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250821544] [2023-03-31 00:01:52,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 00:01:52,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-31 00:01:52,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:01:52,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-31 00:01:52,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2023-03-31 00:01:52,188 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-03-31 00:01:52,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:01:52,549 INFO L93 Difference]: Finished difference Result 93 states and 126 transitions. [2023-03-31 00:01:52,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 00:01:52,549 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 39 [2023-03-31 00:01:52,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:01:52,551 INFO L225 Difference]: With dead ends: 93 [2023-03-31 00:01:52,551 INFO L226 Difference]: Without dead ends: 88 [2023-03-31 00:01:52,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2023-03-31 00:01:52,553 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 113 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 00:01:52,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 27 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 00:01:52,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-03-31 00:01:52,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-03-31 00:01:52,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 61 states have (on average 1.180327868852459) internal successors, (72), 61 states have internal predecessors, (72), 23 states have call successors, (23), 5 states have call predecessors, (23), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-03-31 00:01:52,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 116 transitions. [2023-03-31 00:01:52,573 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 116 transitions. Word has length 39 [2023-03-31 00:01:52,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:01:52,575 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 116 transitions. [2023-03-31 00:01:52,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-03-31 00:01:52,575 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 116 transitions. [2023-03-31 00:01:52,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-03-31 00:01:52,578 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:01:52,578 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:01:52,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 00:01:52,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-03-31 00:01:52,779 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:01:52,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:01:52,780 INFO L85 PathProgramCache]: Analyzing trace with hash -873440010, now seen corresponding path program 3 times [2023-03-31 00:01:52,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:01:52,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401181840] [2023-03-31 00:01:52,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:01:52,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:01:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:53,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:01:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:53,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 00:01:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:53,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 00:01:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:53,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-03-31 00:01:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:53,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-03-31 00:01:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:53,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-03-31 00:01:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:53,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-03-31 00:01:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:53,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-03-31 00:01:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:53,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-03-31 00:01:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:53,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-03-31 00:01:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:53,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-03-31 00:01:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:53,179 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-03-31 00:01:53,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:01:53,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401181840] [2023-03-31 00:01:53,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401181840] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:01:53,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574510004] [2023-03-31 00:01:53,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 00:01:53,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:01:53,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:01:53,189 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:01:53,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 00:01:53,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-03-31 00:01:53,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 00:01:53,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjunts are in the unsatisfiable core [2023-03-31 00:01:53,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:01:53,386 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-03-31 00:01:53,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:01:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-03-31 00:01:53,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574510004] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:01:53,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 00:01:53,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 26 [2023-03-31 00:01:53,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070057576] [2023-03-31 00:01:53,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 00:01:53,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-03-31 00:01:53,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:01:53,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-03-31 00:01:53,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2023-03-31 00:01:53,693 INFO L87 Difference]: Start difference. First operand 88 states and 116 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 25 states have internal predecessors, (96), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-03-31 00:01:54,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:01:54,387 INFO L93 Difference]: Finished difference Result 177 states and 252 transitions. [2023-03-31 00:01:54,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-03-31 00:01:54,389 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 25 states have internal predecessors, (96), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 81 [2023-03-31 00:01:54,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:01:54,394 INFO L225 Difference]: With dead ends: 177 [2023-03-31 00:01:54,394 INFO L226 Difference]: Without dead ends: 172 [2023-03-31 00:01:54,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=853, Invalid=1403, Unknown=0, NotChecked=0, Total=2256 [2023-03-31 00:01:54,398 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 271 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 00:01:54,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 37 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 00:01:54,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-03-31 00:01:54,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2023-03-31 00:01:54,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 121 states have (on average 1.1900826446280992) internal successors, (144), 121 states have internal predecessors, (144), 47 states have call successors, (47), 5 states have call predecessors, (47), 3 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-03-31 00:01:54,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 236 transitions. [2023-03-31 00:01:54,443 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 236 transitions. Word has length 81 [2023-03-31 00:01:54,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:01:54,446 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 236 transitions. [2023-03-31 00:01:54,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 25 states have internal predecessors, (96), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-03-31 00:01:54,446 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 236 transitions. [2023-03-31 00:01:54,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-03-31 00:01:54,459 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:01:54,459 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:01:54,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-03-31 00:01:54,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:01:54,666 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:01:54,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:01:54,667 INFO L85 PathProgramCache]: Analyzing trace with hash 635782582, now seen corresponding path program 4 times [2023-03-31 00:01:54,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:01:54,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645312448] [2023-03-31 00:01:54,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:01:54,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:01:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:01:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 00:01:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 00:01:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-03-31 00:01:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-03-31 00:01:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-03-31 00:01:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-03-31 00:01:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-03-31 00:01:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-03-31 00:01:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-03-31 00:01:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-03-31 00:01:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-03-31 00:01:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-03-31 00:01:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-03-31 00:01:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-03-31 00:01:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-03-31 00:01:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-03-31 00:01:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-03-31 00:01:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-03-31 00:01:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-03-31 00:01:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-03-31 00:01:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-03-31 00:01:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-03-31 00:01:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:55,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-03-31 00:01:55,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:01:55,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645312448] [2023-03-31 00:01:55,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645312448] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:01:55,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982273167] [2023-03-31 00:01:55,287 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-03-31 00:01:55,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:01:55,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:01:55,288 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:01:55,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-31 00:01:55,448 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-03-31 00:01:55,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 00:01:55,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 24 conjunts are in the unsatisfiable core [2023-03-31 00:01:55,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:01:55,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-03-31 00:01:55,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:01:56,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-03-31 00:01:56,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982273167] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:01:56,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 00:01:56,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 50 [2023-03-31 00:01:56,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713603815] [2023-03-31 00:01:56,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 00:01:56,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-03-31 00:01:56,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:01:56,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-03-31 00:01:56,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2023-03-31 00:01:56,573 INFO L87 Difference]: Start difference. First operand 172 states and 236 transitions. Second operand has 50 states, 50 states have (on average 3.84) internal successors, (192), 49 states have internal predecessors, (192), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-03-31 00:01:58,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:01:58,362 INFO L93 Difference]: Finished difference Result 345 states and 504 transitions. [2023-03-31 00:01:58,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-03-31 00:01:58,363 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.84) internal successors, (192), 49 states have internal predecessors, (192), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 165 [2023-03-31 00:01:58,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:01:58,369 INFO L225 Difference]: With dead ends: 345 [2023-03-31 00:01:58,370 INFO L226 Difference]: Without dead ends: 340 [2023-03-31 00:01:58,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3433, Invalid=5687, Unknown=0, NotChecked=0, Total=9120 [2023-03-31 00:01:58,374 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 579 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 00:01:58,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 27 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 00:01:58,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2023-03-31 00:01:58,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2023-03-31 00:01:58,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 241 states have (on average 1.1950207468879668) internal successors, (288), 241 states have internal predecessors, (288), 95 states have call successors, (95), 5 states have call predecessors, (95), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2023-03-31 00:01:58,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 476 transitions. [2023-03-31 00:01:58,450 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 476 transitions. Word has length 165 [2023-03-31 00:01:58,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:01:58,450 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 476 transitions. [2023-03-31 00:01:58,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.84) internal successors, (192), 49 states have internal predecessors, (192), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-03-31 00:01:58,451 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 476 transitions. [2023-03-31 00:01:58,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2023-03-31 00:01:58,458 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:01:58,458 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:01:58,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-31 00:01:58,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:01:58,665 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:01:58,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:01:58,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1546221366, now seen corresponding path program 5 times [2023-03-31 00:01:58,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:01:58,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668067687] [2023-03-31 00:01:58,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:01:58,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:01:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:02:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 00:02:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 00:02:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-03-31 00:02:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-03-31 00:02:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-03-31 00:02:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-03-31 00:02:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-03-31 00:02:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-03-31 00:02:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-03-31 00:02:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-03-31 00:02:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-03-31 00:02:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-03-31 00:02:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-03-31 00:02:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-03-31 00:02:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-03-31 00:02:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-03-31 00:02:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-03-31 00:02:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-03-31 00:02:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-03-31 00:02:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-03-31 00:02:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-03-31 00:02:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-03-31 00:02:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-03-31 00:02:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-03-31 00:02:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-03-31 00:02:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-03-31 00:02:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-03-31 00:02:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-03-31 00:02:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-03-31 00:02:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-03-31 00:02:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-03-31 00:02:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2023-03-31 00:02:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-03-31 00:02:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-03-31 00:02:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-03-31 00:02:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-03-31 00:02:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2023-03-31 00:02:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-03-31 00:02:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-03-31 00:02:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-03-31 00:02:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-03-31 00:02:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-03-31 00:02:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2023-03-31 00:02:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2023-03-31 00:02:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2023-03-31 00:02:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2023-03-31 00:02:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:00,672 INFO L134 CoverageAnalysis]: Checked inductivity of 7291 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 2070 trivial. 0 not checked. [2023-03-31 00:02:00,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:02:00,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668067687] [2023-03-31 00:02:00,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668067687] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:02:00,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014152399] [2023-03-31 00:02:00,676 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-03-31 00:02:00,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:02:00,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:02:00,677 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:02:00,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-31 00:02:00,836 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2023-03-31 00:02:00,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 00:02:00,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 48 conjunts are in the unsatisfiable core [2023-03-31 00:02:00,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:02:01,160 INFO L134 CoverageAnalysis]: Checked inductivity of 7291 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 2070 trivial. 0 not checked. [2023-03-31 00:02:01,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:02:03,935 INFO L134 CoverageAnalysis]: Checked inductivity of 7291 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 2070 trivial. 0 not checked. [2023-03-31 00:02:03,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014152399] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:02:03,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 00:02:03,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 98 [2023-03-31 00:02:03,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180130257] [2023-03-31 00:02:03,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 00:02:03,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-03-31 00:02:03,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:02:03,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-03-31 00:02:03,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2023-03-31 00:02:03,945 INFO L87 Difference]: Start difference. First operand 340 states and 476 transitions. Second operand has 98 states, 98 states have (on average 3.9183673469387754) internal successors, (384), 97 states have internal predecessors, (384), 95 states have call successors, (97), 3 states have call predecessors, (97), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2023-03-31 00:02:09,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:02:09,303 INFO L93 Difference]: Finished difference Result 681 states and 1008 transitions. [2023-03-31 00:02:09,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-03-31 00:02:09,304 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 3.9183673469387754) internal successors, (384), 97 states have internal predecessors, (384), 95 states have call successors, (97), 3 states have call predecessors, (97), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) Word has length 333 [2023-03-31 00:02:09,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:02:09,307 INFO L225 Difference]: With dead ends: 681 [2023-03-31 00:02:09,308 INFO L226 Difference]: Without dead ends: 676 [2023-03-31 00:02:09,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5728 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=13777, Invalid=22895, Unknown=0, NotChecked=0, Total=36672 [2023-03-31 00:02:09,316 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1299 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 740 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 740 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 00:02:09,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 42 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [740 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 00:02:09,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-03-31 00:02:09,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 676. [2023-03-31 00:02:09,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 481 states have (on average 1.1975051975051976) internal successors, (576), 481 states have internal predecessors, (576), 191 states have call successors, (191), 5 states have call predecessors, (191), 3 states have return successors, (189), 189 states have call predecessors, (189), 189 states have call successors, (189) [2023-03-31 00:02:09,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 956 transitions. [2023-03-31 00:02:09,355 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 956 transitions. Word has length 333 [2023-03-31 00:02:09,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:02:09,356 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 956 transitions. [2023-03-31 00:02:09,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 3.9183673469387754) internal successors, (384), 97 states have internal predecessors, (384), 95 states have call successors, (97), 3 states have call predecessors, (97), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2023-03-31 00:02:09,357 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 956 transitions. [2023-03-31 00:02:09,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-03-31 00:02:09,371 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:02:09,371 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:02:09,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-31 00:02:09,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:02:09,578 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:02:09,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:02:09,579 INFO L85 PathProgramCache]: Analyzing trace with hash -715433418, now seen corresponding path program 6 times [2023-03-31 00:02:09,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:02:09,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768579763] [2023-03-31 00:02:09,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:02:09,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:02:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:02:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 00:02:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 00:02:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-03-31 00:02:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-03-31 00:02:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-03-31 00:02:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-03-31 00:02:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-03-31 00:02:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-03-31 00:02:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-03-31 00:02:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-03-31 00:02:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-03-31 00:02:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-03-31 00:02:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-03-31 00:02:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-03-31 00:02:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-03-31 00:02:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-03-31 00:02:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-03-31 00:02:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-03-31 00:02:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-03-31 00:02:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-03-31 00:02:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-03-31 00:02:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-03-31 00:02:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-03-31 00:02:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-03-31 00:02:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-03-31 00:02:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-03-31 00:02:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-03-31 00:02:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-03-31 00:02:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-03-31 00:02:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-03-31 00:02:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-03-31 00:02:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2023-03-31 00:02:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-03-31 00:02:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-03-31 00:02:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-03-31 00:02:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-03-31 00:02:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2023-03-31 00:02:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-03-31 00:02:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-03-31 00:02:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-03-31 00:02:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-03-31 00:02:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-03-31 00:02:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2023-03-31 00:02:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2023-03-31 00:02:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2023-03-31 00:02:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2023-03-31 00:02:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-03-31 00:02:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-03-31 00:02:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2023-03-31 00:02:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2023-03-31 00:02:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2023-03-31 00:02:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2023-03-31 00:02:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2023-03-31 00:02:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2023-03-31 00:02:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2023-03-31 00:02:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2023-03-31 00:02:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2023-03-31 00:02:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2023-03-31 00:02:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2023-03-31 00:02:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2023-03-31 00:02:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2023-03-31 00:02:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2023-03-31 00:02:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2023-03-31 00:02:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2023-03-31 00:02:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2023-03-31 00:02:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2023-03-31 00:02:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2023-03-31 00:02:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2023-03-31 00:02:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2023-03-31 00:02:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2023-03-31 00:02:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2023-03-31 00:02:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2023-03-31 00:02:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2023-03-31 00:02:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2023-03-31 00:02:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2023-03-31 00:02:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2023-03-31 00:02:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2023-03-31 00:02:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2023-03-31 00:02:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2023-03-31 00:02:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2023-03-31 00:02:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2023-03-31 00:02:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2023-03-31 00:02:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2023-03-31 00:02:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2023-03-31 00:02:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2023-03-31 00:02:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2023-03-31 00:02:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 611 [2023-03-31 00:02:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2023-03-31 00:02:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 625 [2023-03-31 00:02:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 632 [2023-03-31 00:02:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 639 [2023-03-31 00:02:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2023-03-31 00:02:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 653 [2023-03-31 00:02:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 660 [2023-03-31 00:02:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:02:16,241 INFO L134 CoverageAnalysis]: Checked inductivity of 30691 backedges. 0 proven. 21949 refuted. 0 times theorem prover too weak. 8742 trivial. 0 not checked. [2023-03-31 00:02:16,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:02:16,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768579763] [2023-03-31 00:02:16,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768579763] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:02:16,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713255250] [2023-03-31 00:02:16,242 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-03-31 00:02:16,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:02:16,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:02:16,243 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:02:16,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-31 00:02:16,521 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2023-03-31 00:02:16,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 00:02:16,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 1367 conjuncts, 96 conjunts are in the unsatisfiable core [2023-03-31 00:02:16,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:02:17,145 INFO L134 CoverageAnalysis]: Checked inductivity of 30691 backedges. 0 proven. 21949 refuted. 0 times theorem prover too weak. 8742 trivial. 0 not checked. [2023-03-31 00:02:17,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:02:26,393 INFO L134 CoverageAnalysis]: Checked inductivity of 30691 backedges. 0 proven. 21949 refuted. 0 times theorem prover too weak. 8742 trivial. 0 not checked. [2023-03-31 00:02:26,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713255250] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:02:26,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 00:02:26,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97, 97] total 194 [2023-03-31 00:02:26,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610454317] [2023-03-31 00:02:26,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 00:02:26,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2023-03-31 00:02:26,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:02:26,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2023-03-31 00:02:26,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18530, Invalid=18912, Unknown=0, NotChecked=0, Total=37442 [2023-03-31 00:02:26,422 INFO L87 Difference]: Start difference. First operand 676 states and 956 transitions. Second operand has 194 states, 194 states have (on average 3.9587628865979383) internal successors, (768), 193 states have internal predecessors, (768), 191 states have call successors, (193), 3 states have call predecessors, (193), 1 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190)