/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/reducercommutativity/sep20-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 22:15:07,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 22:15:07,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 22:15:07,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 22:15:07,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-30 22:15:07,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-30 22:15:07,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-30 22:15:07,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-30 22:15:07,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-30 22:15:07,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-30 22:15:07,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-30 22:15:07,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-30 22:15:07,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-30 22:15:07,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-30 22:15:07,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-30 22:15:07,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-30 22:15:07,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-30 22:15:07,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-30 22:15:07,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-30 22:15:07,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-30 22:15:07,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-30 22:15:07,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-30 22:15:07,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-30 22:15:07,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-30 22:15:07,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-30 22:15:07,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 22:15:07,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 22:15:07,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 22:15:07,366 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-30 22:15:07,382 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 22:15:07,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 22:15:07,382 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 22:15:07,382 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 22:15:07,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 22:15:07,383 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 22:15:07,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 22:15:07,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 22:15:07,384 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 22:15:07,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 22:15:07,384 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 22:15:07,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 22:15:07,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 22:15:07,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 22:15:07,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 22:15:07,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 22:15:07,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 22:15:07,385 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 22:15:07,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 22:15:07,385 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 22:15:07,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 22:15:07,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 22:15:07,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 22:15:07,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 22:15:07,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 22:15:07,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 22:15:07,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 22:15:07,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 22:15:07,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 22:15:07,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 22:15:07,387 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 22:15:07,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 22:15:07,387 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 22:15:07,387 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 22:15:07,387 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 22:15:07,387 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 22:15:07,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 22:15:07,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 22:15:07,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 22:15:07,606 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 22:15:07,606 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 22:15:07,607 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/sep20-1.i [2023-03-30 22:15:08,741 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 22:15:08,914 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 22:15:08,915 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep20-1.i [2023-03-30 22:15:08,919 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84b6000f4/040bc8507416445e8dbd935702dc2e46/FLAG37fe4b2c7 [2023-03-30 22:15:08,932 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84b6000f4/040bc8507416445e8dbd935702dc2e46 [2023-03-30 22:15:08,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 22:15:08,936 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 22:15:08,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 22:15:08,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 22:15:08,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 22:15:08,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 10:15:08" (1/1) ... [2023-03-30 22:15:08,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d790738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:08, skipping insertion in model container [2023-03-30 22:15:08,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 10:15:08" (1/1) ... [2023-03-30 22:15:08,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 22:15:08,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 22:15:09,139 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/reducercommutativity/sep20-1.i[1293,1306] [2023-03-30 22:15:09,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 22:15:09,154 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 22:15:09,186 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/reducercommutativity/sep20-1.i[1293,1306] [2023-03-30 22:15:09,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 22:15:09,202 INFO L208 MainTranslator]: Completed translation [2023-03-30 22:15:09,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:09 WrapperNode [2023-03-30 22:15:09,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 22:15:09,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 22:15:09,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 22:15:09,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 22:15:09,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:09" (1/1) ... [2023-03-30 22:15:09,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:09" (1/1) ... [2023-03-30 22:15:09,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:09" (1/1) ... [2023-03-30 22:15:09,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:09" (1/1) ... [2023-03-30 22:15:09,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:09" (1/1) ... [2023-03-30 22:15:09,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:09" (1/1) ... [2023-03-30 22:15:09,243 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:09" (1/1) ... [2023-03-30 22:15:09,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:09" (1/1) ... [2023-03-30 22:15:09,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 22:15:09,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 22:15:09,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 22:15:09,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 22:15:09,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:09" (1/1) ... [2023-03-30 22:15:09,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 22:15:09,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:09,283 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-30 22:15:09,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-30 22:15:09,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 22:15:09,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 22:15:09,318 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 22:15:09,318 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2023-03-30 22:15:09,318 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 22:15:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 22:15:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 22:15:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-30 22:15:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-30 22:15:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 22:15:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 22:15:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 22:15:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2023-03-30 22:15:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 22:15:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 22:15:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-30 22:15:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 22:15:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 22:15:09,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 22:15:09,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 22:15:09,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 22:15:09,383 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 22:15:09,385 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 22:15:09,610 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 22:15:09,615 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 22:15:09,615 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-03-30 22:15:09,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 10:15:09 BoogieIcfgContainer [2023-03-30 22:15:09,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 22:15:09,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 22:15:09,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 22:15:09,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 22:15:09,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 10:15:08" (1/3) ... [2023-03-30 22:15:09,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3adc55f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 10:15:09, skipping insertion in model container [2023-03-30 22:15:09,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:15:09" (2/3) ... [2023-03-30 22:15:09,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3adc55f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 10:15:09, skipping insertion in model container [2023-03-30 22:15:09,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 10:15:09" (3/3) ... [2023-03-30 22:15:09,641 INFO L112 eAbstractionObserver]: Analyzing ICFG sep20-1.i [2023-03-30 22:15:09,673 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 22:15:09,673 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 22:15:09,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 22:15:09,734 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;@4a7fc086, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 22:15:09,735 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 22:15:09,739 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-30 22:15:09,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-03-30 22:15:09,745 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:09,745 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:09,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:09,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:09,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1340267542, now seen corresponding path program 1 times [2023-03-30 22:15:09,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:09,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168988585] [2023-03-30 22:15:09,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:09,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:09,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:09,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-03-30 22:15:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:09,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-03-30 22:15:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:10,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-03-30 22:15:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:10,012 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-03-30 22:15:10,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:10,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168988585] [2023-03-30 22:15:10,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168988585] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:15:10,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 22:15:10,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-30 22:15:10,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103164677] [2023-03-30 22:15:10,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:15:10,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 22:15:10,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:10,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 22:15:10,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-30 22:15:10,046 INFO L87 Difference]: Start difference. First operand has 32 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:15:10,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:10,128 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2023-03-30 22:15:10,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 22:15:10,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2023-03-30 22:15:10,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:10,143 INFO L225 Difference]: With dead ends: 56 [2023-03-30 22:15:10,143 INFO L226 Difference]: Without dead ends: 27 [2023-03-30 22:15:10,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-30 22:15:10,153 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:10,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 10 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:15:10,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-03-30 22:15:10,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-03-30 22:15:10,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:10,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2023-03-30 22:15:10,212 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 32 [2023-03-30 22:15:10,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:10,213 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2023-03-30 22:15:10,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:15:10,214 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2023-03-30 22:15:10,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-03-30 22:15:10,217 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:10,217 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:10,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 22:15:10,218 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:10,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:10,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1608249685, now seen corresponding path program 1 times [2023-03-30 22:15:10,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:10,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530230207] [2023-03-30 22:15:10,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:10,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:10,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:10,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-03-30 22:15:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:10,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-03-30 22:15:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:10,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-03-30 22:15:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:10,447 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-03-30 22:15:10,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:10,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530230207] [2023-03-30 22:15:10,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530230207] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:10,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773318016] [2023-03-30 22:15:10,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:10,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:10,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:10,451 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) [2023-03-30 22:15:10,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 22:15:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:10,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2023-03-30 22:15:10,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:10,571 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-03-30 22:15:10,572 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 22:15:10,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773318016] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:15:10,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 22:15:10,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 22:15:10,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323765593] [2023-03-30 22:15:10,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:15:10,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 22:15:10,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:10,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 22:15:10,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 22:15:10,575 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:15:10,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:10,588 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2023-03-30 22:15:10,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 22:15:10,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2023-03-30 22:15:10,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:10,589 INFO L225 Difference]: With dead ends: 48 [2023-03-30 22:15:10,590 INFO L226 Difference]: Without dead ends: 29 [2023-03-30 22:15:10,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 22:15:10,591 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:10,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 58 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-30 22:15:10,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-03-30 22:15:10,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2023-03-30 22:15:10,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:10,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2023-03-30 22:15:10,598 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 32 [2023-03-30 22:15:10,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:10,599 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2023-03-30 22:15:10,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:15:10,599 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-03-30 22:15:10,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-03-30 22:15:10,600 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:10,600 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:10,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-30 22:15:10,806 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 [2023-03-30 22:15:10,807 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:10,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:10,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1378666163, now seen corresponding path program 1 times [2023-03-30 22:15:10,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:10,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810312182] [2023-03-30 22:15:10,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:10,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:10,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:10,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-30 22:15:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:10,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-30 22:15:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:10,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-03-30 22:15:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:10,976 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-03-30 22:15:10,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:10,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810312182] [2023-03-30 22:15:10,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810312182] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:10,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185491743] [2023-03-30 22:15:10,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:10,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:10,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:10,983 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) [2023-03-30 22:15:10,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 22:15:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:11,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2023-03-30 22:15:11,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:11,087 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-03-30 22:15:11,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 22:15:11,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185491743] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:15:11,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 22:15:11,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2023-03-30 22:15:11,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755539280] [2023-03-30 22:15:11,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:15:11,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 22:15:11,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:11,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 22:15:11,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 22:15:11,090 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:15:11,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:11,119 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2023-03-30 22:15:11,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 22:15:11,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2023-03-30 22:15:11,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:11,120 INFO L225 Difference]: With dead ends: 49 [2023-03-30 22:15:11,120 INFO L226 Difference]: Without dead ends: 31 [2023-03-30 22:15:11,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 22:15:11,122 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 3 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:11,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 58 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-30 22:15:11,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-03-30 22:15:11,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2023-03-30 22:15:11,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:11,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-03-30 22:15:11,129 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 34 [2023-03-30 22:15:11,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:11,129 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-03-30 22:15:11,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:15:11,130 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-03-30 22:15:11,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-03-30 22:15:11,131 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:11,131 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:11,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-30 22:15:11,336 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 [2023-03-30 22:15:11,337 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:11,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:11,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1532493389, now seen corresponding path program 1 times [2023-03-30 22:15:11,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:11,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178673937] [2023-03-30 22:15:11,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:11,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:11,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:11,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-30 22:15:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:11,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-30 22:15:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:11,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-03-30 22:15:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:11,465 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-03-30 22:15:11,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:11,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178673937] [2023-03-30 22:15:11,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178673937] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:11,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811704250] [2023-03-30 22:15:11,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:11,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:11,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:11,467 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) [2023-03-30 22:15:11,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 22:15:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:11,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 2 conjunts are in the unsatisfiable core [2023-03-30 22:15:11,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:11,553 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-03-30 22:15:11,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 22:15:11,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811704250] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:15:11,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 22:15:11,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 22:15:11,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529464022] [2023-03-30 22:15:11,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:15:11,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 22:15:11,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:11,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 22:15:11,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 22:15:11,556 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:15:11,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:11,566 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2023-03-30 22:15:11,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 22:15:11,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2023-03-30 22:15:11,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:11,568 INFO L225 Difference]: With dead ends: 45 [2023-03-30 22:15:11,568 INFO L226 Difference]: Without dead ends: 31 [2023-03-30 22:15:11,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 22:15:11,569 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:11,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 58 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-30 22:15:11,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-03-30 22:15:11,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2023-03-30 22:15:11,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:11,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2023-03-30 22:15:11,576 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 43 [2023-03-30 22:15:11,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:11,577 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2023-03-30 22:15:11,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:15:11,578 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-03-30 22:15:11,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-03-30 22:15:11,579 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:11,579 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:11,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-30 22:15:11,785 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 [2023-03-30 22:15:11,785 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:11,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:11,786 INFO L85 PathProgramCache]: Analyzing trace with hash 2018137525, now seen corresponding path program 1 times [2023-03-30 22:15:11,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:11,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722880482] [2023-03-30 22:15:11,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:11,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:11,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:11,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-30 22:15:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:11,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-30 22:15:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:11,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-03-30 22:15:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:11,875 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-03-30 22:15:11,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:11,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722880482] [2023-03-30 22:15:11,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722880482] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:11,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785382639] [2023-03-30 22:15:11,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:11,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:11,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:11,877 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) [2023-03-30 22:15:11,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 22:15:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:11,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjunts are in the unsatisfiable core [2023-03-30 22:15:11,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:12,000 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-03-30 22:15:12,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:15:12,063 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-03-30 22:15:12,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785382639] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:15:12,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:15:12,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-03-30 22:15:12,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101699327] [2023-03-30 22:15:12,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:15:12,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 22:15:12,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:12,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 22:15:12,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-03-30 22:15:12,066 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:12,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:12,223 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2023-03-30 22:15:12,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 22:15:12,224 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2023-03-30 22:15:12,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:12,225 INFO L225 Difference]: With dead ends: 57 [2023-03-30 22:15:12,225 INFO L226 Difference]: Without dead ends: 36 [2023-03-30 22:15:12,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-03-30 22:15:12,228 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 33 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:12,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 27 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:15:12,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-03-30 22:15:12,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-03-30 22:15:12,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:12,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2023-03-30 22:15:12,249 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 45 [2023-03-30 22:15:12,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:12,250 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2023-03-30 22:15:12,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:12,250 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2023-03-30 22:15:12,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-03-30 22:15:12,256 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:12,256 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:12,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-30 22:15:12,456 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 [2023-03-30 22:15:12,457 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:12,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:12,457 INFO L85 PathProgramCache]: Analyzing trace with hash -718656241, now seen corresponding path program 2 times [2023-03-30 22:15:12,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:12,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47587991] [2023-03-30 22:15:12,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:12,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:12,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:12,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-30 22:15:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:12,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-03-30 22:15:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:12,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-03-30 22:15:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-03-30 22:15:12,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:12,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47587991] [2023-03-30 22:15:12,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47587991] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:12,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114391452] [2023-03-30 22:15:12,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-03-30 22:15:12,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:12,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:12,620 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) [2023-03-30 22:15:12,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-30 22:15:12,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-03-30 22:15:12,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:15:12,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-30 22:15:12,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:12,762 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-03-30 22:15:12,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:15:12,852 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-03-30 22:15:12,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114391452] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:15:12,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:15:12,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2023-03-30 22:15:12,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108897800] [2023-03-30 22:15:12,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:15:12,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-03-30 22:15:12,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:12,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-03-30 22:15:12,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2023-03-30 22:15:12,857 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-30 22:15:13,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:13,141 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2023-03-30 22:15:13,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-03-30 22:15:13,141 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2023-03-30 22:15:13,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:13,142 INFO L225 Difference]: With dead ends: 74 [2023-03-30 22:15:13,142 INFO L226 Difference]: Without dead ends: 53 [2023-03-30 22:15:13,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=489, Unknown=0, NotChecked=0, Total=702 [2023-03-30 22:15:13,143 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 57 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:13,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 32 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:15:13,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-03-30 22:15:13,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2023-03-30 22:15:13,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:13,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2023-03-30 22:15:13,151 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 51 [2023-03-30 22:15:13,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:13,151 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2023-03-30 22:15:13,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-30 22:15:13,151 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2023-03-30 22:15:13,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-03-30 22:15:13,152 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:13,152 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:13,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-03-30 22:15:13,353 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 [2023-03-30 22:15:13,353 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:13,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:13,354 INFO L85 PathProgramCache]: Analyzing trace with hash 637917693, now seen corresponding path program 3 times [2023-03-30 22:15:13,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:13,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633277339] [2023-03-30 22:15:13,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:13,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:13,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:13,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-03-30 22:15:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:13,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-03-30 22:15:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:13,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-03-30 22:15:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:13,479 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2023-03-30 22:15:13,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:13,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633277339] [2023-03-30 22:15:13,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633277339] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:13,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104134833] [2023-03-30 22:15:13,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-30 22:15:13,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:13,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:13,481 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) [2023-03-30 22:15:13,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-30 22:15:13,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-03-30 22:15:13,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:15:13,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2023-03-30 22:15:13,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:13,602 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-03-30 22:15:13,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:15:13,630 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2023-03-30 22:15:13,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104134833] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:15:13,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:15:13,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-03-30 22:15:13,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596184570] [2023-03-30 22:15:13,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:15:13,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 22:15:13,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:13,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 22:15:13,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-03-30 22:15:13,632 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-03-30 22:15:13,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:13,733 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2023-03-30 22:15:13,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 22:15:13,734 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 72 [2023-03-30 22:15:13,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:13,737 INFO L225 Difference]: With dead ends: 74 [2023-03-30 22:15:13,737 INFO L226 Difference]: Without dead ends: 57 [2023-03-30 22:15:13,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-03-30 22:15:13,738 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:13,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 22 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:15:13,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-03-30 22:15:13,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-03-30 22:15:13,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:13,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2023-03-30 22:15:13,757 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 72 [2023-03-30 22:15:13,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:13,758 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2023-03-30 22:15:13,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-03-30 22:15:13,758 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2023-03-30 22:15:13,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-03-30 22:15:13,760 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:13,760 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:13,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-03-30 22:15:13,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:13,966 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:13,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:13,966 INFO L85 PathProgramCache]: Analyzing trace with hash -80307273, now seen corresponding path program 4 times [2023-03-30 22:15:13,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:13,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963544350] [2023-03-30 22:15:13,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:13,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:14,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:14,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-03-30 22:15:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:14,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-03-30 22:15:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:14,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-03-30 22:15:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:14,296 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-03-30 22:15:14,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:14,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963544350] [2023-03-30 22:15:14,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963544350] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:14,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327692542] [2023-03-30 22:15:14,299 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-03-30 22:15:14,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:14,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:14,301 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:15:14,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-03-30 22:15:14,416 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-03-30 22:15:14,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:15:14,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 22:15:14,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:14,468 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-03-30 22:15:14,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:15:14,527 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-03-30 22:15:14,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327692542] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:15:14,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:15:14,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 20 [2023-03-30 22:15:14,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130775746] [2023-03-30 22:15:14,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:15:14,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-03-30 22:15:14,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:14,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-03-30 22:15:14,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-03-30 22:15:14,530 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:14,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:14,853 INFO L93 Difference]: Finished difference Result 102 states and 125 transitions. [2023-03-30 22:15:14,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-30 22:15:14,854 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 78 [2023-03-30 22:15:14,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:14,854 INFO L225 Difference]: With dead ends: 102 [2023-03-30 22:15:14,854 INFO L226 Difference]: Without dead ends: 72 [2023-03-30 22:15:14,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=1017, Unknown=0, NotChecked=0, Total=1332 [2023-03-30 22:15:14,856 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 85 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:14,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 32 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:15:14,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-03-30 22:15:14,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2023-03-30 22:15:14,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 63 states have internal predecessors, (72), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:14,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2023-03-30 22:15:14,863 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 78 [2023-03-30 22:15:14,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:14,863 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2023-03-30 22:15:14,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:14,863 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2023-03-30 22:15:14,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-03-30 22:15:14,864 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:14,864 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 11, 11, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:14,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-03-30 22:15:15,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:15,070 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:15,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:15,071 INFO L85 PathProgramCache]: Analyzing trace with hash 514205785, now seen corresponding path program 5 times [2023-03-30 22:15:15,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:15,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821006962] [2023-03-30 22:15:15,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:15,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:15,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:15,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-03-30 22:15:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:15,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-03-30 22:15:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:15,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-30 22:15:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:15,520 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-03-30 22:15:15,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:15,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821006962] [2023-03-30 22:15:15,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821006962] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:15,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844715528] [2023-03-30 22:15:15,521 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-03-30 22:15:15,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:15,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:15,522 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:15:15,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-03-30 22:15:16,016 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-03-30 22:15:16,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:15:16,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2023-03-30 22:15:16,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:16,141 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 244 proven. 51 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-03-30 22:15:16,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:15:16,313 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2023-03-30 22:15:16,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844715528] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:15:16,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:15:16,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 29 [2023-03-30 22:15:16,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137957337] [2023-03-30 22:15:16,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:15:16,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-03-30 22:15:16,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:16,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-03-30 22:15:16,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2023-03-30 22:15:16,315 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 28 states have internal predecessors, (94), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:16,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:16,926 INFO L93 Difference]: Finished difference Result 140 states and 179 transitions. [2023-03-30 22:15:16,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-03-30 22:15:16,926 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 28 states have internal predecessors, (94), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 116 [2023-03-30 22:15:16,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:16,927 INFO L225 Difference]: With dead ends: 140 [2023-03-30 22:15:16,927 INFO L226 Difference]: Without dead ends: 98 [2023-03-30 22:15:16,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=630, Invalid=2340, Unknown=0, NotChecked=0, Total=2970 [2023-03-30 22:15:16,929 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 137 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:16,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 47 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-30 22:15:16,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-03-30 22:15:16,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2023-03-30 22:15:16,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 89 states have (on average 1.1910112359550562) internal successors, (106), 89 states have internal predecessors, (106), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:16,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 115 transitions. [2023-03-30 22:15:16,939 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 115 transitions. Word has length 116 [2023-03-30 22:15:16,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:16,940 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 115 transitions. [2023-03-30 22:15:16,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 28 states have internal predecessors, (94), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:16,940 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 115 transitions. [2023-03-30 22:15:16,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-03-30 22:15:16,944 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:16,945 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 12, 12, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:16,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-03-30 22:15:17,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-03-30 22:15:17,152 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:17,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:17,153 INFO L85 PathProgramCache]: Analyzing trace with hash 679667451, now seen corresponding path program 6 times [2023-03-30 22:15:17,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:17,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12360443] [2023-03-30 22:15:17,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:17,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:17,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:17,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-03-30 22:15:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:17,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-03-30 22:15:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:17,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-03-30 22:15:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:17,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2884 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 2740 trivial. 0 not checked. [2023-03-30 22:15:17,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:17,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12360443] [2023-03-30 22:15:17,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12360443] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:17,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149280252] [2023-03-30 22:15:17,816 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-03-30 22:15:17,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:17,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:17,817 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:15:17,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-03-30 22:15:17,996 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-03-30 22:15:17,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:15:17,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-30 22:15:18,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:18,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2884 backedges. 1242 proven. 16 refuted. 0 times theorem prover too weak. 1626 trivial. 0 not checked. [2023-03-30 22:15:18,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:15:18,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2884 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2868 trivial. 0 not checked. [2023-03-30 22:15:18,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149280252] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:15:18,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:15:18,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7, 7] total 26 [2023-03-30 22:15:18,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068481075] [2023-03-30 22:15:18,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:15:18,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-03-30 22:15:18,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:18,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-03-30 22:15:18,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2023-03-30 22:15:18,211 INFO L87 Difference]: Start difference. First operand 97 states and 115 transitions. Second operand has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:18,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:18,733 INFO L93 Difference]: Finished difference Result 178 states and 220 transitions. [2023-03-30 22:15:18,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-03-30 22:15:18,733 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 190 [2023-03-30 22:15:18,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:18,734 INFO L225 Difference]: With dead ends: 178 [2023-03-30 22:15:18,734 INFO L226 Difference]: Without dead ends: 112 [2023-03-30 22:15:18,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=510, Invalid=1842, Unknown=0, NotChecked=0, Total=2352 [2023-03-30 22:15:18,736 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 72 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:18,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 47 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-30 22:15:18,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-03-30 22:15:18,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2023-03-30 22:15:18,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 103 states have (on average 1.1650485436893203) internal successors, (120), 103 states have internal predecessors, (120), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:18,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 129 transitions. [2023-03-30 22:15:18,744 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 129 transitions. Word has length 190 [2023-03-30 22:15:18,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:18,744 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 129 transitions. [2023-03-30 22:15:18,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:18,745 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 129 transitions. [2023-03-30 22:15:18,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-03-30 22:15:18,746 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:18,746 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 13, 13, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:18,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-03-30 22:15:18,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-03-30 22:15:18,965 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:18,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:18,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1674387473, now seen corresponding path program 7 times [2023-03-30 22:15:18,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:18,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042130929] [2023-03-30 22:15:18,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:18,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:19,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:19,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-03-30 22:15:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:19,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-03-30 22:15:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:19,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-03-30 22:15:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:19,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2993 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2023-03-30 22:15:19,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:19,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042130929] [2023-03-30 22:15:19,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042130929] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:19,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314432288] [2023-03-30 22:15:19,653 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-03-30 22:15:19,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:19,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:19,657 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:15:19,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-03-30 22:15:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:19,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 15 conjunts are in the unsatisfiable core [2023-03-30 22:15:19,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2993 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2023-03-30 22:15:19,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:15:20,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2993 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2023-03-30 22:15:20,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314432288] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:15:20,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:15:20,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 24 [2023-03-30 22:15:20,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200441671] [2023-03-30 22:15:20,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:15:20,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-03-30 22:15:20,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:20,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-03-30 22:15:20,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2023-03-30 22:15:20,163 INFO L87 Difference]: Start difference. First operand 111 states and 129 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:20,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:20,519 INFO L93 Difference]: Finished difference Result 203 states and 245 transitions. [2023-03-30 22:15:20,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-03-30 22:15:20,520 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 204 [2023-03-30 22:15:20,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:20,521 INFO L225 Difference]: With dead ends: 203 [2023-03-30 22:15:20,521 INFO L226 Difference]: Without dead ends: 125 [2023-03-30 22:15:20,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 401 SyntacticMatches, 8 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=716, Invalid=1176, Unknown=0, NotChecked=0, Total=1892 [2023-03-30 22:15:20,522 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 64 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:20,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 17 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:15:20,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-03-30 22:15:20,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2023-03-30 22:15:20,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 117 states have (on average 1.1452991452991452) internal successors, (134), 117 states have internal predecessors, (134), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:20,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 143 transitions. [2023-03-30 22:15:20,530 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 143 transitions. Word has length 204 [2023-03-30 22:15:20,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:20,530 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 143 transitions. [2023-03-30 22:15:20,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-30 22:15:20,531 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 143 transitions. [2023-03-30 22:15:20,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-03-30 22:15:20,532 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:20,537 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 20, 20, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:20,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-03-30 22:15:20,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-03-30 22:15:20,744 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:20,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:20,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1996983553, now seen corresponding path program 8 times [2023-03-30 22:15:20,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:20,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844953402] [2023-03-30 22:15:20,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:20,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:21,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:21,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-03-30 22:15:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:21,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-03-30 22:15:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:21,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-03-30 22:15:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:21,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3224 backedges. 0 proven. 1527 refuted. 0 times theorem prover too weak. 1697 trivial. 0 not checked. [2023-03-30 22:15:21,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:21,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844953402] [2023-03-30 22:15:21,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844953402] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:21,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491600280] [2023-03-30 22:15:21,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-03-30 22:15:21,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:21,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:21,606 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:15:21,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-03-30 22:15:21,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-03-30 22:15:21,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:15:21,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 16 conjunts are in the unsatisfiable core [2023-03-30 22:15:21,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:21,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3224 backedges. 1236 proven. 287 refuted. 0 times theorem prover too weak. 1701 trivial. 0 not checked. [2023-03-30 22:15:21,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:15:22,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3224 backedges. 0 proven. 1527 refuted. 0 times theorem prover too weak. 1697 trivial. 0 not checked. [2023-03-30 22:15:22,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491600280] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:15:22,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:15:22,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 23 [2023-03-30 22:15:22,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140942455] [2023-03-30 22:15:22,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:15:22,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-03-30 22:15:22,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:22,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-03-30 22:15:22,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2023-03-30 22:15:22,150 INFO L87 Difference]: Start difference. First operand 125 states and 143 transitions. Second operand has 23 states, 23 states have (on average 3.9565217391304346) internal successors, (91), 22 states have internal predecessors, (91), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-30 22:15:22,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:22,572 INFO L93 Difference]: Finished difference Result 220 states and 269 transitions. [2023-03-30 22:15:22,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-03-30 22:15:22,577 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.9565217391304346) internal successors, (91), 22 states have internal predecessors, (91), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 218 [2023-03-30 22:15:22,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:22,578 INFO L225 Difference]: With dead ends: 220 [2023-03-30 22:15:22,578 INFO L226 Difference]: Without dead ends: 143 [2023-03-30 22:15:22,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 449 SyntacticMatches, 10 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2023-03-30 22:15:22,580 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 148 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:22,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 27 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:15:22,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-03-30 22:15:22,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2023-03-30 22:15:22,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 135 states have (on average 1.1703703703703703) internal successors, (158), 135 states have internal predecessors, (158), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:22,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 167 transitions. [2023-03-30 22:15:22,589 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 167 transitions. Word has length 218 [2023-03-30 22:15:22,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:22,589 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 167 transitions. [2023-03-30 22:15:22,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.9565217391304346) internal successors, (91), 22 states have internal predecessors, (91), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-30 22:15:22,589 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 167 transitions. [2023-03-30 22:15:22,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-03-30 22:15:22,592 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:22,592 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 20, 20, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:22,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-03-30 22:15:22,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-03-30 22:15:22,806 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:22,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:22,807 INFO L85 PathProgramCache]: Analyzing trace with hash 230138047, now seen corresponding path program 9 times [2023-03-30 22:15:22,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:22,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493664736] [2023-03-30 22:15:22,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:22,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:23,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:23,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-03-30 22:15:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:23,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-03-30 22:15:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:23,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-03-30 22:15:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:23,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6005 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5905 trivial. 0 not checked. [2023-03-30 22:15:23,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:23,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493664736] [2023-03-30 22:15:23,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493664736] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:23,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250295506] [2023-03-30 22:15:23,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-30 22:15:23,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:23,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:23,425 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:15:23,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-03-30 22:15:24,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-03-30 22:15:24,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:15:24,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 12 conjunts are in the unsatisfiable core [2023-03-30 22:15:24,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6005 backedges. 2490 proven. 100 refuted. 0 times theorem prover too weak. 3415 trivial. 0 not checked. [2023-03-30 22:15:24,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:15:24,683 INFO L134 CoverageAnalysis]: Checked inductivity of 6005 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5905 trivial. 0 not checked. [2023-03-30 22:15:24,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250295506] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:15:24,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:15:24,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 23 [2023-03-30 22:15:24,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309236508] [2023-03-30 22:15:24,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:15:24,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-03-30 22:15:24,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:24,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-03-30 22:15:24,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2023-03-30 22:15:24,686 INFO L87 Difference]: Start difference. First operand 143 states and 167 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 22 states have internal predecessors, (69), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-03-30 22:15:25,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:25,016 INFO L93 Difference]: Finished difference Result 232 states and 285 transitions. [2023-03-30 22:15:25,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-03-30 22:15:25,017 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 22 states have internal predecessors, (69), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 272 [2023-03-30 22:15:25,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:25,018 INFO L225 Difference]: With dead ends: 232 [2023-03-30 22:15:25,018 INFO L226 Difference]: Without dead ends: 161 [2023-03-30 22:15:25,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 540 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=652, Invalid=1070, Unknown=0, NotChecked=0, Total=1722 [2023-03-30 22:15:25,020 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 62 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:25,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 22 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:15:25,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-03-30 22:15:25,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-03-30 22:15:25,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 153 states have (on average 1.1503267973856208) internal successors, (176), 153 states have internal predecessors, (176), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:15:25,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 185 transitions. [2023-03-30 22:15:25,028 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 185 transitions. Word has length 272 [2023-03-30 22:15:25,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:25,028 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 185 transitions. [2023-03-30 22:15:25,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 22 states have internal predecessors, (69), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-03-30 22:15:25,028 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 185 transitions. [2023-03-30 22:15:25,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-03-30 22:15:25,031 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:25,031 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 20, 20, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:25,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-03-30 22:15:25,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-03-30 22:15:25,239 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:25,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:25,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1526644845, now seen corresponding path program 10 times [2023-03-30 22:15:25,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:25,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490364036] [2023-03-30 22:15:25,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:25,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:31,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:15:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:31,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-03-30 22:15:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:32,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-03-30 22:15:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:32,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-03-30 22:15:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:15:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6266 backedges. 116 proven. 5524 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2023-03-30 22:15:34,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:15:34,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490364036] [2023-03-30 22:15:34,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490364036] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:15:34,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68202212] [2023-03-30 22:15:34,823 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-03-30 22:15:34,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:15:34,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:15:34,824 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 22:15:34,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-03-30 22:15:35,186 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-03-30 22:15:35,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:15:35,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 145 conjunts are in the unsatisfiable core [2023-03-30 22:15:35,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:15:36,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6266 backedges. 0 proven. 5310 refuted. 0 times theorem prover too weak. 956 trivial. 0 not checked. [2023-03-30 22:15:36,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:15:39,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6266 backedges. 0 proven. 5310 refuted. 0 times theorem prover too weak. 956 trivial. 0 not checked. [2023-03-30 22:15:39,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68202212] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:15:39,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:15:39,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 30, 30] total 93 [2023-03-30 22:15:39,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227844128] [2023-03-30 22:15:39,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:15:39,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2023-03-30 22:15:39,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:15:39,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2023-03-30 22:15:39,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=8271, Unknown=0, NotChecked=0, Total=8556 [2023-03-30 22:15:39,301 INFO L87 Difference]: Start difference. First operand 161 states and 185 transitions. Second operand has 93 states, 91 states have (on average 2.5384615384615383) internal successors, (231), 86 states have internal predecessors, (231), 6 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2023-03-30 22:15:48,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:15:48,814 INFO L93 Difference]: Finished difference Result 906 states and 1312 transitions. [2023-03-30 22:15:48,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-03-30 22:15:48,816 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 91 states have (on average 2.5384615384615383) internal successors, (231), 86 states have internal predecessors, (231), 6 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 290 [2023-03-30 22:15:48,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:15:48,826 INFO L225 Difference]: With dead ends: 906 [2023-03-30 22:15:48,826 INFO L226 Difference]: Without dead ends: 902 [2023-03-30 22:15:48,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 574 SyntacticMatches, 8 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5981 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=684, Invalid=22878, Unknown=0, NotChecked=0, Total=23562 [2023-03-30 22:15:48,831 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 260 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 15680 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 15928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 15680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:15:48,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 317 Invalid, 15928 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [248 Valid, 15680 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-03-30 22:15:48,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2023-03-30 22:15:48,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 588. [2023-03-30 22:15:48,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 577 states have (on average 1.2859618717504333) internal successors, (742), 578 states have internal predecessors, (742), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-03-30 22:15:48,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 759 transitions. [2023-03-30 22:15:48,953 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 759 transitions. Word has length 290 [2023-03-30 22:15:48,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:15:48,953 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 759 transitions. [2023-03-30 22:15:48,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 91 states have (on average 2.5384615384615383) internal successors, (231), 86 states have internal predecessors, (231), 6 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2023-03-30 22:15:48,954 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 759 transitions. [2023-03-30 22:15:48,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-03-30 22:15:48,960 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:15:48,960 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 59, 20, 20, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:15:48,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-03-30 22:15:49,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-03-30 22:15:49,161 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:15:49,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:15:49,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2088264081, now seen corresponding path program 1 times [2023-03-30 22:15:49,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:15:49,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073789895] [2023-03-30 22:15:49,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:15:49,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:15:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat