/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/nla-digbench-scaling/cohencu-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 01:52:46,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 01:52:46,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 01:52:46,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 01:52:46,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 01:52:46,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 01:52:46,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 01:52:46,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 01:52:46,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 01:52:46,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 01:52:46,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 01:52:46,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 01:52:46,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 01:52:46,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 01:52:46,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 01:52:46,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 01:52:46,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 01:52:46,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 01:52:46,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 01:52:46,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 01:52:46,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 01:52:46,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 01:52:46,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 01:52:46,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 01:52:46,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 01:52:46,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 01:52:46,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 01:52:46,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 01:52:46,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 01:52:46,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 01:52:46,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 01:52:46,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 01:52:46,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 01:52:46,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 01:52:46,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 01:52:46,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 01:52:46,537 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 01:52:46,553 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 01:52:46,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 01:52:46,553 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 01:52:46,553 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 01:52:46,554 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 01:52:46,554 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 01:52:46,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 01:52:46,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 01:52:46,555 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 01:52:46,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 01:52:46,555 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 01:52:46,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 01:52:46,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 01:52:46,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 01:52:46,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 01:52:46,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 01:52:46,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 01:52:46,556 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 01:52:46,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 01:52:46,556 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 01:52:46,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 01:52:46,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 01:52:46,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 01:52:46,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 01:52:46,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:52:46,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 01:52:46,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 01:52:46,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 01:52:46,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 01:52:46,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 01:52:46,558 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 01:52:46,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 01:52:46,558 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 01:52:46,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 01:52:46,558 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 01:52:46,558 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 01:52:46,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 01:52:46,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 01:52:46,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 01:52:46,768 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 01:52:46,768 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 01:52:46,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c [2023-04-02 01:52:47,983 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 01:52:48,139 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 01:52:48,139 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c [2023-04-02 01:52:48,144 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0f082cd3/9dd28f9c4bae4f8f95f66c4f7b92ad09/FLAG3c202a317 [2023-04-02 01:52:48,156 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0f082cd3/9dd28f9c4bae4f8f95f66c4f7b92ad09 [2023-04-02 01:52:48,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 01:52:48,160 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 01:52:48,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 01:52:48,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 01:52:48,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 01:52:48,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:52:48" (1/1) ... [2023-04-02 01:52:48,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425f477e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:52:48, skipping insertion in model container [2023-04-02 01:52:48,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:52:48" (1/1) ... [2023-04-02 01:52:48,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 01:52:48,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 01:52:48,294 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/nla-digbench-scaling/cohencu-ll_valuebound2.c[588,601] [2023-04-02 01:52:48,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:52:48,320 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 01:52:48,329 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/nla-digbench-scaling/cohencu-ll_valuebound2.c[588,601] [2023-04-02 01:52:48,339 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:52:48,348 INFO L208 MainTranslator]: Completed translation [2023-04-02 01:52:48,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:52:48 WrapperNode [2023-04-02 01:52:48,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 01:52:48,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 01:52:48,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 01:52:48,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 01:52:48,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:52:48" (1/1) ... [2023-04-02 01:52:48,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:52:48" (1/1) ... [2023-04-02 01:52:48,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:52:48" (1/1) ... [2023-04-02 01:52:48,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:52:48" (1/1) ... [2023-04-02 01:52:48,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:52:48" (1/1) ... [2023-04-02 01:52:48,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:52:48" (1/1) ... [2023-04-02 01:52:48,368 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:52:48" (1/1) ... [2023-04-02 01:52:48,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:52:48" (1/1) ... [2023-04-02 01:52:48,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 01:52:48,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 01:52:48,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 01:52:48,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 01:52:48,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:52:48" (1/1) ... [2023-04-02 01:52:48,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:52:48,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:52:48,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 01:52:48,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 01:52:48,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 01:52:48,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 01:52:48,441 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 01:52:48,441 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 01:52:48,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 01:52:48,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 01:52:48,442 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 01:52:48,442 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 01:52:48,442 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 01:52:48,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 01:52:48,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2023-04-02 01:52:48,443 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 01:52:48,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 01:52:48,443 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 01:52:48,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 01:52:48,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 01:52:48,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 01:52:48,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 01:52:48,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 01:52:48,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 01:52:48,507 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 01:52:48,509 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 01:52:48,707 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 01:52:48,712 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 01:52:48,712 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 01:52:48,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:52:48 BoogieIcfgContainer [2023-04-02 01:52:48,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 01:52:48,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 01:52:48,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 01:52:48,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 01:52:48,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 01:52:48" (1/3) ... [2023-04-02 01:52:48,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566a6bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:52:48, skipping insertion in model container [2023-04-02 01:52:48,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:52:48" (2/3) ... [2023-04-02 01:52:48,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566a6bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:52:48, skipping insertion in model container [2023-04-02 01:52:48,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:52:48" (3/3) ... [2023-04-02 01:52:48,720 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound2.c [2023-04-02 01:52:48,734 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 01:52:48,734 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 01:52:48,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 01:52:48,776 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;@5089988a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 01:52:48,777 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 01:52:48,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-04-02 01:52:48,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-02 01:52:48,801 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:52:48,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:52:48,802 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:52:48,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:52:48,819 INFO L85 PathProgramCache]: Analyzing trace with hash 503189915, now seen corresponding path program 1 times [2023-04-02 01:52:48,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:52:48,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714241605] [2023-04-02 01:52:48,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:52:48,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:52:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:52:49,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:52:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:52:49,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:52:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:52:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:52:49,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:52:49,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714241605] [2023-04-02 01:52:49,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714241605] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:52:49,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:52:49,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 01:52:49,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618182] [2023-04-02 01:52:49,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:52:49,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 01:52:49,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:52:49,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 01:52:49,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 01:52:49,103 INFO L87 Difference]: Start difference. First operand has 36 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 01:52:49,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:52:49,259 INFO L93 Difference]: Finished difference Result 63 states and 101 transitions. [2023-04-02 01:52:49,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 01:52:49,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-04-02 01:52:49,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:52:49,269 INFO L225 Difference]: With dead ends: 63 [2023-04-02 01:52:49,270 INFO L226 Difference]: Without dead ends: 31 [2023-04-02 01:52:49,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 01:52:49,280 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:52:49,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 10 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:52:49,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-04-02 01:52:49,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-04-02 01:52:49,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 01:52:49,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2023-04-02 01:52:49,346 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 17 [2023-04-02 01:52:49,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:52:49,347 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2023-04-02 01:52:49,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 01:52:49,347 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2023-04-02 01:52:49,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-02 01:52:49,348 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:52:49,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:52:49,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 01:52:49,348 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:52:49,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:52:49,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1171868123, now seen corresponding path program 1 times [2023-04-02 01:52:49,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:52:49,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59863059] [2023-04-02 01:52:49,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:52:49,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:52:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:52:49,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:52:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:52:49,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:52:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:52:49,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:52:49,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:52:49,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59863059] [2023-04-02 01:52:49,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59863059] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:52:49,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:52:49,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 01:52:49,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847785256] [2023-04-02 01:52:49,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:52:49,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 01:52:49,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:52:49,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 01:52:49,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 01:52:49,613 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 01:52:49,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:52:49,779 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2023-04-02 01:52:49,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 01:52:49,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-04-02 01:52:49,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:52:49,780 INFO L225 Difference]: With dead ends: 37 [2023-04-02 01:52:49,780 INFO L226 Difference]: Without dead ends: 35 [2023-04-02 01:52:49,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-04-02 01:52:49,782 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 24 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:52:49,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 22 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:52:49,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-04-02 01:52:49,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-04-02 01:52:49,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 01:52:49,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2023-04-02 01:52:49,795 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 17 [2023-04-02 01:52:49,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:52:49,795 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2023-04-02 01:52:49,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 01:52:49,795 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2023-04-02 01:52:49,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-02 01:52:49,796 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:52:49,796 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:52:49,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 01:52:49,797 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:52:49,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:52:49,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1781524074, now seen corresponding path program 1 times [2023-04-02 01:52:49,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:52:49,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505923365] [2023-04-02 01:52:49,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:52:49,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:52:49,808 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 01:52:49,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [260435057] [2023-04-02 01:52:49,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:52:49,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:52:49,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:52:49,812 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:52:49,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 01:52:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:52:49,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 17 conjunts are in the unsatisfiable core [2023-04-02 01:52:49,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:52:49,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:52:49,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:52:50,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:52:50,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:52:50,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505923365] [2023-04-02 01:52:50,134 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 01:52:50,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260435057] [2023-04-02 01:52:50,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260435057] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:52:50,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 01:52:50,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-04-02 01:52:50,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655159962] [2023-04-02 01:52:50,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 01:52:50,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 01:52:50,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:52:50,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 01:52:50,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-04-02 01:52:50,136 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-02 01:52:50,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:52:50,458 INFO L93 Difference]: Finished difference Result 60 states and 79 transitions. [2023-04-02 01:52:50,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 01:52:50,459 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 22 [2023-04-02 01:52:50,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:52:50,461 INFO L225 Difference]: With dead ends: 60 [2023-04-02 01:52:50,461 INFO L226 Difference]: Without dead ends: 58 [2023-04-02 01:52:50,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-04-02 01:52:50,463 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 19 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:52:50,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 109 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:52:50,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-04-02 01:52:50,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2023-04-02 01:52:50,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-04-02 01:52:50,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 73 transitions. [2023-04-02 01:52:50,487 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 73 transitions. Word has length 22 [2023-04-02 01:52:50,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:52:50,487 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 73 transitions. [2023-04-02 01:52:50,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-02 01:52:50,487 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 73 transitions. [2023-04-02 01:52:50,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-04-02 01:52:50,488 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:52:50,488 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:52:50,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 01:52:50,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:52:50,694 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:52:50,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:52:50,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1241120379, now seen corresponding path program 1 times [2023-04-02 01:52:50,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:52:50,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053446556] [2023-04-02 01:52:50,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:52:50,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:52:50,704 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 01:52:50,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1381622222] [2023-04-02 01:52:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:52:50,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:52:50,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:52:50,706 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:52:50,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 01:52:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:52:50,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 17 conjunts are in the unsatisfiable core [2023-04-02 01:52:50,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:52:50,807 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 01:52:50,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:52:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 01:52:50,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:52:50,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053446556] [2023-04-02 01:52:50,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 01:52:50,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381622222] [2023-04-02 01:52:50,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381622222] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:52:50,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 01:52:50,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-04-02 01:52:50,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80355196] [2023-04-02 01:52:50,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 01:52:50,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 01:52:50,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:52:50,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 01:52:50,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-04-02 01:52:50,896 INFO L87 Difference]: Start difference. First operand 55 states and 73 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-04-02 01:52:51,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:52:51,113 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2023-04-02 01:52:51,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 01:52:51,116 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 27 [2023-04-02 01:52:51,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:52:51,117 INFO L225 Difference]: With dead ends: 62 [2023-04-02 01:52:51,117 INFO L226 Difference]: Without dead ends: 60 [2023-04-02 01:52:51,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-04-02 01:52:51,118 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 18 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:52:51,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 123 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:52:51,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-04-02 01:52:51,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2023-04-02 01:52:51,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 29 states have internal predecessors, (30), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-04-02 01:52:51,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 76 transitions. [2023-04-02 01:52:51,172 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 76 transitions. Word has length 27 [2023-04-02 01:52:51,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:52:51,172 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 76 transitions. [2023-04-02 01:52:51,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-04-02 01:52:51,172 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 76 transitions. [2023-04-02 01:52:51,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-04-02 01:52:51,173 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:52:51,173 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:52:51,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 01:52:51,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-04-02 01:52:51,382 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:52:51,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:52:51,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1598126198, now seen corresponding path program 1 times [2023-04-02 01:52:51,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:52:51,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184463974] [2023-04-02 01:52:51,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:52:51,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:52:51,391 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 01:52:51,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907606203] [2023-04-02 01:52:51,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:52:51,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:52:51,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:52:51,397 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:52:51,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 01:52:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:52:51,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-02 01:52:51,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:52:51,507 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-02 01:52:51,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:52:51,921 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-02 01:52:51,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:52:51,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184463974] [2023-04-02 01:52:51,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 01:52:51,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907606203] [2023-04-02 01:52:51,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907606203] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:52:51,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 01:52:51,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-04-02 01:52:51,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086708239] [2023-04-02 01:52:51,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 01:52:51,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 01:52:51,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:52:51,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 01:52:51,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-04-02 01:52:51,923 INFO L87 Difference]: Start difference. First operand 59 states and 76 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-02 01:52:52,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:52:52,499 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2023-04-02 01:52:52,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 01:52:52,500 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 5 states have call successors, (8) Word has length 32 [2023-04-02 01:52:52,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:52:52,501 INFO L225 Difference]: With dead ends: 75 [2023-04-02 01:52:52,501 INFO L226 Difference]: Without dead ends: 66 [2023-04-02 01:52:52,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-04-02 01:52:52,502 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 21 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 01:52:52,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 109 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 01:52:52,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-04-02 01:52:52,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-04-02 01:52:52,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 36 states have internal predecessors, (36), 22 states have call successors, (22), 10 states have call predecessors, (22), 9 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-04-02 01:52:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2023-04-02 01:52:52,522 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 32 [2023-04-02 01:52:52,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:52:52,523 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2023-04-02 01:52:52,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-02 01:52:52,523 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2023-04-02 01:52:52,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-02 01:52:52,524 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:52:52,524 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:52:52,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 01:52:52,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:52:52,731 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:52:52,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:52:52,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1130038122, now seen corresponding path program 1 times [2023-04-02 01:52:52,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:52:52,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85962693] [2023-04-02 01:52:52,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:52:52,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:52:52,741 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 01:52:52,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [249911330] [2023-04-02 01:52:52,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:52:52,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:52:52,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:52:52,742 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:52:52,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 01:52:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:52:52,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-02 01:52:52,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:52:52,925 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-04-02 01:52:52,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:52:53,058 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-04-02 01:52:53,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:52:53,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85962693] [2023-04-02 01:52:53,059 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 01:52:53,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249911330] [2023-04-02 01:52:53,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249911330] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:52:53,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 01:52:53,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-04-02 01:52:53,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667829463] [2023-04-02 01:52:53,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 01:52:53,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 01:52:53,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:52:53,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 01:52:53,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-04-02 01:52:53,065 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 11 states have internal predecessors, (27), 7 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) [2023-04-02 01:52:55,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:52:55,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:52:55,430 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2023-04-02 01:52:55,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 01:52:55,430 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 11 states have internal predecessors, (27), 7 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) Word has length 54 [2023-04-02 01:52:55,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:52:55,432 INFO L225 Difference]: With dead ends: 90 [2023-04-02 01:52:55,432 INFO L226 Difference]: Without dead ends: 88 [2023-04-02 01:52:55,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-04-02 01:52:55,433 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 19 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:52:55,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 159 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 283 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2023-04-02 01:52:55,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-04-02 01:52:55,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2023-04-02 01:52:55,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 48 states have internal predecessors, (48), 29 states have call successors, (29), 13 states have call predecessors, (29), 12 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2023-04-02 01:52:55,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 104 transitions. [2023-04-02 01:52:55,459 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 104 transitions. Word has length 54 [2023-04-02 01:52:55,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:52:55,460 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 104 transitions. [2023-04-02 01:52:55,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 11 states have internal predecessors, (27), 7 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) [2023-04-02 01:52:55,460 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 104 transitions. [2023-04-02 01:52:55,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-04-02 01:52:55,461 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:52:55,461 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:52:55,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 01:52:55,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:52:55,667 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:52:55,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:52:55,668 INFO L85 PathProgramCache]: Analyzing trace with hash -389057674, now seen corresponding path program 2 times [2023-04-02 01:52:55,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:52:55,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834316284] [2023-04-02 01:52:55,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:52:55,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:52:55,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 01:52:55,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768643641] [2023-04-02 01:52:55,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:52:55,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:52:55,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:52:55,679 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:52:55,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 01:52:55,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:52:55,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:52:55,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-02 01:52:55,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:52:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-04-02 01:52:55,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:52:56,054 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-04-02 01:52:56,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:52:56,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834316284] [2023-04-02 01:52:56,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 01:52:56,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768643641] [2023-04-02 01:52:56,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768643641] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:52:56,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 01:52:56,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-04-02 01:52:56,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878917680] [2023-04-02 01:52:56,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 01:52:56,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 01:52:56,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:52:56,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 01:52:56,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-04-02 01:52:56,057 INFO L87 Difference]: Start difference. First operand 87 states and 104 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2023-04-02 01:52:56,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:52:56,454 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2023-04-02 01:52:56,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 01:52:56,454 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) Word has length 64 [2023-04-02 01:52:56,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:52:56,456 INFO L225 Difference]: With dead ends: 94 [2023-04-02 01:52:56,456 INFO L226 Difference]: Without dead ends: 89 [2023-04-02 01:52:56,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-04-02 01:52:56,457 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 19 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:52:56,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 96 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:52:56,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-04-02 01:52:56,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-04-02 01:52:56,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 48 states have (on average 1.0625) internal successors, (51), 51 states have internal predecessors, (51), 27 states have call successors, (27), 14 states have call predecessors, (27), 13 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-04-02 01:52:56,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2023-04-02 01:52:56,488 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 64 [2023-04-02 01:52:56,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:52:56,489 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2023-04-02 01:52:56,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2023-04-02 01:52:56,489 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2023-04-02 01:52:56,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-02 01:52:56,491 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:52:56,491 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:52:56,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 01:52:56,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:52:56,697 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:52:56,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:52:56,697 INFO L85 PathProgramCache]: Analyzing trace with hash -310331719, now seen corresponding path program 1 times [2023-04-02 01:52:56,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:52:56,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950194314] [2023-04-02 01:52:56,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:52:56,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:52:56,714 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 01:52:56,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2139125774] [2023-04-02 01:52:56,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:52:56,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:52:56,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:52:56,716 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:52:56,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 01:52:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:52:56,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 26 conjunts are in the unsatisfiable core [2023-04-02 01:52:56,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:52:57,032 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-04-02 01:52:57,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:52:57,250 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-04-02 01:52:57,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:52:57,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950194314] [2023-04-02 01:52:57,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 01:52:57,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139125774] [2023-04-02 01:52:57,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139125774] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:52:57,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 01:52:57,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2023-04-02 01:52:57,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254172441] [2023-04-02 01:52:57,252 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 01:52:57,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 01:52:57,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:52:57,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 01:52:57,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-04-02 01:52:57,253 INFO L87 Difference]: Start difference. First operand 89 states and 102 transitions. Second operand has 15 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 7 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 8 states have call predecessors, (25), 7 states have call successors, (25) [2023-04-02 01:52:58,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:52:58,068 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2023-04-02 01:52:58,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 01:52:58,068 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 7 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 8 states have call predecessors, (25), 7 states have call successors, (25) Word has length 75 [2023-04-02 01:52:58,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:52:58,070 INFO L225 Difference]: With dead ends: 103 [2023-04-02 01:52:58,070 INFO L226 Difference]: Without dead ends: 101 [2023-04-02 01:52:58,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2023-04-02 01:52:58,081 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 17 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 01:52:58,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 220 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 01:52:58,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-04-02 01:52:58,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2023-04-02 01:52:58,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 55 states have internal predecessors, (56), 32 states have call successors, (32), 15 states have call predecessors, (32), 14 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2023-04-02 01:52:58,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 117 transitions. [2023-04-02 01:52:58,113 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 117 transitions. Word has length 75 [2023-04-02 01:52:58,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:52:58,114 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 117 transitions. [2023-04-02 01:52:58,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 7 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 8 states have call predecessors, (25), 7 states have call successors, (25) [2023-04-02 01:52:58,114 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 117 transitions. [2023-04-02 01:52:58,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-02 01:52:58,115 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:52:58,115 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:52:58,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 01:52:58,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:52:58,322 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:52:58,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:52:58,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1701746168, now seen corresponding path program 1 times [2023-04-02 01:52:58,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:52:58,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314588477] [2023-04-02 01:52:58,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:52:58,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:52:58,344 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 01:52:58,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2065041991] [2023-04-02 01:52:58,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:52:58,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:52:58,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:52:58,347 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:52:58,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 01:52:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:52:58,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 22 conjunts are in the unsatisfiable core [2023-04-02 01:52:58,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:52:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-04-02 01:52:58,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:52:58,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:52:58,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314588477] [2023-04-02 01:52:58,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 01:52:58,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065041991] [2023-04-02 01:52:58,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065041991] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:52:58,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 01:52:58,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-04-02 01:52:58,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109378298] [2023-04-02 01:52:58,821 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 01:52:58,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 01:52:58,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:52:58,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 01:52:58,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-04-02 01:52:58,822 INFO L87 Difference]: Start difference. First operand 99 states and 117 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-02 01:52:59,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:52:59,019 INFO L93 Difference]: Finished difference Result 105 states and 122 transitions. [2023-04-02 01:52:59,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 01:52:59,020 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 80 [2023-04-02 01:52:59,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:52:59,021 INFO L225 Difference]: With dead ends: 105 [2023-04-02 01:52:59,021 INFO L226 Difference]: Without dead ends: 96 [2023-04-02 01:52:59,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-04-02 01:52:59,022 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 12 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:52:59,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 135 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:52:59,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-04-02 01:52:59,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-04-02 01:52:59,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 54 states have internal predecessors, (55), 29 states have call successors, (29), 15 states have call predecessors, (29), 14 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-04-02 01:52:59,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2023-04-02 01:52:59,049 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 80 [2023-04-02 01:52:59,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:52:59,050 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2023-04-02 01:52:59,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-02 01:52:59,050 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2023-04-02 01:52:59,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-02 01:52:59,051 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:52:59,051 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:52:59,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-02 01:52:59,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:52:59,257 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:52:59,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:52:59,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1087104342, now seen corresponding path program 3 times [2023-04-02 01:52:59,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:52:59,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308024823] [2023-04-02 01:52:59,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:52:59,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:52:59,266 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 01:52:59,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2001326928] [2023-04-02 01:52:59,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 01:52:59,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:52:59,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:52:59,270 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:52:59,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-02 01:52:59,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-02 01:52:59,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:52:59,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 35 conjunts are in the unsatisfiable core [2023-04-02 01:52:59,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:52:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-02 01:52:59,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:53:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-02 01:53:00,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:53:00,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308024823] [2023-04-02 01:53:00,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 01:53:00,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001326928] [2023-04-02 01:53:00,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001326928] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:53:00,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 01:53:00,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-04-02 01:53:00,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775786782] [2023-04-02 01:53:00,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 01:53:00,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 01:53:00,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:53:00,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 01:53:00,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-04-02 01:53:00,115 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 13 states have internal predecessors, (31), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) [2023-04-02 01:53:01,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:53:01,722 INFO L93 Difference]: Finished difference Result 118 states and 131 transitions. [2023-04-02 01:53:01,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 01:53:01,722 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 13 states have internal predecessors, (31), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) Word has length 86 [2023-04-02 01:53:01,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:53:01,724 INFO L225 Difference]: With dead ends: 118 [2023-04-02 01:53:01,724 INFO L226 Difference]: Without dead ends: 115 [2023-04-02 01:53:01,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2023-04-02 01:53:01,725 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 21 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:53:01,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 167 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 01:53:01,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-04-02 01:53:01,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2023-04-02 01:53:01,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 64 states have (on average 1.046875) internal successors, (67), 66 states have internal predecessors, (67), 30 states have call successors, (30), 19 states have call predecessors, (30), 18 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-04-02 01:53:01,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 124 transitions. [2023-04-02 01:53:01,754 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 124 transitions. Word has length 86 [2023-04-02 01:53:01,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:53:01,755 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 124 transitions. [2023-04-02 01:53:01,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 13 states have internal predecessors, (31), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) [2023-04-02 01:53:01,755 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 124 transitions. [2023-04-02 01:53:01,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-04-02 01:53:01,756 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:53:01,756 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:53:01,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-02 01:53:01,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-02 01:53:01,962 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:53:01,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:53:01,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1368175293, now seen corresponding path program 2 times [2023-04-02 01:53:01,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:53:01,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049216255] [2023-04-02 01:53:01,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:53:01,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:53:01,971 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 01:53:01,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1108016096] [2023-04-02 01:53:01,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:53:01,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:53:01,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:53:01,973 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:53:01,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-02 01:53:02,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:53:02,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:53:02,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 35 conjunts are in the unsatisfiable core [2023-04-02 01:53:02,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:53:02,280 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 78 proven. 25 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-04-02 01:53:02,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:53:02,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:53:02,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049216255] [2023-04-02 01:53:02,706 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 01:53:02,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108016096] [2023-04-02 01:53:02,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108016096] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:53:02,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 01:53:02,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-04-02 01:53:02,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565394478] [2023-04-02 01:53:02,707 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 01:53:02,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 01:53:02,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:53:02,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 01:53:02,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-04-02 01:53:02,708 INFO L87 Difference]: Start difference. First operand 113 states and 124 transitions. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 6 states have call successors, (19) [2023-04-02 01:53:02,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:53:02,979 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2023-04-02 01:53:02,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 01:53:02,979 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 6 states have call successors, (19) Word has length 107 [2023-04-02 01:53:02,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:53:02,980 INFO L225 Difference]: With dead ends: 119 [2023-04-02 01:53:02,980 INFO L226 Difference]: Without dead ends: 106 [2023-04-02 01:53:02,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-04-02 01:53:02,982 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 12 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:53:02,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 155 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:53:02,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-04-02 01:53:03,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-04-02 01:53:03,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 62 states have internal predecessors, (63), 27 states have call successors, (27), 18 states have call predecessors, (27), 17 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-04-02 01:53:03,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 115 transitions. [2023-04-02 01:53:03,017 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 115 transitions. Word has length 107 [2023-04-02 01:53:03,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:53:03,018 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 115 transitions. [2023-04-02 01:53:03,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 6 states have call successors, (19) [2023-04-02 01:53:03,018 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 115 transitions. [2023-04-02 01:53:03,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-04-02 01:53:03,019 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:53:03,019 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:53:03,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-02 01:53:03,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:53:03,225 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:53:03,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:53:03,225 INFO L85 PathProgramCache]: Analyzing trace with hash -2063139367, now seen corresponding path program 2 times [2023-04-02 01:53:03,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:53:03,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547552466] [2023-04-02 01:53:03,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:53:03,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:53:03,234 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 01:53:03,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621006424] [2023-04-02 01:53:03,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:53:03,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:53:03,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:53:03,236 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:53:03,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-02 01:53:03,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:53:03,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:53:03,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 46 conjunts are in the unsatisfiable core [2023-04-02 01:53:03,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:53:03,635 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 101 proven. 43 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2023-04-02 01:53:03,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:53:09,624 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 122 proven. 1 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2023-04-02 01:53:09,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:53:09,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547552466] [2023-04-02 01:53:09,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 01:53:09,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621006424] [2023-04-02 01:53:09,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621006424] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:53:09,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 01:53:09,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2023-04-02 01:53:09,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234290004] [2023-04-02 01:53:09,625 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 01:53:09,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 01:53:09,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:53:09,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 01:53:09,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-04-02 01:53:09,627 INFO L87 Difference]: Start difference. First operand 106 states and 115 transitions. Second operand has 17 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 10 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2023-04-02 01:53:10,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:53:10,526 INFO L93 Difference]: Finished difference Result 131 states and 146 transitions. [2023-04-02 01:53:10,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 01:53:10,527 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 10 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) Word has length 129 [2023-04-02 01:53:10,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:53:10,528 INFO L225 Difference]: With dead ends: 131 [2023-04-02 01:53:10,528 INFO L226 Difference]: Without dead ends: 129 [2023-04-02 01:53:10,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2023-04-02 01:53:10,529 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 15 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 01:53:10,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 157 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 01:53:10,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-04-02 01:53:10,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 126. [2023-04-02 01:53:10,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 74 states have internal predecessors, (75), 33 states have call successors, (33), 21 states have call predecessors, (33), 20 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2023-04-02 01:53:10,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 139 transitions. [2023-04-02 01:53:10,562 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 139 transitions. Word has length 129 [2023-04-02 01:53:10,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:53:10,562 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 139 transitions. [2023-04-02 01:53:10,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 10 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2023-04-02 01:53:10,563 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 139 transitions. [2023-04-02 01:53:10,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 01:53:10,564 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:53:10,564 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:53:10,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-02 01:53:10,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-02 01:53:10,770 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:53:10,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:53:10,770 INFO L85 PathProgramCache]: Analyzing trace with hash -262683944, now seen corresponding path program 3 times [2023-04-02 01:53:10,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:53:10,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127630383] [2023-04-02 01:53:10,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:53:10,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:53:10,785 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 01:53:10,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281165629] [2023-04-02 01:53:10,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 01:53:10,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:53:10,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:53:10,787 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:53:10,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-02 01:53:10,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-04-02 01:53:10,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:53:10,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 57 conjunts are in the unsatisfiable core [2023-04-02 01:53:10,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:53:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 259 proven. 76 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2023-04-02 01:53:34,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:53:35,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 204 proven. 34 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2023-04-02 01:53:35,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:53:35,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127630383] [2023-04-02 01:53:35,397 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 01:53:35,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281165629] [2023-04-02 01:53:35,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281165629] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:53:35,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 01:53:35,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 23 [2023-04-02 01:53:35,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474771303] [2023-04-02 01:53:35,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 01:53:35,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-02 01:53:35,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:53:35,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-02 01:53:35,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=412, Unknown=1, NotChecked=0, Total=506 [2023-04-02 01:53:35,399 INFO L87 Difference]: Start difference. First operand 126 states and 139 transitions. Second operand has 23 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 16 states have internal predecessors, (37), 13 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2023-04-02 01:53:36,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:53:36,782 INFO L93 Difference]: Finished difference Result 126 states and 139 transitions. [2023-04-02 01:53:36,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 01:53:36,782 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 16 states have internal predecessors, (37), 13 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) Word has length 134 [2023-04-02 01:53:36,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:53:36,783 INFO L225 Difference]: With dead ends: 126 [2023-04-02 01:53:36,783 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 01:53:36,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=148, Invalid=607, Unknown=1, NotChecked=0, Total=756 [2023-04-02 01:53:36,784 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 01:53:36,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 158 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 01:53:36,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 01:53:36,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 01:53:36,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-02 01:53:36,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 01:53:36,786 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134 [2023-04-02 01:53:36,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:53:36,786 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 01:53:36,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 16 states have internal predecessors, (37), 13 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2023-04-02 01:53:36,786 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 01:53:36,786 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 01:53:36,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 01:53:36,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-04-02 01:53:36,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-02 01:53:36,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 01:53:39,680 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2023-04-02 01:53:39,680 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2023-04-02 01:53:39,681 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 8) no Hoare annotation was computed. [2023-04-02 01:53:39,681 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-04-02 01:53:39,681 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2023-04-02 01:53:39,681 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 13) the Hoare annotation is: true [2023-04-02 01:53:39,681 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2023-04-02 01:53:39,681 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 46) the Hoare annotation is: (let ((.cse0 (<= 0 main_~a~0)) (.cse1 (<= main_~a~0 2))) (or (and (= (+ (* main_~n~0 6) 6) main_~z~0) .cse0 (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) .cse1 (= (* main_~n~0 main_~n~0 main_~n~0) main_~x~0) (<= main_~n~0 main_~a~0)) (and (= main_~z~0 12) (= 7 main_~y~0) (= main_~x~0 1) .cse0 (= main_~n~0 1) .cse1) (and (= main_~n~0 3) (= main_~z~0 24) (<= 2 main_~a~0) (= main_~x~0 27) .cse1 (= main_~y~0 37)) (and (= main_~a~0 1) (= main_~z~0 18) (= main_~n~0 2) (= 19 main_~y~0) (= main_~x~0 8)))) [2023-04-02 01:53:39,681 INFO L895 garLoopResultBuilder]: At program point L33-3(lines 33 46) the Hoare annotation is: (or (and (= main_~z~0 12) (= 7 main_~y~0) (= main_~x~0 1) (<= 0 main_~a~0) (= main_~n~0 1) (<= main_~a~0 0)) (and (= main_~n~0 3) (= main_~z~0 24) (<= 2 main_~a~0) (= main_~x~0 27) (<= main_~a~0 2) (= main_~y~0 37)) (and (= main_~x~0 0) (= main_~n~0 0) (= main_~y~0 1) (= main_~z~0 6)) (and (= main_~a~0 1) (= main_~z~0 18) (= main_~n~0 2) (= 19 main_~y~0) (= main_~x~0 8))) [2023-04-02 01:53:39,681 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 22 56) no Hoare annotation was computed. [2023-04-02 01:53:39,681 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (and (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) (= (* main_~n~0 main_~n~0 main_~n~0) main_~x~0)) [2023-04-02 01:53:39,682 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (<= 0 main_~a~0)) (.cse1 (<= main_~a~0 2))) (or (and (= main_~z~0 18) (= main_~n~0 2) .cse0 .cse1 (= 19 main_~y~0) (= main_~x~0 8)) (and (= main_~x~0 0) (= main_~n~0 0) (= main_~y~0 1) (= main_~z~0 6)) (let ((.cse2 (div main_~z~0 6)) (.cse3 (* main_~y~0 12))) (and (<= .cse2 (+ main_~a~0 2)) (< (+ main_~a~0 1) .cse2) (= (+ (* main_~z~0 main_~z~0) 12) (+ .cse3 (* main_~z~0 6))) (= (+ (* main_~x~0 18) .cse3 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) (= (+ (* main_~n~0 6) 6) main_~z~0) .cse0 .cse1)) (and (= main_~z~0 12) (= 7 main_~y~0) (= main_~x~0 1) (= main_~n~0 1)))) [2023-04-02 01:53:39,682 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (or (and (= main_~x~0 0) (= main_~n~0 0) (= main_~y~0 1) (= main_~z~0 6)) (let ((.cse0 (* main_~y~0 12))) (and (= (+ (* main_~z~0 main_~z~0) 12) (+ .cse0 (* main_~z~0 6))) (= (+ (* main_~x~0 18) .cse0 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) (= (+ (* main_~n~0 6) 6) main_~z~0) (<= 0 main_~a~0) (<= main_~a~0 2) (= (* main_~z~0 main_~x~0) (+ (* main_~x~0 12) (* (* main_~a~0 main_~x~0) 6)))))) [2023-04-02 01:53:39,682 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 22 56) no Hoare annotation was computed. [2023-04-02 01:53:39,682 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 22 56) the Hoare annotation is: true [2023-04-02 01:53:39,682 INFO L899 garLoopResultBuilder]: For program point L38(lines 33 46) no Hoare annotation was computed. [2023-04-02 01:53:39,682 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (and (or (<= main_~n~0 main_~a~0) (= (* main_~z~0 main_~x~0) (+ (* main_~x~0 12) (* (* main_~a~0 main_~x~0) 6)))) (= (+ (* main_~n~0 6) 6) main_~z~0) (<= 0 main_~a~0) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) (<= main_~a~0 2) (= (* main_~n~0 main_~n~0 main_~n~0) main_~x~0)) [2023-04-02 01:53:39,682 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (<= 0 main_~a~0)) (.cse1 (<= main_~a~0 2))) (or (and (= (+ (* main_~n~0 6) 6) main_~z~0) .cse0 (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) .cse1 (= (* main_~n~0 main_~n~0 main_~n~0) main_~x~0) (<= main_~n~0 main_~a~0)) (and (= main_~z~0 12) (= 7 main_~y~0) (= main_~x~0 1) .cse0 (= main_~n~0 1) .cse1) (and (= main_~n~0 3) (= main_~z~0 24) (<= 2 main_~a~0) (= main_~x~0 27) .cse1 (= main_~y~0 37)) (and (= main_~a~0 1) (= main_~z~0 18) (= main_~n~0 2) (= 19 main_~y~0) (= main_~x~0 8)))) [2023-04-02 01:53:39,682 INFO L895 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (let ((.cse0 (<= 0 main_~a~0)) (.cse1 (<= main_~a~0 2))) (or (and (= (+ (* main_~n~0 6) 6) main_~z~0) .cse0 (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) .cse1 (= (* main_~n~0 main_~n~0 main_~n~0) main_~x~0) (<= main_~n~0 main_~a~0)) (and (= main_~z~0 12) (= 7 main_~y~0) (= main_~x~0 1) .cse0 (= main_~n~0 1) .cse1) (and (= main_~n~0 3) (= main_~z~0 24) (<= 2 main_~a~0) (= main_~x~0 27) .cse1 (= main_~y~0 37)) (and (= main_~a~0 1) (= main_~z~0 18) (= main_~n~0 2) (= 19 main_~y~0) (= main_~x~0 8)))) [2023-04-02 01:53:39,682 INFO L895 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (or (and (< 0 (+ 32769 main_~a~0)) (< main_~a~0 0)) (and (<= main_~a~0 32767) (<= 0 main_~a~0))) [2023-04-02 01:53:39,682 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2023-04-02 01:53:39,682 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2023-04-02 01:53:39,683 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (and (= (+ (* main_~z~0 main_~z~0) 12) (+ (* main_~y~0 12) (* main_~z~0 6))) (= (+ (* main_~n~0 6) 6) main_~z~0) (= (* main_~n~0 main_~n~0 main_~n~0) main_~x~0)) [2023-04-02 01:53:39,683 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (or (and (= main_~x~0 0) (= main_~n~0 0) (= main_~y~0 1) (= main_~z~0 6)) (let ((.cse0 (div main_~z~0 6)) (.cse1 (* main_~y~0 12))) (and (<= .cse0 (+ main_~a~0 2)) (< (+ main_~a~0 1) .cse0) (= (+ (* main_~z~0 main_~z~0) 12) (+ .cse1 (* main_~z~0 6))) (= (+ (* main_~x~0 18) .cse1 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) (= (+ (* main_~n~0 6) 6) main_~z~0) (<= 0 main_~a~0) (<= main_~a~0 2)))) [2023-04-02 01:53:39,683 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (and (or (<= main_~n~0 main_~a~0) (= (* main_~z~0 main_~x~0) (+ (* main_~x~0 12) (* (* main_~a~0 main_~x~0) 6)))) (= (+ (* main_~n~0 6) 6) main_~z~0) (<= 0 main_~a~0) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) (<= main_~a~0 2) (= (* main_~n~0 main_~n~0 main_~n~0) main_~x~0)) [2023-04-02 01:53:39,683 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (and (or (<= main_~n~0 main_~a~0) (= (* main_~z~0 main_~x~0) (+ (* main_~x~0 12) (* (* main_~a~0 main_~x~0) 6)))) (= (+ (* main_~n~0 6) 6) main_~z~0) (<= 0 main_~a~0) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) (<= main_~a~0 2) (= (* main_~n~0 main_~n~0 main_~n~0) main_~x~0)) [2023-04-02 01:53:39,683 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2023-04-02 01:53:39,683 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2023-04-02 01:53:39,683 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 01:53:39,683 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 01:53:39,683 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-02 01:53:39,683 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 01:53:39,683 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 01:53:39,683 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-04-02 01:53:39,683 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-04-02 01:53:39,683 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-04-02 01:53:39,684 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-04-02 01:53:39,684 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-04-02 01:53:39,684 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-04-02 01:53:39,686 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1] [2023-04-02 01:53:39,687 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 01:53:39,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 01:53:39 BoogieIcfgContainer [2023-04-02 01:53:39,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 01:53:39,700 INFO L158 Benchmark]: Toolchain (without parser) took 51540.42ms. Allocated memory was 272.6MB in the beginning and 347.1MB in the end (delta: 74.4MB). Free memory was 224.1MB in the beginning and 134.3MB in the end (delta: 89.9MB). Peak memory consumption was 187.6MB. Max. memory is 8.0GB. [2023-04-02 01:53:39,700 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 137.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 01:53:39,700 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.66ms. Allocated memory is still 272.6MB. Free memory was 223.9MB in the beginning and 213.0MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-02 01:53:39,701 INFO L158 Benchmark]: Boogie Preprocessor took 20.72ms. Allocated memory is still 272.6MB. Free memory was 213.0MB in the beginning and 211.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-02 01:53:39,702 INFO L158 Benchmark]: RCFGBuilder took 343.01ms. Allocated memory is still 272.6MB. Free memory was 211.6MB in the beginning and 199.4MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-02 01:53:39,702 INFO L158 Benchmark]: TraceAbstraction took 50984.46ms. Allocated memory was 272.6MB in the beginning and 347.1MB in the end (delta: 74.4MB). Free memory was 198.7MB in the beginning and 134.3MB in the end (delta: 64.4MB). Peak memory consumption was 162.5MB. Max. memory is 8.0GB. [2023-04-02 01:53:39,703 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 137.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 187.66ms. Allocated memory is still 272.6MB. Free memory was 223.9MB in the beginning and 213.0MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.72ms. Allocated memory is still 272.6MB. Free memory was 213.0MB in the beginning and 211.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 343.01ms. Allocated memory is still 272.6MB. Free memory was 211.6MB in the beginning and 199.4MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 50984.46ms. Allocated memory was 272.6MB in the beginning and 347.1MB in the end (delta: 74.4MB). Free memory was 198.7MB in the beginning and 134.3MB in the end (delta: 64.4MB). Peak memory consumption was 162.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 50.9s, OverallIterations: 13, TraceHistogramMax: 23, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 9.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 348 SdHoareTripleChecker+Valid, 7.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 240 mSDsluCounter, 1620 SdHoareTripleChecker+Invalid, 7.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1269 mSDsCounter, 338 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3051 IncrementalHoareTripleChecker+Invalid, 3390 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 338 mSolverCounterUnsat, 351 mSDtfsCounter, 3051 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1567 GetRequests, 1376 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 12.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=12, InterpolantAutomatonStates: 125, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 12 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 19 LocationsWithAnnotation, 76 PreInvPairs, 128 NumberOfFragments, 820 HoareAnnotationTreeSize, 76 FomulaSimplifications, 6106 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 19 FomulaSimplificationsInter, 1614 FormulaSimplificationTreeSizeReductionInter, 2.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 34.9s InterpolantComputationTime, 844 NumberOfCodeBlocks, 732 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1445 ConstructedInterpolants, 1 QuantifiedInterpolants, 6264 SizeOfPredicates, 44 NumberOfNonLiveVariables, 1747 ConjunctsInSsa, 320 ConjunctsInUnsatCore, 22 InterpolantComputations, 2 PerfectInterpolantSequences, 6192/6566 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (((((((n * 6 + 6 == z && 0 <= a) && 3 * (n * n) + n * 3 + 1 == y) && a <= 2) && n * n * n == x) && n <= a) || (((((z == 12 && 7 == y) && x == 1) && 0 <= a) && n == 1) && a <= 2)) || (((((n == 3 && z == 24) && 2 <= a) && x == 27) && a <= 2) && y == 37)) || ((((a == 1 && z == 18) && n == 2) && 19 == y) && x == 8) RESULT: Ultimate proved your program to be correct! [2023-04-02 01:53:39,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...