/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/ps5-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 02:43:22,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 02:43:22,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 02:43:22,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 02:43:22,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 02:43:22,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 02:43:22,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 02:43:22,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 02:43:22,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 02:43:22,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 02:43:22,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 02:43:22,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 02:43:22,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 02:43:22,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 02:43:22,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 02:43:22,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 02:43:22,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 02:43:22,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 02:43:22,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 02:43:22,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 02:43:22,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 02:43:22,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 02:43:22,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 02:43:22,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 02:43:22,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 02:43:22,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 02:43:22,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 02:43:22,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 02:43:22,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 02:43:22,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 02:43:22,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 02:43:22,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 02:43:22,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 02:43:22,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 02:43:22,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 02:43:22,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 02:43:22,801 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 02:43:22,834 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 02:43:22,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 02:43:22,835 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 02:43:22,835 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 02:43:22,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 02:43:22,837 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 02:43:22,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 02:43:22,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 02:43:22,838 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 02:43:22,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 02:43:22,839 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 02:43:22,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 02:43:22,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 02:43:22,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 02:43:22,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 02:43:22,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 02:43:22,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 02:43:22,840 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 02:43:22,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 02:43:22,840 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 02:43:22,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 02:43:22,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 02:43:22,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 02:43:22,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 02:43:22,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 02:43:22,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 02:43:22,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 02:43:22,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 02:43:22,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 02:43:22,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 02:43:22,842 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 02:43:22,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 02:43:22,842 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 02:43:22,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 02:43:22,843 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 02:43:22,843 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 02:43:23,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 02:43:23,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 02:43:23,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 02:43:23,097 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 02:43:23,098 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 02:43:23,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c [2023-04-02 02:43:24,257 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 02:43:24,453 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 02:43:24,453 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c [2023-04-02 02:43:24,457 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23ef7f5f2/e1a9e414d5f246a5a6df670b388ce2f2/FLAGce3442e78 [2023-04-02 02:43:24,469 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23ef7f5f2/e1a9e414d5f246a5a6df670b388ce2f2 [2023-04-02 02:43:24,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 02:43:24,477 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 02:43:24,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 02:43:24,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 02:43:24,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 02:43:24,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 02:43:24" (1/1) ... [2023-04-02 02:43:24,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d9299ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:43:24, skipping insertion in model container [2023-04-02 02:43:24,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 02:43:24" (1/1) ... [2023-04-02 02:43:24,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 02:43:24,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 02:43:24,611 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/ps5-ll_valuebound2.c[458,471] [2023-04-02 02:43:24,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 02:43:24,634 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 02:43:24,643 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/ps5-ll_valuebound2.c[458,471] [2023-04-02 02:43:24,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 02:43:24,666 INFO L208 MainTranslator]: Completed translation [2023-04-02 02:43:24,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:43:24 WrapperNode [2023-04-02 02:43:24,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 02:43:24,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 02:43:24,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 02:43:24,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 02:43:24,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:43:24" (1/1) ... [2023-04-02 02:43:24,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:43:24" (1/1) ... [2023-04-02 02:43:24,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:43:24" (1/1) ... [2023-04-02 02:43:24,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:43:24" (1/1) ... [2023-04-02 02:43:24,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:43:24" (1/1) ... [2023-04-02 02:43:24,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:43:24" (1/1) ... [2023-04-02 02:43:24,689 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:43:24" (1/1) ... [2023-04-02 02:43:24,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:43:24" (1/1) ... [2023-04-02 02:43:24,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 02:43:24,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 02:43:24,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 02:43:24,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 02:43:24,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:43:24" (1/1) ... [2023-04-02 02:43:24,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 02:43:24,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:43:24,730 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 02:43:24,737 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 02:43:24,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 02:43:24,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 02:43:24,760 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 02:43:24,760 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 02:43:24,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 02:43:24,760 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 02:43:24,760 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 02:43:24,760 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 02:43:24,761 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 02:43:24,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 02:43:24,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2023-04-02 02:43:24,761 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 02:43:24,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 02:43:24,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 02:43:24,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 02:43:24,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 02:43:24,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 02:43:24,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 02:43:24,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 02:43:24,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 02:43:24,817 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 02:43:24,819 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 02:43:24,954 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 02:43:24,959 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 02:43:24,959 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 02:43:24,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 02:43:24 BoogieIcfgContainer [2023-04-02 02:43:24,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 02:43:24,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 02:43:24,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 02:43:24,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 02:43:24,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 02:43:24" (1/3) ... [2023-04-02 02:43:24,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263fb97f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 02:43:24, skipping insertion in model container [2023-04-02 02:43:24,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:43:24" (2/3) ... [2023-04-02 02:43:24,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263fb97f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 02:43:24, skipping insertion in model container [2023-04-02 02:43:24,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 02:43:24" (3/3) ... [2023-04-02 02:43:24,967 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound2.c [2023-04-02 02:43:24,998 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 02:43:24,998 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 02:43:25,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 02:43:25,054 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;@f0ab91d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 02:43:25,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 02:43:25,057 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 02:43:25,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-02 02:43:25,064 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:43:25,064 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:43:25,065 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:43:25,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:43:25,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1098891495, now seen corresponding path program 1 times [2023-04-02 02:43:25,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:43:25,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775680410] [2023-04-02 02:43:25,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:43:25,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:43:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:43:25,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:43:25,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775680410] [2023-04-02 02:43:25,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-02 02:43:25,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740656891] [2023-04-02 02:43:25,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:43:25,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:43:25,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:43:25,189 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 02:43:25,203 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 02:43:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:43:25,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2023-04-02 02:43:25,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:43:25,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 02:43:25,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:43:25,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740656891] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:43:25,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:43:25,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 02:43:25,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932989342] [2023-04-02 02:43:25,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:43:25,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 02:43:25,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:43:25,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 02:43:25,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 02:43:25,353 INFO L87 Difference]: Start difference. First operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 02:43:25,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:43:25,384 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2023-04-02 02:43:25,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 02:43:25,386 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2023-04-02 02:43:25,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:43:25,391 INFO L225 Difference]: With dead ends: 51 [2023-04-02 02:43:25,391 INFO L226 Difference]: Without dead ends: 24 [2023-04-02 02:43:25,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 02:43:25,397 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:43:25,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:43:25,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-04-02 02:43:25,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-04-02 02:43:25,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 02:43:25,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-04-02 02:43:25,427 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 22 [2023-04-02 02:43:25,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:43:25,428 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-04-02 02:43:25,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 02:43:25,428 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-04-02 02:43:25,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-02 02:43:25,430 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:43:25,430 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:43:25,440 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 02:43:25,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-04-02 02:43:25,638 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:43:25,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:43:25,639 INFO L85 PathProgramCache]: Analyzing trace with hash 769620075, now seen corresponding path program 1 times [2023-04-02 02:43:25,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:43:25,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956228103] [2023-04-02 02:43:25,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:43:25,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:43:25,661 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:43:25,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067753814] [2023-04-02 02:43:25,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:43:25,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:43:25,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:43:25,666 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 02:43:25,669 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 02:43:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:43:25,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-02 02:43:25,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:43:25,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 02:43:25,863 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:43:25,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:43:25,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956228103] [2023-04-02 02:43:25,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:43:25,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067753814] [2023-04-02 02:43:25,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067753814] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:43:25,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:43:25,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 02:43:25,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407868764] [2023-04-02 02:43:25,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:43:25,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 02:43:25,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:43:25,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 02:43:25,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 02:43:25,866 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 02:43:25,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:43:25,963 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2023-04-02 02:43:25,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 02:43:25,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2023-04-02 02:43:25,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:43:25,965 INFO L225 Difference]: With dead ends: 35 [2023-04-02 02:43:25,965 INFO L226 Difference]: Without dead ends: 31 [2023-04-02 02:43:25,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-02 02:43:25,966 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 02:43:25,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 91 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 02:43:25,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-04-02 02:43:25,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-04-02 02:43:25,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 02:43:25,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2023-04-02 02:43:25,983 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 22 [2023-04-02 02:43:25,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:43:25,983 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2023-04-02 02:43:25,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 02:43:25,984 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2023-04-02 02:43:25,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-04-02 02:43:25,985 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:43:25,986 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:43:25,994 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 02:43:26,191 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,SelfDestructingSolverStorable1 [2023-04-02 02:43:26,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:43:26,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:43:26,192 INFO L85 PathProgramCache]: Analyzing trace with hash 645812411, now seen corresponding path program 1 times [2023-04-02 02:43:26,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:43:26,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295299764] [2023-04-02 02:43:26,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:43:26,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:43:26,219 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:43:26,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [765666963] [2023-04-02 02:43:26,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:43:26,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:43:26,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:43:26,225 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 02:43:26,227 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 02:43:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:43:26,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-02 02:43:26,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:43:26,414 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 02:43:26,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:43:26,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 02:43:26,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:43:26,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295299764] [2023-04-02 02:43:26,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:43:26,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765666963] [2023-04-02 02:43:26,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765666963] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:43:26,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 02:43:26,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2023-04-02 02:43:26,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327505357] [2023-04-02 02:43:26,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 02:43:26,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 02:43:26,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:43:26,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 02:43:26,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-02 02:43:26,567 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-02 02:43:26,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:43:26,689 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2023-04-02 02:43:26,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 02:43:26,691 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 29 [2023-04-02 02:43:26,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:43:26,694 INFO L225 Difference]: With dead ends: 42 [2023-04-02 02:43:26,694 INFO L226 Difference]: Without dead ends: 38 [2023-04-02 02:43:26,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-04-02 02:43:26,698 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 15 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 02:43:26,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 159 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 02:43:26,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-04-02 02:43:26,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2023-04-02 02:43:26,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 02:43:26,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2023-04-02 02:43:26,715 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 29 [2023-04-02 02:43:26,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:43:26,716 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2023-04-02 02:43:26,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-02 02:43:26,716 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2023-04-02 02:43:26,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-04-02 02:43:26,719 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:43:26,719 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:43:26,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-02 02:43:26,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:43:26,924 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:43:26,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:43:26,925 INFO L85 PathProgramCache]: Analyzing trace with hash 463554397, now seen corresponding path program 1 times [2023-04-02 02:43:26,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:43:26,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126209831] [2023-04-02 02:43:26,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:43:26,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:43:26,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:43:26,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958798216] [2023-04-02 02:43:26,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:43:26,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:43:26,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:43:26,950 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 02:43:26,951 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 02:43:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:43:26,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 20 conjunts are in the unsatisfiable core [2023-04-02 02:43:26,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:43:27,126 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 02:43:27,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:43:31,223 WARN L839 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0)) (= (* c_main_~y~0 c_main_~k~0) (* c_main_~y~0 c_main_~y~0))) is different from false [2023-04-02 02:43:51,382 WARN L861 $PredicateComparison]: unable to prove that (or (forall ((v_main_~y~0_BEFORE_CALL_9 Int) (v_main_~k~0_BEFORE_CALL_4 Int)) (or (= (mod (+ (* v_main_~y~0_BEFORE_CALL_9 29) (* v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 15) (* v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 6) (* v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 10)) 30) 0) (= (* v_main_~y~0_BEFORE_CALL_9 v_main_~k~0_BEFORE_CALL_4) (* v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9)))) (not (= |c___VERIFIER_assert_#in~cond| 0))) is different from true [2023-04-02 02:44:11,755 WARN L861 $PredicateComparison]: unable to prove that (or (forall ((v_main_~y~0_BEFORE_CALL_9 Int) (v_main_~k~0_BEFORE_CALL_4 Int)) (or (= (mod (+ (* v_main_~y~0_BEFORE_CALL_9 29) (* v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 15) (* v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 6) (* v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 10)) 30) 0) (= (* v_main_~y~0_BEFORE_CALL_9 v_main_~k~0_BEFORE_CALL_4) (* v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9)))) (not (= |c___VERIFIER_assert_#in~cond| 0)) (= c___VERIFIER_assert_~cond 0)) is different from true [2023-04-02 02:44:30,320 WARN L839 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0)) (forall ((main_~k~0 Int)) (or (< (+ c_main_~c~0 1) main_~k~0) (<= main_~k~0 c_main_~c~0) (= (+ (* main_~k~0 c_main_~y~0) main_~k~0) (+ (* 2 c_main_~y~0) (* c_main_~y~0 c_main_~y~0) 1))))) is different from false [2023-04-02 02:44:32,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:44:32,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126209831] [2023-04-02 02:44:32,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:44:32,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958798216] [2023-04-02 02:44:32,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958798216] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 02:44:32,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 02:44:32,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-04-02 02:44:32,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580337883] [2023-04-02 02:44:32,368 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 02:44:32,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 02:44:32,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:44:32,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 02:44:32,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=105, Unknown=6, NotChecked=92, Total=240 [2023-04-02 02:44:32,370 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 02:44:32,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:44:32,493 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2023-04-02 02:44:32,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 02:44:32,494 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 40 [2023-04-02 02:44:32,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:44:32,495 INFO L225 Difference]: With dead ends: 42 [2023-04-02 02:44:32,495 INFO L226 Difference]: Without dead ends: 36 [2023-04-02 02:44:32,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=56, Invalid=164, Unknown=6, NotChecked=116, Total=342 [2023-04-02 02:44:32,496 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 02:44:32,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 137 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 02:44:32,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-04-02 02:44:32,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-04-02 02:44:32,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 02:44:32,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2023-04-02 02:44:32,504 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 40 [2023-04-02 02:44:32,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:44:32,505 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2023-04-02 02:44:32,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 02:44:32,505 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2023-04-02 02:44:32,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-02 02:44:32,506 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:44:32,506 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:44:32,514 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 02:44:32,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:44:32,707 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:44:32,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:44:32,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1886956461, now seen corresponding path program 2 times [2023-04-02 02:44:32,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:44:32,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759438525] [2023-04-02 02:44:32,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:44:32,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:44:32,720 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:44:32,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692460660] [2023-04-02 02:44:32,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 02:44:32,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:44:32,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:44:32,741 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 02:44:32,743 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 02:44:32,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 02:44:32,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 02:44:32,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 24 conjunts are in the unsatisfiable core [2023-04-02 02:44:32,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:44:33,023 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-04-02 02:44:33,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:44:33,232 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-02 02:44:33,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:44:33,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759438525] [2023-04-02 02:44:33,233 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:44:33,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692460660] [2023-04-02 02:44:33,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692460660] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:44:33,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 02:44:33,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2023-04-02 02:44:33,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743298817] [2023-04-02 02:44:33,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 02:44:33,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 02:44:33,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:44:33,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 02:44:33,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-04-02 02:44:33,235 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2023-04-02 02:44:33,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:44:33,633 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2023-04-02 02:44:33,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 02:44:33,633 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) Word has length 47 [2023-04-02 02:44:33,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:44:33,634 INFO L225 Difference]: With dead ends: 55 [2023-04-02 02:44:33,634 INFO L226 Difference]: Without dead ends: 47 [2023-04-02 02:44:33,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2023-04-02 02:44:33,636 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 19 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 02:44:33,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 199 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 02:44:33,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-04-02 02:44:33,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2023-04-02 02:44:33,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 12 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 02:44:33,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2023-04-02 02:44:33,650 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 47 [2023-04-02 02:44:33,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:44:33,650 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2023-04-02 02:44:33,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2023-04-02 02:44:33,651 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2023-04-02 02:44:33,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 02:44:33,652 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:44:33,652 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:44:33,661 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 02:44:33,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:44:33,860 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:44:33,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:44:33,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1082774365, now seen corresponding path program 3 times [2023-04-02 02:44:33,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:44:33,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195188743] [2023-04-02 02:44:33,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:44:33,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:44:33,883 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:44:33,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [405864134] [2023-04-02 02:44:33,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 02:44:33,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:44:33,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:44:33,884 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 02:44:33,886 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 02:44:38,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-04-02 02:44:38,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 02:44:38,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-02 02:44:38,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:44:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 95 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-04-02 02:44:38,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:44:38,724 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 59 proven. 3 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-04-02 02:44:38,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:44:38,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195188743] [2023-04-02 02:44:38,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:44:38,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405864134] [2023-04-02 02:44:38,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405864134] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:44:38,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 02:44:38,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2023-04-02 02:44:38,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357482581] [2023-04-02 02:44:38,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 02:44:38,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 02:44:38,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:44:38,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 02:44:38,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-04-02 02:44:38,727 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 15 states have internal predecessors, (43), 14 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 14 states have call predecessors, (19), 14 states have call successors, (19) [2023-04-02 02:44:38,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:44:38,793 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2023-04-02 02:44:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 02:44:38,794 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 15 states have internal predecessors, (43), 14 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 14 states have call predecessors, (19), 14 states have call successors, (19) Word has length 68 [2023-04-02 02:44:38,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:44:38,794 INFO L225 Difference]: With dead ends: 51 [2023-04-02 02:44:38,795 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 02:44:38,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2023-04-02 02:44:38,797 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:44:38,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 117 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:44:38,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 02:44:38,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 02:44:38,798 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 02:44:38,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 02:44:38,800 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68 [2023-04-02 02:44:38,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:44:38,803 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 02:44:38,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 15 states have internal predecessors, (43), 14 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 14 states have call predecessors, (19), 14 states have call successors, (19) [2023-04-02 02:44:38,803 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 02:44:38,803 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 02:44:38,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 02:44:38,819 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 02:44:39,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:44:39,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 02:44:39,449 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2023-04-02 02:44:39,449 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2023-04-02 02:44:39,449 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 3) no Hoare annotation was computed. [2023-04-02 02:44:39,449 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6 8) the Hoare annotation is: true [2023-04-02 02:44:39,449 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-04-02 02:44:39,449 INFO L899 garLoopResultBuilder]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2023-04-02 02:44:39,450 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2023-04-02 02:44:39,450 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (<= main_~k~0 2))) (or (and (= main_~x~0 0) (<= 0 main_~k~0) .cse0 (= main_~c~0 0) (= main_~y~0 0)) (and (= main_~y~0 1) .cse0 (= main_~x~0 1) (< 0 main_~k~0) (= main_~c~0 1)) (and (= main_~y~0 2) (< 1 main_~k~0) .cse0 (<= main_~c~0 2) (= main_~x~0 17) (<= 2 main_~c~0)))) [2023-04-02 02:44:39,450 INFO L899 garLoopResultBuilder]: For program point L29-1(lines 28 37) no Hoare annotation was computed. [2023-04-02 02:44:39,450 INFO L895 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse0 (<= main_~k~0 2))) (or (and (= main_~x~0 0) (<= 0 main_~k~0) .cse0 (= main_~c~0 0) (= main_~y~0 0)) (and (= main_~y~0 1) .cse0 (= main_~x~0 1) (< 0 main_~k~0) (= main_~c~0 1)) (and (= main_~y~0 2) (< 1 main_~k~0) .cse0 (<= main_~c~0 2) (= main_~x~0 17) (<= 2 main_~c~0)))) [2023-04-02 02:44:39,450 INFO L895 garLoopResultBuilder]: At program point L28-3(lines 28 37) the Hoare annotation is: (or (and (= main_~x~0 0) (= main_~y~0 0)) (and (<= main_~k~0 1) (= main_~y~0 1) (= main_~x~0 1) (< 0 main_~k~0)) (let ((.cse2 (* main_~k~0 main_~y~0)) (.cse1 (* main_~y~0 main_~y~0)) (.cse0 (+ main_~c~0 1))) (and (or (<= main_~k~0 .cse0) (< (+ main_~c~0 2) main_~k~0) (= (+ 4 .cse1 (* main_~y~0 4)) (+ (* main_~k~0 2) .cse2))) (<= main_~k~0 256) (= .cse1 .cse2) (or (= (+ main_~k~0 .cse2) (+ (* main_~y~0 2) .cse1 1)) (<= main_~k~0 main_~c~0) (< .cse0 main_~k~0)) (= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))))) [2023-04-02 02:44:39,450 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 17 42) no Hoare annotation was computed. [2023-04-02 02:44:39,450 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2023-04-02 02:44:39,450 INFO L902 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: true [2023-04-02 02:44:39,450 INFO L895 garLoopResultBuilder]: At program point L21-1(line 21) the Hoare annotation is: (and (<= 0 main_~k~0) (<= main_~k~0 2)) [2023-04-02 02:44:39,451 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 17 42) no Hoare annotation was computed. [2023-04-02 02:44:39,451 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 42) the Hoare annotation is: true [2023-04-02 02:44:39,451 INFO L899 garLoopResultBuilder]: For program point L40(line 40) no Hoare annotation was computed. [2023-04-02 02:44:39,451 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (or (and (= main_~x~0 0) (= main_~y~0 0)) (and (<= main_~k~0 1) (= main_~y~0 1) (= main_~x~0 1) (< 0 main_~k~0)) (let ((.cse2 (* main_~k~0 main_~y~0)) (.cse1 (* main_~y~0 main_~y~0)) (.cse0 (+ main_~c~0 1))) (and (or (<= main_~k~0 .cse0) (< (+ main_~c~0 2) main_~k~0) (= (+ 4 .cse1 (* main_~y~0 4)) (+ (* main_~k~0 2) .cse2))) (<= main_~k~0 256) (= .cse1 .cse2) (or (= (+ main_~k~0 .cse2) (+ (* main_~y~0 2) .cse1 1)) (<= main_~k~0 main_~c~0) (< .cse0 main_~k~0)) (= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))))) [2023-04-02 02:44:39,451 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2023-04-02 02:44:39,451 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 02:44:39,451 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 02:44:39,451 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 02:44:39,451 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-02 02:44:39,451 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 02:44:39,451 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 02:44:39,451 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2023-04-02 02:44:39,452 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2023-04-02 02:44:39,452 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2023-04-02 02:44:39,452 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 15) the Hoare annotation is: true [2023-04-02 02:44:39,452 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2023-04-02 02:44:39,452 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2023-04-02 02:44:39,455 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2023-04-02 02:44:39,456 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 02:44:39,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 02:44:39 BoogieIcfgContainer [2023-04-02 02:44:39,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 02:44:39,471 INFO L158 Benchmark]: Toolchain (without parser) took 74993.76ms. Allocated memory is still 280.0MB. Free memory was 245.1MB in the beginning and 242.7MB in the end (delta: 2.4MB). Peak memory consumption was 145.7MB. Max. memory is 8.0GB. [2023-04-02 02:44:39,471 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 188.7MB. Free memory was 135.5MB in the beginning and 135.3MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 02:44:39,471 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.29ms. Allocated memory is still 280.0MB. Free memory was 244.7MB in the beginning and 234.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 02:44:39,472 INFO L158 Benchmark]: Boogie Preprocessor took 23.10ms. Allocated memory is still 280.0MB. Free memory was 234.2MB in the beginning and 232.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-02 02:44:39,472 INFO L158 Benchmark]: RCFGBuilder took 268.56ms. Allocated memory is still 280.0MB. Free memory was 232.8MB in the beginning and 221.6MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-02 02:44:39,472 INFO L158 Benchmark]: TraceAbstraction took 74508.14ms. Allocated memory is still 280.0MB. Free memory was 220.9MB in the beginning and 242.7MB in the end (delta: -21.7MB). Peak memory consumption was 121.6MB. Max. memory is 8.0GB. [2023-04-02 02:44:39,473 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 188.7MB. Free memory was 135.5MB in the beginning and 135.3MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 189.29ms. Allocated memory is still 280.0MB. Free memory was 244.7MB in the beginning and 234.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.10ms. Allocated memory is still 280.0MB. Free memory was 234.2MB in the beginning and 232.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 268.56ms. Allocated memory is still 280.0MB. Free memory was 232.8MB in the beginning and 221.6MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 74508.14ms. Allocated memory is still 280.0MB. Free memory was 220.9MB in the beginning and 242.7MB in the end (delta: -21.7MB). Peak memory consumption was 121.6MB. 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: 12]: 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 74.4s, OverallIterations: 6, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 57 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 51 mSDsluCounter, 735 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 587 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 509 IncrementalHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 148 mSDtfsCounter, 509 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 401 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 17.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=5, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 32 PreInvPairs, 47 NumberOfFragments, 338 HoareAnnotationTreeSize, 32 FomulaSimplifications, 383 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 148 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 4.7s SatisfiabilityAnalysisTime, 66.6s InterpolantComputationTime, 250 NumberOfCodeBlocks, 250 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 363 ConstructedInterpolants, 0 QuantifiedInterpolants, 1144 SizeOfPredicates, 13 NumberOfNonLiveVariables, 672 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 401/433 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: 28]: Loop Invariant Derived loop invariant: (((((x == 0 && 0 <= k) && k <= 2) && c == 0) && y == 0) || ((((y == 1 && k <= 2) && x == 1) && 0 < k) && c == 1)) || (((((y == 2 && 1 < k) && k <= 2) && c <= 2) && x == 17) && 2 <= c) RESULT: Ultimate proved your program to be correct! [2023-04-02 02:44:39,503 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...