/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/loop-new/gauss_sum.i.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 01:30:48,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 01:30:48,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 01:30:48,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 01:30:48,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 01:30:48,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 01:30:48,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 01:30:48,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 01:30:48,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 01:30:48,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 01:30:48,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 01:30:48,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 01:30:48,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 01:30:48,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 01:30:48,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 01:30:48,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 01:30:48,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 01:30:48,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 01:30:48,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 01:30:48,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 01:30:48,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 01:30:48,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 01:30:48,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 01:30:48,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 01:30:48,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 01:30:48,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 01:30:48,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 01:30:48,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 01:30:48,458 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 01:30:48,486 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 01:30:48,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 01:30:48,487 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 01:30:48,487 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 01:30:48,488 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 01:30:48,488 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 01:30:48,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 01:30:48,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 01:30:48,489 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 01:30:48,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 01:30:48,490 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 01:30:48,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 01:30:48,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 01:30:48,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 01:30:48,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 01:30:48,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 01:30:48,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 01:30:48,491 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 01:30:48,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 01:30:48,491 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 01:30:48,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 01:30:48,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 01:30:48,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 01:30:48,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 01:30:48,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:30:48,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 01:30:48,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 01:30:48,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 01:30:48,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 01:30:48,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 01:30:48,493 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 01:30:48,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 01:30:48,493 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 01:30:48,493 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 01:30:48,493 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 01:30:48,493 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 01:30:48,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 01:30:48,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 01:30:48,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 01:30:48,718 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 01:30:48,719 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 01:30:48,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-new/gauss_sum.i.p+cfa-reducer.c [2023-04-02 01:30:49,936 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 01:30:50,110 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 01:30:50,111 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/gauss_sum.i.p+cfa-reducer.c [2023-04-02 01:30:50,115 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/863512479/0d847fbfd17246fa90a1092adaaeafd3/FLAGf73af8a33 [2023-04-02 01:30:50,127 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/863512479/0d847fbfd17246fa90a1092adaaeafd3 [2023-04-02 01:30:50,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 01:30:50,130 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 01:30:50,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 01:30:50,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 01:30:50,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 01:30:50,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:30:50" (1/1) ... [2023-04-02 01:30:50,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@768854cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:30:50, skipping insertion in model container [2023-04-02 01:30:50,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:30:50" (1/1) ... [2023-04-02 01:30:50,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 01:30:50,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 01:30:50,266 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/loop-new/gauss_sum.i.p+cfa-reducer.c[1014,1027] [2023-04-02 01:30:50,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:30:50,276 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 01:30:50,286 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/loop-new/gauss_sum.i.p+cfa-reducer.c[1014,1027] [2023-04-02 01:30:50,287 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:30:50,304 INFO L208 MainTranslator]: Completed translation [2023-04-02 01:30:50,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:30:50 WrapperNode [2023-04-02 01:30:50,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 01:30:50,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 01:30:50,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 01:30:50,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 01:30:50,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:30:50" (1/1) ... [2023-04-02 01:30:50,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:30:50" (1/1) ... [2023-04-02 01:30:50,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:30:50" (1/1) ... [2023-04-02 01:30:50,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:30:50" (1/1) ... [2023-04-02 01:30:50,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:30:50" (1/1) ... [2023-04-02 01:30:50,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:30:50" (1/1) ... [2023-04-02 01:30:50,323 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:30:50" (1/1) ... [2023-04-02 01:30:50,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:30:50" (1/1) ... [2023-04-02 01:30:50,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 01:30:50,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 01:30:50,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 01:30:50,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 01:30:50,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:30:50" (1/1) ... [2023-04-02 01:30:50,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:30:50,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:30:50,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 01:30:50,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 01:30:50,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 01:30:50,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 01:30:50,388 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 01:30:50,389 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 01:30:50,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 01:30:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 01:30:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 01:30:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 01:30:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 01:30:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 01:30:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 01:30:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 01:30:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 01:30:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 01:30:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 01:30:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 01:30:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 01:30:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 01:30:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 01:30:50,445 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 01:30:50,448 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 01:30:50,611 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 01:30:50,616 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 01:30:50,620 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 01:30:50,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:30:50 BoogieIcfgContainer [2023-04-02 01:30:50,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 01:30:50,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 01:30:50,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 01:30:50,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 01:30:50,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 01:30:50" (1/3) ... [2023-04-02 01:30:50,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a894b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:30:50, skipping insertion in model container [2023-04-02 01:30:50,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:30:50" (2/3) ... [2023-04-02 01:30:50,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a894b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:30:50, skipping insertion in model container [2023-04-02 01:30:50,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:30:50" (3/3) ... [2023-04-02 01:30:50,628 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum.i.p+cfa-reducer.c [2023-04-02 01:30:50,643 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 01:30:50,644 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 01:30:50,694 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 01:30:50,701 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;@63935895, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 01:30:50,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 01:30:50,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:30:50,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-04-02 01:30:50,713 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:30:50,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:30:50,715 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:30:50,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:30:50,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1088558671, now seen corresponding path program 1 times [2023-04-02 01:30:50,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:30:50,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068346034] [2023-04-02 01:30:50,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:30:50,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:30:50,819 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 01:30:50,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515133876] [2023-04-02 01:30:50,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:30:50,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:30:50,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:30:50,824 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:30:50,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 01:30:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:50,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 01:30:50,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:30:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:30:50,965 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 01:30:50,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:30:50,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068346034] [2023-04-02 01:30:50,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 01:30:50,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515133876] [2023-04-02 01:30:50,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515133876] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:30:50,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:30:50,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 01:30:50,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95111718] [2023-04-02 01:30:50,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:30:50,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 01:30:50,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:30:51,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 01:30:51,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-02 01:30:51,015 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:30:51,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:30:51,056 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2023-04-02 01:30:51,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 01:30:51,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-04-02 01:30:51,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:30:51,065 INFO L225 Difference]: With dead ends: 26 [2023-04-02 01:30:51,065 INFO L226 Difference]: Without dead ends: 13 [2023-04-02 01:30:51,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-02 01:30:51,070 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 01:30:51,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 29 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 01:30:51,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-04-02 01:30:51,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-04-02 01:30:51,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:30:51,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-04-02 01:30:51,096 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2023-04-02 01:30:51,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:30:51,097 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-04-02 01:30:51,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:30:51,097 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-04-02 01:30:51,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-04-02 01:30:51,097 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:30:51,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:30:51,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 01:30:51,303 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 01:30:51,304 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:30:51,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:30:51,305 INFO L85 PathProgramCache]: Analyzing trace with hash 614357099, now seen corresponding path program 1 times [2023-04-02 01:30:51,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:30:51,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070112794] [2023-04-02 01:30:51,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:30:51,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:30:51,320 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 01:30:51,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367222815] [2023-04-02 01:30:51,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:30:51,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:30:51,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:30:51,323 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:30:51,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 01:30:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:51,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-02 01:30:51,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:30:51,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:30:51,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:30:51,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:30:51,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:30:51,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070112794] [2023-04-02 01:30:51,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 01:30:51,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367222815] [2023-04-02 01:30:51,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367222815] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:30:51,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 01:30:51,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-04-02 01:30:51,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280001168] [2023-04-02 01:30:51,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 01:30:51,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 01:30:51,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:30:51,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 01:30:51,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-04-02 01:30:51,612 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:30:51,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:30:51,648 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2023-04-02 01:30:51,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 01:30:51,648 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-04-02 01:30:51,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:30:51,649 INFO L225 Difference]: With dead ends: 17 [2023-04-02 01:30:51,649 INFO L226 Difference]: Without dead ends: 14 [2023-04-02 01:30:51,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-04-02 01:30:51,651 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 01:30:51,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 46 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 01:30:51,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-04-02 01:30:51,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-04-02 01:30:51,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:30:51,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-04-02 01:30:51,655 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2023-04-02 01:30:51,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:30:51,655 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-04-02 01:30:51,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:30:51,656 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-04-02 01:30:51,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-04-02 01:30:51,656 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:30:51,657 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:30:51,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 01:30:51,865 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 01:30:51,865 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:30:51,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:30:51,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1865138417, now seen corresponding path program 2 times [2023-04-02 01:30:51,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:30:51,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571019303] [2023-04-02 01:30:51,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:30:51,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:30:51,882 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 01:30:51,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1175297574] [2023-04-02 01:30:51,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:30:51,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:30:51,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:30:51,894 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:30:51,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 01:30:51,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:30:51,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:30:51,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-02 01:30:51,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:30:52,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:30:52,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:30:52,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 01:30:52,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:30:52,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571019303] [2023-04-02 01:30:52,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 01:30:52,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175297574] [2023-04-02 01:30:52,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175297574] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:30:52,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 01:30:52,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2023-04-02 01:30:52,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036327453] [2023-04-02 01:30:52,322 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 01:30:52,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 01:30:52,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:30:52,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 01:30:52,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-02 01:30:52,323 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:30:52,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:30:52,568 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2023-04-02 01:30:52,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 01:30:52,568 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-04-02 01:30:52,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:30:52,569 INFO L225 Difference]: With dead ends: 16 [2023-04-02 01:30:52,569 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 01:30:52,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-04-02 01:30:52,570 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 01:30:52,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 33 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 01:30:52,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 01:30:52,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 01:30:52,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-02 01:30:52,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 01:30:52,572 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2023-04-02 01:30:52,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:30:52,572 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 01:30:52,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:30:52,572 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 01:30:52,572 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 01:30:52,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 01:30:52,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 01:30:52,785 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 01:30:52,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 01:30:52,880 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2023-04-02 01:30:52,881 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2023-04-02 01:30:52,881 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 4) no Hoare annotation was computed. [2023-04-02 01:30:52,881 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(lines 6 8) no Hoare annotation was computed. [2023-04-02 01:30:52,881 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-04-02 01:30:52,881 INFO L899 garLoopResultBuilder]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2023-04-02 01:30:52,881 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2023-04-02 01:30:52,881 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 49) no Hoare annotation was computed. [2023-04-02 01:30:52,882 INFO L895 garLoopResultBuilder]: At program point $Ultimate##6(lines 34 58) the Hoare annotation is: (let ((.cse0 (* main_~main__sum~0 2))) (and (forall ((main_~main__n~0 Int)) (or (< main_~main__n~0 main_~main__i~0) (< main_~main__i~0 main_~main__n~0) (= (+ (* main_~main__n~0 main_~main__n~0) main_~main__n~0) (+ .cse0 (* 2 main_~main__i~0))))) (<= 1 main_~main__n~0) (or (= .cse0 (+ (* main_~main__n~0 main_~main__n~0) main_~main__n~0)) (<= main_~main__i~0 main_~main__n~0)))) [2023-04-02 01:30:52,882 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 59) no Hoare annotation was computed. [2023-04-02 01:30:52,882 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 13 61) no Hoare annotation was computed. [2023-04-02 01:30:52,882 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 60) no Hoare annotation was computed. [2023-04-02 01:30:52,882 INFO L899 garLoopResultBuilder]: For program point L49(line 49) no Hoare annotation was computed. [2023-04-02 01:30:52,883 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 56) no Hoare annotation was computed. [2023-04-02 01:30:52,883 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 13 61) no Hoare annotation was computed. [2023-04-02 01:30:52,883 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 13 61) the Hoare annotation is: true [2023-04-02 01:30:52,883 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2023-04-02 01:30:52,883 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 01:30:52,883 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 01:30:52,883 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 01:30:52,883 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-02 01:30:52,883 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 01:30:52,884 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 01:30:52,886 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-04-02 01:30:52,888 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 01:30:52,907 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 01:30:52,908 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 01:30:52,908 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 01:30:52,908 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 01:30:52,908 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 01:30:52,913 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 01:30:52,913 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 01:30:52,913 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 01:30:52,914 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 01:30:52,914 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 01:30:52,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 01:30:52 BoogieIcfgContainer [2023-04-02 01:30:52,915 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 01:30:52,915 INFO L158 Benchmark]: Toolchain (without parser) took 2785.23ms. Allocated memory is still 260.0MB. Free memory was 214.2MB in the beginning and 91.6MB in the end (delta: 122.7MB). Peak memory consumption was 122.7MB. Max. memory is 8.0GB. [2023-04-02 01:30:52,916 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 180.4MB. Free memory was 133.3MB in the beginning and 133.1MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 01:30:52,916 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.11ms. Allocated memory is still 260.0MB. Free memory was 213.7MB in the beginning and 203.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 01:30:52,916 INFO L158 Benchmark]: Boogie Preprocessor took 20.66ms. Allocated memory is still 260.0MB. Free memory was 203.8MB in the beginning and 202.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-02 01:30:52,917 INFO L158 Benchmark]: RCFGBuilder took 295.74ms. Allocated memory is still 260.0MB. Free memory was 202.2MB in the beginning and 191.2MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-02 01:30:52,917 INFO L158 Benchmark]: TraceAbstraction took 2291.54ms. Allocated memory is still 260.0MB. Free memory was 190.1MB in the beginning and 91.6MB in the end (delta: 98.6MB). Peak memory consumption was 98.6MB. Max. memory is 8.0GB. [2023-04-02 01:30:52,918 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 180.4MB. Free memory was 133.3MB in the beginning and 133.1MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 173.11ms. Allocated memory is still 260.0MB. Free memory was 213.7MB in the beginning and 203.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.66ms. Allocated memory is still 260.0MB. Free memory was 203.8MB in the beginning and 202.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 295.74ms. Allocated memory is still 260.0MB. Free memory was 202.2MB in the beginning and 191.2MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2291.54ms. Allocated memory is still 260.0MB. Free memory was 190.1MB in the beginning and 91.6MB in the end (delta: 98.6MB). Peak memory consumption was 98.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] * 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: 49]: 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 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 108 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 75 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 61 IncrementalHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 33 mSDtfsCounter, 61 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 42 HoareAnnotationTreeSize, 5 FomulaSimplifications, 11 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 60 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 56 ConstructedInterpolants, 2 QuantifiedInterpolants, 205 SizeOfPredicates, 12 NumberOfNonLiveVariables, 228 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 1/8 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: 34]: Loop Invariant [2023-04-02 01:30:52,931 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 01:30:52,932 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 01:30:52,932 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 01:30:52,932 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 01:30:52,932 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 01:30:52,932 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 01:30:52,933 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 01:30:52,933 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 01:30:52,933 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 01:30:52,933 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] Derived loop invariant: ((forall main_~main__n~0 : int :: (main_~main__n~0 < main__i || main__i < main_~main__n~0) || main_~main__n~0 * main_~main__n~0 + main_~main__n~0 == main__sum * 2 + 2 * main__i) && 1 <= main__n) && (main__sum * 2 == main__n * main__n + main__n || main__i <= main__n) RESULT: Ultimate proved your program to be correct! [2023-04-02 01:30:52,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...