/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/loop-lit/jm2006_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 22:11:49,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 22:11:49,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 22:11:49,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 22:11:49,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 22:11:49,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 22:11:49,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 22:11:49,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 22:11:49,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 22:11:49,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 22:11:49,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 22:11:49,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2023-04-02 22:11:49,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 22:11:49,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 22:11:49,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 22:11:49,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 22:11:49,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 22:11:49,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 22:11:49,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 22:11:49,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 22:11:49,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 22:11:49,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 22:11:49,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 22:11:49,996 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-02 22:11:50,017 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 22:11:50,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 22:11:50,017 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 22:11:50,017 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 22:11:50,018 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 22:11:50,018 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 22:11:50,018 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 22:11:50,018 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 22:11:50,018 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 22:11:50,018 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 22:11:50,019 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 22:11:50,019 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 22:11:50,019 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 22:11:50,019 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 22:11:50,019 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 22:11:50,019 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 22:11:50,019 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 22:11:50,019 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 22:11:50,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 22:11:50,020 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 22:11:50,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 22:11:50,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 22:11:50,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 22:11:50,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 22:11:50,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 22:11:50,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 22:11:50,021 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 22:11:50,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 22:11:50,021 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 22:11:50,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 22:11:50,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 22:11:50,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 22:11:50,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:11:50,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 22:11:50,022 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 22:11:50,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 22:11:50,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 22:11:50,022 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 22:11:50,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 22:11:50,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 22:11:50,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 22:11:50,022 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 22:11:50,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 22:11:50,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 22:11:50,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 22:11:50,211 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 22:11:50,211 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 22:11:50,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/jm2006_variant.i [2023-04-02 22:11:51,239 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 22:11:51,369 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 22:11:51,369 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/jm2006_variant.i [2023-04-02 22:11:51,373 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88d9632e8/9c45cfd2b0464167b02de8bb79e107bf/FLAG576cbc2bf [2023-04-02 22:11:51,385 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88d9632e8/9c45cfd2b0464167b02de8bb79e107bf [2023-04-02 22:11:51,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 22:11:51,388 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 22:11:51,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 22:11:51,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 22:11:51,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 22:11:51,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:11:51" (1/1) ... [2023-04-02 22:11:51,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@81b2478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:11:51, skipping insertion in model container [2023-04-02 22:11:51,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:11:51" (1/1) ... [2023-04-02 22:11:51,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 22:11:51,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 22:11:51,523 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-lit/jm2006_variant.i[895,908] [2023-04-02 22:11:51,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:11:51,541 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 22:11:51,548 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-lit/jm2006_variant.i[895,908] [2023-04-02 22:11:51,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:11:51,558 INFO L208 MainTranslator]: Completed translation [2023-04-02 22:11:51,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:11:51 WrapperNode [2023-04-02 22:11:51,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 22:11:51,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 22:11:51,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 22:11:51,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 22:11:51,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:11:51" (1/1) ... [2023-04-02 22:11:51,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:11:51" (1/1) ... [2023-04-02 22:11:51,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:11:51" (1/1) ... [2023-04-02 22:11:51,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:11:51" (1/1) ... [2023-04-02 22:11:51,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:11:51" (1/1) ... [2023-04-02 22:11:51,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:11:51" (1/1) ... [2023-04-02 22:11:51,574 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:11:51" (1/1) ... [2023-04-02 22:11:51,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:11:51" (1/1) ... [2023-04-02 22:11:51,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 22:11:51,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 22:11:51,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 22:11:51,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 22:11:51,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:11:51" (1/1) ... [2023-04-02 22:11:51,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:11:51,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:11:51,632 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 22:11:51,634 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 22:11:51,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 22:11:51,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 22:11:51,683 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 22:11:51,683 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 22:11:51,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 22:11:51,684 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 22:11:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 22:11:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 22:11:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 22:11:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 22:11:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 22:11:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 22:11:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 22:11:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 22:11:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 22:11:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 22:11:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 22:11:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 22:11:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 22:11:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 22:11:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 22:11:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 22:11:51,733 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 22:11:51,734 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 22:11:51,905 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 22:11:51,936 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 22:11:51,937 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 22:11:51,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:11:51 BoogieIcfgContainer [2023-04-02 22:11:51,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 22:11:51,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 22:11:51,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 22:11:51,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 22:11:51,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 10:11:51" (1/3) ... [2023-04-02 22:11:51,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13060a88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:11:51, skipping insertion in model container [2023-04-02 22:11:51,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:11:51" (2/3) ... [2023-04-02 22:11:51,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13060a88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:11:51, skipping insertion in model container [2023-04-02 22:11:51,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:11:51" (3/3) ... [2023-04-02 22:11:51,962 INFO L112 eAbstractionObserver]: Analyzing ICFG jm2006_variant.i [2023-04-02 22:11:51,974 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 22:11:51,974 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 22:11:52,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 22:11:52,043 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=FINITE_AUTOMATA, 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;@5ac34b8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 22:11:52,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 22:11:52,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 22:11:52,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-04-02 22:11:52,055 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:11:52,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:11:52,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:11:52,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:11:52,062 INFO L85 PathProgramCache]: Analyzing trace with hash 2033273603, now seen corresponding path program 1 times [2023-04-02 22:11:52,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:11:52,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921618995] [2023-04-02 22:11:52,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:11:52,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:11:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:11:52,586 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 22:11:52,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:11:52,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921618995] [2023-04-02 22:11:52,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921618995] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:11:52,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:11:52,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 22:11:52,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432339027] [2023-04-02 22:11:52,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:11:52,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 22:11:52,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:11:52,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 22:11:52,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 22:11:52,617 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:11:52,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:11:52,749 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2023-04-02 22:11:52,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 22:11:52,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-04-02 22:11:52,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:11:52,756 INFO L225 Difference]: With dead ends: 43 [2023-04-02 22:11:52,756 INFO L226 Difference]: Without dead ends: 15 [2023-04-02 22:11:52,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-04-02 22:11:52,762 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 15 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:11:52,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 88 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:11:52,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-04-02 22:11:52,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-04-02 22:11:52,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:11:52,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-04-02 22:11:52,782 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2023-04-02 22:11:52,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:11:52,782 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2023-04-02 22:11:52,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:11:52,782 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-04-02 22:11:52,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-04-02 22:11:52,783 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:11:52,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:11:52,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 22:11:52,783 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:11:52,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:11:52,784 INFO L85 PathProgramCache]: Analyzing trace with hash -722087127, now seen corresponding path program 1 times [2023-04-02 22:11:52,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:11:52,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414432535] [2023-04-02 22:11:52,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:11:52,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:11:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:11:52,953 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 22:11:52,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:11:52,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414432535] [2023-04-02 22:11:52,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414432535] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:11:52,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558677249] [2023-04-02 22:11:52,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:11:52,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:11:52,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:11:52,962 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 22:11:52,965 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 22:11:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:11:53,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-02 22:11:53,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:11:53,124 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 22:11:53,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:11:53,225 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 22:11:53,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558677249] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:11:53,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2000411541] [2023-04-02 22:11:53,239 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-04-02 22:11:53,239 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:11:53,241 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:11:53,244 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:11:53,244 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:11:53,288 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:11:53,490 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 36 for LOIs [2023-04-02 22:11:53,520 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:11:53,525 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:11:54,097 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '209#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:11:54,097 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:11:54,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 22:11:54,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-04-02 22:11:54,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708311971] [2023-04-02 22:11:54,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 22:11:54,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 22:11:54,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:11:54,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 22:11:54,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2023-04-02 22:11:54,100 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 17 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:11:54,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:11:54,303 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2023-04-02 22:11:54,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 22:11:54,303 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-04-02 22:11:54,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:11:54,304 INFO L225 Difference]: With dead ends: 27 [2023-04-02 22:11:54,304 INFO L226 Difference]: Without dead ends: 18 [2023-04-02 22:11:54,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=172, Invalid=1018, Unknown=0, NotChecked=0, Total=1190 [2023-04-02 22:11:54,305 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 13 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:11:54,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:11:54,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-04-02 22:11:54,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-04-02 22:11:54,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:11:54,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2023-04-02 22:11:54,309 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2023-04-02 22:11:54,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:11:54,310 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2023-04-02 22:11:54,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:11:54,310 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2023-04-02 22:11:54,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-02 22:11:54,310 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:11:54,310 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:11:54,332 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 22:11:54,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:11:54,535 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:11:54,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:11:54,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1977277309, now seen corresponding path program 2 times [2023-04-02 22:11:54,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:11:54,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644644379] [2023-04-02 22:11:54,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:11:54,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:11:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:11:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-02 22:11:54,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:11:54,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644644379] [2023-04-02 22:11:54,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644644379] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:11:54,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500719430] [2023-04-02 22:11:54,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 22:11:54,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:11:54,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:11:54,778 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 22:11:54,801 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 22:11:54,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-02 22:11:54,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:11:54,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 41 conjunts are in the unsatisfiable core [2023-04-02 22:11:54,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:11:55,002 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:11:55,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:11:55,178 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:11:55,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500719430] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:11:55,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1336394265] [2023-04-02 22:11:55,182 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-04-02 22:11:55,183 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:11:55,183 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:11:55,183 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:11:55,183 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:11:55,202 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:11:55,303 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 36 for LOIs [2023-04-02 22:11:55,314 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:11:55,316 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:11:55,869 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '427#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:11:55,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:11:55,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 22:11:55,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 24 [2023-04-02 22:11:55,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444403674] [2023-04-02 22:11:55,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 22:11:55,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-02 22:11:55,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:11:55,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-02 22:11:55,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1026, Unknown=0, NotChecked=0, Total=1190 [2023-04-02 22:11:55,871 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 24 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:11:55,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:11:55,994 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2023-04-02 22:11:55,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 22:11:55,994 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-04-02 22:11:55,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:11:55,994 INFO L225 Difference]: With dead ends: 21 [2023-04-02 22:11:55,994 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 22:11:55,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=226, Invalid=1334, Unknown=0, NotChecked=0, Total=1560 [2023-04-02 22:11:55,995 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:11:55,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:11:55,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 22:11:55,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 22:11:55,996 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 22:11:55,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 22:11:55,996 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2023-04-02 22:11:55,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:11:55,997 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 22:11:55,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:11:55,997 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 22:11:55,997 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 22:11:55,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 22:11:56,015 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 22:11:56,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-04-02 22:11:56,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 22:11:56,296 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2023-04-02 22:11:56,296 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 12) no Hoare annotation was computed. [2023-04-02 22:11:56,296 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(lines 14 16) no Hoare annotation was computed. [2023-04-02 22:11:56,296 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2023-04-02 22:11:56,296 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 37) the Hoare annotation is: (let ((.cse1 (+ main_~j~0 main_~x~0)) (.cse0 (+ main_~i~0 main_~z~0 main_~y~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2023-04-02 22:11:56,296 INFO L899 garLoopResultBuilder]: For program point L33-3(lines 24 42) no Hoare annotation was computed. [2023-04-02 22:11:56,296 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-04-02 22:11:56,296 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 24 42) no Hoare annotation was computed. [2023-04-02 22:11:56,296 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 24 42) no Hoare annotation was computed. [2023-04-02 22:11:56,297 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 24 42) the Hoare annotation is: true [2023-04-02 22:11:56,297 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 40) no Hoare annotation was computed. [2023-04-02 22:11:56,297 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2023-04-02 22:11:56,297 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (or (and (= main_~z~0 0) (<= main_~y~0 0) (< 0 (+ main_~y~0 1))) (and (or (not (= main_~i~0 main_~j~0)) (not (= main_~x~0 1))) (<= (+ main_~z~0 main_~y~0) 0) (< 0 (+ main_~z~0 main_~y~0 1)))) [2023-04-02 22:11:56,297 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 22:11:56,297 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:11:56,297 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:11:56,297 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-02 22:11:56,297 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 22:11:56,297 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 22:11:56,297 INFO L899 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2023-04-02 22:11:56,297 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2023-04-02 22:11:56,297 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 22) the Hoare annotation is: true [2023-04-02 22:11:56,298 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-04-02 22:11:56,298 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-04-02 22:11:56,298 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2023-04-02 22:11:56,300 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-04-02 22:11:56,301 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 22:11:56,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 10:11:56 BoogieIcfgContainer [2023-04-02 22:11:56,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 22:11:56,310 INFO L158 Benchmark]: Toolchain (without parser) took 4921.89ms. Allocated memory was 168.8MB in the beginning and 230.7MB in the end (delta: 61.9MB). Free memory was 118.6MB in the beginning and 93.5MB in the end (delta: 25.2MB). Peak memory consumption was 88.6MB. Max. memory is 8.0GB. [2023-04-02 22:11:56,310 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 168.8MB. Free memory was 115.5MB in the beginning and 115.3MB in the end (delta: 149.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 22:11:56,310 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.01ms. Allocated memory is still 168.8MB. Free memory was 118.3MB in the beginning and 108.1MB in the end (delta: 10.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-04-02 22:11:56,310 INFO L158 Benchmark]: Boogie Preprocessor took 17.20ms. Allocated memory is still 168.8MB. Free memory was 108.1MB in the beginning and 106.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 22:11:56,310 INFO L158 Benchmark]: RCFGBuilder took 362.32ms. Allocated memory is still 168.8MB. Free memory was 106.7MB in the beginning and 95.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-02 22:11:56,311 INFO L158 Benchmark]: TraceAbstraction took 4369.60ms. Allocated memory was 168.8MB in the beginning and 230.7MB in the end (delta: 61.9MB). Free memory was 94.5MB in the beginning and 93.5MB in the end (delta: 1.0MB). Peak memory consumption was 64.4MB. Max. memory is 8.0GB. [2023-04-02 22:11:56,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 168.8MB. Free memory was 115.5MB in the beginning and 115.3MB in the end (delta: 149.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 167.01ms. Allocated memory is still 168.8MB. Free memory was 118.3MB in the beginning and 108.1MB in the end (delta: 10.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.20ms. Allocated memory is still 168.8MB. Free memory was 108.1MB in the beginning and 106.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 362.32ms. Allocated memory is still 168.8MB. Free memory was 106.7MB in the beginning and 95.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 4369.60ms. Allocated memory was 168.8MB in the beginning and 230.7MB in the end (delta: 61.9MB). Free memory was 94.5MB in the beginning and 93.5MB in the end (delta: 1.0MB). Peak memory consumption was 64.4MB. 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: 19]: 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, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.3s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 191 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 154 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 256 IncrementalHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 37 mSDtfsCounter, 256 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 36, 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, 7 LocationsWithAnnotation, 11 PreInvPairs, 20 NumberOfFragments, 56 HoareAnnotationTreeSize, 11 FomulaSimplifications, 41 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 238 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 732 SizeOfPredicates, 8 NumberOfNonLiveVariables, 159 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 3/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: i + z + y <= j + x && j + x <= i + z + y RESULT: Ultimate proved your program to be correct! [2023-04-02 22:11:56,327 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...