/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 EqDomain -i ../sv-benchmarks/c/ldv-regression/test23-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 10:53:05,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 10:53:05,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 10:53:05,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 10:53:05,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 10:53:05,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 10:53:05,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 10:53:05,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 10:53:05,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 10:53:05,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 10:53:05,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 10:53:05,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2023-04-01 10:53:05,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 10:53:05,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 10:53:05,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 10:53:06,000 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 [2023-04-01 10:53:06,029 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 10:53:06,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 10:53:06,030 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 10:53:06,030 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 10:53:06,031 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 10:53:06,031 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 10:53:06,031 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 10:53:06,031 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 10:53:06,031 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 10:53:06,031 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 10:53:06,032 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 10:53:06,032 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 10:53:06,032 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 10:53:06,032 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 10:53:06,033 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 10:53:06,033 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 10:53:06,033 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 10:53:06,033 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 10:53:06,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 10:53:06,033 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 10:53:06,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 10:53:06,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 10:53:06,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 10:53:06,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 10:53:06,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 10:53:06,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 10:53:06,034 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 10:53:06,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 10:53:06,034 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 10:53:06,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 10:53:06,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 10:53:06,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 10:53:06,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 10:53:06,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 10:53:06,035 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 10:53:06,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 10:53:06,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 10:53:06,036 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 10:53:06,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 10:53:06,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 10:53:06,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 10:53:06,036 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 10:53:06,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 10:53:06,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 10:53:06,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 10:53:06,270 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 10:53:06,271 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 10:53:06,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test23-1.c [2023-04-01 10:53:07,461 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 10:53:07,684 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 10:53:07,685 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test23-1.c [2023-04-01 10:53:07,691 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/896c8ae12/6332d4dd3cdb47469c730590fd75c6bf/FLAGa53308678 [2023-04-01 10:53:07,707 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/896c8ae12/6332d4dd3cdb47469c730590fd75c6bf [2023-04-01 10:53:07,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 10:53:07,712 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 10:53:07,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 10:53:07,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 10:53:07,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 10:53:07,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:53:07" (1/1) ... [2023-04-01 10:53:07,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f7ecc9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:07, skipping insertion in model container [2023-04-01 10:53:07,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:53:07" (1/1) ... [2023-04-01 10:53:07,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 10:53:07,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 10:53:07,876 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/ldv-regression/test23-1.c[1075,1088] [2023-04-01 10:53:07,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 10:53:07,892 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 10:53:07,907 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/ldv-regression/test23-1.c[1075,1088] [2023-04-01 10:53:07,908 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 10:53:07,920 INFO L208 MainTranslator]: Completed translation [2023-04-01 10:53:07,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:07 WrapperNode [2023-04-01 10:53:07,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 10:53:07,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 10:53:07,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 10:53:07,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 10:53:07,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:07" (1/1) ... [2023-04-01 10:53:07,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:07" (1/1) ... [2023-04-01 10:53:07,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:07" (1/1) ... [2023-04-01 10:53:07,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:07" (1/1) ... [2023-04-01 10:53:07,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:07" (1/1) ... [2023-04-01 10:53:07,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:07" (1/1) ... [2023-04-01 10:53:07,951 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:07" (1/1) ... [2023-04-01 10:53:07,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:07" (1/1) ... [2023-04-01 10:53:07,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 10:53:07,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 10:53:07,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 10:53:07,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 10:53:07,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:07" (1/1) ... [2023-04-01 10:53:07,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 10:53:07,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 10:53:07,998 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) [2023-04-01 10:53:08,024 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 [2023-04-01 10:53:08,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 10:53:08,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 10:53:08,043 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 10:53:08,043 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-01 10:53:08,044 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2023-04-01 10:53:08,044 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-01 10:53:08,045 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 10:53:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 10:53:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 10:53:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 10:53:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 10:53:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 10:53:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 10:53:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 10:53:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 10:53:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2023-04-01 10:53:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 10:53:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 10:53:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 10:53:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 10:53:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 10:53:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 10:53:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 10:53:08,137 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 10:53:08,138 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 10:53:08,353 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 10:53:08,385 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 10:53:08,385 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 10:53:08,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:53:08 BoogieIcfgContainer [2023-04-01 10:53:08,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 10:53:08,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 10:53:08,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 10:53:08,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 10:53:08,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:53:07" (1/3) ... [2023-04-01 10:53:08,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5593defb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:53:08, skipping insertion in model container [2023-04-01 10:53:08,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:07" (2/3) ... [2023-04-01 10:53:08,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5593defb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:53:08, skipping insertion in model container [2023-04-01 10:53:08,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:53:08" (3/3) ... [2023-04-01 10:53:08,394 INFO L112 eAbstractionObserver]: Analyzing ICFG test23-1.c [2023-04-01 10:53:08,411 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 10:53:08,411 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 10:53:08,471 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 10:53:08,480 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;@4dfbd3bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 10:53:08,480 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 10:53:08,484 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 10:53:08,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-04-01 10:53:08,493 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:53:08,493 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 10:53:08,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:53:08,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:53:08,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1538818834, now seen corresponding path program 1 times [2023-04-01 10:53:08,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:53:08,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051426398] [2023-04-01 10:53:08,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:53:08,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:53:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:53:08,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 10:53:08,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:53:08,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051426398] [2023-04-01 10:53:08,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051426398] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:53:08,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:53:08,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 10:53:08,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646561295] [2023-04-01 10:53:08,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:53:08,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 10:53:08,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:53:08,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 10:53:08,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 10:53:08,792 INFO L87 Difference]: Start difference. First operand has 28 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-01 10:53:08,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:53:08,823 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2023-04-01 10:53:08,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 10:53:08,825 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 23 [2023-04-01 10:53:08,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:53:08,832 INFO L225 Difference]: With dead ends: 40 [2023-04-01 10:53:08,832 INFO L226 Difference]: Without dead ends: 23 [2023-04-01 10:53:08,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 10:53:08,838 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 10:53:08,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 10:53:08,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-04-01 10:53:08,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-04-01 10:53:08,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 10:53:08,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-04-01 10:53:08,877 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 23 [2023-04-01 10:53:08,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:53:08,880 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-04-01 10:53:08,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-01 10:53:08,880 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-04-01 10:53:08,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-01 10:53:08,883 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:53:08,883 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 10:53:08,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 10:53:08,883 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:53:08,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:53:08,884 INFO L85 PathProgramCache]: Analyzing trace with hash -937668244, now seen corresponding path program 1 times [2023-04-01 10:53:08,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:53:08,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877858965] [2023-04-01 10:53:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:53:08,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:53:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:53:09,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 10:53:09,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:53:09,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877858965] [2023-04-01 10:53:09,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877858965] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:53:09,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:53:09,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 10:53:09,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862494674] [2023-04-01 10:53:09,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:53:09,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 10:53:09,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:53:09,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 10:53:09,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 10:53:09,415 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-01 10:53:09,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:53:09,486 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2023-04-01 10:53:09,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 10:53:09,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 24 [2023-04-01 10:53:09,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:53:09,489 INFO L225 Difference]: With dead ends: 32 [2023-04-01 10:53:09,489 INFO L226 Difference]: Without dead ends: 25 [2023-04-01 10:53:09,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 10:53:09,491 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 10:53:09,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 10:53:09,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-04-01 10:53:09,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-04-01 10:53:09,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 10:53:09,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2023-04-01 10:53:09,497 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 24 [2023-04-01 10:53:09,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:53:09,498 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2023-04-01 10:53:09,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-01 10:53:09,498 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2023-04-01 10:53:09,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-01 10:53:09,499 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:53:09,499 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 10:53:09,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 10:53:09,499 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:53:09,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:53:09,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1992315953, now seen corresponding path program 1 times [2023-04-01 10:53:09,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:53:09,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268651220] [2023-04-01 10:53:09,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:53:09,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:53:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:53:09,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 10:53:09,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:53:09,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268651220] [2023-04-01 10:53:09,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268651220] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 10:53:09,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50111968] [2023-04-01 10:53:09,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:53:09,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 10:53:09,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 10:53:09,816 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) [2023-04-01 10:53:09,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 10:53:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:53:09,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-01 10:53:09,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 10:53:10,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-04-01 10:53:10,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-04-01 10:53:10,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 10:53:10,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 10:53:10,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 10:53:10,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50111968] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 10:53:10,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1142191995] [2023-04-01 10:53:10,237 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-04-01 10:53:10,237 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 10:53:10,240 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 10:53:10,244 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 10:53:10,245 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 10:53:10,462 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 54 for LOIs [2023-04-01 10:53:11,554 INFO L197 IcfgInterpreter]: Interpreting procedure check with input of size 71 for LOIs [2023-04-01 10:53:11,570 INFO L197 IcfgInterpreter]: Interpreting procedure get_dummy with input of size 51 for LOIs [2023-04-01 10:53:11,590 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 22 for LOIs [2023-04-01 10:53:11,605 INFO L197 IcfgInterpreter]: Interpreting procedure init with input of size 54 for LOIs [2023-04-01 10:53:11,626 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 10:53:13,378 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '378#(and (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= |~#d2~0.offset| 0) (= main_~pd2~0.offset main_~pd1~0.offset) (= |~#d1~0.base| 4) (not (= (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset) main_~i~0)) (= 5 |~#d2~0.base|) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= main_~pd2~0.base main_~pa~0.base) (= (mod (+ (* main_~pd1~0.offset 3) main_~pa~0.offset) 4) 0) (not (= |#StackHeapBarrier| 0)) (= (select |#valid| 4) 1) (= 72 (select |#length| 5)) (= (select |#valid| 1) 1) (not (= (div (+ (* (- 1) main_~pd1~0.offset) main_~pa~0.offset) 4) 12)) (= main_~pa~0.base main_~pd1~0.base) (= (select |#valid| 0) 0) (= 72 (select |#length| 4)) (= |~#d1~0.offset| 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-01 10:53:13,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 10:53:13,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 10:53:13,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2023-04-01 10:53:13,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696939549] [2023-04-01 10:53:13,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 10:53:13,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 10:53:13,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:53:13,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 10:53:13,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=462, Unknown=9, NotChecked=0, Total=552 [2023-04-01 10:53:13,382 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-01 10:53:13,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:53:13,475 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2023-04-01 10:53:13,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 10:53:13,476 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 26 [2023-04-01 10:53:13,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:53:13,477 INFO L225 Difference]: With dead ends: 38 [2023-04-01 10:53:13,477 INFO L226 Difference]: Without dead ends: 31 [2023-04-01 10:53:13,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=116, Invalid=631, Unknown=9, NotChecked=0, Total=756 [2023-04-01 10:53:13,479 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 10:53:13,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 74 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 10:53:13,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-04-01 10:53:13,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-04-01 10:53:13,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 10:53:13,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2023-04-01 10:53:13,485 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 26 [2023-04-01 10:53:13,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:53:13,485 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2023-04-01 10:53:13,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-01 10:53:13,486 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2023-04-01 10:53:13,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-04-01 10:53:13,486 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:53:13,486 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 10:53:13,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 10:53:13,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 10:53:13,693 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:53:13,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:53:13,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1788875520, now seen corresponding path program 2 times [2023-04-01 10:53:13,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:53:13,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720482963] [2023-04-01 10:53:13,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:53:13,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:53:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:53:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 10:53:14,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:53:14,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720482963] [2023-04-01 10:53:14,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720482963] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 10:53:14,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769716375] [2023-04-01 10:53:14,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 10:53:14,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 10:53:14,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 10:53:14,066 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) [2023-04-01 10:53:14,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 10:53:14,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-04-01 10:53:14,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 10:53:14,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 17 conjunts are in the unsatisfiable core [2023-04-01 10:53:14,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 10:53:14,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-04-01 10:53:14,321 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 10:53:14,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 12 [2023-04-01 10:53:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 10:53:14,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 10:53:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 10:53:14,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769716375] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 10:53:14,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2020767275] [2023-04-01 10:53:14,417 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-04-01 10:53:14,417 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 10:53:14,418 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 10:53:14,418 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 10:53:14,418 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 10:53:14,498 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 54 for LOIs [2023-04-01 10:53:15,062 INFO L197 IcfgInterpreter]: Interpreting procedure check with input of size 71 for LOIs [2023-04-01 10:53:15,074 INFO L197 IcfgInterpreter]: Interpreting procedure get_dummy with input of size 51 for LOIs [2023-04-01 10:53:15,100 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 22 for LOIs [2023-04-01 10:53:15,121 INFO L197 IcfgInterpreter]: Interpreting procedure init with input of size 54 for LOIs [2023-04-01 10:53:15,136 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 10:53:16,648 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '709#(and (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= |~#d2~0.offset| 0) (= main_~pd2~0.offset main_~pd1~0.offset) (= |~#d1~0.base| 4) (not (= (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset) main_~i~0)) (= 5 |~#d2~0.base|) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= main_~pd2~0.base main_~pa~0.base) (= (mod (+ (* main_~pd1~0.offset 3) main_~pa~0.offset) 4) 0) (not (= |#StackHeapBarrier| 0)) (= (select |#valid| 4) 1) (= 72 (select |#length| 5)) (= (select |#valid| 1) 1) (not (= (div (+ (* (- 1) main_~pd1~0.offset) main_~pa~0.offset) 4) 12)) (= main_~pa~0.base main_~pd1~0.base) (= (select |#valid| 0) 0) (= 72 (select |#length| 4)) (= |~#d1~0.offset| 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-01 10:53:16,654 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 10:53:16,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 10:53:16,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2023-04-01 10:53:16,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916412233] [2023-04-01 10:53:16,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 10:53:16,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 10:53:16,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:53:16,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 10:53:16,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=723, Unknown=9, NotChecked=0, Total=870 [2023-04-01 10:53:16,659 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-01 10:53:16,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:53:16,887 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2023-04-01 10:53:16,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-01 10:53:16,888 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 32 [2023-04-01 10:53:16,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:53:16,889 INFO L225 Difference]: With dead ends: 50 [2023-04-01 10:53:16,889 INFO L226 Difference]: Without dead ends: 43 [2023-04-01 10:53:16,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 71 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=266, Invalid=1207, Unknown=9, NotChecked=0, Total=1482 [2023-04-01 10:53:16,891 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 10:53:16,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 60 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 10:53:16,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-04-01 10:53:16,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-04-01 10:53:16,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 10:53:16,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2023-04-01 10:53:16,898 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 32 [2023-04-01 10:53:16,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:53:16,899 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2023-04-01 10:53:16,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-01 10:53:16,899 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2023-04-01 10:53:16,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-04-01 10:53:16,900 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:53:16,900 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 10:53:16,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 10:53:17,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-04-01 10:53:17,107 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:53:17,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:53:17,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1241860318, now seen corresponding path program 3 times [2023-04-01 10:53:17,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:53:17,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462798322] [2023-04-01 10:53:17,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:53:17,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:53:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:53:17,498 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 10:53:17,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:53:17,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462798322] [2023-04-01 10:53:17,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462798322] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 10:53:17,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491416775] [2023-04-01 10:53:17,498 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-01 10:53:17,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 10:53:17,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 10:53:17,501 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) [2023-04-01 10:53:17,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 10:53:17,571 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-01 10:53:17,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 10:53:17,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 25 conjunts are in the unsatisfiable core [2023-04-01 10:53:17,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 10:53:17,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-04-01 10:53:17,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-04-01 10:53:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 10:53:17,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 10:53:17,849 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 10:53:17,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491416775] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 10:53:17,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1934917054] [2023-04-01 10:53:17,851 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-04-01 10:53:17,851 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 10:53:17,851 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 10:53:17,851 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 10:53:17,851 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 10:53:17,936 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 54 for LOIs [2023-04-01 10:53:18,450 INFO L197 IcfgInterpreter]: Interpreting procedure check with input of size 71 for LOIs [2023-04-01 10:53:18,463 INFO L197 IcfgInterpreter]: Interpreting procedure get_dummy with input of size 51 for LOIs [2023-04-01 10:53:18,480 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 22 for LOIs [2023-04-01 10:53:18,490 INFO L197 IcfgInterpreter]: Interpreting procedure init with input of size 54 for LOIs [2023-04-01 10:53:18,502 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 10:53:19,988 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1158#(and (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= |~#d2~0.offset| 0) (= main_~pd2~0.offset main_~pd1~0.offset) (= |~#d1~0.base| 4) (not (= (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset) main_~i~0)) (= 5 |~#d2~0.base|) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= main_~pd2~0.base main_~pa~0.base) (= (mod (+ (* main_~pd1~0.offset 3) main_~pa~0.offset) 4) 0) (not (= |#StackHeapBarrier| 0)) (= (select |#valid| 4) 1) (= 72 (select |#length| 5)) (= (select |#valid| 1) 1) (not (= (div (+ (* (- 1) main_~pd1~0.offset) main_~pa~0.offset) 4) 12)) (= main_~pa~0.base main_~pd1~0.base) (= (select |#valid| 0) 0) (= 72 (select |#length| 4)) (= |~#d1~0.offset| 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-01 10:53:19,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 10:53:19,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 10:53:19,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 16 [2023-04-01 10:53:19,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530463589] [2023-04-01 10:53:19,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 10:53:19,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 10:53:19,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:53:19,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 10:53:19,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=707, Unknown=9, NotChecked=0, Total=870 [2023-04-01 10:53:19,990 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-01 10:53:20,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:53:20,188 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2023-04-01 10:53:20,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-01 10:53:20,188 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 44 [2023-04-01 10:53:20,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:53:20,189 INFO L225 Difference]: With dead ends: 52 [2023-04-01 10:53:20,189 INFO L226 Difference]: Without dead ends: 45 [2023-04-01 10:53:20,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 105 SyntacticMatches, 13 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=320, Invalid=1311, Unknown=9, NotChecked=0, Total=1640 [2023-04-01 10:53:20,191 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 10:53:20,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 88 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 10:53:20,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-04-01 10:53:20,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-04-01 10:53:20,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 10:53:20,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2023-04-01 10:53:20,197 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 44 [2023-04-01 10:53:20,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:53:20,197 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2023-04-01 10:53:20,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-01 10:53:20,198 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2023-04-01 10:53:20,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-04-01 10:53:20,199 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:53:20,199 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 10:53:20,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 10:53:20,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 10:53:20,405 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:53:20,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:53:20,405 INFO L85 PathProgramCache]: Analyzing trace with hash 575223587, now seen corresponding path program 4 times [2023-04-01 10:53:20,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:53:20,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173736244] [2023-04-01 10:53:20,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:53:20,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:53:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 10:53:20,436 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 10:53:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 10:53:20,477 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-01 10:53:20,477 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 10:53:20,478 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 10:53:20,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 10:53:20,483 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-04-01 10:53:20,487 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 10:53:20,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 10:53:20 BoogieIcfgContainer [2023-04-01 10:53:20,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 10:53:20,534 INFO L158 Benchmark]: Toolchain (without parser) took 12822.70ms. Allocated memory was 248.5MB in the beginning and 431.0MB in the end (delta: 182.5MB). Free memory was 213.6MB in the beginning and 213.9MB in the end (delta: -324.3kB). Peak memory consumption was 183.7MB. Max. memory is 8.0GB. [2023-04-01 10:53:20,534 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 128.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 10:53:20,534 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.66ms. Allocated memory is still 248.5MB. Free memory was 213.6MB in the beginning and 203.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 10:53:20,535 INFO L158 Benchmark]: Boogie Preprocessor took 31.97ms. Allocated memory is still 248.5MB. Free memory was 202.6MB in the beginning and 201.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-01 10:53:20,535 INFO L158 Benchmark]: RCFGBuilder took 432.70ms. Allocated memory is still 248.5MB. Free memory was 201.0MB in the beginning and 186.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-04-01 10:53:20,535 INFO L158 Benchmark]: TraceAbstraction took 12144.43ms. Allocated memory was 248.5MB in the beginning and 431.0MB in the end (delta: 182.5MB). Free memory was 185.8MB in the beginning and 213.9MB in the end (delta: -28.1MB). Peak memory consumption was 155.4MB. Max. memory is 8.0GB. [2023-04-01 10:53:20,536 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 128.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 206.66ms. Allocated memory is still 248.5MB. Free memory was 213.6MB in the beginning and 203.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.97ms. Allocated memory is still 248.5MB. Free memory was 202.6MB in the beginning and 201.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 432.70ms. Allocated memory is still 248.5MB. Free memory was 201.0MB in the beginning and 186.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 12144.43ms. Allocated memory was 248.5MB in the beginning and 431.0MB in the end (delta: 182.5MB). Free memory was 185.8MB in the beginning and 213.9MB in the end (delta: -28.1MB). Peak memory consumption was 155.4MB. 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 - CounterExampleResult [Line: 52]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] struct dummy d1, d2; [L35] CALL init() VAL [d1={4:0}, d2={5:0}] [L16] d1.a = __VERIFIER_nondet_int() [L17] d1.b = __VERIFIER_nondet_int() [L19] d2.a = __VERIFIER_nondet_int() [L20] d2.b = __VERIFIER_nondet_int() [L35] RET init() VAL [d1={4:0}, d2={5:0}] [L36] CALL, EXPR get_dummy() VAL [d1={4:0}, d2={5:0}] [L25] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L36] RET, EXPR get_dummy() VAL [d1={4:0}, d2={5:0}, get_dummy()={5:0}] [L36] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L36] CALL, EXPR get_dummy() VAL [d1={4:0}, d2={5:0}] [L25] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L36] RET, EXPR get_dummy() VAL [d1={4:0}, d2={5:0}, get_dummy()={5:0}, pd1={5:0}] [L36] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L37] int i = __VERIFIER_nondet_int(); [L38] COND TRUE pd1 != 0 && pd1 == pd2 && i >= 0 && i < 10 [L39] pd2->array[i] = i [L40] int *pa = &pd1->array[i]; [L41] EXPR pd2->array[i] [L41] i = pd2->array[i] - 10 [L42] EXPR \read(*pa) VAL [\read(*pa)=0, d1={4:0}, d2={5:0}, i=-10, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={4:0}, d2={5:0}, i=-9, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] EXPR \read(*pa) VAL [\read(*pa)=0, d1={4:0}, d2={5:0}, i=-9, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={4:0}, d2={5:0}, i=-8, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] EXPR \read(*pa) VAL [\read(*pa)=0, d1={4:0}, d2={5:0}, i=-8, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={4:0}, d2={5:0}, i=-7, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] EXPR \read(*pa) VAL [\read(*pa)=0, d1={4:0}, d2={5:0}, i=-7, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={4:0}, d2={5:0}, i=-6, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] EXPR \read(*pa) VAL [\read(*pa)=0, d1={4:0}, d2={5:0}, i=-6, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={4:0}, d2={5:0}, i=-5, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] EXPR \read(*pa) VAL [\read(*pa)=0, d1={4:0}, d2={5:0}, i=-5, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={4:0}, d2={5:0}, i=-4, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] EXPR \read(*pa) VAL [\read(*pa)=0, d1={4:0}, d2={5:0}, i=-4, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={4:0}, d2={5:0}, i=-3, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] EXPR \read(*pa) VAL [\read(*pa)=0, d1={4:0}, d2={5:0}, i=-3, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={4:0}, d2={5:0}, i=-2, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] EXPR \read(*pa) VAL [\read(*pa)=0, d1={4:0}, d2={5:0}, i=-2, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={4:0}, d2={5:0}, i=-1, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] EXPR \read(*pa) VAL [\read(*pa)=0, d1={4:0}, d2={5:0}, i=-1, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={4:0}, d2={5:0}, i=0, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] EXPR \read(*pa) VAL [\read(*pa)=0, d1={4:0}, d2={5:0}, i=0, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={4:0}, d2={5:0}, i=1, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] EXPR \read(*pa) VAL [\read(*pa)=0, d1={4:0}, d2={5:0}, i=1, pa={5:8}, pd1={5:0}, pd2={5:0}] [L42] COND FALSE !(i <= *pa) [L45] CALL, EXPR check(pd2, i) VAL [\old(i)=1, d1={4:0}, d2={5:0}, s1={5:0}] [L30] EXPR s1->array[i] [L30] return s1->array[i] == i; [L45] RET, EXPR check(pd2, i) VAL [check(pd2, i)=0, d1={4:0}, d2={5:0}, i=1, pa={5:8}, pd1={5:0}, pd2={5:0}] [L45] COND TRUE !check(pd2, i) [L52] reach_error() VAL [d1={4:0}, d2={5:0}, i=1, pa={5:8}, pd1={5:0}, pd2={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.0s, OverallIterations: 6, TraceHistogramMax: 12, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 294 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 196 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 201 IncrementalHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 98 mSDtfsCounter, 201 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 364 GetRequests, 239 SyntacticMatches, 20 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=5, InterpolantAutomatonStates: 62, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 297 NumberOfCodeBlocks, 291 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 342 ConstructedInterpolants, 0 QuantifiedInterpolants, 1424 SizeOfPredicates, 37 NumberOfNonLiveVariables, 527 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 22/418 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 RESULT: Ultimate proved your program to be incorrect! [2023-04-01 10:53:20,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...