/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/ldv-regression/nested_structure_noptr-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 04:49:09,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 04:49:09,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 04:49:09,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 04:49:09,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 04:49:09,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 04:49:09,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 04:49:09,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 04:49:09,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 04:49:09,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 04:49:09,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 04:49:09,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 04:49:09,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 04:49:09,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 04:49:09,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 04:49:09,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 04:49:09,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 04:49:09,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 04:49:09,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 04:49:09,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 04:49:09,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 04:49:09,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 04:49:09,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 04:49:09,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 04:49:09,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 04:49:09,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 04:49:09,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 04:49:09,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 04:49:09,337 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 04:49:09,360 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 04:49:09,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 04:49:09,360 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 04:49:09,360 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 04:49:09,361 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 04:49:09,361 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 04:49:09,361 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 04:49:09,361 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 04:49:09,361 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 04:49:09,361 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 04:49:09,361 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 04:49:09,361 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 04:49:09,361 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 04:49:09,361 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 04:49:09,361 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 04:49:09,362 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 04:49:09,362 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 04:49:09,362 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 04:49:09,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 04:49:09,362 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 04:49:09,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 04:49:09,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 04:49:09,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 04:49:09,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 04:49:09,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 04:49:09,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 04:49:09,363 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 04:49:09,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 04:49:09,363 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 04:49:09,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 04:49:09,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 04:49:09,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 04:49:09,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:49:09,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 04:49:09,363 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 04:49:09,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 04:49:09,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 04:49:09,364 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 04:49:09,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 04:49:09,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 04:49:09,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 04:49:09,364 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 04:49:09,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 04:49:09,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 04:49:09,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 04:49:09,636 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 04:49:09,637 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 04:49:09,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/nested_structure_noptr-1.i [2023-04-01 04:49:10,679 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 04:49:10,829 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 04:49:10,829 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/nested_structure_noptr-1.i [2023-04-01 04:49:10,833 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4d3cb45e/966590fd96e54ec98817244adaaf0390/FLAG64a8212d4 [2023-04-01 04:49:10,843 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4d3cb45e/966590fd96e54ec98817244adaaf0390 [2023-04-01 04:49:10,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 04:49:10,846 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 04:49:10,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 04:49:10,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 04:49:10,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 04:49:10,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:49:10" (1/1) ... [2023-04-01 04:49:10,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65d2705a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:10, skipping insertion in model container [2023-04-01 04:49:10,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:49:10" (1/1) ... [2023-04-01 04:49:10,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 04:49:10,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 04:49:10,958 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/nested_structure_noptr-1.i[824,837] [2023-04-01 04:49:10,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:49:10,972 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 04:49:10,980 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/nested_structure_noptr-1.i[824,837] [2023-04-01 04:49:10,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:49:10,992 INFO L208 MainTranslator]: Completed translation [2023-04-01 04:49:10,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:10 WrapperNode [2023-04-01 04:49:10,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 04:49:10,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 04:49:10,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 04:49:10,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 04:49:11,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:10" (1/1) ... [2023-04-01 04:49:11,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:10" (1/1) ... [2023-04-01 04:49:11,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:10" (1/1) ... [2023-04-01 04:49:11,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:10" (1/1) ... [2023-04-01 04:49:11,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:10" (1/1) ... [2023-04-01 04:49:11,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:10" (1/1) ... [2023-04-01 04:49:11,010 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:10" (1/1) ... [2023-04-01 04:49:11,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:10" (1/1) ... [2023-04-01 04:49:11,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 04:49:11,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 04:49:11,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 04:49:11,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 04:49:11,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:10" (1/1) ... [2023-04-01 04:49:11,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:49:11,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:49:11,040 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 04:49:11,042 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 04:49:11,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 04:49:11,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 04:49:11,069 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 04:49:11,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 04:49:11,069 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 04:49:11,069 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 04:49:11,069 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 04:49:11,069 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 04:49:11,069 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 04:49:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 04:49:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 04:49:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 04:49:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 04:49:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 04:49:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 04:49:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 04:49:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 04:49:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 04:49:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 04:49:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 04:49:11,135 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 04:49:11,137 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 04:49:11,244 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 04:49:11,258 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 04:49:11,259 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 04:49:11,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:49:11 BoogieIcfgContainer [2023-04-01 04:49:11,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 04:49:11,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 04:49:11,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 04:49:11,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 04:49:11,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 04:49:10" (1/3) ... [2023-04-01 04:49:11,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47af6a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:49:11, skipping insertion in model container [2023-04-01 04:49:11,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:10" (2/3) ... [2023-04-01 04:49:11,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47af6a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:49:11, skipping insertion in model container [2023-04-01 04:49:11,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:49:11" (3/3) ... [2023-04-01 04:49:11,267 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_structure_noptr-1.i [2023-04-01 04:49:11,280 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 04:49:11,280 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 04:49:11,331 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 04:49:11,347 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;@3ed5a135, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 04:49:11,347 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 04:49:11,350 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 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) [2023-04-01 04:49:11,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-04-01 04:49:11,372 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:49:11,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:49:11,373 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:49:11,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:49:11,376 INFO L85 PathProgramCache]: Analyzing trace with hash -196980809, now seen corresponding path program 1 times [2023-04-01 04:49:11,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:49:11,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371858641] [2023-04-01 04:49:11,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:49:11,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:49:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:49:11,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 04:49:11,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:49:11,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371858641] [2023-04-01 04:49:11,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371858641] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:49:11,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 04:49:11,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 04:49:11,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44725648] [2023-04-01 04:49:11,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:49:11,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 04:49:11,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:49:11,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 04:49:11,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 04:49:11,745 INFO L87 Difference]: Start difference. First operand has 16 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 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 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2023-04-01 04:49:11,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:49:11,778 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2023-04-01 04:49:11,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 04:49:11,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 9 [2023-04-01 04:49:11,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:49:11,784 INFO L225 Difference]: With dead ends: 22 [2023-04-01 04:49:11,784 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 04:49:11,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 04:49:11,788 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 04:49:11,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 26 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 04:49:11,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 04:49:11,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 04:49:11,804 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) [2023-04-01 04:49:11,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 04:49:11,805 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2023-04-01 04:49:11,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:49:11,805 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 04:49:11,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2023-04-01 04:49:11,806 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 04:49:11,806 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 04:49:11,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 04:49:11,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 04:49:11,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 04:49:11,821 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2023-04-01 04:49:11,822 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 12) no Hoare annotation was computed. [2023-04-01 04:49:11,822 INFO L895 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (= |main_#t~mem1| 4) [2023-04-01 04:49:11,822 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 38 44) the Hoare annotation is: true [2023-04-01 04:49:11,822 INFO L899 garLoopResultBuilder]: For program point L42-1(line 42) no Hoare annotation was computed. [2023-04-01 04:49:11,822 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 38 44) no Hoare annotation was computed. [2023-04-01 04:49:11,823 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 04:49:11,823 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-01 04:49:11,823 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-01 04:49:11,823 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-01 04:49:11,823 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-01 04:49:11,823 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 04:49:11,823 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2023-04-01 04:49:11,823 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2023-04-01 04:49:11,823 INFO L899 garLoopResultBuilder]: For program point L14-2(lines 13 18) no Hoare annotation was computed. [2023-04-01 04:49:11,824 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 13 18) no Hoare annotation was computed. [2023-04-01 04:49:11,824 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 13 18) the Hoare annotation is: true [2023-04-01 04:49:11,824 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2023-04-01 04:49:11,826 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-04-01 04:49:11,829 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 04:49:11,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 04:49:11 BoogieIcfgContainer [2023-04-01 04:49:11,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 04:49:11,839 INFO L158 Benchmark]: Toolchain (without parser) took 992.83ms. Allocated memory was 183.5MB in the beginning and 265.3MB in the end (delta: 81.8MB). Free memory was 131.2MB in the beginning and 222.0MB in the end (delta: -90.8MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 04:49:11,839 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 183.5MB. Free memory was 129.9MB in the beginning and 129.7MB in the end (delta: 143.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 04:49:11,842 INFO L158 Benchmark]: CACSL2BoogieTranslator took 146.69ms. Allocated memory is still 183.5MB. Free memory was 130.9MB in the beginning and 120.8MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 04:49:11,843 INFO L158 Benchmark]: Boogie Preprocessor took 18.01ms. Allocated memory is still 183.5MB. Free memory was 120.8MB in the beginning and 119.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-01 04:49:11,845 INFO L158 Benchmark]: RCFGBuilder took 248.56ms. Allocated memory is still 183.5MB. Free memory was 119.4MB in the beginning and 108.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 04:49:11,845 INFO L158 Benchmark]: TraceAbstraction took 575.94ms. Allocated memory was 183.5MB in the beginning and 265.3MB in the end (delta: 81.8MB). Free memory was 108.2MB in the beginning and 222.0MB in the end (delta: -113.8MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 04:49:11,849 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 183.5MB. Free memory was 129.9MB in the beginning and 129.7MB in the end (delta: 143.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 146.69ms. Allocated memory is still 183.5MB. Free memory was 130.9MB in the beginning and 120.8MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.01ms. Allocated memory is still 183.5MB. Free memory was 120.8MB in the beginning and 119.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 248.56ms. Allocated memory is still 183.5MB. Free memory was 119.4MB in the beginning and 108.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 575.94ms. Allocated memory was 183.5MB in the beginning and 265.3MB in the end (delta: 81.8MB). Free memory was 108.2MB in the beginning and 222.0MB in the end (delta: -113.8MB). There was no memory consumed. 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: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 8 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 8 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be correct! [2023-04-01 04:49:11,867 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...