/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/ldv-regression/nested_structure_ptr-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 00:52:04,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 00:52:04,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 00:52:04,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 00:52:04,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 00:52:04,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 00:52:04,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 00:52:04,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 00:52:04,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 00:52:04,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 00:52:04,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 00:52:04,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 00:52:04,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 00:52:04,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 00:52:04,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 00:52:04,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 00:52:04,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 00:52:04,612 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 00:52:04,629 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 00:52:04,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 00:52:04,630 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 00:52:04,630 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 00:52:04,631 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 00:52:04,632 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 00:52:04,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 00:52:04,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 00:52:04,632 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 00:52:04,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 00:52:04,633 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 00:52:04,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 00:52:04,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 00:52:04,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 00:52:04,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 00:52:04,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 00:52:04,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 00:52:04,634 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 00:52:04,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 00:52:04,634 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 00:52:04,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 00:52:04,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 00:52:04,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 00:52:04,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 00:52:04,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 00:52:04,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 00:52:04,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 00:52:04,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 00:52:04,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 00:52:04,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 00:52:04,636 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 00:52:04,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 00:52:04,636 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 00:52:04,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 00:52:04,637 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 00:52:04,637 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 00:52:04,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 00:52:04,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 00:52:04,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 00:52:04,903 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 00:52:04,903 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 00:52:04,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/nested_structure_ptr-2.i [2023-04-02 00:52:06,075 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 00:52:06,286 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 00:52:06,286 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/nested_structure_ptr-2.i [2023-04-02 00:52:06,294 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb67792de/1ec88a57a7614ec0a0d7ecfb1d674ce1/FLAG8c8da020d [2023-04-02 00:52:06,309 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb67792de/1ec88a57a7614ec0a0d7ecfb1d674ce1 [2023-04-02 00:52:06,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 00:52:06,313 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 00:52:06,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 00:52:06,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 00:52:06,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 00:52:06,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 12:52:06" (1/1) ... [2023-04-02 00:52:06,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@450bbbb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:06, skipping insertion in model container [2023-04-02 00:52:06,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 12:52:06" (1/1) ... [2023-04-02 00:52:06,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 00:52:06,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 00:52:06,489 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_ptr-2.i[822,835] [2023-04-02 00:52:06,502 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 00:52:06,509 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 00:52:06,522 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_ptr-2.i[822,835] [2023-04-02 00:52:06,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 00:52:06,542 INFO L208 MainTranslator]: Completed translation [2023-04-02 00:52:06,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:06 WrapperNode [2023-04-02 00:52:06,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 00:52:06,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 00:52:06,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 00:52:06,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 00:52:06,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:06" (1/1) ... [2023-04-02 00:52:06,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:06" (1/1) ... [2023-04-02 00:52:06,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:06" (1/1) ... [2023-04-02 00:52:06,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:06" (1/1) ... [2023-04-02 00:52:06,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:06" (1/1) ... [2023-04-02 00:52:06,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:06" (1/1) ... [2023-04-02 00:52:06,567 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:06" (1/1) ... [2023-04-02 00:52:06,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:06" (1/1) ... [2023-04-02 00:52:06,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 00:52:06,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 00:52:06,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 00:52:06,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 00:52:06,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:06" (1/1) ... [2023-04-02 00:52:06,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 00:52:06,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:52:06,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 00:52:06,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 00:52:06,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 00:52:06,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 00:52:06,640 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 00:52:06,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 00:52:06,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 00:52:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 00:52:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 00:52:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 00:52:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 00:52:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 00:52:06,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 00:52:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 00:52:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 00:52:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-02 00:52:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 00:52:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-02 00:52:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 00:52:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 00:52:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 00:52:06,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 00:52:06,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 00:52:06,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 00:52:06,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 00:52:06,713 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 00:52:06,714 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 00:52:06,847 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 00:52:06,851 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 00:52:06,852 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 00:52:06,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 12:52:06 BoogieIcfgContainer [2023-04-02 00:52:06,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 00:52:06,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 00:52:06,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 00:52:06,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 00:52:06,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 12:52:06" (1/3) ... [2023-04-02 00:52:06,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11fef894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 12:52:06, skipping insertion in model container [2023-04-02 00:52:06,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:06" (2/3) ... [2023-04-02 00:52:06,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11fef894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 12:52:06, skipping insertion in model container [2023-04-02 00:52:06,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 12:52:06" (3/3) ... [2023-04-02 00:52:06,872 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_structure_ptr-2.i [2023-04-02 00:52:06,888 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 00:52:06,888 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 00:52:06,935 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 00:52:06,941 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@58e0cd08, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 00:52:06,941 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 00:52:06,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 00:52:06,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-04-02 00:52:06,951 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:52:06,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:52:06,952 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:52:06,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:52:06,956 INFO L85 PathProgramCache]: Analyzing trace with hash -419055456, now seen corresponding path program 1 times [2023-04-02 00:52:06,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:52:06,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783331709] [2023-04-02 00:52:06,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:52:06,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:52:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:08,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:52:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:08,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:52:08,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:52:08,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783331709] [2023-04-02 00:52:08,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783331709] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:52:08,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:52:08,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 00:52:08,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171183255] [2023-04-02 00:52:08,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:52:08,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 00:52:08,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:52:08,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 00:52:08,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 00:52:08,067 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 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 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 00:52:08,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:52:08,143 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2023-04-02 00:52:08,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 00:52:08,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-04-02 00:52:08,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:52:08,150 INFO L225 Difference]: With dead ends: 25 [2023-04-02 00:52:08,150 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 00:52:08,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-04-02 00:52:08,155 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 11 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 00:52:08,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 28 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 00:52:08,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 00:52:08,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 00:52:08,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-02 00:52:08,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 00:52:08,177 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2023-04-02 00:52:08,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:52:08,177 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 00:52:08,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 00:52:08,178 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 00:52:08,178 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 00:52:08,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 00:52:08,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 00:52:08,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 00:52:08,201 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2023-04-02 00:52:08,201 INFO L899 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2023-04-02 00:52:08,201 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 12) no Hoare annotation was computed. [2023-04-02 00:52:08,202 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (= |main_#t~mem5| 4) [2023-04-02 00:52:08,202 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 38 47) no Hoare annotation was computed. [2023-04-02 00:52:08,202 INFO L899 garLoopResultBuilder]: For program point L45-1(line 45) no Hoare annotation was computed. [2023-04-02 00:52:08,202 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 38 47) the Hoare annotation is: true [2023-04-02 00:52:08,202 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 38 47) no Hoare annotation was computed. [2023-04-02 00:52:08,202 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2023-04-02 00:52:08,203 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2023-04-02 00:52:08,203 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 00:52:08,203 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 00:52:08,203 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-02 00:52:08,203 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 00:52:08,203 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 00:52:08,203 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2023-04-02 00:52:08,204 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2023-04-02 00:52:08,204 INFO L899 garLoopResultBuilder]: For program point L14-2(lines 13 18) no Hoare annotation was computed. [2023-04-02 00:52:08,204 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 13 18) no Hoare annotation was computed. [2023-04-02 00:52:08,204 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 13 18) the Hoare annotation is: true [2023-04-02 00:52:08,204 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2023-04-02 00:52:08,208 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-04-02 00:52:08,210 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 00:52:08,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 12:52:08 BoogieIcfgContainer [2023-04-02 00:52:08,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 00:52:08,214 INFO L158 Benchmark]: Toolchain (without parser) took 1901.82ms. Allocated memory is still 293.6MB. Free memory was 238.1MB in the beginning and 139.9MB in the end (delta: 98.2MB). Peak memory consumption was 99.3MB. Max. memory is 8.0GB. [2023-04-02 00:52:08,215 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 186.6MB. Free memory is still 137.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 00:52:08,215 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.05ms. Allocated memory is still 293.6MB. Free memory was 237.8MB in the beginning and 227.6MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 00:52:08,216 INFO L158 Benchmark]: Boogie Preprocessor took 30.63ms. Allocated memory is still 293.6MB. Free memory was 227.6MB in the beginning and 225.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 00:52:08,216 INFO L158 Benchmark]: RCFGBuilder took 278.07ms. Allocated memory is still 293.6MB. Free memory was 225.8MB in the beginning and 213.9MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-02 00:52:08,216 INFO L158 Benchmark]: TraceAbstraction took 1348.26ms. Allocated memory is still 293.6MB. Free memory was 213.2MB in the beginning and 139.9MB in the end (delta: 73.3MB). Peak memory consumption was 74.1MB. Max. memory is 8.0GB. [2023-04-02 00:52:08,218 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 186.6MB. Free memory is still 137.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 226.05ms. Allocated memory is still 293.6MB. Free memory was 237.8MB in the beginning and 227.6MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.63ms. Allocated memory is still 293.6MB. Free memory was 227.6MB in the beginning and 225.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 278.07ms. Allocated memory is still 293.6MB. Free memory was 225.8MB in the beginning and 213.9MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1348.26ms. Allocated memory is still 293.6MB. Free memory was 213.2MB in the beginning and 139.9MB in the end (delta: 73.3MB). Peak memory consumption was 74.1MB. 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, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28 IncrementalHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 7 mSDtfsCounter, 28 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 14 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 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! [2023-04-02 00:52:08,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...