/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:35:54,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:35:54,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:35:54,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:35:54,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:35:54,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:35:54,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:35:54,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:35:54,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:35:54,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:35:54,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:35:54,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:35:54,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:35:54,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:35:54,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:35:54,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:35:54,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:35:54,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:35:54,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:35:54,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:35:54,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:35:54,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:35:54,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:35:54,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:35:54,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 15:35:54,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:35:54,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:35:54,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:35:54,729 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 15:35:54,751 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:35:54,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:35:54,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:35:54,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:35:54,753 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:35:54,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:35:54,754 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:35:54,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:35:54,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:35:54,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:35:54,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:35:54,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:35:54,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:35:54,755 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:35:54,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:35:54,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:35:54,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:35:54,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:35:54,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:35:54,756 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:35:54,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:35:54,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:35:54,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:35:54,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:35:54,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:35:54,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:35:54,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:35:54,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:35:54,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:35:54,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 15:35:55,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:35:55,058 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:35:55,061 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:35:55,063 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:35:55,063 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:35:55,064 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i [2020-08-18 15:35:55,122 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bc8576b0/55f48f2fa26d4a539d7b3d35168178d0/FLAG3ff3771c6 [2020-08-18 15:35:55,544 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:35:55,544 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i [2020-08-18 15:35:55,551 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bc8576b0/55f48f2fa26d4a539d7b3d35168178d0/FLAG3ff3771c6 [2020-08-18 15:35:55,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bc8576b0/55f48f2fa26d4a539d7b3d35168178d0 [2020-08-18 15:35:55,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:35:55,966 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:35:55,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:35:55,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:35:55,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:35:55,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:35:55" (1/1) ... [2020-08-18 15:35:55,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e42023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:55, skipping insertion in model container [2020-08-18 15:35:55,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:35:55" (1/1) ... [2020-08-18 15:35:55,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:35:56,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:35:56,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:35:56,171 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:35:56,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:35:56,202 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:35:56,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:56 WrapperNode [2020-08-18 15:35:56,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:35:56,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:35:56,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:35:56,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:35:56,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:56" (1/1) ... [2020-08-18 15:35:56,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:56" (1/1) ... [2020-08-18 15:35:56,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:56" (1/1) ... [2020-08-18 15:35:56,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:56" (1/1) ... [2020-08-18 15:35:56,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:56" (1/1) ... [2020-08-18 15:35:56,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:56" (1/1) ... [2020-08-18 15:35:56,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:56" (1/1) ... [2020-08-18 15:35:56,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:35:56,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:35:56,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:35:56,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:35:56,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:35:56,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:35:56,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:35:56,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 15:35:56,430 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2020-08-18 15:35:56,430 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:35:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:35:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 15:35:56,431 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2020-08-18 15:35:56,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:35:56,431 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:35:56,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:35:56,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:35:56,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:35:56,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:35:56,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:35:56,663 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:35:56,663 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 15:35:56,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:35:56 BoogieIcfgContainer [2020-08-18 15:35:56,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:35:56,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:35:56,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:35:56,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:35:56,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:35:55" (1/3) ... [2020-08-18 15:35:56,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4483c449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:35:56, skipping insertion in model container [2020-08-18 15:35:56,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:56" (2/3) ... [2020-08-18 15:35:56,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4483c449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:35:56, skipping insertion in model container [2020-08-18 15:35:56,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:35:56" (3/3) ... [2020-08-18 15:35:56,682 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc_loop.i [2020-08-18 15:35:56,697 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:35:56,704 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:35:56,720 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:35:56,741 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:35:56,742 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:35:56,742 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:35:56,742 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:35:56,742 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:35:56,742 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:35:56,742 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:35:56,742 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:35:56,758 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-08-18 15:35:56,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-18 15:35:56,765 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:35:56,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:35:56,766 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:35:56,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:35:56,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1626450083, now seen corresponding path program 1 times [2020-08-18 15:35:56,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:35:56,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126428365] [2020-08-18 15:35:56,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:35:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:35:57,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:35:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:35:57,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:35:57,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126428365] [2020-08-18 15:35:57,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:35:57,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:35:57,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956788865] [2020-08-18 15:35:57,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:35:57,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:35:57,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:35:57,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:35:57,161 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 8 states. [2020-08-18 15:35:57,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:35:57,598 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-08-18 15:35:57,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 15:35:57,600 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-08-18 15:35:57,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:35:57,609 INFO L225 Difference]: With dead ends: 55 [2020-08-18 15:35:57,609 INFO L226 Difference]: Without dead ends: 26 [2020-08-18 15:35:57,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-08-18 15:35:57,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-18 15:35:57,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-08-18 15:35:57,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-18 15:35:57,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-08-18 15:35:57,661 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 13 [2020-08-18 15:35:57,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:35:57,662 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-08-18 15:35:57,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:35:57,662 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-08-18 15:35:57,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 15:35:57,663 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:35:57,664 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:35:57,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:35:57,664 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:35:57,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:35:57,665 INFO L82 PathProgramCache]: Analyzing trace with hash -519824651, now seen corresponding path program 1 times [2020-08-18 15:35:57,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:35:57,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127250629] [2020-08-18 15:35:57,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:35:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:35:57,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:35:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:35:57,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:35:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:35:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:35:57,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127250629] [2020-08-18 15:35:57,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:35:57,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 15:35:57,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113175358] [2020-08-18 15:35:57,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:35:57,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:35:57,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:35:57,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:35:57,881 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 9 states. [2020-08-18 15:35:58,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:35:58,132 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-08-18 15:35:58,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 15:35:58,132 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-08-18 15:35:58,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:35:58,134 INFO L225 Difference]: With dead ends: 36 [2020-08-18 15:35:58,134 INFO L226 Difference]: Without dead ends: 34 [2020-08-18 15:35:58,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-08-18 15:35:58,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-08-18 15:35:58,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-08-18 15:35:58,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-18 15:35:58,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-08-18 15:35:58,147 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 21 [2020-08-18 15:35:58,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:35:58,147 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-08-18 15:35:58,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:35:58,149 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-08-18 15:35:58,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-18 15:35:58,150 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:35:58,150 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:35:58,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:35:58,153 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:35:58,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:35:58,153 INFO L82 PathProgramCache]: Analyzing trace with hash -2027370867, now seen corresponding path program 2 times [2020-08-18 15:35:58,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:35:58,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317019693] [2020-08-18 15:35:58,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:35:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:35:58,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:35:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:35:58,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:35:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:35:58,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:35:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:35:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-18 15:35:58,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317019693] [2020-08-18 15:35:58,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:35:58,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 15:35:58,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979935686] [2020-08-18 15:35:58,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:35:58,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:35:58,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:35:58,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:35:58,369 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 9 states. [2020-08-18 15:35:58,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:35:58,540 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2020-08-18 15:35:58,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 15:35:58,541 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-08-18 15:35:58,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:35:58,541 INFO L225 Difference]: With dead ends: 32 [2020-08-18 15:35:58,542 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 15:35:58,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-08-18 15:35:58,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 15:35:58,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 15:35:58,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 15:35:58,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 15:35:58,544 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-08-18 15:35:58,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:35:58,544 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 15:35:58,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:35:58,544 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 15:35:58,544 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 15:35:58,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:35:58,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 15:35:58,708 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 15:35:58,709 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~tmp~0.base |old(~tmp~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~tmp~0.offset |old(~tmp~0.offset)|) (= |old(#valid)| |#valid|)) [2020-08-18 15:35:58,709 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 15:35:58,709 INFO L271 CegarLoopResult]: At program point glob2ENTRY(lines 14 25) the Hoare annotation is: true [2020-08-18 15:35:58,709 INFO L268 CegarLoopResult]: For program point glob2EXIT(lines 14 25) no Hoare annotation was computed. [2020-08-18 15:35:58,710 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (or (not (<= |glob2_#in~pathlim.offset| ~tmp~0.offset)) (and (<= glob2_~p~0.offset ~tmp~0.offset) (<= glob2_~pathlim.offset ~tmp~0.offset) (= ~tmp~0.base glob2_~p~0.base)) (not (= ~tmp~0.base |glob2_#in~pathbuf.base|)) (not (<= (+ |glob2_#in~pathbuf.offset| 4) ~tmp~0.offset))) [2020-08-18 15:35:58,710 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-08-18 15:35:58,710 INFO L268 CegarLoopResult]: For program point L18-2(lines 18 22) no Hoare annotation was computed. [2020-08-18 15:35:58,710 INFO L264 CegarLoopResult]: At program point L18-3(lines 18 22) the Hoare annotation is: (or (not (<= |glob2_#in~pathlim.offset| ~tmp~0.offset)) (not (= ~tmp~0.base |glob2_#in~pathbuf.base|)) (not (<= (+ |glob2_#in~pathbuf.offset| 4) ~tmp~0.offset)) (and (<= glob2_~pathlim.offset ~tmp~0.offset) (= ~tmp~0.base glob2_~p~0.base))) [2020-08-18 15:35:58,710 INFO L268 CegarLoopResult]: For program point L18-4(lines 18 22) no Hoare annotation was computed. [2020-08-18 15:35:58,711 INFO L268 CegarLoopResult]: For program point glob2FINAL(lines 14 25) no Hoare annotation was computed. [2020-08-18 15:35:58,711 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 15:35:58,711 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 15:35:58,711 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 15:35:58,711 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 15:35:58,712 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 27 38) the Hoare annotation is: (and (= |old(~tmp~0.base)| ~tmp~0.base) (= ~tmp~0.offset |old(~tmp~0.offset)|) (= |old(#valid)| |#valid|)) [2020-08-18 15:35:58,712 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 27 38) no Hoare annotation was computed. [2020-08-18 15:35:58,712 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 27 38) no Hoare annotation was computed. [2020-08-18 15:35:58,712 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (<= (+ |main_~#pathbuf~0.offset| 4) ~tmp~0.offset) (<= main_~bound~0.offset ~tmp~0.offset) (= ~tmp~0.base |main_~#pathbuf~0.base|)) [2020-08-18 15:35:58,713 INFO L268 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed. [2020-08-18 15:35:58,713 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-08-18 15:35:58,713 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-08-18 15:35:58,713 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-18 15:35:58,713 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-08-18 15:35:58,714 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-08-18 15:35:58,714 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-08-18 15:35:58,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 03:35:58 BoogieIcfgContainer [2020-08-18 15:35:58,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 15:35:58,738 INFO L168 Benchmark]: Toolchain (without parser) took 2770.20 ms. Allocated memory was 137.9 MB in the beginning and 230.7 MB in the end (delta: 92.8 MB). Free memory was 100.3 MB in the beginning and 95.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 97.4 MB. Max. memory is 7.1 GB. [2020-08-18 15:35:58,739 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 15:35:58,740 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.78 ms. Allocated memory is still 137.9 MB. Free memory was 100.1 MB in the beginning and 90.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-18 15:35:58,741 INFO L168 Benchmark]: Boogie Preprocessor took 151.31 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 90.2 MB in the beginning and 178.0 MB in the end (delta: -87.8 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-18 15:35:58,742 INFO L168 Benchmark]: RCFGBuilder took 311.37 ms. Allocated memory is still 200.8 MB. Free memory was 178.0 MB in the beginning and 162.7 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-08-18 15:35:58,743 INFO L168 Benchmark]: TraceAbstraction took 2065.05 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 162.7 MB in the beginning and 95.7 MB in the end (delta: 67.0 MB). Peak memory consumption was 96.9 MB. Max. memory is 7.1 GB. [2020-08-18 15:35:58,748 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 235.78 ms. Allocated memory is still 137.9 MB. Free memory was 100.1 MB in the beginning and 90.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.31 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 90.2 MB in the beginning and 178.0 MB in the end (delta: -87.8 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 311.37 ms. Allocated memory is still 200.8 MB. Free memory was 178.0 MB in the beginning and 162.7 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2065.05 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 162.7 MB in the beginning and 95.7 MB in the end (delta: 67.0 MB). Peak memory consumption was 96.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((!(pathlim <= tmp) || !(tmp == pathbuf)) || !(pathbuf + 4 <= tmp)) || (pathlim <= tmp && tmp == p) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 89 SDslu, 100 SDs, 0 SdLazy, 247 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 17 NumberOfFragments, 89 HoareAnnotationTreeSize, 12 FomulaSimplifications, 117 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 122 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 6188 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 16/20 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 correct! Received shutdown request...