java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ.epf -i ../../../trunk/examples/svcomp/memsafety-ext2/length_test03_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-20 23:40:29,101 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-20 23:40:29,103 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-20 23:40:29,117 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-20 23:40:29,118 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-20 23:40:29,119 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-20 23:40:29,120 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-20 23:40:29,121 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-20 23:40:29,123 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-20 23:40:29,123 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-20 23:40:29,124 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-20 23:40:29,124 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-20 23:40:29,125 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-20 23:40:29,126 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-20 23:40:29,127 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-20 23:40:29,129 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-20 23:40:29,132 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-20 23:40:29,133 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-20 23:40:29,135 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-20 23:40:29,136 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-20 23:40:29,138 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-20 23:40:29,143 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-20 23:40:29,144 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-20 23:40:29,144 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ.epf [2018-01-20 23:40:29,154 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-20 23:40:29,154 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-20 23:40:29,155 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-20 23:40:29,155 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-20 23:40:29,155 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-20 23:40:29,155 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-20 23:40:29,156 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-20 23:40:29,156 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-20 23:40:29,156 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-20 23:40:29,157 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-20 23:40:29,157 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-20 23:40:29,157 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-20 23:40:29,157 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-20 23:40:29,157 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-20 23:40:29,158 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-20 23:40:29,158 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-20 23:40:29,158 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-20 23:40:29,158 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-20 23:40:29,158 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-20 23:40:29,159 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-20 23:40:29,159 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-20 23:40:29,159 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-20 23:40:29,159 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-20 23:40:29,159 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-20 23:40:29,160 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-20 23:40:29,160 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 23:40:29,160 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-20 23:40:29,160 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-20 23:40:29,160 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-20 23:40:29,161 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-20 23:40:29,161 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-20 23:40:29,161 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-20 23:40:29,161 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-20 23:40:29,161 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-20 23:40:29,162 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-20 23:40:29,162 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-20 23:40:29,163 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-20 23:40:29,163 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-20 23:40:29,198 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-20 23:40:29,210 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-20 23:40:29,214 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-20 23:40:29,216 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-20 23:40:29,216 INFO L276 PluginConnector]: CDTParser initialized [2018-01-20 23:40:29,217 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext2/length_test03_false-valid-memtrack.i [2018-01-20 23:40:29,394 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-20 23:40:29,397 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-20 23:40:29,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-20 23:40:29,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-20 23:40:29,403 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-20 23:40:29,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 11:40:29" (1/1) ... [2018-01-20 23:40:29,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@585c73c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:40:29, skipping insertion in model container [2018-01-20 23:40:29,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 11:40:29" (1/1) ... [2018-01-20 23:40:29,424 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 23:40:29,465 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 23:40:29,587 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 23:40:29,608 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 23:40:29,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:40:29 WrapperNode [2018-01-20 23:40:29,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-20 23:40:29,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-20 23:40:29,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-20 23:40:29,616 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-20 23:40:29,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:40:29" (1/1) ... [2018-01-20 23:40:29,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:40:29" (1/1) ... [2018-01-20 23:40:29,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:40:29" (1/1) ... [2018-01-20 23:40:29,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:40:29" (1/1) ... [2018-01-20 23:40:29,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:40:29" (1/1) ... [2018-01-20 23:40:29,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:40:29" (1/1) ... [2018-01-20 23:40:29,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:40:29" (1/1) ... [2018-01-20 23:40:29,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-20 23:40:29,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-20 23:40:29,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-20 23:40:29,664 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-20 23:40:29,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:40:29" (1/1) ... No working directory specified, using /storage/ultimate/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 [2018-01-20 23:40:29,722 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-20 23:40:29,722 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-20 23:40:29,723 INFO L136 BoogieDeclarations]: Found implementation of procedure append [2018-01-20 23:40:29,723 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-20 23:40:29,723 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-20 23:40:29,723 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-20 23:40:29,723 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-20 23:40:29,723 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-20 23:40:29,723 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-20 23:40:29,723 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-20 23:40:29,723 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-20 23:40:29,724 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-20 23:40:29,724 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2018-01-20 23:40:29,724 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-20 23:40:29,724 INFO L128 BoogieDeclarations]: Found specification of procedure append [2018-01-20 23:40:29,724 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-20 23:40:29,724 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-20 23:40:29,724 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-20 23:40:30,029 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-20 23:40:30,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 11:40:30 BoogieIcfgContainer [2018-01-20 23:40:30,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-20 23:40:30,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-20 23:40:30,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-20 23:40:30,032 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-20 23:40:30,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 11:40:29" (1/3) ... [2018-01-20 23:40:30,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6117d527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 11:40:30, skipping insertion in model container [2018-01-20 23:40:30,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:40:29" (2/3) ... [2018-01-20 23:40:30,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6117d527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 11:40:30, skipping insertion in model container [2018-01-20 23:40:30,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 11:40:30" (3/3) ... [2018-01-20 23:40:30,036 INFO L105 eAbstractionObserver]: Analyzing ICFG length_test03_false-valid-memtrack.i [2018-01-20 23:40:30,042 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-20 23:40:30,051 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-20 23:40:30,090 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:40:30,090 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:40:30,090 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:40:30,090 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:40:30,090 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:40:30,090 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:40:30,091 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:40:30,091 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-20 23:40:30,091 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:40:30,108 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2018-01-20 23:40:30,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-20 23:40:30,113 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:40:30,114 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-20 23:40:30,114 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-20 23:40:30,118 INFO L82 PathProgramCache]: Analyzing trace with hash 159493, now seen corresponding path program 1 times [2018-01-20 23:40:30,120 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:40:30,160 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:40:30,160 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:40:30,160 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:40:30,160 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:40:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:40:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:40:30,217 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 23:40:30,225 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:40:30,231 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:40:30,231 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:40:30,231 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:40:30,231 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:40:30,231 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:40:30,231 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:40:30,231 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:40:30,231 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-20 23:40:30,232 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:40:30,234 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2018-01-20 23:40:30,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-20 23:40:30,238 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:40:30,238 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:40:30,238 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:40:30,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1690254578, now seen corresponding path program 1 times [2018-01-20 23:40:30,239 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:40:30,240 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:40:30,241 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:40:30,241 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:40:30,241 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:40:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:40:30,287 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:40:30,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:40:30,432 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:40:30,432 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 23:40:30,432 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:40:30,435 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 23:40:30,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 23:40:30,446 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 23:40:30,448 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 2 states. [2018-01-20 23:40:30,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:40:30,474 INFO L93 Difference]: Finished difference Result 141 states and 158 transitions. [2018-01-20 23:40:30,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 23:40:30,476 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 34 [2018-01-20 23:40:30,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:40:30,485 INFO L225 Difference]: With dead ends: 141 [2018-01-20 23:40:30,485 INFO L226 Difference]: Without dead ends: 76 [2018-01-20 23:40:30,488 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 23:40:30,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-01-20 23:40:30,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-01-20 23:40:30,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-01-20 23:40:30,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2018-01-20 23:40:30,527 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 34 [2018-01-20 23:40:30,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:40:30,527 INFO L432 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2018-01-20 23:40:30,527 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 23:40:30,528 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2018-01-20 23:40:30,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-01-20 23:40:30,531 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:40:30,531 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:40:30,531 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:40:30,531 INFO L82 PathProgramCache]: Analyzing trace with hash -767510167, now seen corresponding path program 1 times [2018-01-20 23:40:30,531 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:40:30,532 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:40:30,533 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:40:30,533 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:40:30,533 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:40:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:40:30,568 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:40:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:40:30,635 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:40:30,635 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-20 23:40:30,635 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:40:30,636 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 23:40:30,637 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 23:40:30,637 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 23:40:30,637 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 3 states. [2018-01-20 23:40:30,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:40:30,669 INFO L93 Difference]: Finished difference Result 139 states and 154 transitions. [2018-01-20 23:40:30,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 23:40:30,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2018-01-20 23:40:30,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:40:30,670 INFO L225 Difference]: With dead ends: 139 [2018-01-20 23:40:30,671 INFO L226 Difference]: Without dead ends: 77 [2018-01-20 23:40:30,672 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 23:40:30,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-01-20 23:40:30,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-01-20 23:40:30,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-01-20 23:40:30,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2018-01-20 23:40:30,678 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 54 [2018-01-20 23:40:30,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:40:30,678 INFO L432 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2018-01-20 23:40:30,679 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 23:40:30,679 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2018-01-20 23:40:30,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-01-20 23:40:30,680 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:40:30,681 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:40:30,681 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:40:30,681 INFO L82 PathProgramCache]: Analyzing trace with hash 667417900, now seen corresponding path program 1 times [2018-01-20 23:40:30,681 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:40:30,682 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:40:30,682 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:40:30,682 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:40:30,682 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:40:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:40:30,724 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:40:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:40:30,793 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:40:30,793 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-20 23:40:30,793 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:40:30,794 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 23:40:30,794 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 23:40:30,794 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 23:40:30,795 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 3 states. [2018-01-20 23:40:30,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:40:30,828 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2018-01-20 23:40:30,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 23:40:30,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2018-01-20 23:40:30,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:40:30,831 INFO L225 Difference]: With dead ends: 117 [2018-01-20 23:40:30,831 INFO L226 Difference]: Without dead ends: 88 [2018-01-20 23:40:30,831 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 23:40:30,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-01-20 23:40:30,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 81. [2018-01-20 23:40:30,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-01-20 23:40:30,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2018-01-20 23:40:30,842 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 56 [2018-01-20 23:40:30,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:40:30,842 INFO L432 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2018-01-20 23:40:30,842 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 23:40:30,842 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2018-01-20 23:40:30,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-01-20 23:40:30,845 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:40:30,845 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:40:30,845 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:40:30,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1090926838, now seen corresponding path program 1 times [2018-01-20 23:40:30,846 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:40:30,847 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:40:30,847 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:40:30,847 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:40:30,847 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:40:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:40:30,882 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:40:30,958 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-20 23:40:30,958 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 23:40:30,958 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-20 23:40:30,959 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 84 with the following transitions: [2018-01-20 23:40:30,962 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [4], [5], [6], [7], [8], [12], [15], [18], [24], [28], [31], [33], [36], [40], [41], [42], [43], [47], [51], [61], [62], [63], [64], [68], [71], [73], [74], [75], [76], [77], [79], [83], [84], [85], [86], [87], [89], [90], [95], [96], [97], [98], [99], [100], [101], [104], [105], [106], [112], [113], [114], [115], [116], [126], [128], [129], [130], [131], [132], [133], [134], [135] [2018-01-20 23:40:31,027 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-20 23:40:31,027 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-20 23:41:35,294 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-20 23:41:35,295 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-20 23:41:35,295 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-20 23:41:35,295 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 23:41:35,296 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-20 23:41:35,302 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:41:35,302 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-20 23:41:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:41:35,392 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 23:41:35,399 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-20 23:41:35,400 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-20 23:41:35,403 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:41:35,403 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:41:35,403 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:41:35,404 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:41:35,404 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:41:35,404 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:41:35,404 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:41:35,404 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-20 23:41:35,404 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:41:35,406 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2018-01-20 23:41:35,407 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-20 23:41:35,408 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:41:35,408 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:41:35,408 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:41:35,409 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:41:35,409 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:41:35,409 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:41:35,409 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:41:35,409 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == appendErr0EnsuresViolation======== [2018-01-20 23:41:35,409 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:41:35,410 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2018-01-20 23:41:35,411 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-20 23:41:35,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 11:41:35 BoogieIcfgContainer [2018-01-20 23:41:35,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-20 23:41:35,413 INFO L168 Benchmark]: Toolchain (without parser) took 66018.24 ms. Allocated memory was 303.6 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 261.9 MB in the beginning and 591.2 MB in the end (delta: -329.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 5.3 GB. [2018-01-20 23:41:35,414 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 303.6 MB. Free memory is still 267.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 23:41:35,414 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.82 ms. Allocated memory is still 303.6 MB. Free memory was 260.9 MB in the beginning and 249.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 5.3 GB. [2018-01-20 23:41:35,415 INFO L168 Benchmark]: Boogie Preprocessor took 48.43 ms. Allocated memory is still 303.6 MB. Free memory was 249.9 MB in the beginning and 247.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-20 23:41:35,415 INFO L168 Benchmark]: RCFGBuilder took 365.72 ms. Allocated memory is still 303.6 MB. Free memory was 247.9 MB in the beginning and 222.2 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 5.3 GB. [2018-01-20 23:41:35,416 INFO L168 Benchmark]: TraceAbstraction took 65381.41 ms. Allocated memory was 303.6 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 222.2 MB in the beginning and 591.2 MB in the end (delta: -369.0 MB). Peak memory consumption was 1.6 GB. Max. memory is 5.3 GB. [2018-01-20 23:41:35,417 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 303.6 MB. Free memory is still 267.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 216.82 ms. Allocated memory is still 303.6 MB. Free memory was 260.9 MB in the beginning and 249.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 48.43 ms. Allocated memory is still 303.6 MB. Free memory was 249.9 MB in the beginning and 247.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 365.72 ms. Allocated memory is still 303.6 MB. Free memory was 247.9 MB in the beginning and 222.2 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 65381.41 ms. Allocated memory was 303.6 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 222.2 MB in the beginning and 591.2 MB in the end (delta: -369.0 MB). Peak memory consumption was 1.6 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 4 procedures, 80 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 1). Cancelled while BasicCegarLoop was analyzing trace of length 84 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 3 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 80 locations, 4 error locations. TIMEOUT Result, 65.1s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 246 SDtfs, 7 SDslu, 150 SDs, 0 SdLazy, 16 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 64.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 141 ConstructedInterpolants, 0 QuantifiedInterpolants, 7196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 554]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 554). Cancelled while IsEmpty was searching accepting run (input had 80 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 80 locations, 4 error locations. TIMEOUT Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 539]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 539). Cancelled while IsEmpty was searching accepting run (input had 80 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: appendErr0EnsuresViolation CFG has 4 procedures, 80 locations, 4 error locations. TIMEOUT Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/length_test03_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-20_23-41-35-426.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/length_test03_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-20_23-41-35-426.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/length_test03_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-20_23-41-35-426.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/length_test03_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-20_23-41-35-426.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/length_test03_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-20_23-41-35-426.csv Completed graceful shutdown