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_preciseopt.epf -i ../../../trunk/examples/svcomp/list-ext-properties/test-0232_1_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 08:37:43,101 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 08:37:43,102 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 08:37:43,117 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 08:37:43,117 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 08:37:43,118 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 08:37:43,119 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 08:37:43,121 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 08:37:43,123 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 08:37:43,123 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 08:37:43,124 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-01-21 08:37:43,145 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_preciseopt.epf [2018-01-21 08:37:43,153 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 08:37:43,154 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 08:37:43,154 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 08:37:43,154 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 08:37:43,154 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 08:37:43,155 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 08:37:43,155 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-21 08:37:43,155 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 08:37:43,155 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 08:37:43,155 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 08:37:43,155 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 08:37:43,155 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 08:37:43,156 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 08:37:43,156 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 08:37:43,156 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 08:37:43,156 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 08:37:43,156 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 08:37:43,156 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 08:37:43,156 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 08:37:43,156 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 08:37:43,157 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 08:37:43,157 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 08:37:43,157 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 08:37:43,157 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 08:37:43,157 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 08:37:43,158 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 08:37:43,158 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 08:37:43,158 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 08:37:43,158 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 08:37:43,158 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 08:37:43,158 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 08:37:43,158 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 08:37:43,158 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 08:37:43,159 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 08:37:43,159 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 08:37:43,159 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 08:37:43,159 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 08:37:43,159 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 08:37:43,160 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 08:37:43,160 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 08:37:43,191 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 08:37:43,201 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 08:37:43,204 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 08:37:43,205 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 08:37:43,205 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 08:37:43,206 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/test-0232_1_false-valid-memtrack_true-termination.i [2018-01-21 08:37:43,377 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 08:37:43,382 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 08:37:43,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 08:37:43,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 08:37:43,390 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 08:37:43,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:37:43" (1/1) ... [2018-01-21 08:37:43,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eceb9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:37:43, skipping insertion in model container [2018-01-21 08:37:43,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:37:43" (1/1) ... [2018-01-21 08:37:43,413 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:37:43,452 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:37:43,572 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:37:43,588 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:37:43,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:37:43 WrapperNode [2018-01-21 08:37:43,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 08:37:43,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 08:37:43,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 08:37:43,595 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 08:37:43,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:37:43" (1/1) ... [2018-01-21 08:37:43,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:37:43" (1/1) ... [2018-01-21 08:37:43,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:37:43" (1/1) ... [2018-01-21 08:37:43,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:37:43" (1/1) ... [2018-01-21 08:37:43,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:37:43" (1/1) ... [2018-01-21 08:37:43,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:37:43" (1/1) ... [2018-01-21 08:37:43,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:37:43" (1/1) ... [2018-01-21 08:37:43,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 08:37:43,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 08:37:43,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 08:37:43,628 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 08:37:43,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:37:43" (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 [2018-01-21 08:37:43,678 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 08:37:43,678 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 08:37:43,678 INFO L136 BoogieDeclarations]: Found implementation of procedure append [2018-01-21 08:37:43,679 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 08:37:43,679 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 08:37:43,679 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 08:37:43,679 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 08:37:43,679 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 08:37:43,679 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 08:37:43,679 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 08:37:43,679 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 08:37:43,679 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 08:37:43,680 INFO L128 BoogieDeclarations]: Found specification of procedure append [2018-01-21 08:37:43,680 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 08:37:43,680 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 08:37:43,680 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 08:37:43,929 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 08:37:43,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:37:43 BoogieIcfgContainer [2018-01-21 08:37:43,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 08:37:43,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 08:37:43,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 08:37:43,932 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 08:37:43,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 08:37:43" (1/3) ... [2018-01-21 08:37:43,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc14247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:37:43, skipping insertion in model container [2018-01-21 08:37:43,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:37:43" (2/3) ... [2018-01-21 08:37:43,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc14247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:37:43, skipping insertion in model container [2018-01-21 08:37:43,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:37:43" (3/3) ... [2018-01-21 08:37:43,936 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0232_1_false-valid-memtrack_true-termination.i [2018-01-21 08:37:43,942 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 08:37:43,950 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 08:37:43,994 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:37:43,995 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:37:43,995 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:37:43,995 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:37:43,995 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:37:43,995 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:37:43,995 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:37:43,996 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 08:37:43,997 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:37:44,019 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2018-01-21 08:37:44,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 08:37:44,025 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:37:44,027 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 08:37:44,027 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 08:37:44,031 INFO L82 PathProgramCache]: Analyzing trace with hash 123971, now seen corresponding path program 1 times [2018-01-21 08:37:44,033 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:37:44,074 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:37:44,074 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:37:44,074 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:37:44,074 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:37:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:37:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:37:44,123 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 08:37:44,130 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:37:44,139 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:37:44,139 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:37:44,139 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:37:44,140 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:37:44,140 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:37:44,140 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:37:44,140 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:37:44,140 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 08:37:44,140 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:37:44,142 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2018-01-21 08:37:44,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-21 08:37:44,143 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:37:44,143 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:37:44,143 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:37:44,144 INFO L82 PathProgramCache]: Analyzing trace with hash -532280886, now seen corresponding path program 1 times [2018-01-21 08:37:44,144 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:37:44,145 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:37:44,145 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:37:44,145 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:37:44,145 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:37:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:37:44,169 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:37:44,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:37:44,207 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:37:44,207 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:37:44,208 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:37:44,209 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 08:37:44,226 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 08:37:44,227 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:37:44,229 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 2 states. [2018-01-21 08:37:44,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:37:44,331 INFO L93 Difference]: Finished difference Result 99 states and 108 transitions. [2018-01-21 08:37:44,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 08:37:44,332 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-01-21 08:37:44,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:37:44,344 INFO L225 Difference]: With dead ends: 99 [2018-01-21 08:37:44,344 INFO L226 Difference]: Without dead ends: 62 [2018-01-21 08:37:44,346 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 [2018-01-21 08:37:44,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-01-21 08:37:44,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-01-21 08:37:44,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-01-21 08:37:44,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2018-01-21 08:37:44,380 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 17 [2018-01-21 08:37:44,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:37:44,381 INFO L432 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2018-01-21 08:37:44,381 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 08:37:44,381 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2018-01-21 08:37:44,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-21 08:37:44,383 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:37:44,383 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] [2018-01-21 08:37:44,383 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:37:44,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1810255776, now seen corresponding path program 1 times [2018-01-21 08:37:44,383 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:37:44,385 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:37:44,385 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:37:44,385 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:37:44,385 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:37:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:37:44,431 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:37:44,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:37:44,514 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:37:44,515 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 08:37:44,515 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:37:44,516 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 08:37:44,517 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 08:37:44,517 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 08:37:44,517 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 4 states. [2018-01-21 08:37:44,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:37:44,594 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2018-01-21 08:37:44,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 08:37:44,594 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-01-21 08:37:44,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:37:44,597 INFO L225 Difference]: With dead ends: 90 [2018-01-21 08:37:44,597 INFO L226 Difference]: Without dead ends: 61 [2018-01-21 08:37:44,598 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 08:37:44,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-01-21 08:37:44,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2018-01-21 08:37:44,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-01-21 08:37:44,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2018-01-21 08:37:44,611 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 37 [2018-01-21 08:37:44,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:37:44,611 INFO L432 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2018-01-21 08:37:44,611 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 08:37:44,611 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2018-01-21 08:37:44,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-01-21 08:37:44,612 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:37:44,612 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] [2018-01-21 08:37:44,612 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:37:44,613 INFO L82 PathProgramCache]: Analyzing trace with hash 60106891, now seen corresponding path program 1 times [2018-01-21 08:37:44,613 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:37:44,614 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:37:44,614 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:37:44,614 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:37:44,614 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:37:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:37:44,640 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:37:44,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:37:44,913 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:37:44,913 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-21 08:37:44,913 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:37:44,914 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-21 08:37:44,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-21 08:37:44,915 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-21 08:37:44,915 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 10 states. [2018-01-21 08:37:45,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:37:45,338 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2018-01-21 08:37:45,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-21 08:37:45,339 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2018-01-21 08:37:45,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:37:45,340 INFO L225 Difference]: With dead ends: 65 [2018-01-21 08:37:45,340 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:37:45,341 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2018-01-21 08:37:45,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:37:45,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:37:45,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:37:45,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:37:45,342 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2018-01-21 08:37:45,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:37:45,342 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:37:45,342 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-21 08:37:45,343 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:37:45,343 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:37:45,346 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:37:45,346 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:37:45,346 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:37:45,346 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:37:45,346 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:37:45,346 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:37:45,347 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:37:45,347 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 08:37:45,347 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:37:45,349 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2018-01-21 08:37:45,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-21 08:37:45,350 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:37:45,350 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:37:45,350 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 08:37:45,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1685468214, now seen corresponding path program 1 times [2018-01-21 08:37:45,350 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:37:45,352 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:37:45,352 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:37:45,352 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:37:45,352 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:37:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:37:45,360 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:37:45,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:37:45,369 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:37:45,369 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:37:45,369 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:37:45,370 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 08:37:45,370 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 08:37:45,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:37:45,370 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 2 states. [2018-01-21 08:37:45,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:37:45,375 INFO L93 Difference]: Finished difference Result 99 states and 108 transitions. [2018-01-21 08:37:45,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 08:37:45,375 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-01-21 08:37:45,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:37:45,376 INFO L225 Difference]: With dead ends: 99 [2018-01-21 08:37:45,376 INFO L226 Difference]: Without dead ends: 60 [2018-01-21 08:37:45,377 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 [2018-01-21 08:37:45,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-21 08:37:45,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-01-21 08:37:45,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-01-21 08:37:45,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2018-01-21 08:37:45,383 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 15 [2018-01-21 08:37:45,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:37:45,383 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2018-01-21 08:37:45,383 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 08:37:45,384 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2018-01-21 08:37:45,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-21 08:37:45,385 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:37:45,385 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] [2018-01-21 08:37:45,385 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-21 08:37:45,385 INFO L82 PathProgramCache]: Analyzing trace with hash 337780704, now seen corresponding path program 1 times [2018-01-21 08:37:45,385 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:37:45,386 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:37:45,386 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:37:45,387 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:37:45,387 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:37:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:37:45,403 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:37:45,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:37:45,446 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:37:45,446 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 08:37:45,446 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:37:45,447 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 08:37:45,447 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 08:37:45,447 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 08:37:45,448 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 4 states. [2018-01-21 08:37:45,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:37:45,476 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2018-01-21 08:37:45,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 08:37:45,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-01-21 08:37:45,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:37:45,477 INFO L225 Difference]: With dead ends: 86 [2018-01-21 08:37:45,477 INFO L226 Difference]: Without dead ends: 59 [2018-01-21 08:37:45,478 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 08:37:45,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-01-21 08:37:45,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2018-01-21 08:37:45,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-01-21 08:37:45,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-01-21 08:37:45,482 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 35 [2018-01-21 08:37:45,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:37:45,482 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-01-21 08:37:45,482 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 08:37:45,482 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-01-21 08:37:45,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-01-21 08:37:45,484 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:37:45,484 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] [2018-01-21 08:37:45,484 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-21 08:37:45,484 INFO L82 PathProgramCache]: Analyzing trace with hash -303847733, now seen corresponding path program 1 times [2018-01-21 08:37:45,484 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:37:45,485 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:37:45,485 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:37:45,486 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:37:45,486 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:37:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:37:45,505 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:37:45,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:37:45,674 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:37:45,674 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-21 08:37:45,674 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:37:45,675 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-21 08:37:45,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-21 08:37:45,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-21 08:37:45,676 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 10 states. [2018-01-21 08:37:45,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:37:45,906 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2018-01-21 08:37:45,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-21 08:37:45,907 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2018-01-21 08:37:45,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:37:45,907 INFO L225 Difference]: With dead ends: 63 [2018-01-21 08:37:45,907 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:37:45,908 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2018-01-21 08:37:45,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:37:45,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:37:45,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:37:45,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:37:45,909 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2018-01-21 08:37:45,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:37:45,909 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:37:45,909 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-21 08:37:45,909 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:37:45,909 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:37:45,910 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:37:45,911 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:37:45,911 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:37:45,911 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:37:45,911 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:37:45,911 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:37:45,911 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:37:45,911 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == appendErr0EnsuresViolation======== [2018-01-21 08:37:45,911 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:37:45,912 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2018-01-21 08:37:45,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-21 08:37:45,913 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:37:45,914 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] [2018-01-21 08:37:45,914 INFO L371 AbstractCegarLoop]: === Iteration 1 === [appendErr0EnsuresViolation]=== [2018-01-21 08:37:45,914 INFO L82 PathProgramCache]: Analyzing trace with hash -70755379, now seen corresponding path program 1 times [2018-01-21 08:37:45,914 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:37:45,915 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:37:45,915 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:37:45,915 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:37:45,915 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:37:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:37:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:37:45,949 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 08:37:45,955 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:37:45,961 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:37:45,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 08:37:45 BoogieIcfgContainer [2018-01-21 08:37:45,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 08:37:45,976 INFO L168 Benchmark]: Toolchain (without parser) took 2598.66 ms. Allocated memory was 303.6 MB in the beginning and 480.2 MB in the end (delta: 176.7 MB). Free memory was 261.7 MB in the beginning and 390.1 MB in the end (delta: -128.4 MB). Peak memory consumption was 48.3 MB. Max. memory is 5.3 GB. [2018-01-21 08:37:45,978 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 303.6 MB. Free memory is still 267.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 08:37:45,978 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.76 ms. Allocated memory is still 303.6 MB. Free memory was 260.7 MB in the beginning and 250.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-21 08:37:45,978 INFO L168 Benchmark]: Boogie Preprocessor took 32.32 ms. Allocated memory is still 303.6 MB. Free memory was 250.7 MB in the beginning and 248.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 08:37:45,979 INFO L168 Benchmark]: RCFGBuilder took 301.86 ms. Allocated memory is still 303.6 MB. Free memory was 248.7 MB in the beginning and 226.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 5.3 GB. [2018-01-21 08:37:45,979 INFO L168 Benchmark]: TraceAbstraction took 2044.68 ms. Allocated memory was 303.6 MB in the beginning and 480.2 MB in the end (delta: 176.7 MB). Free memory was 226.5 MB in the beginning and 390.1 MB in the end (delta: -163.6 MB). Peak memory consumption was 13.1 MB. Max. memory is 5.3 GB. [2018-01-21 08:37:45,981 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 303.6 MB. Free memory is still 267.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 211.76 ms. Allocated memory is still 303.6 MB. Free memory was 260.7 MB in the beginning and 250.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 32.32 ms. Allocated memory is still 303.6 MB. Free memory was 250.7 MB in the beginning and 248.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 301.86 ms. Allocated memory is still 303.6 MB. Free memory was 248.7 MB in the beginning and 226.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2044.68 ms. Allocated memory was 303.6 MB in the beginning and 480.2 MB in the end (delta: 176.7 MB). Free memory was 226.5 MB in the beginning and 390.1 MB in the end (delta: -163.6 MB). Peak memory consumption was 13.1 MB. 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) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - 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: [L620] int c = 0; VAL [\old(c)=2, c=0] - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 4 procedures, 66 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=66occurred 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 - PositiveResult [Line: 1]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 66 locations, 4 error locations. SAFE Result, 1.2s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 154 SDtfs, 49 SDslu, 185 SDs, 0 SdLazy, 171 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 21244 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 - PositiveResult [Line: 635]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 66 locations, 4 error locations. SAFE Result, 0.5s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 152 SDtfs, 49 SDslu, 181 SDs, 0 SdLazy, 171 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 20078 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 - CounterExampleResult [Line: 625]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L620] int c = 0; VAL [\old(c)=0, c=0] [L637] FCALL struct item *list = ((void *)0); VAL [\old(c)=0, c=0, list={9:0}] [L638] int length = 0; VAL [\old(c)=0, c=0, length=0, list={9:0}] [L640] CALL append(&list) VAL [\old(c)=0, c=0, plist={9:0}] [L627] c++ VAL [\old(c)=0, c=1, plist={9:0}, plist={9:0}] [L628] EXPR, FCALL malloc(sizeof *item) VAL [\old(c)=0, c=1, malloc(sizeof *item)={11:0}, plist={9:0}, plist={9:0}] [L628] struct item *item = malloc(sizeof *item); VAL [\old(c)=0, c=1, item={11:0}, malloc(sizeof *item)={11:0}, plist={9:0}, plist={9:0}] [L629] EXPR, FCALL \read(**plist) VAL [\old(c)=0, \read(**plist)={0:0}, c=1, item={11:0}, malloc(sizeof *item)={11:0}, plist={9:0}, plist={9:0}] [L629] FCALL item->next = *plist VAL [\old(c)=0, \read(**plist)={0:0}, c=1, item={11:0}, malloc(sizeof *item)={11:0}, plist={9:0}, plist={9:0}] [L630] EXPR, FCALL item->next VAL [\old(c)=0, c=1, item={11:0}, item->next={0:0}, malloc(sizeof *item)={11:0}, plist={9:0}, plist={9:0}] [L630-L632] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) VAL [\old(c)=0, c=1, item={11:0}, item->next={0:0}, malloc(sizeof *item)={11:0}, plist={9:0}, plist={9:0}] [L632] EXPR, FCALL malloc(sizeof *item) VAL [\old(c)=0, c=1, item={11:0}, item->next={0:0}, malloc(sizeof *item)={12:0}, malloc(sizeof *item)={11:0}, plist={9:0}, plist={9:0}] [L630-L632] EXPR (item->next) ? item->next->data : malloc(sizeof *item) VAL [(item->next) ? item->next->data : malloc(sizeof *item)={12:0}, \old(c)=0, c=1, item={11:0}, item->next={0:0}, malloc(sizeof *item)={12:0}, malloc(sizeof *item)={11:0}, plist={9:0}, plist={9:0}] [L630-L632] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *item) VAL [(item->next) ? item->next->data : malloc(sizeof *item)={12:0}, \old(c)=0, c=1, item={11:0}, item->next={0:0}, malloc(sizeof *item)={12:0}, malloc(sizeof *item)={11:0}, plist={9:0}, plist={9:0}] [L633] FCALL *plist = item VAL [\old(c)=0, c=1, item={11:0}, malloc(sizeof *item)={12:0}, malloc(sizeof *item)={11:0}, plist={9:0}, plist={9:0}] - StatisticsResult: Ultimate Automizer benchmark data for error location: appendErr0EnsuresViolation CFG has 4 procedures, 66 locations, 4 error locations. UNSAFE Result, 0.0s 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=66occurred 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, 24 NumberOfCodeBlocks, 24 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 RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0232_1_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_08-37-45-991.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0232_1_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_08-37-45-991.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0232_1_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_08-37-45-991.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0232_1_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_08-37-45-991.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0232_1_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_08-37-45-991.csv Received shutdown request...