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_mostprecise.epf -i ../../../trunk/examples/svcomp/list-ext-properties/test-0504_1_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 03:13:28,017 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 03:13:28,019 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 03:13:28,034 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 03:13:28,034 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 03:13:28,035 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 03:13:28,036 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 03:13:28,037 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 03:13:28,039 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 03:13:28,040 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 03:13:28,041 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 03:13:28,041 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 03:13:28,042 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 03:13:28,043 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 03:13:28,043 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 03:13:28,046 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 03:13:28,048 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 03:13:28,050 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 03:13:28,051 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 03:13:28,052 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 03:13:28,055 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 03:13:28,060 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 03:13:28,060 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 03:13:28,061 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_mostprecise.epf [2018-01-21 03:13:28,071 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 03:13:28,071 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 03:13:28,072 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 03:13:28,072 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 03:13:28,072 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 03:13:28,073 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 03:13:28,073 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 03:13:28,073 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 03:13:28,073 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 03:13:28,074 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 03:13:28,074 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 03:13:28,074 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 03:13:28,074 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 03:13:28,075 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 03:13:28,075 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 03:13:28,075 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 03:13:28,075 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 03:13:28,075 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 03:13:28,076 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 03:13:28,076 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 03:13:28,076 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 03:13:28,076 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 03:13:28,076 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 03:13:28,077 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 03:13:28,077 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 03:13:28,077 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 03:13:28,077 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 03:13:28,077 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 03:13:28,078 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 03:13:28,078 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 03:13:28,078 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 03:13:28,078 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 03:13:28,078 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 03:13:28,079 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 03:13:28,079 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 03:13:28,079 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 03:13:28,079 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 03:13:28,079 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 03:13:28,080 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 03:13:28,080 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 03:13:28,115 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 03:13:28,128 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 03:13:28,132 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 03:13:28,134 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 03:13:28,134 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 03:13:28,135 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/test-0504_1_true-valid-memsafety.i [2018-01-21 03:13:28,322 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 03:13:28,327 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 03:13:28,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 03:13:28,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 03:13:28,333 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 03:13:28,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 03:13:28" (1/1) ... [2018-01-21 03:13:28,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25e082f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:13:28, skipping insertion in model container [2018-01-21 03:13:28,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 03:13:28" (1/1) ... [2018-01-21 03:13:28,356 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 03:13:28,396 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 03:13:28,520 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 03:13:28,542 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 03:13:28,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:13:28 WrapperNode [2018-01-21 03:13:28,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 03:13:28,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 03:13:28,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 03:13:28,553 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 03:13:28,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:13:28" (1/1) ... [2018-01-21 03:13:28,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:13:28" (1/1) ... [2018-01-21 03:13:28,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:13:28" (1/1) ... [2018-01-21 03:13:28,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:13:28" (1/1) ... [2018-01-21 03:13:28,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:13:28" (1/1) ... [2018-01-21 03:13:28,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:13:28" (1/1) ... [2018-01-21 03:13:28,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:13:28" (1/1) ... [2018-01-21 03:13:28,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 03:13:28,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 03:13:28,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 03:13:28,591 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 03:13:28,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:13:28" (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 03:13:28,639 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 03:13:28,640 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 03:13:28,640 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 03:13:28,640 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 03:13:28,640 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 03:13:28,640 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 03:13:28,640 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 03:13:28,641 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 03:13:28,641 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 03:13:28,641 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 03:13:28,641 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 03:13:28,641 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 03:13:28,641 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-01-21 03:13:28,641 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 03:13:28,642 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 03:13:28,642 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 03:13:28,642 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 03:13:28,938 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 03:13:28,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 03:13:28 BoogieIcfgContainer [2018-01-21 03:13:28,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 03:13:28,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 03:13:28,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 03:13:28,943 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 03:13:28,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 03:13:28" (1/3) ... [2018-01-21 03:13:28,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edb418f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 03:13:28, skipping insertion in model container [2018-01-21 03:13:28,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:13:28" (2/3) ... [2018-01-21 03:13:28,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edb418f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 03:13:28, skipping insertion in model container [2018-01-21 03:13:28,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 03:13:28" (3/3) ... [2018-01-21 03:13:28,947 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0504_1_true-valid-memsafety.i [2018-01-21 03:13:28,956 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 03:13:28,965 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 03:13:29,013 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:13:29,014 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:13:29,014 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:13:29,014 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:13:29,014 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:13:29,014 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:13:29,014 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:13:29,015 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 03:13:29,016 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:13:29,037 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2018-01-21 03:13:29,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 03:13:29,043 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:13:29,044 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 03:13:29,044 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 03:13:29,048 INFO L82 PathProgramCache]: Analyzing trace with hash 161638, now seen corresponding path program 1 times [2018-01-21 03:13:29,050 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:13:29,091 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:13:29,092 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:13:29,092 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:13:29,092 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:13:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:13:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:13:29,148 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 03:13:29,154 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:13:29,160 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:13:29,160 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:13:29,160 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:13:29,160 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:13:29,160 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:13:29,160 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:13:29,161 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:13:29,161 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 03:13:29,161 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:13:29,163 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2018-01-21 03:13:29,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-21 03:13:29,164 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:13:29,165 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 03:13:29,165 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 03:13:29,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1534673087, now seen corresponding path program 1 times [2018-01-21 03:13:29,165 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:13:29,166 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:13:29,166 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:13:29,166 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:13:29,167 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:13:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:13:29,184 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:13:29,213 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 03:13:29,215 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 03:13:29,215 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 03:13:29,215 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:13:29,218 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 03:13:29,234 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 03:13:29,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 03:13:29,238 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2018-01-21 03:13:29,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 03:13:29,343 INFO L93 Difference]: Finished difference Result 119 states and 145 transitions. [2018-01-21 03:13:29,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 03:13:29,345 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-01-21 03:13:29,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 03:13:29,355 INFO L225 Difference]: With dead ends: 119 [2018-01-21 03:13:29,356 INFO L226 Difference]: Without dead ends: 60 [2018-01-21 03:13:29,358 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 03:13:29,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-21 03:13:29,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-01-21 03:13:29,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-01-21 03:13:29,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2018-01-21 03:13:29,393 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 12 [2018-01-21 03:13:29,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 03:13:29,394 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2018-01-21 03:13:29,394 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 03:13:29,394 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2018-01-21 03:13:29,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-21 03:13:29,395 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:13:29,395 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 03:13:29,395 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 03:13:29,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1359962435, now seen corresponding path program 1 times [2018-01-21 03:13:29,396 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:13:29,397 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:13:29,397 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:13:29,397 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:13:29,397 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:13:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:13:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:13:29,434 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 03:13:29,438 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:13:29,440 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:13:29,441 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:13:29,447 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:13:29,448 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:13:29,448 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:13:29,448 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:13:29,448 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:13:29,448 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:13:29,448 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:13:29,448 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 03:13:29,448 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:13:29,449 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2018-01-21 03:13:29,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-01-21 03:13:29,450 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:13:29,450 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 03:13:29,450 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 03:13:29,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1736948604, now seen corresponding path program 1 times [2018-01-21 03:13:29,451 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:13:29,451 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:13:29,452 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:13:29,452 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:13:29,452 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:13:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:13:29,458 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:13:29,468 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 03:13:29,468 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 03:13:29,468 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 03:13:29,468 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:13:29,469 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 03:13:29,469 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 03:13:29,469 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 03:13:29,469 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2018-01-21 03:13:29,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 03:13:29,476 INFO L93 Difference]: Finished difference Result 119 states and 145 transitions. [2018-01-21 03:13:29,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 03:13:29,476 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-01-21 03:13:29,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 03:13:29,477 INFO L225 Difference]: With dead ends: 119 [2018-01-21 03:13:29,477 INFO L226 Difference]: Without dead ends: 58 [2018-01-21 03:13:29,478 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 03:13:29,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-01-21 03:13:29,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-01-21 03:13:29,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-01-21 03:13:29,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2018-01-21 03:13:29,485 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 10 [2018-01-21 03:13:29,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 03:13:29,486 INFO L432 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2018-01-21 03:13:29,486 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 03:13:29,486 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2018-01-21 03:13:29,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-21 03:13:29,487 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:13:29,487 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 03:13:29,487 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-21 03:13:29,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1755007480, now seen corresponding path program 1 times [2018-01-21 03:13:29,487 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:13:29,489 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:13:29,489 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:13:29,489 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:13:29,489 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:13:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:13:29,501 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:13:29,541 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 03:13:29,541 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 03:13:29,541 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 03:13:29,541 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:13:29,542 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 03:13:29,542 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 03:13:29,542 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 03:13:29,542 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 3 states. [2018-01-21 03:13:29,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 03:13:29,591 INFO L93 Difference]: Finished difference Result 80 states and 91 transitions. [2018-01-21 03:13:29,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 03:13:29,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-01-21 03:13:29,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 03:13:29,595 INFO L225 Difference]: With dead ends: 80 [2018-01-21 03:13:29,595 INFO L226 Difference]: Without dead ends: 77 [2018-01-21 03:13:29,596 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 03:13:29,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-01-21 03:13:29,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64. [2018-01-21 03:13:29,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-01-21 03:13:29,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2018-01-21 03:13:29,606 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 14 [2018-01-21 03:13:29,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 03:13:29,607 INFO L432 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2018-01-21 03:13:29,607 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 03:13:29,607 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2018-01-21 03:13:29,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-21 03:13:29,608 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:13:29,608 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 03:13:29,608 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-21 03:13:29,609 INFO L82 PathProgramCache]: Analyzing trace with hash -108495441, now seen corresponding path program 1 times [2018-01-21 03:13:29,609 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:13:29,610 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:13:29,610 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:13:29,610 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:13:29,610 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:13:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:13:29,629 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:13:29,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 03:13:29,661 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 03:13:29,661 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 03:13:29,662 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:13:29,662 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 03:13:29,662 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 03:13:29,662 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 03:13:29,663 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand 3 states. [2018-01-21 03:13:29,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 03:13:29,679 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2018-01-21 03:13:29,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 03:13:29,680 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-01-21 03:13:29,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 03:13:29,680 INFO L225 Difference]: With dead ends: 81 [2018-01-21 03:13:29,681 INFO L226 Difference]: Without dead ends: 62 [2018-01-21 03:13:29,681 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 [2018-01-21 03:13:29,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-01-21 03:13:29,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-01-21 03:13:29,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-01-21 03:13:29,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2018-01-21 03:13:29,686 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 23 [2018-01-21 03:13:29,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 03:13:29,686 INFO L432 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2018-01-21 03:13:29,686 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 03:13:29,686 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2018-01-21 03:13:29,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-21 03:13:29,687 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:13:29,687 INFO L322 BasicCegarLoop]: trace histogram [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] [2018-01-21 03:13:29,687 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation]=== [2018-01-21 03:13:29,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1477939535, now seen corresponding path program 1 times [2018-01-21 03:13:29,687 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:13:29,688 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:13:29,688 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:13:29,688 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:13:29,688 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:13:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:13:29,716 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:13:29,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 03:13:29,780 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 03:13:29,780 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 03:13:29,781 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 34 with the following transitions: [2018-01-21 03:13:29,782 INFO L201 CegarAbsIntRunner]: [0], [4], [6], [9], [15], [17], [18], [19], [24], [26], [27], [28], [29], [30], [31], [35], [37], [40], [46], [70], [73], [85], [89], [123], [125], [126], [127], [133], [134], [135] [2018-01-21 03:13:29,835 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 03:13:29,835 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-21 03:14:39,767 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-21 03:14:39,767 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-21 03:14:39,768 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 03:14:39,768 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 03:14:39,768 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 [2018-01-21 03:14:39,776 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:14:39,776 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 03:14:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:14:39,820 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 03:14:39,830 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-21 03:14:39,830 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 03:14:39,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 03:14:39 BoogieIcfgContainer [2018-01-21 03:14:39,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 03:14:39,834 INFO L168 Benchmark]: Toolchain (without parser) took 71511.76 ms. Allocated memory was 304.6 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 262.9 MB in the beginning and 1.3 GB in the end (delta: -998.2 MB). Peak memory consumption was 995.1 MB. Max. memory is 5.3 GB. [2018-01-21 03:14:39,836 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 304.6 MB. Free memory is still 268.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 03:14:39,836 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.45 ms. Allocated memory is still 304.6 MB. Free memory was 261.9 MB in the beginning and 251.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 5.3 GB. [2018-01-21 03:14:39,836 INFO L168 Benchmark]: Boogie Preprocessor took 37.66 ms. Allocated memory is still 304.6 MB. Free memory was 251.0 MB in the beginning and 249.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 03:14:39,837 INFO L168 Benchmark]: RCFGBuilder took 348.48 ms. Allocated memory is still 304.6 MB. Free memory was 249.0 MB in the beginning and 225.4 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 5.3 GB. [2018-01-21 03:14:39,837 INFO L168 Benchmark]: TraceAbstraction took 70893.03 ms. Allocated memory was 304.6 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 225.4 MB in the beginning and 1.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 957.6 MB. Max. memory is 5.3 GB. [2018-01-21 03:14:39,839 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 304.6 MB. Free memory is still 268.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 224.45 ms. Allocated memory is still 304.6 MB. Free memory was 261.9 MB in the beginning and 251.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 37.66 ms. Allocated memory is still 304.6 MB. Free memory was 251.0 MB in the beginning and 249.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 348.48 ms. Allocated memory is still 304.6 MB. Free memory was 249.0 MB in the beginning and 225.4 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 70893.03 ms. Allocated memory was 304.6 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 225.4 MB in the beginning and 1.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 957.6 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) - 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 3 procedures, 63 locations, 3 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=63occurred 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 - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L631] struct T2* first = ((void *)0); [L632] struct T2* last = ((void *)0); [L633] int c1 = 0; [L634] int c2 = 0; VAL [c1=0, c2=0, first={0:0}, last={0:0}] [L635] c1 < 5 && __VERIFIER_nondet_int() [L635] c1 < 5 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, c1=0, c1 < 5 && __VERIFIER_nondet_int()=0, c2=0, first={0:0}, last={0:0}] [L635] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L668] COND FALSE !(c1 > 0) VAL [c1=0, c2=0, first={0:0}, last={0:0}] [L682] return 0; - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 3 procedures, 63 locations, 3 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 70 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 630]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 630). Cancelled while BasicCegarLoop was analyzing trace of length 34 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 4 known predicates. - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 3 procedures, 63 locations, 3 error locations. TIMEOUT Result, 70.3s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 194 SDtfs, 16 SDslu, 112 SDs, 0 SdLazy, 19 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 69.9s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 13 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1232 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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-0504_1_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_03-14-39-850.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0504_1_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_03-14-39-850.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0504_1_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_03-14-39-850.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0504_1_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_03-14-39-850.csv Completed graceful shutdown