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/forester-heap/dll-circular_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 03:39:00,656 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 03:39:00,657 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 03:39:00,672 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 03:39:00,672 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 03:39:00,674 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 03:39:00,675 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 03:39:00,676 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 03:39:00,678 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 03:39:00,679 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 03:39:00,680 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 03:39:00,681 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 03:39:00,681 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 03:39:00,683 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 03:39:00,684 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 03:39:00,686 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 03:39:00,689 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 03:39:00,691 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 03:39:00,692 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 03:39:00,693 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 03:39:00,696 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 03:39:00,701 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 03:39:00,701 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 03:39:00,702 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 03:39:00,710 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 03:39:00,711 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 03:39:00,711 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 03:39:00,712 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 03:39:00,712 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 03:39:00,712 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 03:39:00,712 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 03:39:00,712 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 03:39:00,712 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 03:39:00,713 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 03:39:00,713 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 03:39:00,713 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 03:39:00,713 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 03:39:00,713 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 03:39:00,713 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 03:39:00,713 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 03:39:00,714 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 03:39:00,714 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 03:39:00,714 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 03:39:00,714 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 03:39:00,714 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 03:39:00,714 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 03:39:00,715 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 03:39:00,715 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 03:39:00,715 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 03:39:00,715 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 03:39:00,715 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 03:39:00,715 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 03:39:00,716 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 03:39:00,716 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 03:39:00,716 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 03:39:00,716 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 03:39:00,716 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 03:39:00,716 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 03:39:00,716 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 03:39:00,716 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 03:39:00,717 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 03:39:00,717 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 03:39:00,717 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 03:39:00,717 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 03:39:00,752 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 03:39:00,764 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 03:39:00,767 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 03:39:00,769 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 03:39:00,769 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 03:39:00,770 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-circular_true-unreach-call_true-valid-memsafety.i [2018-01-21 03:39:00,953 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 03:39:00,957 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 03:39:00,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 03:39:00,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 03:39:00,963 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 03:39:00,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 03:39:00" (1/1) ... [2018-01-21 03:39:00,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eeba7ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:39:00, skipping insertion in model container [2018-01-21 03:39:00,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 03:39:00" (1/1) ... [2018-01-21 03:39:00,980 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 03:39:01,019 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 03:39:01,141 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 03:39:01,162 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 03:39:01,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:39:01 WrapperNode [2018-01-21 03:39:01,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 03:39:01,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 03:39:01,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 03:39:01,173 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 03:39:01,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:39:01" (1/1) ... [2018-01-21 03:39:01,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:39:01" (1/1) ... [2018-01-21 03:39:01,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:39:01" (1/1) ... [2018-01-21 03:39:01,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:39:01" (1/1) ... [2018-01-21 03:39:01,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:39:01" (1/1) ... [2018-01-21 03:39:01,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:39:01" (1/1) ... [2018-01-21 03:39:01,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:39:01" (1/1) ... [2018-01-21 03:39:01,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 03:39:01,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 03:39:01,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 03:39:01,210 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 03:39:01,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:39:01" (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 03:39:01,260 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 03:39:01,260 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 03:39:01,260 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 03:39:01,260 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 03:39:01,260 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 03:39:01,260 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 03:39:01,260 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 03:39:01,260 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 03:39:01,260 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 03:39:01,261 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 03:39:01,261 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 03:39:01,261 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 03:39:01,261 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 03:39:01,261 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 03:39:01,261 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 03:39:01,262 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 03:39:01,262 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 03:39:01,556 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 03:39:01,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 03:39:01 BoogieIcfgContainer [2018-01-21 03:39:01,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 03:39:01,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 03:39:01,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 03:39:01,560 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 03:39:01,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 03:39:00" (1/3) ... [2018-01-21 03:39:01,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307d8325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 03:39:01, skipping insertion in model container [2018-01-21 03:39:01,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:39:01" (2/3) ... [2018-01-21 03:39:01,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307d8325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 03:39:01, skipping insertion in model container [2018-01-21 03:39:01,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 03:39:01" (3/3) ... [2018-01-21 03:39:01,564 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-circular_true-unreach-call_true-valid-memsafety.i [2018-01-21 03:39:01,574 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 03:39:01,583 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 03:39:01,635 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:39:01,635 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:39:01,635 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:39:01,636 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:39:01,636 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:39:01,636 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:39:01,636 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:39:01,636 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 03:39:01,637 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:39:01,655 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2018-01-21 03:39:01,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 03:39:01,661 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:39:01,662 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 03:39:01,663 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 03:39:01,666 INFO L82 PathProgramCache]: Analyzing trace with hash 190435, now seen corresponding path program 1 times [2018-01-21 03:39:01,668 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:39:01,712 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:39:01,713 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:39:01,713 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:39:01,713 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:39:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:39:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:39:01,770 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 03:39:01,777 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:39:01,784 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:39:01,785 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:39:01,785 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:39:01,785 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:39:01,785 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:39:01,785 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:39:01,786 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:39:01,786 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 03:39:01,786 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:39:01,789 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2018-01-21 03:39:01,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 03:39:01,791 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:39:01,791 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] [2018-01-21 03:39:01,792 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 03:39:01,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1526713431, now seen corresponding path program 1 times [2018-01-21 03:39:01,792 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:39:01,793 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:39:01,793 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:39:01,794 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:39:01,794 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:39:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:39:01,838 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:39:01,888 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 03:39:01,890 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 03:39:01,890 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 03:39:01,891 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:39:01,970 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 03:39:01,982 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 03:39:01,983 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 03:39:01,985 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 2 states. [2018-01-21 03:39:02,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 03:39:02,009 INFO L93 Difference]: Finished difference Result 126 states and 162 transitions. [2018-01-21 03:39:02,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 03:39:02,011 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-01-21 03:39:02,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 03:39:02,019 INFO L225 Difference]: With dead ends: 126 [2018-01-21 03:39:02,019 INFO L226 Difference]: Without dead ends: 66 [2018-01-21 03:39:02,023 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 03:39:02,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-01-21 03:39:02,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-01-21 03:39:02,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-01-21 03:39:02,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2018-01-21 03:39:02,055 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 25 [2018-01-21 03:39:02,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 03:39:02,055 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2018-01-21 03:39:02,055 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 03:39:02,056 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2018-01-21 03:39:02,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-21 03:39:02,057 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:39:02,057 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] [2018-01-21 03:39:02,057 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 03:39:02,057 INFO L82 PathProgramCache]: Analyzing trace with hash -97713131, now seen corresponding path program 1 times [2018-01-21 03:39:02,057 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:39:02,058 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:39:02,058 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:39:02,058 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:39:02,058 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:39:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:39:02,102 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:39:02,826 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 03:39:02,827 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 03:39:02,827 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-21 03:39:02,827 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:39:02,829 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-21 03:39:02,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-21 03:39:02,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-01-21 03:39:02,830 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 10 states. [2018-01-21 03:39:03,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 03:39:03,337 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2018-01-21 03:39:03,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-21 03:39:03,338 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2018-01-21 03:39:03,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 03:39:03,342 INFO L225 Difference]: With dead ends: 132 [2018-01-21 03:39:03,342 INFO L226 Difference]: Without dead ends: 118 [2018-01-21 03:39:03,343 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2018-01-21 03:39:03,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-01-21 03:39:03,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 78. [2018-01-21 03:39:03,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-01-21 03:39:03,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2018-01-21 03:39:03,355 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 33 [2018-01-21 03:39:03,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 03:39:03,356 INFO L432 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2018-01-21 03:39:03,356 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-21 03:39:03,356 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2018-01-21 03:39:03,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-01-21 03:39:03,358 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:39:03,358 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] [2018-01-21 03:39:03,358 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 03:39:03,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1309040711, now seen corresponding path program 1 times [2018-01-21 03:39:03,359 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:39:03,360 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:39:03,360 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:39:03,360 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:39:03,360 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:39:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:39:03,378 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:39:03,414 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 03:39:03,415 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 03:39:03,415 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 03:39:03,415 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:39:03,415 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 03:39:03,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 03:39:03,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 03:39:03,416 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 3 states. [2018-01-21 03:39:03,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 03:39:03,439 INFO L93 Difference]: Finished difference Result 185 states and 204 transitions. [2018-01-21 03:39:03,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 03:39:03,442 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-01-21 03:39:03,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 03:39:03,446 INFO L225 Difference]: With dead ends: 185 [2018-01-21 03:39:03,446 INFO L226 Difference]: Without dead ends: 130 [2018-01-21 03:39:03,447 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 03:39:03,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-01-21 03:39:03,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 96. [2018-01-21 03:39:03,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-01-21 03:39:03,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2018-01-21 03:39:03,461 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 45 [2018-01-21 03:39:03,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 03:39:03,461 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2018-01-21 03:39:03,461 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 03:39:03,461 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2018-01-21 03:39:03,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-01-21 03:39:03,463 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:39:03,464 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 03:39:03,464 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 03:39:03,464 INFO L82 PathProgramCache]: Analyzing trace with hash -403724794, now seen corresponding path program 1 times [2018-01-21 03:39:03,464 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:39:03,465 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:39:03,465 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:39:03,465 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:39:03,465 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:39:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:39:03,486 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:39:04,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 03:39:04,091 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 03:39:04,091 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-01-21 03:39:04,091 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:39:04,091 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-21 03:39:04,092 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-21 03:39:04,092 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-01-21 03:39:04,092 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand 13 states. [2018-01-21 03:39:04,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 03:39:04,474 INFO L93 Difference]: Finished difference Result 166 states and 181 transitions. [2018-01-21 03:39:04,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-21 03:39:04,474 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2018-01-21 03:39:04,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 03:39:04,476 INFO L225 Difference]: With dead ends: 166 [2018-01-21 03:39:04,476 INFO L226 Difference]: Without dead ends: 136 [2018-01-21 03:39:04,477 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2018-01-21 03:39:04,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-01-21 03:39:04,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 101. [2018-01-21 03:39:04,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-01-21 03:39:04,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2018-01-21 03:39:04,486 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 45 [2018-01-21 03:39:04,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 03:39:04,486 INFO L432 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2018-01-21 03:39:04,486 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-21 03:39:04,486 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2018-01-21 03:39:04,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-01-21 03:39:04,487 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:39:04,488 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 03:39:04,488 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 03:39:04,488 INFO L82 PathProgramCache]: Analyzing trace with hash 804308226, now seen corresponding path program 1 times [2018-01-21 03:39:04,488 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:39:04,489 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:39:04,489 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:39:04,489 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:39:04,489 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:39:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:39:04,506 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:39:04,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 03:39:04,897 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 03:39:04,897 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 03:39:04,898 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 50 with the following transitions: [2018-01-21 03:39:04,900 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [4], [5], [9], [11], [14], [65], [66], [67], [71], [76], [80], [88], [90], [93], [95], [99], [100], [101], [102], [107], [108], [109], [110], [111], [117], [121], [127], [128], [132], [133], [137], [139], [142], [151], [152], [153], [155], [156], [161], [162], [163], [164], [165] [2018-01-21 03:39:04,950 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 03:39:04,950 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-21 03:40:05,042 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-21 03:40:05,042 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-21 03:40:05,043 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 03:40:05,043 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 03:40:05,043 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 03:40:05,051 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:40:05,051 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 03:40:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:40:05,093 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 03:40:05,101 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-21 03:40:05,101 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 03:40:05,104 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:40:05,104 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:40:05,104 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:40:05,104 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:40:05,105 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:40:05,105 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:40:05,105 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:40:05,105 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 03:40:05,105 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:40:05,107 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2018-01-21 03:40:05,107 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 03:40:05,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 03:40:05 BoogieIcfgContainer [2018-01-21 03:40:05,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 03:40:05,109 INFO L168 Benchmark]: Toolchain (without parser) took 64155.25 ms. Allocated memory was 303.6 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 261.9 MB in the beginning and 1.1 GB in the end (delta: -840.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. [2018-01-21 03:40:05,111 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 303.6 MB. Free memory is still 267.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 03:40:05,111 INFO L168 Benchmark]: CACSL2BoogieTranslator took 215.16 ms. Allocated memory is still 303.6 MB. Free memory was 260.9 MB in the beginning and 248.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-21 03:40:05,111 INFO L168 Benchmark]: Boogie Preprocessor took 36.89 ms. Allocated memory is still 303.6 MB. Free memory was 248.9 MB in the beginning and 246.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 03:40:05,112 INFO L168 Benchmark]: RCFGBuilder took 346.67 ms. Allocated memory is still 303.6 MB. Free memory was 246.9 MB in the beginning and 224.2 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 5.3 GB. [2018-01-21 03:40:05,112 INFO L168 Benchmark]: TraceAbstraction took 63550.53 ms. Allocated memory was 303.6 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 224.2 MB in the beginning and 1.1 GB in the end (delta: -878.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. [2018-01-21 03:40:05,114 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 303.6 MB. Free memory is still 267.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 215.16 ms. Allocated memory is still 303.6 MB. Free memory was 260.9 MB in the beginning and 248.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 36.89 ms. Allocated memory is still 303.6 MB. Free memory was 248.9 MB in the beginning and 246.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 346.67 ms. Allocated memory is still 303.6 MB. Free memory was 246.9 MB in the beginning and 224.2 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 63550.53 ms. Allocated memory was 303.6 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 224.2 MB in the beginning and 1.1 GB in the end (delta: -878.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 3 procedures, 69 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=69occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 1). Cancelled while BasicCegarLoop was analyzing trace of length 50 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 3 procedures, 69 locations, 3 error locations. TIMEOUT Result, 63.3s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 255 SDtfs, 645 SDslu, 553 SDs, 0 SdLazy, 383 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 8 SyntacticMatches, 10 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 60.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 109 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 42388 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 983]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 983). Cancelled while IsEmpty was searching accepting run (input had 69 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 3 procedures, 69 locations, 3 error locations. TIMEOUT Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dll-circular_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_03-40-05-123.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dll-circular_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_03-40-05-123.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dll-circular_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_03-40-05-123.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dll-circular_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_03-40-05-123.csv Completed graceful shutdown