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_precise.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 06:21:47,620 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 06:21:47,622 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 06:21:47,635 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 06:21:47,636 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 06:21:47,636 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 06:21:47,637 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 06:21:47,638 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 06:21:47,640 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 06:21:47,641 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 06:21:47,641 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 06:21:47,641 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 06:21:47,642 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 06:21:47,643 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 06:21:47,643 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 06:21:47,646 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 06:21:47,648 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 06:21:47,650 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 06:21:47,652 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 06:21:47,653 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 06:21:47,656 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 06:21:47,661 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 06:21:47,662 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 06:21:47,662 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_precise.epf [2018-01-21 06:21:47,672 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 06:21:47,672 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 06:21:47,673 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 06:21:47,673 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 06:21:47,674 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 06:21:47,674 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 06:21:47,674 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 06:21:47,674 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 06:21:47,675 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 06:21:47,675 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 06:21:47,675 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 06:21:47,676 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 06:21:47,676 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 06:21:47,676 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 06:21:47,676 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 06:21:47,676 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 06:21:47,676 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 06:21:47,677 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 06:21:47,677 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 06:21:47,677 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 06:21:47,677 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 06:21:47,678 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 06:21:47,678 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 06:21:47,678 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 06:21:47,678 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 06:21:47,678 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 06:21:47,678 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 06:21:47,679 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 06:21:47,679 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 06:21:47,679 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 06:21:47,679 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 06:21:47,679 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 06:21:47,680 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 06:21:47,680 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 06:21:47,680 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 06:21:47,680 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 06:21:47,680 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 06:21:47,681 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 06:21:47,681 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 06:21:47,717 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 06:21:47,730 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 06:21:47,735 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 06:21:47,737 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 06:21:47,737 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 06:21:47,738 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-circular_true-unreach-call_true-valid-memsafety.i [2018-01-21 06:21:47,920 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 06:21:47,926 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 06:21:47,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 06:21:47,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 06:21:47,933 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 06:21:47,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 06:21:47" (1/1) ... [2018-01-21 06:21:47,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42bb0702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:21:47, skipping insertion in model container [2018-01-21 06:21:47,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 06:21:47" (1/1) ... [2018-01-21 06:21:47,950 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 06:21:47,988 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 06:21:48,108 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 06:21:48,132 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 06:21:48,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:21:48 WrapperNode [2018-01-21 06:21:48,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 06:21:48,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 06:21:48,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 06:21:48,140 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 06:21:48,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:21:48" (1/1) ... [2018-01-21 06:21:48,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:21:48" (1/1) ... [2018-01-21 06:21:48,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:21:48" (1/1) ... [2018-01-21 06:21:48,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:21:48" (1/1) ... [2018-01-21 06:21:48,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:21:48" (1/1) ... [2018-01-21 06:21:48,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:21:48" (1/1) ... [2018-01-21 06:21:48,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:21:48" (1/1) ... [2018-01-21 06:21:48,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 06:21:48,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 06:21:48,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 06:21:48,176 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 06:21:48,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:21:48" (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 06:21:48,224 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 06:21:48,224 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 06:21:48,224 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 06:21:48,224 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 06:21:48,224 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 06:21:48,225 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 06:21:48,225 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 06:21:48,225 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 06:21:48,225 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 06:21:48,225 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 06:21:48,225 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 06:21:48,226 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 06:21:48,226 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 06:21:48,226 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 06:21:48,226 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 06:21:48,226 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 06:21:48,226 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 06:21:48,512 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 06:21:48,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 06:21:48 BoogieIcfgContainer [2018-01-21 06:21:48,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 06:21:48,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 06:21:48,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 06:21:48,517 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 06:21:48,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 06:21:47" (1/3) ... [2018-01-21 06:21:48,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7180ea6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 06:21:48, skipping insertion in model container [2018-01-21 06:21:48,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:21:48" (2/3) ... [2018-01-21 06:21:48,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7180ea6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 06:21:48, skipping insertion in model container [2018-01-21 06:21:48,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 06:21:48" (3/3) ... [2018-01-21 06:21:48,521 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-circular_true-unreach-call_true-valid-memsafety.i [2018-01-21 06:21:48,531 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 06:21:48,540 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 06:21:48,585 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 06:21:48,585 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 06:21:48,585 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 06:21:48,585 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 06:21:48,585 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 06:21:48,585 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 06:21:48,585 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 06:21:48,586 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 06:21:48,586 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 06:21:48,602 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2018-01-21 06:21:48,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 06:21:48,607 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 06:21:48,608 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 06:21:48,608 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 06:21:48,611 INFO L82 PathProgramCache]: Analyzing trace with hash 190435, now seen corresponding path program 1 times [2018-01-21 06:21:48,613 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 06:21:48,655 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:21:48,655 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:21:48,656 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:21:48,656 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 06:21:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 06:21:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 06:21:48,705 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 06:21:48,711 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 06:21:48,717 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 06:21:48,717 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 06:21:48,717 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 06:21:48,717 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 06:21:48,717 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 06:21:48,717 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 06:21:48,717 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 06:21:48,717 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 06:21:48,718 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 06:21:48,720 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2018-01-21 06:21:48,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 06:21:48,721 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 06:21:48,721 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 06:21:48,722 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 06:21:48,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1526713431, now seen corresponding path program 1 times [2018-01-21 06:21:48,722 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 06:21:48,723 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:21:48,723 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:21:48,723 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:21:48,723 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 06:21:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 06:21:48,760 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 06:21:48,884 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 06:21:48,885 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 06:21:48,886 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 06:21:48,886 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 06:21:48,889 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 06:21:48,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 06:21:48,901 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 06:21:48,903 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 2 states. [2018-01-21 06:21:48,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 06:21:48,929 INFO L93 Difference]: Finished difference Result 126 states and 162 transitions. [2018-01-21 06:21:48,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 06:21:48,930 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-01-21 06:21:48,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 06:21:48,944 INFO L225 Difference]: With dead ends: 126 [2018-01-21 06:21:48,944 INFO L226 Difference]: Without dead ends: 66 [2018-01-21 06:21:48,947 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 06:21:48,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-01-21 06:21:48,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-01-21 06:21:48,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-01-21 06:21:48,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2018-01-21 06:21:48,991 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 25 [2018-01-21 06:21:48,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 06:21:48,992 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2018-01-21 06:21:48,992 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 06:21:48,992 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2018-01-21 06:21:48,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-21 06:21:48,994 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 06:21:48,994 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 06:21:48,994 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 06:21:48,994 INFO L82 PathProgramCache]: Analyzing trace with hash -97713131, now seen corresponding path program 1 times [2018-01-21 06:21:48,994 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 06:21:48,995 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:21:48,995 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:21:48,996 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:21:48,996 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 06:21:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 06:21:49,041 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 06:21:49,695 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 06:21:49,695 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 06:21:49,696 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-21 06:21:49,696 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 06:21:49,698 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-21 06:21:49,698 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-21 06:21:49,699 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-01-21 06:21:49,699 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 10 states. [2018-01-21 06:21:50,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 06:21:50,263 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2018-01-21 06:21:50,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-21 06:21:50,264 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2018-01-21 06:21:50,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 06:21:50,268 INFO L225 Difference]: With dead ends: 132 [2018-01-21 06:21:50,268 INFO L226 Difference]: Without dead ends: 118 [2018-01-21 06:21:50,269 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 06:21:50,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-01-21 06:21:50,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 78. [2018-01-21 06:21:50,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-01-21 06:21:50,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2018-01-21 06:21:50,281 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 33 [2018-01-21 06:21:50,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 06:21:50,282 INFO L432 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2018-01-21 06:21:50,282 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-21 06:21:50,282 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2018-01-21 06:21:50,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-01-21 06:21:50,283 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 06:21:50,284 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 06:21:50,285 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 06:21:50,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1309040711, now seen corresponding path program 1 times [2018-01-21 06:21:50,286 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 06:21:50,287 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:21:50,287 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:21:50,287 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:21:50,287 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 06:21:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 06:21:50,306 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 06:21:50,338 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 06:21:50,338 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 06:21:50,339 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 06:21:50,339 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 06:21:50,339 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 06:21:50,340 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 06:21:50,340 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 06:21:50,340 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 3 states. [2018-01-21 06:21:50,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 06:21:50,391 INFO L93 Difference]: Finished difference Result 185 states and 204 transitions. [2018-01-21 06:21:50,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 06:21:50,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-01-21 06:21:50,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 06:21:50,395 INFO L225 Difference]: With dead ends: 185 [2018-01-21 06:21:50,395 INFO L226 Difference]: Without dead ends: 130 [2018-01-21 06:21:50,396 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 06:21:50,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-01-21 06:21:50,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 96. [2018-01-21 06:21:50,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-01-21 06:21:50,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2018-01-21 06:21:50,408 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 45 [2018-01-21 06:21:50,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 06:21:50,409 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2018-01-21 06:21:50,409 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 06:21:50,409 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2018-01-21 06:21:50,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-01-21 06:21:50,411 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 06:21:50,411 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 06:21:50,411 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 06:21:50,411 INFO L82 PathProgramCache]: Analyzing trace with hash -403724794, now seen corresponding path program 1 times [2018-01-21 06:21:50,411 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 06:21:50,412 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:21:50,413 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:21:50,413 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:21:50,413 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 06:21:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 06:21:50,433 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 06:21:51,085 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 06:21:51,085 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 06:21:51,085 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-01-21 06:21:51,085 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 06:21:51,086 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-21 06:21:51,086 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-21 06:21:51,086 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-01-21 06:21:51,086 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand 13 states. [2018-01-21 06:21:51,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 06:21:51,469 INFO L93 Difference]: Finished difference Result 166 states and 181 transitions. [2018-01-21 06:21:51,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-21 06:21:51,469 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2018-01-21 06:21:51,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 06:21:51,471 INFO L225 Difference]: With dead ends: 166 [2018-01-21 06:21:51,471 INFO L226 Difference]: Without dead ends: 136 [2018-01-21 06:21:51,471 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2018-01-21 06:21:51,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-01-21 06:21:51,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 101. [2018-01-21 06:21:51,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-01-21 06:21:51,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2018-01-21 06:21:51,481 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 45 [2018-01-21 06:21:51,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 06:21:51,481 INFO L432 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2018-01-21 06:21:51,482 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-21 06:21:51,482 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2018-01-21 06:21:51,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-01-21 06:21:51,484 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 06:21:51,484 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 06:21:51,484 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 06:21:51,484 INFO L82 PathProgramCache]: Analyzing trace with hash 804308226, now seen corresponding path program 1 times [2018-01-21 06:21:51,484 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 06:21:51,485 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:21:51,486 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:21:51,486 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:21:51,486 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 06:21:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 06:21:51,504 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 06:21:51,865 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 06:21:51,866 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 06:21:51,866 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 06:21:51,866 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 50 with the following transitions: [2018-01-21 06:21:51,868 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 06:21:51,925 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 06:21:51,926 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-21 06:22:50,721 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-21 06:22:50,721 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-21 06:22:50,722 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 06:22:50,722 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 06:22:50,722 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 06:22:50,729 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:22:50,729 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 06:22:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 06:22:50,782 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 06:22:50,814 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-21 06:22:50,815 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 06:22:50,817 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 06:22:50,817 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 06:22:50,817 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 06:22:50,817 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 06:22:50,817 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 06:22:50,817 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 06:22:50,817 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 06:22:50,817 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 06:22:50,817 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 06:22:50,818 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2018-01-21 06:22:50,819 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 06:22:50,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 06:22:50 BoogieIcfgContainer [2018-01-21 06:22:50,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 06:22:50,820 INFO L168 Benchmark]: Toolchain (without parser) took 62899.66 ms. Allocated memory was 300.9 MB in the beginning and 2.1 GB in the end (delta: 1.8 GB). Free memory was 257.7 MB in the beginning and 811.3 MB in the end (delta: -553.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 5.3 GB. [2018-01-21 06:22:50,821 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 300.9 MB. Free memory is still 263.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 06:22:50,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.91 ms. Allocated memory is still 300.9 MB. Free memory was 257.7 MB in the beginning and 245.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-21 06:22:50,822 INFO L168 Benchmark]: Boogie Preprocessor took 35.22 ms. Allocated memory is still 300.9 MB. Free memory was 245.7 MB in the beginning and 243.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 06:22:50,822 INFO L168 Benchmark]: RCFGBuilder took 337.92 ms. Allocated memory is still 300.9 MB. Free memory was 243.7 MB in the beginning and 220.7 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 5.3 GB. [2018-01-21 06:22:50,822 INFO L168 Benchmark]: TraceAbstraction took 62305.09 ms. Allocated memory was 300.9 MB in the beginning and 2.1 GB in the end (delta: 1.8 GB). Free memory was 220.7 MB in the beginning and 811.3 MB in the end (delta: -590.5 MB). Peak memory consumption was 1.2 GB. Max. memory is 5.3 GB. [2018-01-21 06:22:50,825 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 300.9 MB. Free memory is still 263.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 212.91 ms. Allocated memory is still 300.9 MB. Free memory was 257.7 MB in the beginning and 245.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 35.22 ms. Allocated memory is still 300.9 MB. Free memory was 245.7 MB in the beginning and 243.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 337.92 ms. Allocated memory is still 300.9 MB. Free memory was 243.7 MB in the beginning and 220.7 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 62305.09 ms. Allocated memory was 300.9 MB in the beginning and 2.1 GB in the end (delta: 1.8 GB). Free memory was 220.7 MB in the beginning and 811.3 MB in the end (delta: -590.5 MB). Peak memory consumption was 1.2 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, 62.0s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 255 SDtfs, 645 SDslu, 553 SDs, 0 SdLazy, 383 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s 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, 58.8s 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_precise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_06-22-50-834.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_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_06-22-50-834.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_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_06-22-50-834.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_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_06-22-50-834.csv Completed graceful shutdown