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/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 15:58:33,841 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 15:58:33,844 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 15:58:33,858 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 15:58:33,858 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 15:58:33,859 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 15:58:33,860 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 15:58:33,862 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 15:58:33,864 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 15:58:33,865 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 15:58:33,866 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 15:58:33,866 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 15:58:33,867 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 15:58:33,867 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 15:58:33,868 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 15:58:33,871 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 15:58:33,873 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 15:58:33,875 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 15:58:33,876 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 15:58:33,877 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 15:58:33,880 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 15:58:33,884 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 15:58:33,885 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 15:58:33,885 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf [2018-01-24 15:58:33,895 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 15:58:33,896 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 15:58:33,896 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 15:58:33,897 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 15:58:33,897 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 15:58:33,897 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 15:58:33,897 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 15:58:33,898 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 15:58:33,898 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 15:58:33,898 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 15:58:33,899 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 15:58:33,899 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 15:58:33,899 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 15:58:33,899 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 15:58:33,899 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 15:58:33,900 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 15:58:33,900 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 15:58:33,900 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 15:58:33,900 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 15:58:33,900 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 15:58:33,901 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 15:58:33,901 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 15:58:33,901 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 15:58:33,901 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 15:58:33,901 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 15:58:33,902 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 15:58:33,902 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 15:58:33,902 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 15:58:33,902 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 15:58:33,903 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 15:58:33,903 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 15:58:33,903 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 15:58:33,903 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 15:58:33,904 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 15:58:33,904 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 15:58:33,939 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 15:58:33,952 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 15:58:33,956 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 15:58:33,957 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 15:58:33,958 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 15:58:33,959 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i [2018-01-24 15:58:34,156 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 15:58:34,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 15:58:34,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 15:58:34,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 15:58:34,171 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 15:58:34,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 03:58:34" (1/1) ... [2018-01-24 15:58:34,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c336041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:58:34, skipping insertion in model container [2018-01-24 15:58:34,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 03:58:34" (1/1) ... [2018-01-24 15:58:34,195 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 15:58:34,248 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 15:58:34,355 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 15:58:34,366 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 15:58:34,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:58:34 WrapperNode [2018-01-24 15:58:34,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 15:58:34,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 15:58:34,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 15:58:34,372 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 15:58:34,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:58:34" (1/1) ... [2018-01-24 15:58:34,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:58:34" (1/1) ... [2018-01-24 15:58:34,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:58:34" (1/1) ... [2018-01-24 15:58:34,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:58:34" (1/1) ... [2018-01-24 15:58:34,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:58:34" (1/1) ... [2018-01-24 15:58:34,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:58:34" (1/1) ... [2018-01-24 15:58:34,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:58:34" (1/1) ... [2018-01-24 15:58:34,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 15:58:34,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 15:58:34,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 15:58:34,399 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 15:58:34,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:58:34" (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 [2018-01-24 15:58:34,447 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 15:58:34,447 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 15:58:34,448 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-24 15:58:34,448 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-24 15:58:34,448 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 15:58:34,448 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 15:58:34,448 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 15:58:34,448 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 15:58:34,448 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 15:58:34,448 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 15:58:34,448 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 15:58:34,448 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-24 15:58:34,449 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-24 15:58:34,449 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 15:58:34,449 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 15:58:34,449 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 15:58:34,574 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 15:58:34,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 03:58:34 BoogieIcfgContainer [2018-01-24 15:58:34,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 15:58:34,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 15:58:34,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 15:58:34,577 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 15:58:34,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 03:58:34" (1/3) ... [2018-01-24 15:58:34,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f44356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 03:58:34, skipping insertion in model container [2018-01-24 15:58:34,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:58:34" (2/3) ... [2018-01-24 15:58:34,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f44356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 03:58:34, skipping insertion in model container [2018-01-24 15:58:34,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 03:58:34" (3/3) ... [2018-01-24 15:58:34,581 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test4_false-valid-memtrack_true-termination.i [2018-01-24 15:58:34,587 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 15:58:34,592 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-24 15:58:34,636 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 15:58:34,636 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 15:58:34,636 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 15:58:34,636 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 15:58:34,636 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 15:58:34,636 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 15:58:34,636 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 15:58:34,637 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 15:58:34,637 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 15:58:34,651 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-01-24 15:58:34,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 15:58:34,656 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:58:34,657 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:58:34,657 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-24 15:58:34,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1713265670, now seen corresponding path program 1 times [2018-01-24 15:58:34,663 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:58:34,713 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:34,713 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:58:34,714 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:34,714 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:58:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:58:34,756 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:58:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:58:34,826 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:58:34,826 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 15:58:34,826 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:58:34,828 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 15:58:34,837 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 15:58:34,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 15:58:34,840 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2018-01-24 15:58:34,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:58:34,990 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2018-01-24 15:58:34,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 15:58:34,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-01-24 15:58:34,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:58:35,000 INFO L225 Difference]: With dead ends: 40 [2018-01-24 15:58:35,000 INFO L226 Difference]: Without dead ends: 33 [2018-01-24 15:58:35,003 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 15:58:35,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-01-24 15:58:35,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2018-01-24 15:58:35,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-01-24 15:58:35,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-01-24 15:58:35,033 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 16 [2018-01-24 15:58:35,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:58:35,033 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-01-24 15:58:35,033 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 15:58:35,033 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-01-24 15:58:35,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 15:58:35,034 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:58:35,034 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:58:35,035 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-24 15:58:35,035 INFO L82 PathProgramCache]: Analyzing trace with hash 295629500, now seen corresponding path program 1 times [2018-01-24 15:58:35,035 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:58:35,036 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:35,036 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:58:35,036 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:35,036 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:58:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:58:35,051 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:58:35,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:58:35,116 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:58:35,116 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 15:58:35,116 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:58:35,118 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 15:58:35,118 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 15:58:35,118 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 15:58:35,119 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 6 states. [2018-01-24 15:58:35,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:58:35,205 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-01-24 15:58:35,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 15:58:35,206 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-01-24 15:58:35,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:58:35,207 INFO L225 Difference]: With dead ends: 39 [2018-01-24 15:58:35,207 INFO L226 Difference]: Without dead ends: 35 [2018-01-24 15:58:35,208 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 15:58:35,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-01-24 15:58:35,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2018-01-24 15:58:35,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-01-24 15:58:35,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-01-24 15:58:35,214 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 18 [2018-01-24 15:58:35,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:58:35,215 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-01-24 15:58:35,215 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 15:58:35,215 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-01-24 15:58:35,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 15:58:35,216 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:58:35,216 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:58:35,216 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-24 15:58:35,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1865005914, now seen corresponding path program 1 times [2018-01-24 15:58:35,216 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:58:35,218 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:35,218 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:58:35,218 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:35,218 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:58:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:58:35,233 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:58:35,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 15:58:35,269 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:58:35,269 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 15:58:35,269 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:58:35,269 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 15:58:35,270 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 15:58:35,270 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 15:58:35,270 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2018-01-24 15:58:35,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:58:35,296 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2018-01-24 15:58:35,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 15:58:35,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-01-24 15:58:35,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:58:35,297 INFO L225 Difference]: With dead ends: 30 [2018-01-24 15:58:35,297 INFO L226 Difference]: Without dead ends: 29 [2018-01-24 15:58:35,298 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 15:58:35,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-01-24 15:58:35,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2018-01-24 15:58:35,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-01-24 15:58:35,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-01-24 15:58:35,304 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 20 [2018-01-24 15:58:35,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:58:35,305 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-01-24 15:58:35,305 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 15:58:35,305 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-01-24 15:58:35,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 15:58:35,306 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:58:35,306 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:58:35,306 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-24 15:58:35,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1865005913, now seen corresponding path program 1 times [2018-01-24 15:58:35,307 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:58:35,308 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:35,309 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:58:35,309 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:35,309 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:58:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:58:35,323 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:58:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 15:58:35,360 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:58:35,361 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 15:58:35,361 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:58:35,361 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 15:58:35,361 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 15:58:35,361 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 15:58:35,362 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2018-01-24 15:58:35,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:58:35,403 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2018-01-24 15:58:35,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 15:58:35,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-01-24 15:58:35,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:58:35,404 INFO L225 Difference]: With dead ends: 31 [2018-01-24 15:58:35,404 INFO L226 Difference]: Without dead ends: 30 [2018-01-24 15:58:35,405 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 15:58:35,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-01-24 15:58:35,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2018-01-24 15:58:35,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-01-24 15:58:35,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-01-24 15:58:35,411 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20 [2018-01-24 15:58:35,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:58:35,411 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-01-24 15:58:35,411 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 15:58:35,411 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-01-24 15:58:35,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 15:58:35,412 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:58:35,412 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] [2018-01-24 15:58:35,413 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-24 15:58:35,413 INFO L82 PathProgramCache]: Analyzing trace with hash 245416420, now seen corresponding path program 1 times [2018-01-24 15:58:35,413 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:58:35,414 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:35,414 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:58:35,414 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:35,414 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:58:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:58:35,431 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:58:35,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 15:58:35,516 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 15:58:35,516 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 15:58:35,517 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2018-01-24 15:58:35,518 INFO L201 CegarAbsIntRunner]: [0], [3], [4], [5], [6], [7], [8], [9], [17], [20], [22], [24], [30], [31], [32], [34], [36], [37], [38], [39] [2018-01-24 15:58:35,573 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 15:58:35,573 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 15:58:36,064 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-24 15:58:36,066 INFO L268 AbstractInterpreter]: Visited 20 different actions 34 times. Merged at 6 different actions 8 times. Never widened. Never found a fixpoint. Largest state had 16 variables. [2018-01-24 15:58:36,081 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-24 15:58:36,266 INFO L232 lantSequenceWeakener]: Weakened 21 states. On average, predicates are now at 75.12% of their original sizes. [2018-01-24 15:58:36,267 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-24 15:58:36,387 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-24 15:58:36,388 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-24 15:58:36,388 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 15 [2018-01-24 15:58:36,389 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:58:36,389 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-24 15:58:36,389 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-24 15:58:36,390 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-01-24 15:58:36,390 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 12 states. [2018-01-24 15:58:38,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:58:38,206 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-01-24 15:58:38,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-24 15:58:38,206 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-01-24 15:58:38,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:58:38,207 INFO L225 Difference]: With dead ends: 31 [2018-01-24 15:58:38,208 INFO L226 Difference]: Without dead ends: 30 [2018-01-24 15:58:38,208 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-01-24 15:58:38,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-01-24 15:58:38,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2018-01-24 15:58:38,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-01-24 15:58:38,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-01-24 15:58:38,214 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 22 [2018-01-24 15:58:38,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:58:38,215 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-01-24 15:58:38,215 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-24 15:58:38,215 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-01-24 15:58:38,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 15:58:38,216 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:58:38,216 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] [2018-01-24 15:58:38,216 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-24 15:58:38,217 INFO L82 PathProgramCache]: Analyzing trace with hash 245416421, now seen corresponding path program 1 times [2018-01-24 15:58:38,217 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:58:38,218 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:38,219 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:58:38,219 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:38,219 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:58:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:58:38,233 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:58:38,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 15:58:38,300 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 15:58:38,300 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 15:58:38,300 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2018-01-24 15:58:38,301 INFO L201 CegarAbsIntRunner]: [0], [3], [4], [5], [6], [7], [8], [9], [17], [20], [22], [25], [30], [31], [32], [34], [36], [37], [38], [39] [2018-01-24 15:58:38,302 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 15:58:38,302 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 15:58:38,488 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-24 15:58:38,488 INFO L268 AbstractInterpreter]: Visited 20 different actions 34 times. Merged at 6 different actions 8 times. Never widened. Never found a fixpoint. Largest state had 16 variables. [2018-01-24 15:58:38,490 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-24 15:58:38,614 INFO L232 lantSequenceWeakener]: Weakened 21 states. On average, predicates are now at 72.49% of their original sizes. [2018-01-24 15:58:38,614 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-24 15:58:38,873 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-24 15:58:38,873 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-24 15:58:38,873 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 14 [2018-01-24 15:58:38,873 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:58:38,873 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-24 15:58:38,874 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-24 15:58:38,874 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-01-24 15:58:38,874 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 11 states. [2018-01-24 15:58:40,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:58:40,377 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-01-24 15:58:40,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-24 15:58:40,378 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-01-24 15:58:40,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:58:40,379 INFO L225 Difference]: With dead ends: 27 [2018-01-24 15:58:40,379 INFO L226 Difference]: Without dead ends: 26 [2018-01-24 15:58:40,379 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-01-24 15:58:40,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-01-24 15:58:40,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2018-01-24 15:58:40,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-01-24 15:58:40,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-01-24 15:58:40,384 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 22 [2018-01-24 15:58:40,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:58:40,384 INFO L432 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-01-24 15:58:40,384 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-24 15:58:40,384 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-01-24 15:58:40,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 15:58:40,385 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:58:40,385 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:58:40,385 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-24 15:58:40,386 INFO L82 PathProgramCache]: Analyzing trace with hash -694243740, now seen corresponding path program 1 times [2018-01-24 15:58:40,386 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:58:40,387 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:40,387 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:58:40,387 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:40,387 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:58:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:58:40,397 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:58:40,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 15:58:40,498 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 15:58:40,498 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 15:58:40,498 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2018-01-24 15:58:40,499 INFO L201 CegarAbsIntRunner]: [0], [6], [7], [8], [9], [15], [17], [20], [22], [23], [29], [30], [31], [32], [34], [35], [36], [37], [38], [39] [2018-01-24 15:58:40,500 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 15:58:40,500 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 15:58:40,514 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-24 15:58:40,514 INFO L268 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Never found a fixpoint. Largest state had 14 variables. [2018-01-24 15:58:40,516 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-24 15:58:40,536 INFO L232 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 51.67% of their original sizes. [2018-01-24 15:58:40,537 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-24 15:58:40,693 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-24 15:58:40,693 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-24 15:58:40,693 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 13 [2018-01-24 15:58:40,693 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:58:40,693 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 15:58:40,693 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 15:58:40,694 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-01-24 15:58:40,694 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 10 states. [2018-01-24 15:58:41,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:58:41,338 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-01-24 15:58:41,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 15:58:41,338 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2018-01-24 15:58:41,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:58:41,338 INFO L225 Difference]: With dead ends: 39 [2018-01-24 15:58:41,338 INFO L226 Difference]: Without dead ends: 24 [2018-01-24 15:58:41,339 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2018-01-24 15:58:41,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-01-24 15:58:41,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-01-24 15:58:41,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-01-24 15:58:41,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-01-24 15:58:41,343 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 23 [2018-01-24 15:58:41,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:58:41,343 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-01-24 15:58:41,344 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 15:58:41,344 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-01-24 15:58:41,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-24 15:58:41,344 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:58:41,345 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] [2018-01-24 15:58:41,345 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-24 15:58:41,345 INFO L82 PathProgramCache]: Analyzing trace with hash -191782558, now seen corresponding path program 1 times [2018-01-24 15:58:41,345 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:58:41,346 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:41,346 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:58:41,346 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:41,346 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:58:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 15:58:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 15:58:41,398 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 15:58:41,410 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 15:58:41,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 03:58:41 BoogieIcfgContainer [2018-01-24 15:58:41,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 15:58:41,421 INFO L168 Benchmark]: Toolchain (without parser) took 7264.71 ms. Allocated memory was 307.8 MB in the beginning and 582.5 MB in the end (delta: 274.7 MB). Free memory was 266.7 MB in the beginning and 386.1 MB in the end (delta: -119.4 MB). Peak memory consumption was 155.3 MB. Max. memory is 5.3 GB. [2018-01-24 15:58:41,421 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 307.8 MB. Free memory is still 273.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 15:58:41,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.79 ms. Allocated memory is still 307.8 MB. Free memory was 266.7 MB in the beginning and 254.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 5.3 GB. [2018-01-24 15:58:41,422 INFO L168 Benchmark]: Boogie Preprocessor took 26.94 ms. Allocated memory is still 307.8 MB. Free memory was 254.5 MB in the beginning and 252.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 15:58:41,422 INFO L168 Benchmark]: RCFGBuilder took 176.28 ms. Allocated memory is still 307.8 MB. Free memory was 252.5 MB in the beginning and 239.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 5.3 GB. [2018-01-24 15:58:41,422 INFO L168 Benchmark]: TraceAbstraction took 6844.76 ms. Allocated memory was 307.8 MB in the beginning and 582.5 MB in the end (delta: 274.7 MB). Free memory was 238.4 MB in the beginning and 386.1 MB in the end (delta: -147.6 MB). Peak memory consumption was 127.1 MB. Max. memory is 5.3 GB. [2018-01-24 15:58:41,424 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 307.8 MB. Free memory is still 273.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 207.79 ms. Allocated memory is still 307.8 MB. Free memory was 266.7 MB in the beginning and 254.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 26.94 ms. Allocated memory is still 307.8 MB. Free memory was 254.5 MB in the beginning and 252.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 176.28 ms. Allocated memory is still 307.8 MB. Free memory was 252.5 MB in the beginning and 239.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 6844.76 ms. Allocated memory was 307.8 MB in the beginning and 582.5 MB in the end (delta: 274.7 MB). Free memory was 238.4 MB in the beginning and 386.1 MB in the end (delta: -147.6 MB). Peak memory consumption was 127.1 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 17 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 91 LocStat_NO_SUPPORTING_DISEQUALITIES : 11 LocStat_NO_DISJUNCTIONS : -34 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 28 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 41 TransStat_NO_SUPPORTING_DISEQUALITIES : 6 TransStat_NO_DISJUNCTIONS : 29 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.294479 RENAME_VARIABLES(MILLISECONDS) : 0.168534 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.244795 PROJECTAWAY(MILLISECONDS) : 0.541114 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.145891 DISJOIN(MILLISECONDS) : 0.893784 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.202343 ADD_EQUALITY(MILLISECONDS) : 0.026954 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.015630 #CONJOIN_DISJUNCTIVE : 59 #RENAME_VARIABLES : 118 #UNFREEZE : 0 #CONJOIN : 108 #PROJECTAWAY : 95 #ADD_WEAK_EQUALITY : 3 #DISJOIN : 14 #RENAME_VARIABLES_DISJUNCTIVE : 115 #ADD_EQUALITY : 41 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 5 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 17 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 88 LocStat_NO_SUPPORTING_DISEQUALITIES : 11 LocStat_NO_DISJUNCTIONS : -34 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 28 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 41 TransStat_NO_SUPPORTING_DISEQUALITIES : 7 TransStat_NO_DISJUNCTIONS : 29 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.154463 RENAME_VARIABLES(MILLISECONDS) : 0.074911 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.134362 PROJECTAWAY(MILLISECONDS) : 0.269006 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.075826 DISJOIN(MILLISECONDS) : 0.738130 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.093285 ADD_EQUALITY(MILLISECONDS) : 0.015957 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.011331 #CONJOIN_DISJUNCTIVE : 60 #RENAME_VARIABLES : 118 #UNFREEZE : 0 #CONJOIN : 109 #PROJECTAWAY : 95 #ADD_WEAK_EQUALITY : 3 #DISJOIN : 14 #RENAME_VARIABLES_DISJUNCTIVE : 115 #ADD_EQUALITY : 41 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 6 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 12 LocStat_MAX_WEQGRAPH_SIZE : 1 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 57 LocStat_NO_SUPPORTING_DISEQUALITIES : 0 LocStat_NO_DISJUNCTIONS : -24 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 21 TransStat_MAX_WEQGRAPH_SIZE : 1 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 24 TransStat_NO_SUPPORTING_DISEQUALITIES : 2 TransStat_NO_DISJUNCTIONS : 22 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.135513 RENAME_VARIABLES(MILLISECONDS) : 0.024929 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.050599 PROJECTAWAY(MILLISECONDS) : 0.007587 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.095439 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.037362 ADD_EQUALITY(MILLISECONDS) : 0.010621 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.004539 #CONJOIN_DISJUNCTIVE : 20 #RENAME_VARIABLES : 41 #UNFREEZE : 0 #CONJOIN : 42 #PROJECTAWAY : 42 #ADD_WEAK_EQUALITY : 1 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 40 #ADD_EQUALITY : 24 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 2 * 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: - UnprovableResult [Line: 1443]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1443. Possible FailurePath: [L1444] CALL entry_point() [L1435] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) VAL [\old(size)=4, malloc(size)={6:0}, size=4] [L1074] RET return malloc(size); VAL [\old(size)=4, \result={6:0}, malloc(size)={6:0}, size=4] [L1435] EXPR ldv_malloc(sizeof(int)) VAL [ldv_malloc(sizeof(int))={6:0}] [L1435] int *p = (int *)ldv_malloc(sizeof(int)); [L1436] COND TRUE \read(*p) VAL [p={6:0}] [L1437] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND FALSE !(__VERIFIER_nondet_int()) [L1076] RET return 0; VAL [\old(size)=4, \result={0:0}, size=4] [L1437] EXPR ldv_malloc(sizeof(int)) VAL [ldv_malloc(sizeof(int))={0:0}, p={6:0}] [L1437] int *q = (int *)ldv_malloc(sizeof(int)); [L1438] FCALL free(q) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 3 error locations. UNSAFE Result, 6.7s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 4.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 147 SDtfs, 91 SDslu, 421 SDs, 0 SdLazy, 76 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 98 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.7s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.8921130952380951 AbsIntWeakeningRatio, 0.90625 AbsIntAvgWeakeningVarsNumRemoved, 2.28125 AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 26 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 166 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 5027 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 14/20 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_15-58-41-434.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-VPDomainBenchmark-0-2018-01-24_15-58-41-434.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_15-58-41-434.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-VPDomainBenchmark-1-2018-01-24_15-58-41-434.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-1-2018-01-24_15-58-41-434.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-VPDomainBenchmark-2-2018-01-24_15-58-41-434.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-2-2018-01-24_15-58-41-434.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_15-58-41-434.csv Received shutdown request...