java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 08:59:58,858 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 08:59:58,860 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 08:59:58,874 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 08:59:58,875 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 08:59:58,875 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 08:59:58,876 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 08:59:58,877 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 08:59:58,879 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 08:59:58,880 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 08:59:58,881 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 08:59:58,881 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 08:59:58,882 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 08:59:58,883 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 08:59:58,884 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 08:59:58,886 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 08:59:58,889 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 08:59:58,891 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 08:59:58,892 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 08:59:58,893 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 08:59:58,895 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 08:59:58,900 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 08:59:58,901 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 08:59:58,901 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf [2018-01-21 08:59:58,911 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 08:59:58,911 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 08:59:58,912 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 08:59:58,912 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 08:59:58,913 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 08:59:58,913 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 08:59:58,913 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-21 08:59:58,913 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 08:59:58,913 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 08:59:58,914 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 08:59:58,914 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 08:59:58,914 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 08:59:58,915 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 08:59:58,915 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 08:59:58,915 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 08:59:58,915 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 08:59:58,915 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 08:59:58,916 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 08:59:58,916 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 08:59:58,916 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 08:59:58,916 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 08:59:58,916 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 08:59:58,917 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 08:59:58,917 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 08:59:58,917 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 08:59:58,917 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 08:59:58,918 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 08:59:58,918 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 08:59:58,918 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 08:59:58,918 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 08:59:58,918 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 08:59:58,919 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 08:59:58,919 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 08:59:58,919 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 08:59:58,919 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 08:59:58,919 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 08:59:58,920 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 08:59:58,920 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 08:59:58,921 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 08:59:58,921 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 08:59:58,958 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 08:59:58,971 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 08:59:58,975 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 08:59:58,976 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 08:59:58,977 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 08:59:58,978 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i [2018-01-21 08:59:59,172 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 08:59:59,177 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 08:59:59,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 08:59:59,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 08:59:59,183 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 08:59:59,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:59:59" (1/1) ... [2018-01-21 08:59:59,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6479bd29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:59:59, skipping insertion in model container [2018-01-21 08:59:59,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:59:59" (1/1) ... [2018-01-21 08:59:59,200 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:59:59,239 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:59:59,351 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:59:59,371 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:59:59,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:59:59 WrapperNode [2018-01-21 08:59:59,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 08:59:59,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 08:59:59,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 08:59:59,378 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 08:59:59,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:59:59" (1/1) ... [2018-01-21 08:59:59,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:59:59" (1/1) ... [2018-01-21 08:59:59,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:59:59" (1/1) ... [2018-01-21 08:59:59,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:59:59" (1/1) ... [2018-01-21 08:59:59,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:59:59" (1/1) ... [2018-01-21 08:59:59,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:59:59" (1/1) ... [2018-01-21 08:59:59,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:59:59" (1/1) ... [2018-01-21 08:59:59,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 08:59:59,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 08:59:59,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 08:59:59,415 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 08:59:59,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:59:59" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 08:59:59,472 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 08:59:59,472 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 08:59:59,472 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 08:59:59,472 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 08:59:59,472 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 08:59:59,472 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 08:59:59,473 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 08:59:59,473 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 08:59:59,473 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 08:59:59,473 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 08:59:59,473 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 08:59:59,473 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 08:59:59,474 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 08:59:59,474 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 08:59:59,474 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 08:59:59,474 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 08:59:59,474 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 08:59:59,813 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 08:59:59,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:59:59 BoogieIcfgContainer [2018-01-21 08:59:59,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 08:59:59,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 08:59:59,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 08:59:59,818 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 08:59:59,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 08:59:59" (1/3) ... [2018-01-21 08:59:59,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b14da15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:59:59, skipping insertion in model container [2018-01-21 08:59:59,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:59:59" (2/3) ... [2018-01-21 08:59:59,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b14da15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:59:59, skipping insertion in model container [2018-01-21 08:59:59,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:59:59" (3/3) ... [2018-01-21 08:59:59,823 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i [2018-01-21 08:59:59,832 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 08:59:59,839 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 08:59:59,875 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:59:59,876 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:59:59,876 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:59:59,876 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:59:59,876 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:59:59,876 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:59:59,876 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:59:59,876 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 08:59:59,877 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:59:59,896 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2018-01-21 08:59:59,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 08:59:59,903 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:59:59,904 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 08:59:59,904 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 08:59:59,909 INFO L82 PathProgramCache]: Analyzing trace with hash 178519, now seen corresponding path program 1 times [2018-01-21 08:59:59,912 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:59:59,952 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:59:59,952 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:59:59,952 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:59:59,952 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:59:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:59:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 09:00:00,015 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 09:00:00,023 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 09:00:00,028 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 09:00:00,028 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 09:00:00,029 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 09:00:00,029 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 09:00:00,029 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 09:00:00,029 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 09:00:00,029 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 09:00:00,029 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 09:00:00,029 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 09:00:00,032 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2018-01-21 09:00:00,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-21 09:00:00,034 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 09:00:00,034 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] [2018-01-21 09:00:00,035 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 09:00:00,035 INFO L82 PathProgramCache]: Analyzing trace with hash 167119557, now seen corresponding path program 1 times [2018-01-21 09:00:00,035 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 09:00:00,036 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 09:00:00,037 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 09:00:00,037 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 09:00:00,037 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 09:00:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 09:00:00,070 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 09:00:00,117 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 09:00:00,119 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 09:00:00,119 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 09:00:00,119 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 09:00:00,193 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 09:00:00,209 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 09:00:00,209 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 09:00:00,212 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 2 states. [2018-01-21 09:00:00,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 09:00:00,241 INFO L93 Difference]: Finished difference Result 117 states and 144 transitions. [2018-01-21 09:00:00,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 09:00:00,242 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2018-01-21 09:00:00,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 09:00:00,254 INFO L225 Difference]: With dead ends: 117 [2018-01-21 09:00:00,255 INFO L226 Difference]: Without dead ends: 63 [2018-01-21 09:00:00,258 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 09:00:00,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-01-21 09:00:00,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-01-21 09:00:00,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-01-21 09:00:00,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2018-01-21 09:00:00,291 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 29 [2018-01-21 09:00:00,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 09:00:00,291 INFO L432 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2018-01-21 09:00:00,291 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 09:00:00,291 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2018-01-21 09:00:00,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-21 09:00:00,292 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 09:00:00,292 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 09:00:00,292 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 09:00:00,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1941446604, now seen corresponding path program 1 times [2018-01-21 09:00:00,293 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 09:00:00,294 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 09:00:00,294 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 09:00:00,294 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 09:00:00,294 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 09:00:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 09:00:00,322 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 09:00:00,461 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 09:00:00,461 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 09:00:00,461 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-21 09:00:00,461 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 09:00:00,463 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-21 09:00:00,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-21 09:00:00,464 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-21 09:00:00,464 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 8 states. [2018-01-21 09:00:00,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 09:00:00,903 INFO L93 Difference]: Finished difference Result 156 states and 175 transitions. [2018-01-21 09:00:00,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-21 09:00:00,904 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2018-01-21 09:00:00,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 09:00:00,909 INFO L225 Difference]: With dead ends: 156 [2018-01-21 09:00:00,909 INFO L226 Difference]: Without dead ends: 145 [2018-01-21 09:00:00,911 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2018-01-21 09:00:00,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-01-21 09:00:00,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 87. [2018-01-21 09:00:00,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-01-21 09:00:00,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2018-01-21 09:00:00,927 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 35 [2018-01-21 09:00:00,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 09:00:00,927 INFO L432 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2018-01-21 09:00:00,927 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-21 09:00:00,928 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2018-01-21 09:00:00,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-01-21 09:00:00,929 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 09:00:00,929 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] [2018-01-21 09:00:00,929 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 09:00:00,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1166710710, now seen corresponding path program 1 times [2018-01-21 09:00:00,930 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 09:00:00,931 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 09:00:00,931 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 09:00:00,931 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 09:00:00,931 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 09:00:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 09:00:00,956 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 09:00:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-21 09:00:01,011 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 09:00:01,011 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 09:00:01,011 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 09:00:01,011 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 09:00:01,012 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 09:00:01,012 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-21 09:00:01,012 INFO L87 Difference]: Start difference. First operand 87 states and 96 transitions. Second operand 5 states. [2018-01-21 09:00:01,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 09:00:01,149 INFO L93 Difference]: Finished difference Result 112 states and 123 transitions. [2018-01-21 09:00:01,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 09:00:01,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2018-01-21 09:00:01,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 09:00:01,151 INFO L225 Difference]: With dead ends: 112 [2018-01-21 09:00:01,151 INFO L226 Difference]: Without dead ends: 107 [2018-01-21 09:00:01,151 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 09:00:01,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-01-21 09:00:01,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 73. [2018-01-21 09:00:01,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-21 09:00:01,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2018-01-21 09:00:01,159 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 40 [2018-01-21 09:00:01,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 09:00:01,160 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2018-01-21 09:00:01,160 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 09:00:01,160 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2018-01-21 09:00:01,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-01-21 09:00:01,161 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 09:00:01,161 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 09:00:01,161 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 09:00:01,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1061404202, now seen corresponding path program 1 times [2018-01-21 09:00:01,162 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 09:00:01,163 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 09:00:01,163 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 09:00:01,163 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 09:00:01,163 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 09:00:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 09:00:01,191 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 09:00:01,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 09:00:01,498 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 09:00:01,498 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 09:00:01,499 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 45 with the following transitions: [2018-01-21 09:00:01,501 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [4], [8], [10], [13], [25], [35], [39], [41], [44], [57], [58], [59], [60], [61], [62], [64], [68], [70], [73], [81], [82], [86], [90], [123], [127], [131], [133], [134], [135], [136], [140], [141], [143], [144], [149], [150], [151], [152], [153] [2018-01-21 09:00:01,546 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 09:00:01,547 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown