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/dll-simple-white-blue_true-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 08:59:08,990 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 08:59:08,992 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 08:59:09,008 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 08:59:09,009 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 08:59:09,010 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 08:59:09,011 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 08:59:09,013 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 08:59:09,015 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 08:59:09,016 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 08:59:09,017 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 08:59:09,017 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 08:59:09,018 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 08:59:09,020 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 08:59:09,021 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 08:59:09,024 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 08:59:09,026 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 08:59:09,029 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 08:59:09,030 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 08:59:09,032 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 08:59:09,034 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 08:59:09,040 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 08:59:09,041 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 08:59:09,042 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 08:59:09,079 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 08:59:09,079 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 08:59:09,080 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 08:59:09,080 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 08:59:09,080 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 08:59:09,080 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 08:59:09,081 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-21 08:59:09,081 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 08:59:09,081 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 08:59:09,081 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 08:59:09,081 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 08:59:09,082 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 08:59:09,082 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 08:59:09,082 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 08:59:09,082 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 08:59:09,082 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 08:59:09,082 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 08:59:09,082 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 08:59:09,083 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 08:59:09,083 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 08:59:09,083 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 08:59:09,083 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 08:59:09,083 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 08:59:09,083 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 08:59:09,084 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 08:59:09,084 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 08:59:09,084 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 08:59:09,084 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 08:59:09,084 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 08:59:09,084 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 08:59:09,085 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 08:59:09,085 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 08:59:09,085 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 08:59:09,085 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 08:59:09,085 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 08:59:09,085 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 08:59:09,085 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 08:59:09,085 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 08:59:09,086 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 08:59:09,086 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 08:59:09,119 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 08:59:09,130 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 08:59:09,133 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 08:59:09,135 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 08:59:09,135 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 08:59:09,136 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-simple-white-blue_true-unreach-call_false-valid-memtrack.i [2018-01-21 08:59:09,321 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 08:59:09,324 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 08:59:09,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 08:59:09,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 08:59:09,330 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 08:59:09,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:59:09" (1/1) ... [2018-01-21 08:59:09,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c517b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:59:09, skipping insertion in model container [2018-01-21 08:59:09,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:59:09" (1/1) ... [2018-01-21 08:59:09,348 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:59:09,387 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:59:09,513 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:59:09,537 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:59:09,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:59:09 WrapperNode [2018-01-21 08:59:09,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 08:59:09,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 08:59:09,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 08:59:09,548 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 08:59:09,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:59:09" (1/1) ... [2018-01-21 08:59:09,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:59:09" (1/1) ... [2018-01-21 08:59:09,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:59:09" (1/1) ... [2018-01-21 08:59:09,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:59:09" (1/1) ... [2018-01-21 08:59:09,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:59:09" (1/1) ... [2018-01-21 08:59:09,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:59:09" (1/1) ... [2018-01-21 08:59:09,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:59:09" (1/1) ... [2018-01-21 08:59:09,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 08:59:09,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 08:59:09,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 08:59:09,592 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 08:59:09,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:59:09" (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 08:59:09,641 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 08:59:09,641 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 08:59:09,641 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 08:59:09,641 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 08:59:09,641 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 08:59:09,641 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 08:59:09,642 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 08:59:09,642 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 08:59:09,642 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 08:59:09,642 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 08:59:09,642 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 08:59:09,642 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 08:59:09,642 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 08:59:09,643 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 08:59:09,643 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 08:59:09,643 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 08:59:09,643 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 08:59:10,029 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 08:59:10,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:59:10 BoogieIcfgContainer [2018-01-21 08:59:10,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 08:59:10,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 08:59:10,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 08:59:10,033 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 08:59:10,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 08:59:09" (1/3) ... [2018-01-21 08:59:10,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b009142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:59:10, skipping insertion in model container [2018-01-21 08:59:10,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:59:09" (2/3) ... [2018-01-21 08:59:10,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b009142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:59:10, skipping insertion in model container [2018-01-21 08:59:10,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:59:10" (3/3) ... [2018-01-21 08:59:10,036 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-simple-white-blue_true-unreach-call_false-valid-memtrack.i [2018-01-21 08:59:10,043 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 08:59:10,051 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 08:59:10,092 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:59:10,093 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:59:10,093 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:59:10,093 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:59:10,093 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:59:10,093 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:59:10,093 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:59:10,093 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 08:59:10,094 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:59:10,112 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2018-01-21 08:59:10,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 08:59:10,119 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:59:10,121 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 08:59:10,121 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 08:59:10,125 INFO L82 PathProgramCache]: Analyzing trace with hash 192421, now seen corresponding path program 1 times [2018-01-21 08:59:10,127 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:59:10,170 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:59:10,170 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:59:10,171 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:59:10,171 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:59:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:59:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:59:10,225 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 08:59:10,231 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:59:10,238 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:59:10,238 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:59:10,238 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:59:10,238 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:59:10,239 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:59:10,239 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:59:10,239 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:59:10,239 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 08:59:10,239 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:59:10,242 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2018-01-21 08:59:10,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-21 08:59:10,245 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:59:10,245 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] [2018-01-21 08:59:10,245 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:59:10,246 INFO L82 PathProgramCache]: Analyzing trace with hash 722719466, now seen corresponding path program 1 times [2018-01-21 08:59:10,246 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:59:10,247 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:59:10,247 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:59:10,247 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:59:10,247 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:59:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:59:10,286 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:59:10,427 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 08:59:10,430 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:59:10,430 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:59:10,430 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:59:10,433 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 08:59:10,449 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 08:59:10,450 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:59:10,453 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 2 states. [2018-01-21 08:59:10,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:59:10,484 INFO L93 Difference]: Finished difference Result 133 states and 162 transitions. [2018-01-21 08:59:10,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 08:59:10,485 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2018-01-21 08:59:10,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:59:10,499 INFO L225 Difference]: With dead ends: 133 [2018-01-21 08:59:10,499 INFO L226 Difference]: Without dead ends: 73 [2018-01-21 08:59:10,503 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 08:59:10,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-01-21 08:59:10,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-01-21 08:59:10,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-21 08:59:10,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2018-01-21 08:59:10,536 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 31 [2018-01-21 08:59:10,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:59:10,537 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2018-01-21 08:59:10,537 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 08:59:10,537 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2018-01-21 08:59:10,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-21 08:59:10,538 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:59:10,538 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:59:10,538 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:59:10,539 INFO L82 PathProgramCache]: Analyzing trace with hash 387707444, now seen corresponding path program 1 times [2018-01-21 08:59:10,539 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:59:10,540 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:59:10,540 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:59:10,540 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:59:10,540 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:59:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:59:10,576 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:59:10,687 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 08:59:10,687 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:59:10,688 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 08:59:10,688 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:59:10,690 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 08:59:10,690 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 08:59:10,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-21 08:59:10,691 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand 5 states. [2018-01-21 08:59:10,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:59:10,857 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2018-01-21 08:59:10,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 08:59:10,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2018-01-21 08:59:10,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:59:10,863 INFO L225 Difference]: With dead ends: 118 [2018-01-21 08:59:10,864 INFO L226 Difference]: Without dead ends: 113 [2018-01-21 08:59:10,865 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 08:59:10,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-01-21 08:59:10,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 90. [2018-01-21 08:59:10,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-01-21 08:59:10,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2018-01-21 08:59:10,877 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 37 [2018-01-21 08:59:10,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:59:10,877 INFO L432 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2018-01-21 08:59:10,877 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 08:59:10,877 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2018-01-21 08:59:10,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-21 08:59:10,879 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:59:10,879 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:59:10,879 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:59:10,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1479512725, now seen corresponding path program 1 times [2018-01-21 08:59:10,879 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:59:10,880 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:59:10,880 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:59:10,880 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:59:10,880 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:59:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:59:10,900 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:59:11,002 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 08:59:11,003 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:59:11,003 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 08:59:11,003 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:59:11,003 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 08:59:11,004 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 08:59:11,004 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-21 08:59:11,004 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 5 states. [2018-01-21 08:59:11,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:59:11,185 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2018-01-21 08:59:11,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 08:59:11,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2018-01-21 08:59:11,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:59:11,187 INFO L225 Difference]: With dead ends: 144 [2018-01-21 08:59:11,187 INFO L226 Difference]: Without dead ends: 139 [2018-01-21 08:59:11,188 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-21 08:59:11,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-01-21 08:59:11,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 75. [2018-01-21 08:59:11,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-01-21 08:59:11,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2018-01-21 08:59:11,198 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 41 [2018-01-21 08:59:11,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:59:11,199 INFO L432 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2018-01-21 08:59:11,199 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 08:59:11,199 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2018-01-21 08:59:11,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-01-21 08:59:11,201 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:59:11,201 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] [2018-01-21 08:59:11,201 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:59:11,201 INFO L82 PathProgramCache]: Analyzing trace with hash -832067523, now seen corresponding path program 1 times [2018-01-21 08:59:11,201 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:59:11,203 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:59:11,203 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:59:11,203 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:59:11,203 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:59:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:59:11,230 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:59:11,419 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 08:59:11,420 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:59:11,420 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 08:59:11,421 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 43 with the following transitions: [2018-01-21 08:59:11,423 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [4], [5], [9], [11], [14], [29], [32], [33], [34], [35], [36], [37], [38], [78], [82], [84], [87], [95], [96], [100], [104], [137], [141], [145], [147], [148], [149], [150], [154], [155], [157], [158], [163], [164], [165], [166], [167] [2018-01-21 08:59:11,492 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 08:59:11,492 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