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/memsafety-ext2/complex_data_creation_test01_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 08:34:03,328 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 08:34:03,330 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 08:34:03,344 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 08:34:03,345 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 08:34:03,346 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 08:34:03,347 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 08:34:03,349 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 08:34:03,350 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 08:34:03,351 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 08:34:03,352 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-01-21 08:34:03,372 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 08:34:03,382 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 08:34:03,382 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 08:34:03,383 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 08:34:03,383 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 08:34:03,384 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 08:34:03,384 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 08:34:03,384 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-21 08:34:03,384 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 08:34:03,384 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 08:34:03,385 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 08:34:03,385 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 08:34:03,386 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 08:34:03,386 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 08:34:03,386 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 08:34:03,386 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 08:34:03,386 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 08:34:03,387 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 08:34:03,387 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 08:34:03,387 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 08:34:03,387 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 08:34:03,387 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 08:34:03,387 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 08:34:03,388 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 08:34:03,388 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 08:34:03,388 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 08:34:03,388 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 08:34:03,389 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 08:34:03,389 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 08:34:03,389 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 08:34:03,389 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 08:34:03,389 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 08:34:03,390 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 08:34:03,390 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 08:34:03,390 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 08:34:03,390 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 08:34:03,390 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 08:34:03,391 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 08:34:03,391 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 08:34:03,392 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 08:34:03,392 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 08:34:03,428 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 08:34:03,441 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 08:34:03,445 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 08:34:03,446 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 08:34:03,447 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 08:34:03,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext2/complex_data_creation_test01_true-valid-memsafety.i [2018-01-21 08:34:03,630 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 08:34:03,635 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 08:34:03,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 08:34:03,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 08:34:03,641 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 08:34:03,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:34:03" (1/1) ... [2018-01-21 08:34:03,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42bb0702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:34:03, skipping insertion in model container [2018-01-21 08:34:03,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:34:03" (1/1) ... [2018-01-21 08:34:03,657 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:34:03,697 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:34:03,819 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:34:03,844 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:34:03,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:34:03 WrapperNode [2018-01-21 08:34:03,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 08:34:03,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 08:34:03,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 08:34:03,853 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 08:34:03,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:34:03" (1/1) ... [2018-01-21 08:34:03,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:34:03" (1/1) ... [2018-01-21 08:34:03,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:34:03" (1/1) ... [2018-01-21 08:34:03,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:34:03" (1/1) ... [2018-01-21 08:34:03,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:34:03" (1/1) ... [2018-01-21 08:34:03,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:34:03" (1/1) ... [2018-01-21 08:34:03,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:34:03" (1/1) ... [2018-01-21 08:34:03,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 08:34:03,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 08:34:03,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 08:34:03,895 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 08:34:03,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:34:03" (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 08:34:03,954 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 08:34:03,954 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 08:34:03,954 INFO L136 BoogieDeclarations]: Found implementation of procedure create_data [2018-01-21 08:34:03,954 INFO L136 BoogieDeclarations]: Found implementation of procedure freeData [2018-01-21 08:34:03,954 INFO L136 BoogieDeclarations]: Found implementation of procedure append [2018-01-21 08:34:03,955 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 08:34:03,955 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 08:34:03,955 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 08:34:03,955 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 08:34:03,955 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 08:34:03,955 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 08:34:03,955 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 08:34:03,956 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 08:34:03,956 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 08:34:03,956 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 08:34:03,956 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 08:34:03,956 INFO L128 BoogieDeclarations]: Found specification of procedure create_data [2018-01-21 08:34:03,956 INFO L128 BoogieDeclarations]: Found specification of procedure freeData [2018-01-21 08:34:03,957 INFO L128 BoogieDeclarations]: Found specification of procedure append [2018-01-21 08:34:03,957 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 08:34:03,957 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 08:34:03,957 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 08:34:04,400 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 08:34:04,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:34:04 BoogieIcfgContainer [2018-01-21 08:34:04,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 08:34:04,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 08:34:04,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 08:34:04,405 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 08:34:04,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 08:34:03" (1/3) ... [2018-01-21 08:34:04,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307db43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:34:04, skipping insertion in model container [2018-01-21 08:34:04,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:34:03" (2/3) ... [2018-01-21 08:34:04,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307db43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:34:04, skipping insertion in model container [2018-01-21 08:34:04,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:34:04" (3/3) ... [2018-01-21 08:34:04,410 INFO L105 eAbstractionObserver]: Analyzing ICFG complex_data_creation_test01_true-valid-memsafety.i [2018-01-21 08:34:04,419 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 08:34:04,428 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-01-21 08:34:04,470 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:34:04,470 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:34:04,470 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:34:04,471 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:34:04,471 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:34:04,471 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:34:04,471 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:34:04,471 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == create_dataErr0EnsuresViolation======== [2018-01-21 08:34:04,472 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:34:04,497 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2018-01-21 08:34:04,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 08:34:04,507 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:34:04,508 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:34:04,509 INFO L371 AbstractCegarLoop]: === Iteration 1 === [create_dataErr0EnsuresViolation]=== [2018-01-21 08:34:04,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1561242995, now seen corresponding path program 1 times [2018-01-21 08:34:04,517 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:34:04,560 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:34:04,561 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:34:04,561 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:34:04,561 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:34:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:34:04,640 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:34:04,744 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 08:34:04,746 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:34:04,747 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 08:34:04,747 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:34:04,751 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 08:34:04,838 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 08:34:04,839 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:34:04,842 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 3 states. [2018-01-21 08:34:04,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:34:04,894 INFO L93 Difference]: Finished difference Result 248 states and 284 transitions. [2018-01-21 08:34:04,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 08:34:04,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-01-21 08:34:04,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:34:04,907 INFO L225 Difference]: With dead ends: 248 [2018-01-21 08:34:04,907 INFO L226 Difference]: Without dead ends: 96 [2018-01-21 08:34:04,912 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:34:04,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-01-21 08:34:04,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-01-21 08:34:04,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-01-21 08:34:04,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2018-01-21 08:34:04,955 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 25 [2018-01-21 08:34:04,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:34:04,956 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2018-01-21 08:34:04,956 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 08:34:04,956 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2018-01-21 08:34:04,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-21 08:34:04,958 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:34:04,959 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] [2018-01-21 08:34:04,959 INFO L371 AbstractCegarLoop]: === Iteration 2 === [create_dataErr0EnsuresViolation]=== [2018-01-21 08:34:04,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1948874992, now seen corresponding path program 1 times [2018-01-21 08:34:04,959 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:34:04,960 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:34:04,960 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:34:04,960 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:34:04,961 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:34:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:34:04,985 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:34:05,069 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 08:34:05,069 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:34:05,069 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 08:34:05,070 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:34:05,071 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 08:34:05,072 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 08:34:05,072 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 08:34:05,072 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand 4 states. [2018-01-21 08:34:05,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:34:05,127 INFO L93 Difference]: Finished difference Result 234 states and 263 transitions. [2018-01-21 08:34:05,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 08:34:05,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-01-21 08:34:05,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:34:05,130 INFO L225 Difference]: With dead ends: 234 [2018-01-21 08:34:05,130 INFO L226 Difference]: Without dead ends: 146 [2018-01-21 08:34:05,132 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-21 08:34:05,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-21 08:34:05,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2018-01-21 08:34:05,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-01-21 08:34:05,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 161 transitions. [2018-01-21 08:34:05,142 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 161 transitions. Word has length 27 [2018-01-21 08:34:05,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:34:05,142 INFO L432 AbstractCegarLoop]: Abstraction has 145 states and 161 transitions. [2018-01-21 08:34:05,142 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 08:34:05,142 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 161 transitions. [2018-01-21 08:34:05,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-21 08:34:05,143 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:34:05,143 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 08:34:05,143 INFO L371 AbstractCegarLoop]: === Iteration 3 === [create_dataErr0EnsuresViolation]=== [2018-01-21 08:34:05,143 INFO L82 PathProgramCache]: Analyzing trace with hash -245124692, now seen corresponding path program 1 times [2018-01-21 08:34:05,143 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:34:05,144 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:34:05,145 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:34:05,145 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:34:05,145 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:34:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:34:05,170 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:34:05,202 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 08:34:05,203 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:34:05,203 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:34:05,203 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:34:05,203 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 08:34:05,204 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 08:34:05,204 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:34:05,204 INFO L87 Difference]: Start difference. First operand 145 states and 161 transitions. Second operand 3 states. [2018-01-21 08:34:05,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:34:05,263 INFO L93 Difference]: Finished difference Result 147 states and 163 transitions. [2018-01-21 08:34:05,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 08:34:05,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-01-21 08:34:05,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:34:05,265 INFO L225 Difference]: With dead ends: 147 [2018-01-21 08:34:05,265 INFO L226 Difference]: Without dead ends: 146 [2018-01-21 08:34:05,266 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:34:05,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-21 08:34:05,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-01-21 08:34:05,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-01-21 08:34:05,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 162 transitions. [2018-01-21 08:34:05,279 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 162 transitions. Word has length 29 [2018-01-21 08:34:05,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:34:05,280 INFO L432 AbstractCegarLoop]: Abstraction has 146 states and 162 transitions. [2018-01-21 08:34:05,280 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 08:34:05,280 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 162 transitions. [2018-01-21 08:34:05,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-21 08:34:05,282 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:34:05,282 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:34:05,283 INFO L371 AbstractCegarLoop]: === Iteration 4 === [create_dataErr0EnsuresViolation]=== [2018-01-21 08:34:05,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1224197024, now seen corresponding path program 1 times [2018-01-21 08:34:05,283 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:34:05,284 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:34:05,284 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:34:05,284 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:34:05,285 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:34:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:34:05,312 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:34:05,354 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 08:34:05,354 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:34:05,355 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 08:34:05,355 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:34:05,355 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 08:34:05,355 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 08:34:05,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:34:05,356 INFO L87 Difference]: Start difference. First operand 146 states and 162 transitions. Second operand 3 states. [2018-01-21 08:34:05,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:34:05,401 INFO L93 Difference]: Finished difference Result 298 states and 335 transitions. [2018-01-21 08:34:05,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 08:34:05,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2018-01-21 08:34:05,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:34:05,403 INFO L225 Difference]: With dead ends: 298 [2018-01-21 08:34:05,403 INFO L226 Difference]: Without dead ends: 160 [2018-01-21 08:34:05,404 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:34:05,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-01-21 08:34:05,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 150. [2018-01-21 08:34:05,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-21 08:34:05,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 166 transitions. [2018-01-21 08:34:05,418 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 166 transitions. Word has length 43 [2018-01-21 08:34:05,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:34:05,418 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 166 transitions. [2018-01-21 08:34:05,418 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 08:34:05,418 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 166 transitions. [2018-01-21 08:34:05,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-01-21 08:34:05,420 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:34:05,421 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, 1, 1, 1, 1, 1, 1] [2018-01-21 08:34:05,421 INFO L371 AbstractCegarLoop]: === Iteration 5 === [create_dataErr0EnsuresViolation]=== [2018-01-21 08:34:05,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1546322841, now seen corresponding path program 1 times [2018-01-21 08:34:05,421 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:34:05,422 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:34:05,422 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:34:05,422 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:34:05,423 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:34:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:34:05,447 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:34:05,507 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 08:34:05,507 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:34:05,507 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 08:34:05,508 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 51 with the following transitions: [2018-01-21 08:34:05,510 INFO L201 CegarAbsIntRunner]: [0], [7], [14], [15], [16], [17], [18], [19], [23], [26], [28], [29], [30], [31], [32], [34], [38], [39], [43], [45], [52], [54], [61], [65], [75], [91], [92], [93], [95], [97], [98], [99], [100], [104], [172], [173], [179], [180], [181], [182], [183], [184], [185], [188], [203], [207], [208], [209], [211] [2018-01-21 08:34:05,556 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 08:34:05,556 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