java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf -i ../../../trunk/examples/svcomp/memsafety-ext2/complex_data_creation_test02_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 05:52:47,779 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 05:52:47,781 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 05:52:47,796 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 05:52:47,797 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 05:52:47,798 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 05:52:47,799 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 05:52:47,801 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 05:52:47,803 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 05:52:47,804 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 05:52:47,805 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 05:52:47,805 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 05:52:47,806 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 05:52:47,807 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 05:52:47,808 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 05:52:47,811 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 05:52:47,813 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 05:52:47,815 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 05:52:47,817 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 05:52:47,818 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 05:52:47,820 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 05:52:47,826 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 05:52:47,826 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 05:52:47,827 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf [2018-01-21 05:52:47,835 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 05:52:47,835 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 05:52:47,836 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 05:52:47,836 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 05:52:47,836 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 05:52:47,836 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 05:52:47,836 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 05:52:47,837 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 05:52:47,837 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 05:52:47,837 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 05:52:47,837 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 05:52:47,837 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 05:52:47,837 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 05:52:47,838 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 05:52:47,838 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 05:52:47,838 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 05:52:47,838 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 05:52:47,838 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 05:52:47,838 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 05:52:47,838 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 05:52:47,838 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 05:52:47,839 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 05:52:47,839 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 05:52:47,839 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 05:52:47,839 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 05:52:47,839 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 05:52:47,840 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 05:52:47,840 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 05:52:47,840 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 05:52:47,840 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 05:52:47,840 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 05:52:47,840 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 05:52:47,840 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 05:52:47,840 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 05:52:47,841 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 05:52:47,841 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 05:52:47,841 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 05:52:47,841 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 05:52:47,841 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 05:52:47,873 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 05:52:47,884 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 05:52:47,887 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 05:52:47,889 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 05:52:47,889 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 05:52:47,890 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext2/complex_data_creation_test02_true-valid-memsafety.i [2018-01-21 05:52:48,075 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 05:52:48,079 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 05:52:48,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 05:52:48,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 05:52:48,085 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 05:52:48,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:52:48" (1/1) ... [2018-01-21 05:52:48,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50990cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:52:48, skipping insertion in model container [2018-01-21 05:52:48,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:52:48" (1/1) ... [2018-01-21 05:52:48,102 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:52:48,140 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:52:48,265 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:52:48,294 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:52:48,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:52:48 WrapperNode [2018-01-21 05:52:48,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 05:52:48,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 05:52:48,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 05:52:48,307 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 05:52:48,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:52:48" (1/1) ... [2018-01-21 05:52:48,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:52:48" (1/1) ... [2018-01-21 05:52:48,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:52:48" (1/1) ... [2018-01-21 05:52:48,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:52:48" (1/1) ... [2018-01-21 05:52:48,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:52:48" (1/1) ... [2018-01-21 05:52:48,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:52:48" (1/1) ... [2018-01-21 05:52:48,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:52:48" (1/1) ... [2018-01-21 05:52:48,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 05:52:48,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 05:52:48,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 05:52:48,350 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 05:52:48,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:52:48" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 05:52:48,401 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 05:52:48,402 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 05:52:48,402 INFO L136 BoogieDeclarations]: Found implementation of procedure create_data [2018-01-21 05:52:48,402 INFO L136 BoogieDeclarations]: Found implementation of procedure freeData [2018-01-21 05:52:48,402 INFO L136 BoogieDeclarations]: Found implementation of procedure append [2018-01-21 05:52:48,402 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 05:52:48,402 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 05:52:48,402 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 05:52:48,403 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 05:52:48,403 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 05:52:48,403 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 05:52:48,403 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 05:52:48,403 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 05:52:48,403 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 05:52:48,404 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 05:52:48,404 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 05:52:48,404 INFO L128 BoogieDeclarations]: Found specification of procedure create_data [2018-01-21 05:52:48,404 INFO L128 BoogieDeclarations]: Found specification of procedure freeData [2018-01-21 05:52:48,404 INFO L128 BoogieDeclarations]: Found specification of procedure append [2018-01-21 05:52:48,404 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 05:52:48,404 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 05:52:48,405 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 05:52:48,917 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 05:52:48,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:52:48 BoogieIcfgContainer [2018-01-21 05:52:48,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 05:52:48,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 05:52:48,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 05:52:48,920 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 05:52:48,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 05:52:48" (1/3) ... [2018-01-21 05:52:48,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5496367d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:52:48, skipping insertion in model container [2018-01-21 05:52:48,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:52:48" (2/3) ... [2018-01-21 05:52:48,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5496367d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:52:48, skipping insertion in model container [2018-01-21 05:52:48,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:52:48" (3/3) ... [2018-01-21 05:52:48,923 INFO L105 eAbstractionObserver]: Analyzing ICFG complex_data_creation_test02_true-valid-memsafety.i [2018-01-21 05:52:48,929 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 05:52:48,936 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-01-21 05:52:48,987 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:52:48,987 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:52:48,987 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:52:48,987 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:52:48,987 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:52:48,988 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:52:48,988 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:52:48,988 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == create_dataErr0EnsuresViolation======== [2018-01-21 05:52:48,989 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:52:49,011 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2018-01-21 05:52:49,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 05:52:49,020 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:52:49,021 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 05:52:49,021 INFO L371 AbstractCegarLoop]: === Iteration 1 === [create_dataErr0EnsuresViolation]=== [2018-01-21 05:52:49,026 INFO L82 PathProgramCache]: Analyzing trace with hash 15807653, now seen corresponding path program 1 times [2018-01-21 05:52:49,029 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:52:49,076 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:52:49,076 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:52:49,077 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:52:49,077 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:52:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:52:49,143 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:52:49,225 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 05:52:49,228 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:52:49,228 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 05:52:49,228 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:52:49,232 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 05:52:49,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 05:52:49,326 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 05:52:49,329 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 3 states. [2018-01-21 05:52:49,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:52:49,378 INFO L93 Difference]: Finished difference Result 254 states and 292 transitions. [2018-01-21 05:52:49,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 05:52:49,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-01-21 05:52:49,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:52:49,390 INFO L225 Difference]: With dead ends: 254 [2018-01-21 05:52:49,391 INFO L226 Difference]: Without dead ends: 99 [2018-01-21 05:52:49,395 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 05:52:49,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-01-21 05:52:49,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-01-21 05:52:49,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-01-21 05:52:49,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 110 transitions. [2018-01-21 05:52:49,437 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 110 transitions. Word has length 25 [2018-01-21 05:52:49,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:52:49,437 INFO L432 AbstractCegarLoop]: Abstraction has 99 states and 110 transitions. [2018-01-21 05:52:49,437 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 05:52:49,437 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 110 transitions. [2018-01-21 05:52:49,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-21 05:52:49,440 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:52:49,440 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 05:52:49,440 INFO L371 AbstractCegarLoop]: === Iteration 2 === [create_dataErr0EnsuresViolation]=== [2018-01-21 05:52:49,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1450780190, now seen corresponding path program 1 times [2018-01-21 05:52:49,440 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:52:49,441 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:52:49,441 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:52:49,442 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:52:49,442 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:52:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:52:49,466 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:52:49,551 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 05:52:49,551 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:52:49,552 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 05:52:49,552 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:52:49,553 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 05:52:49,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 05:52:49,554 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 05:52:49,554 INFO L87 Difference]: Start difference. First operand 99 states and 110 transitions. Second operand 4 states. [2018-01-21 05:52:49,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:52:49,605 INFO L93 Difference]: Finished difference Result 243 states and 272 transitions. [2018-01-21 05:52:49,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 05:52:49,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-01-21 05:52:49,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:52:49,608 INFO L225 Difference]: With dead ends: 243 [2018-01-21 05:52:49,608 INFO L226 Difference]: Without dead ends: 152 [2018-01-21 05:52:49,610 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 05:52:49,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-01-21 05:52:49,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2018-01-21 05:52:49,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-01-21 05:52:49,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 167 transitions. [2018-01-21 05:52:49,625 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 167 transitions. Word has length 27 [2018-01-21 05:52:49,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:52:49,625 INFO L432 AbstractCegarLoop]: Abstraction has 151 states and 167 transitions. [2018-01-21 05:52:49,625 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 05:52:49,625 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 167 transitions. [2018-01-21 05:52:49,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-21 05:52:49,626 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:52:49,626 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 05:52:49,626 INFO L371 AbstractCegarLoop]: === Iteration 3 === [create_dataErr0EnsuresViolation]=== [2018-01-21 05:52:49,626 INFO L82 PathProgramCache]: Analyzing trace with hash 300506494, now seen corresponding path program 1 times [2018-01-21 05:52:49,626 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:52:49,627 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:52:49,627 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:52:49,627 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:52:49,627 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:52:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:52:49,646 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:52:49,687 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 05:52:49,687 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:52:49,687 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 05:52:49,687 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:52:49,688 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 05:52:49,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 05:52:49,688 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 05:52:49,688 INFO L87 Difference]: Start difference. First operand 151 states and 167 transitions. Second operand 3 states. [2018-01-21 05:52:49,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:52:49,785 INFO L93 Difference]: Finished difference Result 153 states and 169 transitions. [2018-01-21 05:52:49,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 05:52:49,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-01-21 05:52:49,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:52:49,787 INFO L225 Difference]: With dead ends: 153 [2018-01-21 05:52:49,787 INFO L226 Difference]: Without dead ends: 152 [2018-01-21 05:52:49,788 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 05:52:49,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-01-21 05:52:49,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-01-21 05:52:49,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-01-21 05:52:49,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 168 transitions. [2018-01-21 05:52:49,802 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 168 transitions. Word has length 29 [2018-01-21 05:52:49,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:52:49,802 INFO L432 AbstractCegarLoop]: Abstraction has 152 states and 168 transitions. [2018-01-21 05:52:49,802 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 05:52:49,802 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 168 transitions. [2018-01-21 05:52:49,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-01-21 05:52:49,804 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:52:49,805 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:52:49,805 INFO L371 AbstractCegarLoop]: === Iteration 4 === [create_dataErr0EnsuresViolation]=== [2018-01-21 05:52:49,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1126752096, now seen corresponding path program 1 times [2018-01-21 05:52:49,805 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:52:49,806 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:52:49,806 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:52:49,806 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:52:49,806 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:52:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:52:49,832 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:52:49,875 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 05:52:49,875 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:52:49,875 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 05:52:49,875 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:52:49,876 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 05:52:49,876 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 05:52:49,876 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 05:52:49,877 INFO L87 Difference]: Start difference. First operand 152 states and 168 transitions. Second operand 3 states. [2018-01-21 05:52:49,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:52:49,903 INFO L93 Difference]: Finished difference Result 310 states and 347 transitions. [2018-01-21 05:52:49,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 05:52:49,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-01-21 05:52:49,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:52:49,905 INFO L225 Difference]: With dead ends: 310 [2018-01-21 05:52:49,905 INFO L226 Difference]: Without dead ends: 166 [2018-01-21 05:52:49,906 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 05:52:49,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-01-21 05:52:49,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 156. [2018-01-21 05:52:49,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-01-21 05:52:49,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 172 transitions. [2018-01-21 05:52:49,928 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 172 transitions. Word has length 45 [2018-01-21 05:52:49,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:52:49,928 INFO L432 AbstractCegarLoop]: Abstraction has 156 states and 172 transitions. [2018-01-21 05:52:49,928 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 05:52:49,928 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 172 transitions. [2018-01-21 05:52:49,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-01-21 05:52:49,930 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:52:49,931 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, 1, 1] [2018-01-21 05:52:49,931 INFO L371 AbstractCegarLoop]: === Iteration 5 === [create_dataErr0EnsuresViolation]=== [2018-01-21 05:52:49,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1796279385, now seen corresponding path program 1 times [2018-01-21 05:52:49,931 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:52:49,932 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:52:49,932 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:52:49,932 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:52:49,932 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:52:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:52:49,958 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:52:50,013 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 05:52:50,013 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 05:52:50,013 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 05:52:50,014 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 53 with the following transitions: [2018-01-21 05:52:50,016 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], [76], [77], [81], [83], [86], [104], [106], [107], [108], [109], [113], [181], [182], [188], [189], [190], [191], [192], [193], [194], [197], [212], [216], [217], [218], [220] [2018-01-21 05:52:50,061 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 05:52:50,061 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