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_test02_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 08:32:48,580 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 08:32:48,583 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 08:32:48,599 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 08:32:48,600 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 08:32:48,601 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 08:32:48,602 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 08:32:48,604 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 08:32:48,606 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 08:32:48,607 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 08:32:48,608 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 08:32:48,608 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 08:32:48,609 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 08:32:48,610 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 08:32:48,611 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 08:32:48,614 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 08:32:48,616 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 08:32:48,618 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 08:32:48,620 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 08:32:48,621 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 08:32:48,623 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 08:32:48,628 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 08:32:48,629 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 08:32:48,629 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 08:32:48,639 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 08:32:48,640 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 08:32:48,640 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 08:32:48,640 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 08:32:48,641 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 08:32:48,641 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 08:32:48,641 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-21 08:32:48,641 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 08:32:48,641 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 08:32:48,642 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 08:32:48,642 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 08:32:48,643 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 08:32:48,643 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 08:32:48,643 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 08:32:48,643 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 08:32:48,643 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 08:32:48,643 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 08:32:48,644 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 08:32:48,644 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 08:32:48,644 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 08:32:48,644 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 08:32:48,644 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 08:32:48,645 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 08:32:48,645 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 08:32:48,645 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 08:32:48,645 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 08:32:48,646 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 08:32:48,646 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 08:32:48,646 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 08:32:48,646 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 08:32:48,646 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 08:32:48,647 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 08:32:48,647 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 08:32:48,647 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 08:32:48,647 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 08:32:48,647 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 08:32:48,647 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 08:32:48,648 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 08:32:48,649 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 08:32:48,649 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 08:32:48,684 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 08:32:48,696 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 08:32:48,700 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 08:32:48,702 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 08:32:48,702 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 08:32:48,703 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext2/complex_data_creation_test02_false-valid-memtrack.i [2018-01-21 08:32:48,891 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 08:32:48,894 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 08:32:48,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 08:32:48,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 08:32:48,900 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 08:32:48,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:32:48" (1/1) ... [2018-01-21 08:32:48,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eeba7ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:32:48, skipping insertion in model container [2018-01-21 08:32:48,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:32:48" (1/1) ... [2018-01-21 08:32:48,916 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:32:48,954 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:32:49,078 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:32:49,106 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:32:49,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:32:49 WrapperNode [2018-01-21 08:32:49,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 08:32:49,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 08:32:49,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 08:32:49,115 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 08:32:49,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:32:49" (1/1) ... [2018-01-21 08:32:49,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:32:49" (1/1) ... [2018-01-21 08:32:49,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:32:49" (1/1) ... [2018-01-21 08:32:49,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:32:49" (1/1) ... [2018-01-21 08:32:49,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:32:49" (1/1) ... [2018-01-21 08:32:49,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:32:49" (1/1) ... [2018-01-21 08:32:49,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:32:49" (1/1) ... [2018-01-21 08:32:49,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 08:32:49,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 08:32:49,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 08:32:49,157 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 08:32:49,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:32:49" (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 08:32:49,203 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 08:32:49,203 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 08:32:49,203 INFO L136 BoogieDeclarations]: Found implementation of procedure create_data [2018-01-21 08:32:49,203 INFO L136 BoogieDeclarations]: Found implementation of procedure freeData [2018-01-21 08:32:49,203 INFO L136 BoogieDeclarations]: Found implementation of procedure append [2018-01-21 08:32:49,203 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 08:32:49,203 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 08:32:49,204 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 08:32:49,204 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 08:32:49,204 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 08:32:49,204 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 08:32:49,204 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 08:32:49,204 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 08:32:49,204 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 08:32:49,204 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 08:32:49,204 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 08:32:49,204 INFO L128 BoogieDeclarations]: Found specification of procedure create_data [2018-01-21 08:32:49,205 INFO L128 BoogieDeclarations]: Found specification of procedure freeData [2018-01-21 08:32:49,205 INFO L128 BoogieDeclarations]: Found specification of procedure append [2018-01-21 08:32:49,205 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 08:32:49,205 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 08:32:49,205 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 08:32:49,670 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 08:32:49,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:32:49 BoogieIcfgContainer [2018-01-21 08:32:49,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 08:32:49,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 08:32:49,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 08:32:49,675 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 08:32:49,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 08:32:48" (1/3) ... [2018-01-21 08:32:49,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c636ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:32:49, skipping insertion in model container [2018-01-21 08:32:49,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:32:49" (2/3) ... [2018-01-21 08:32:49,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c636ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:32:49, skipping insertion in model container [2018-01-21 08:32:49,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:32:49" (3/3) ... [2018-01-21 08:32:49,680 INFO L105 eAbstractionObserver]: Analyzing ICFG complex_data_creation_test02_false-valid-memtrack.i [2018-01-21 08:32:49,689 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 08:32:49,698 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-01-21 08:32:49,753 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:32:49,753 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:32:49,754 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:32:49,754 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:32:49,754 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:32:49,754 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:32:49,754 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:32:49,755 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == create_dataErr0EnsuresViolation======== [2018-01-21 08:32:49,756 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:32:49,779 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2018-01-21 08:32:49,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 08:32:49,788 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:32:49,789 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 08:32:49,789 INFO L371 AbstractCegarLoop]: === Iteration 1 === [create_dataErr0EnsuresViolation]=== [2018-01-21 08:32:49,795 INFO L82 PathProgramCache]: Analyzing trace with hash 187522691, now seen corresponding path program 1 times [2018-01-21 08:32:49,798 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:32:49,856 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:32:49,856 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:32:49,857 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:32:49,857 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:32:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:32:49,934 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:32:50,029 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 08:32:50,031 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:32:50,032 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 08:32:50,032 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:32:50,036 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 08:32:50,126 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 08:32:50,126 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:32:50,129 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 3 states. [2018-01-21 08:32:50,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:32:50,180 INFO L93 Difference]: Finished difference Result 252 states and 290 transitions. [2018-01-21 08:32:50,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 08:32:50,181 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-01-21 08:32:50,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:32:50,192 INFO L225 Difference]: With dead ends: 252 [2018-01-21 08:32:50,192 INFO L226 Difference]: Without dead ends: 98 [2018-01-21 08:32:50,197 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 08:32:50,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-01-21 08:32:50,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-01-21 08:32:50,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-01-21 08:32:50,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2018-01-21 08:32:50,237 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 25 [2018-01-21 08:32:50,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:32:50,238 INFO L432 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2018-01-21 08:32:50,238 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 08:32:50,238 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2018-01-21 08:32:50,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-21 08:32:50,240 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:32:50,240 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 08:32:50,240 INFO L371 AbstractCegarLoop]: === Iteration 2 === [create_dataErr0EnsuresViolation]=== [2018-01-21 08:32:50,241 INFO L82 PathProgramCache]: Analyzing trace with hash 358615040, now seen corresponding path program 1 times [2018-01-21 08:32:50,241 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:32:50,242 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:32:50,242 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:32:50,243 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:32:50,243 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:32:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:32:50,266 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:32:50,338 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 08:32:50,339 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:32:50,339 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 08:32:50,339 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:32:50,340 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 08:32:50,341 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 08:32:50,341 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 08:32:50,341 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 4 states. [2018-01-21 08:32:50,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:32:50,398 INFO L93 Difference]: Finished difference Result 240 states and 269 transitions. [2018-01-21 08:32:50,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 08:32:50,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-01-21 08:32:50,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:32:50,400 INFO L225 Difference]: With dead ends: 240 [2018-01-21 08:32:50,400 INFO L226 Difference]: Without dead ends: 150 [2018-01-21 08:32:50,402 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 08:32:50,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-01-21 08:32:50,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2018-01-21 08:32:50,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-01-21 08:32:50,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 165 transitions. [2018-01-21 08:32:50,412 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 165 transitions. Word has length 27 [2018-01-21 08:32:50,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:32:50,412 INFO L432 AbstractCegarLoop]: Abstraction has 149 states and 165 transitions. [2018-01-21 08:32:50,412 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 08:32:50,412 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 165 transitions. [2018-01-21 08:32:50,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-21 08:32:50,413 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:32:50,413 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 08:32:50,413 INFO L371 AbstractCegarLoop]: === Iteration 3 === [create_dataErr0EnsuresViolation]=== [2018-01-21 08:32:50,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1671536572, now seen corresponding path program 1 times [2018-01-21 08:32:50,413 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:32:50,414 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:32:50,414 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:32:50,414 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:32:50,414 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:32:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:32:50,434 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:32:50,463 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 08:32:50,464 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:32:50,464 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:32:50,464 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:32:50,464 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 08:32:50,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 08:32:50,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:32:50,465 INFO L87 Difference]: Start difference. First operand 149 states and 165 transitions. Second operand 3 states. [2018-01-21 08:32:50,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:32:50,529 INFO L93 Difference]: Finished difference Result 151 states and 167 transitions. [2018-01-21 08:32:50,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 08:32:50,530 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-01-21 08:32:50,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:32:50,532 INFO L225 Difference]: With dead ends: 151 [2018-01-21 08:32:50,532 INFO L226 Difference]: Without dead ends: 150 [2018-01-21 08:32:50,532 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 08:32:50,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-01-21 08:32:50,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-01-21 08:32:50,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-21 08:32:50,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 166 transitions. [2018-01-21 08:32:50,545 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 166 transitions. Word has length 29 [2018-01-21 08:32:50,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:32:50,545 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 166 transitions. [2018-01-21 08:32:50,545 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 08:32:50,545 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 166 transitions. [2018-01-21 08:32:50,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-01-21 08:32:50,547 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:32:50,547 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] [2018-01-21 08:32:50,547 INFO L371 AbstractCegarLoop]: === Iteration 4 === [create_dataErr0EnsuresViolation]=== [2018-01-21 08:32:50,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1893588353, now seen corresponding path program 1 times [2018-01-21 08:32:50,548 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:32:50,549 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:32:50,549 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:32:50,549 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:32:50,549 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:32:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:32:50,579 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:32:50,635 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 08:32:50,636 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:32:50,636 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 08:32:50,636 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:32:50,636 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 08:32:50,637 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 08:32:50,637 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:32:50,637 INFO L87 Difference]: Start difference. First operand 150 states and 166 transitions. Second operand 3 states. [2018-01-21 08:32:50,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:32:50,661 INFO L93 Difference]: Finished difference Result 306 states and 343 transitions. [2018-01-21 08:32:50,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 08:32:50,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2018-01-21 08:32:50,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:32:50,664 INFO L225 Difference]: With dead ends: 306 [2018-01-21 08:32:50,664 INFO L226 Difference]: Without dead ends: 164 [2018-01-21 08:32:50,665 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 08:32:50,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-01-21 08:32:50,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 154. [2018-01-21 08:32:50,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-01-21 08:32:50,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 170 transitions. [2018-01-21 08:32:50,679 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 170 transitions. Word has length 44 [2018-01-21 08:32:50,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:32:50,679 INFO L432 AbstractCegarLoop]: Abstraction has 154 states and 170 transitions. [2018-01-21 08:32:50,679 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 08:32:50,680 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 170 transitions. [2018-01-21 08:32:50,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-01-21 08:32:50,682 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:32:50,682 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] [2018-01-21 08:32:50,682 INFO L371 AbstractCegarLoop]: === Iteration 5 === [create_dataErr0EnsuresViolation]=== [2018-01-21 08:32:50,682 INFO L82 PathProgramCache]: Analyzing trace with hash 178943670, now seen corresponding path program 1 times [2018-01-21 08:32:50,682 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:32:50,683 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:32:50,683 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:32:50,683 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:32:50,683 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:32:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:32:50,710 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:32:50,766 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 08:32:50,767 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:32:50,767 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 08:32:50,768 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 52 with the following transitions: [2018-01-21 08:32:50,770 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], [80], [82], [85], [103], [105], [106], [107], [108], [112], [180], [181], [187], [188], [189], [190], [191], [192], [193], [196], [211], [215], [216], [217], [219] [2018-01-21 08:32:50,815 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 08:32:50,815 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