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/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf -i ../../../trunk/examples/svcomp/list-ext-properties/960521-1_1_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:28:07,427 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:28:07,428 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:28:07,443 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:28:07,443 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:28:07,444 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:28:07,445 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:28:07,447 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:28:07,450 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:28:07,451 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:28:07,451 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:28:07,452 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:28:07,453 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:28:07,453 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:28:07,454 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:28:07,457 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:28:07,459 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:28:07,461 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:28:07,463 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:28:07,464 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:28:07,466 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 20:28:07,467 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 20:28:07,467 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 20:28:07,468 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 20:28:07,469 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 20:28:07,470 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 20:28:07,470 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 20:28:07,471 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 20:28:07,471 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 20:28:07,471 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:28:07,472 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:28:07,472 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf [2018-01-24 20:28:07,482 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:28:07,483 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:28:07,483 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:28:07,484 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:28:07,484 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:28:07,484 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:28:07,484 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:28:07,484 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:28:07,484 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:28:07,485 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:28:07,485 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:28:07,486 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:28:07,486 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:28:07,486 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:28:07,486 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:28:07,486 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:28:07,487 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:28:07,487 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:28:07,487 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:28:07,487 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:28:07,487 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:28:07,488 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:28:07,488 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:28:07,488 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:28:07,488 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:28:07,488 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:28:07,489 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:28:07,489 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:28:07,489 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:28:07,489 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:28:07,489 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:28:07,489 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:28:07,490 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:28:07,490 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:28:07,490 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:28:07,491 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:28:07,491 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:28:07,526 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:28:07,535 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:28:07,540 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:28:07,542 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:28:07,542 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:28:07,543 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/960521-1_1_true-valid-memsafety.i [2018-01-24 20:28:07,710 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:28:07,716 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:28:07,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:28:07,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:28:07,724 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:28:07,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:28:07" (1/1) ... [2018-01-24 20:28:07,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dbac6c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:28:07, skipping insertion in model container [2018-01-24 20:28:07,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:28:07" (1/1) ... [2018-01-24 20:28:07,747 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:28:07,785 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:28:07,900 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:28:07,916 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:28:07,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:28:07 WrapperNode [2018-01-24 20:28:07,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:28:07,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:28:07,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:28:07,926 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:28:07,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:28:07" (1/1) ... [2018-01-24 20:28:07,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:28:07" (1/1) ... [2018-01-24 20:28:07,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:28:07" (1/1) ... [2018-01-24 20:28:07,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:28:07" (1/1) ... [2018-01-24 20:28:07,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:28:07" (1/1) ... [2018-01-24 20:28:07,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:28:07" (1/1) ... [2018-01-24 20:28:07,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:28:07" (1/1) ... [2018-01-24 20:28:07,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:28:07,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:28:07,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:28:07,960 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:28:07,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:28:07" (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 [2018-01-24 20:28:08,008 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:28:08,008 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:28:08,008 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-01-24 20:28:08,008 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:28:08,008 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 20:28:08,008 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 20:28:08,008 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:28:08,008 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:28:08,009 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:28:08,009 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:28:08,009 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:28:08,009 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:28:08,009 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-01-24 20:28:08,009 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:28:08,009 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:28:08,009 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:28:08,252 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:28:08,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:28:08 BoogieIcfgContainer [2018-01-24 20:28:08,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:28:08,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:28:08,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:28:08,287 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:28:08,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:28:07" (1/3) ... [2018-01-24 20:28:08,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fef6bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:28:08, skipping insertion in model container [2018-01-24 20:28:08,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:28:07" (2/3) ... [2018-01-24 20:28:08,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fef6bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:28:08, skipping insertion in model container [2018-01-24 20:28:08,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:28:08" (3/3) ... [2018-01-24 20:28:08,291 INFO L105 eAbstractionObserver]: Analyzing ICFG 960521-1_1_true-valid-memsafety.i [2018-01-24 20:28:08,297 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:28:08,303 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2018-01-24 20:28:08,350 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:28:08,350 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:28:08,350 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:28:08,350 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:28:08,350 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:28:08,351 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:28:08,351 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:28:08,351 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:28:08,352 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:28:08,374 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2018-01-24 20:28:08,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-24 20:28:08,380 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:28:08,381 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:28:08,381 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation]=== [2018-01-24 20:28:08,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1159416495, now seen corresponding path program 1 times [2018-01-24 20:28:08,387 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:28:08,431 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:28:08,431 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:28:08,431 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:28:08,431 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:28:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:28:08,482 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:28:08,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:28:08,521 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:28:08,521 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 20:28:08,522 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:28:08,524 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-24 20:28:08,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-24 20:28:08,535 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-24 20:28:08,537 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 2 states. [2018-01-24 20:28:08,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:28:08,560 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2018-01-24 20:28:08,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-24 20:28:08,561 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-01-24 20:28:08,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:28:08,568 INFO L225 Difference]: With dead ends: 109 [2018-01-24 20:28:08,568 INFO L226 Difference]: Without dead ends: 56 [2018-01-24 20:28:08,571 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-24 20:28:08,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-01-24 20:28:08,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-01-24 20:28:08,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-01-24 20:28:08,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2018-01-24 20:28:08,677 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 12 [2018-01-24 20:28:08,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:28:08,678 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2018-01-24 20:28:08,678 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-24 20:28:08,678 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2018-01-24 20:28:08,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-24 20:28:08,679 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:28:08,679 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:28:08,679 INFO L371 AbstractCegarLoop]: === Iteration 2 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation]=== [2018-01-24 20:28:08,679 INFO L82 PathProgramCache]: Analyzing trace with hash 91943959, now seen corresponding path program 1 times [2018-01-24 20:28:08,679 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:28:08,680 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:28:08,680 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:28:08,680 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:28:08,680 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:28:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:28:08,710 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:28:08,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:28:08,770 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:28:08,771 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:28:08,771 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:28:08,774 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:28:08,774 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:28:08,774 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:28:08,775 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 4 states. [2018-01-24 20:28:08,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:28:08,893 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2018-01-24 20:28:08,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:28:08,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-01-24 20:28:08,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:28:08,894 INFO L225 Difference]: With dead ends: 56 [2018-01-24 20:28:08,895 INFO L226 Difference]: Without dead ends: 55 [2018-01-24 20:28:08,896 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:28:08,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-01-24 20:28:08,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-01-24 20:28:08,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-01-24 20:28:08,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2018-01-24 20:28:08,903 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 14 [2018-01-24 20:28:08,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:28:08,904 INFO L432 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2018-01-24 20:28:08,904 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:28:08,904 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2018-01-24 20:28:08,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-24 20:28:08,905 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:28:08,905 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:28:08,905 INFO L371 AbstractCegarLoop]: === Iteration 3 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation]=== [2018-01-24 20:28:08,905 INFO L82 PathProgramCache]: Analyzing trace with hash 91943960, now seen corresponding path program 1 times [2018-01-24 20:28:08,905 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:28:08,907 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:28:08,907 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:28:08,907 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:28:08,907 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:28:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:28:08,921 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:28:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:28:09,010 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:28:09,011 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:28:09,011 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:28:09,011 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:28:09,011 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:28:09,012 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:28:09,012 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 5 states. [2018-01-24 20:28:09,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:28:09,111 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2018-01-24 20:28:09,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:28:09,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-01-24 20:28:09,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:28:09,112 INFO L225 Difference]: With dead ends: 55 [2018-01-24 20:28:09,112 INFO L226 Difference]: Without dead ends: 54 [2018-01-24 20:28:09,112 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:28:09,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-01-24 20:28:09,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-01-24 20:28:09,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-24 20:28:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2018-01-24 20:28:09,117 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 14 [2018-01-24 20:28:09,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:28:09,117 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2018-01-24 20:28:09,118 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:28:09,118 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2018-01-24 20:28:09,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 20:28:09,118 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:28:09,118 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] [2018-01-24 20:28:09,118 INFO L371 AbstractCegarLoop]: === Iteration 4 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation]=== [2018-01-24 20:28:09,119 INFO L82 PathProgramCache]: Analyzing trace with hash -255124515, now seen corresponding path program 1 times [2018-01-24 20:28:09,119 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:28:09,120 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:28:09,120 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:28:09,120 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:28:09,120 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:28:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:28:09,136 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:28:09,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:28:09,234 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:28:09,234 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:28:09,234 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:28:09,234 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 20:28:09,234 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 20:28:09,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:28:09,235 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 6 states. [2018-01-24 20:28:09,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:28:09,384 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2018-01-24 20:28:09,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:28:09,385 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-01-24 20:28:09,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:28:09,386 INFO L225 Difference]: With dead ends: 54 [2018-01-24 20:28:09,386 INFO L226 Difference]: Without dead ends: 51 [2018-01-24 20:28:09,387 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:28:09,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-01-24 20:28:09,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-01-24 20:28:09,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-01-24 20:28:09,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2018-01-24 20:28:09,394 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 20 [2018-01-24 20:28:09,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:28:09,394 INFO L432 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2018-01-24 20:28:09,394 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 20:28:09,394 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2018-01-24 20:28:09,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 20:28:09,395 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:28:09,395 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] [2018-01-24 20:28:09,395 INFO L371 AbstractCegarLoop]: === Iteration 5 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation]=== [2018-01-24 20:28:09,396 INFO L82 PathProgramCache]: Analyzing trace with hash -255124514, now seen corresponding path program 1 times [2018-01-24 20:28:09,396 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:28:09,397 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:28:09,397 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:28:09,397 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:28:09,397 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:28:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:28:09,416 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:28:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:28:09,567 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:28:09,567 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:28:09,567 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:28:09,567 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:28:09,568 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:28:09,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:28:09,568 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 7 states. [2018-01-24 20:28:09,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:28:09,716 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2018-01-24 20:28:09,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 20:28:09,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-01-24 20:28:09,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:28:09,720 INFO L225 Difference]: With dead ends: 91 [2018-01-24 20:28:09,720 INFO L226 Difference]: Without dead ends: 61 [2018-01-24 20:28:09,721 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:28:09,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-01-24 20:28:09,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2018-01-24 20:28:09,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-24 20:28:09,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2018-01-24 20:28:09,727 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 20 [2018-01-24 20:28:09,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:28:09,727 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2018-01-24 20:28:09,727 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:28:09,727 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2018-01-24 20:28:09,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-24 20:28:09,728 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:28:09,728 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:28:09,728 INFO L371 AbstractCegarLoop]: === Iteration 6 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation]=== [2018-01-24 20:28:09,728 INFO L82 PathProgramCache]: Analyzing trace with hash 468265909, now seen corresponding path program 1 times [2018-01-24 20:28:09,728 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:28:09,729 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:28:09,730 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:28:09,730 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:28:09,730 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:28:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:28:09,748 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:28:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:28:09,825 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:28:09,825 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 20:28:09,826 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-01-24 20:28:09,828 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [11], [12], [14], [16], [42], [46], [48], [51], [57], [58], [59], [60], [61], [64], [93], [94], [95], [97] [2018-01-24 20:28:09,878 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 20:28:09,878 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 20:28:29,721 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 20:28:29,722 INFO L268 AbstractInterpreter]: Visited 22 different actions 31 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 27 variables. [2018-01-24 20:28:29,733 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-24 20:28:29,734 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:28:29,734 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 20:28:29,740 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:28:29,741 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 20:28:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:28:29,789 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 20:28:29,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:28:29,831 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 20:28:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:28:29,881 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-01-24 20:28:29,882 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 11 [2018-01-24 20:28:29,882 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:28:29,882 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:28:29,882 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:28:29,882 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-01-24 20:28:29,883 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 5 states. [2018-01-24 20:28:29,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:28:29,960 INFO L93 Difference]: Finished difference Result 124 states and 132 transitions. [2018-01-24 20:28:29,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:28:29,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-01-24 20:28:29,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:28:29,962 INFO L225 Difference]: With dead ends: 124 [2018-01-24 20:28:29,963 INFO L226 Difference]: Without dead ends: 92 [2018-01-24 20:28:29,963 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-01-24 20:28:29,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-01-24 20:28:29,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 74. [2018-01-24 20:28:29,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-01-24 20:28:29,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2018-01-24 20:28:29,973 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 24 [2018-01-24 20:28:29,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:28:29,973 INFO L432 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2018-01-24 20:28:29,973 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:28:29,973 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2018-01-24 20:28:29,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-24 20:28:29,974 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:28:29,975 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:28:29,975 INFO L371 AbstractCegarLoop]: === Iteration 7 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation]=== [2018-01-24 20:28:29,975 INFO L82 PathProgramCache]: Analyzing trace with hash -504403376, now seen corresponding path program 1 times [2018-01-24 20:28:29,975 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:28:29,976 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:28:29,976 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:28:29,977 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:28:29,977 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:28:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:28:29,993 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:28:30,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:28:30,200 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:28:30,200 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 20:28:30,200 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 28 with the following transitions: [2018-01-24 20:28:30,201 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [11], [12], [14], [16], [42], [46], [48], [51], [53], [57], [58], [59], [60], [61], [64], [93], [94], [95], [97] [2018-01-24 20:28:30,202 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 20:28:30,202 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-24 20:28:57,658 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-24 20:28:57,659 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-24 20:28:57,659 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-24 20:28:57,660 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:28:57,660 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 20:28:57,667 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:28:57,667 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 20:28:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:28:57,699 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 20:28:57,700 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-24 20:28:57,701 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-24 20:28:57,705 WARN L187 ceAbstractionStarter]: Timeout [2018-01-24 20:28:57,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 08:28:57 BoogieIcfgContainer [2018-01-24 20:28:57,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 20:28:57,706 INFO L168 Benchmark]: Toolchain (without parser) took 49995.21 ms. Allocated memory was 305.7 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 264.0 MB in the beginning and 763.0 MB in the end (delta: -499.0 MB). Peak memory consumption was 973.7 MB. Max. memory is 5.3 GB. [2018-01-24 20:28:57,706 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 305.7 MB. Free memory is still 269.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 20:28:57,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 208.51 ms. Allocated memory is still 305.7 MB. Free memory was 263.0 MB in the beginning and 252.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-24 20:28:57,707 INFO L168 Benchmark]: Boogie Preprocessor took 33.64 ms. Allocated memory is still 305.7 MB. Free memory was 252.9 MB in the beginning and 250.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 20:28:57,707 INFO L168 Benchmark]: RCFGBuilder took 324.97 ms. Allocated memory is still 305.7 MB. Free memory was 250.9 MB in the beginning and 232.3 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 5.3 GB. [2018-01-24 20:28:57,708 INFO L168 Benchmark]: TraceAbstraction took 49419.47 ms. Allocated memory was 305.7 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 231.3 MB in the beginning and 763.0 MB in the end (delta: -531.7 MB). Peak memory consumption was 941.1 MB. Max. memory is 5.3 GB. [2018-01-24 20:28:57,709 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 305.7 MB. Free memory is still 269.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 208.51 ms. Allocated memory is still 305.7 MB. Free memory was 263.0 MB in the beginning and 252.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 33.64 ms. Allocated memory is still 305.7 MB. Free memory was 252.9 MB in the beginning and 250.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 324.97 ms. Allocated memory is still 305.7 MB. Free memory was 250.9 MB in the beginning and 232.3 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 49419.47 ms. Allocated memory was 305.7 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 231.3 MB in the beginning and 763.0 MB in the end (delta: -531.7 MB). Peak memory consumption was 941.1 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 21 LocStat_MAX_WEQGRAPH_SIZE : 4 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 303 LocStat_NO_SUPPORTING_DISEQUALITIES : 46 LocStat_NO_DISJUNCTIONS : -42 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 28 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 67 TransStat_NO_SUPPORTING_DISEQUALITIES : 4 TransStat_NO_DISJUNCTIONS : 30 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 1.674878 RENAME_VARIABLES(MILLISECONDS) : 0.440128 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.785240 PROJECTAWAY(MILLISECONDS) : 0.157085 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.048456 DISJOIN(MILLISECONDS) : 0.324366 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.465111 ADD_EQUALITY(MILLISECONDS) : 0.018535 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.011915 #CONJOIN_DISJUNCTIVE : 51 #RENAME_VARIABLES : 93 #UNFREEZE : 0 #CONJOIN : 111 #PROJECTAWAY : 79 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 8 #RENAME_VARIABLES_DISJUNCTIVE : 87 #ADD_EQUALITY : 69 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 2 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 626). Cancelled while BasicCegarLoop was analyzing trace of length 28 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 626). Cancelled while BasicCegarLoop was analyzing trace of length 28 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 628). Cancelled while BasicCegarLoop was analyzing trace of length 28 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 628). Cancelled while BasicCegarLoop was analyzing trace of length 28 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 640). Cancelled while BasicCegarLoop was analyzing trace of length 28 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that free always succeeds (line 643). Cancelled while BasicCegarLoop was analyzing trace of length 28 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 638). Cancelled while BasicCegarLoop was analyzing trace of length 28 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that free always succeeds (line 641). Cancelled while BasicCegarLoop was analyzing trace of length 28 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 638). Cancelled while BasicCegarLoop was analyzing trace of length 28 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 640). Cancelled while BasicCegarLoop was analyzing trace of length 28 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that free always succeeds (line 641). Cancelled while BasicCegarLoop was analyzing trace of length 28 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that free always succeeds (line 643). Cancelled while BasicCegarLoop was analyzing trace of length 28 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - TimeoutResultAtElement [Line: 630]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 630). Cancelled while BasicCegarLoop was analyzing trace of length 28 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that free always succeeds (line 641). Cancelled while BasicCegarLoop was analyzing trace of length 28 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that free always succeeds (line 643). Cancelled while BasicCegarLoop was analyzing trace of length 28 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 640). Cancelled while BasicCegarLoop was analyzing trace of length 28 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 640). Cancelled while BasicCegarLoop was analyzing trace of length 28 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that free always succeeds (line 643). Cancelled while BasicCegarLoop was analyzing trace of length 28 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that free always succeeds (line 641). Cancelled while BasicCegarLoop was analyzing trace of length 28 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 59 locations, 19 error locations. TIMEOUT Result, 49.3s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 260 SDtfs, 244 SDslu, 331 SDs, 0 SdLazy, 316 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 47.3s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 27 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 11561 SizeOfPredicates, 2 NumberOfNonLiveVariables, 132 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 7/9 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/960521-1_1_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_20-28-57-717.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/960521-1_1_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-VPDomainBenchmark-0-2018-01-24_20-28-57-717.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/960521-1_1_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_20-28-57-717.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/960521-1_1_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_20-28-57-717.csv Completed graceful shutdown