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_preciseopt.epf -i ../../../trunk/examples/svcomp/list-ext-properties/960521-1_1_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 03:17:13,447 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 03:17:13,450 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 03:17:13,479 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 03:17:13,480 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 03:17:13,481 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 03:17:13,483 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 03:17:13,495 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 03:17:13,498 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 03:17:13,499 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 03:17:13,500 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 03:17:13,501 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 03:17:13,502 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 03:17:13,505 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 03:17:13,506 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 03:17:13,517 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 03:17:13,521 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 03:17:13,523 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 03:17:13,524 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 03:17:13,532 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 03:17:13,534 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 03:17:13,535 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 03:17:13,539 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 03:17:13,545 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 03:17:13,546 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 03:17:13,548 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 03:17:13,552 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 03:17:13,553 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 03:17:13,553 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 03:17:13,553 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 03:17:13,554 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 03:17:13,556 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_preciseopt.epf [2018-01-25 03:17:13,570 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 03:17:13,570 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 03:17:13,571 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 03:17:13,571 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 03:17:13,571 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 03:17:13,572 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 03:17:13,572 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 03:17:13,572 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 03:17:13,572 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 03:17:13,573 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 03:17:13,573 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 03:17:13,573 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 03:17:13,573 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 03:17:13,573 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 03:17:13,574 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 03:17:13,574 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 03:17:13,574 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 03:17:13,575 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 03:17:13,575 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 03:17:13,575 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 03:17:13,575 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 03:17:13,575 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 03:17:13,576 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 03:17:13,576 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 03:17:13,576 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 03:17:13,576 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:17:13,576 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 03:17:13,576 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 03:17:13,577 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 03:17:13,577 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 03:17:13,577 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 03:17:13,577 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 03:17:13,577 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 03:17:13,577 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 03:17:13,578 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 03:17:13,581 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 03:17:13,581 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 03:17:13,636 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 03:17:13,650 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 03:17:13,656 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 03:17:13,658 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 03:17:13,659 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 03:17:13,660 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/960521-1_1_true-valid-memsafety.i [2018-01-25 03:17:13,957 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 03:17:13,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 03:17:13,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 03:17:13,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 03:17:13,969 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 03:17:13,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:17:13" (1/1) ... [2018-01-25 03:17:13,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cccfa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:17:13, skipping insertion in model container [2018-01-25 03:17:13,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:17:13" (1/1) ... [2018-01-25 03:17:13,987 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:17:14,027 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:17:14,144 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:17:14,162 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:17:14,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:17:14 WrapperNode [2018-01-25 03:17:14,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 03:17:14,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 03:17:14,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 03:17:14,172 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 03:17:14,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:17:14" (1/1) ... [2018-01-25 03:17:14,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:17:14" (1/1) ... [2018-01-25 03:17:14,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:17:14" (1/1) ... [2018-01-25 03:17:14,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:17:14" (1/1) ... [2018-01-25 03:17:14,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:17:14" (1/1) ... [2018-01-25 03:17:14,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:17:14" (1/1) ... [2018-01-25 03:17:14,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:17:14" (1/1) ... [2018-01-25 03:17:14,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 03:17:14,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 03:17:14,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 03:17:14,206 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 03:17:14,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:17:14" (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 [2018-01-25 03:17:14,268 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 03:17:14,268 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 03:17:14,269 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-01-25 03:17:14,269 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 03:17:14,270 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 03:17:14,270 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 03:17:14,270 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 03:17:14,270 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 03:17:14,270 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 03:17:14,270 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 03:17:14,271 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 03:17:14,271 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 03:17:14,271 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-01-25 03:17:14,271 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 03:17:14,271 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 03:17:14,271 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 03:17:14,538 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 03:17:14,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:17:14 BoogieIcfgContainer [2018-01-25 03:17:14,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 03:17:14,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 03:17:14,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 03:17:14,541 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 03:17:14,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 03:17:13" (1/3) ... [2018-01-25 03:17:14,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bdeed8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:17:14, skipping insertion in model container [2018-01-25 03:17:14,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:17:14" (2/3) ... [2018-01-25 03:17:14,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bdeed8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:17:14, skipping insertion in model container [2018-01-25 03:17:14,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:17:14" (3/3) ... [2018-01-25 03:17:14,546 INFO L105 eAbstractionObserver]: Analyzing ICFG 960521-1_1_true-valid-memsafety.i [2018-01-25 03:17:14,552 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 03:17:14,558 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2018-01-25 03:17:14,610 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 03:17:14,610 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 03:17:14,610 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 03:17:14,610 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 03:17:14,610 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 03:17:14,610 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 03:17:14,611 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 03:17:14,611 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 03:17:14,612 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 03:17:14,639 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2018-01-25 03:17:14,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-25 03:17:14,647 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:17:14,648 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:17:14,648 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation]=== [2018-01-25 03:17:14,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1159416495, now seen corresponding path program 1 times [2018-01-25 03:17:14,660 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:17:14,721 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:17:14,722 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:17:14,722 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:17:14,722 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:17:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:17:14,793 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:17:14,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:17:14,841 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:17:14,841 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-25 03:17:14,841 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:17:14,844 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-25 03:17:14,859 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-25 03:17:14,860 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-25 03:17:14,863 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 2 states. [2018-01-25 03:17:14,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:17:14,895 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2018-01-25 03:17:14,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-25 03:17:14,897 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-01-25 03:17:14,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:17:14,908 INFO L225 Difference]: With dead ends: 109 [2018-01-25 03:17:14,908 INFO L226 Difference]: Without dead ends: 56 [2018-01-25 03:17:14,913 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 [2018-01-25 03:17:15,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-01-25 03:17:15,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-01-25 03:17:15,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-01-25 03:17:15,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2018-01-25 03:17:15,060 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 12 [2018-01-25 03:17:15,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:17:15,061 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2018-01-25 03:17:15,061 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-25 03:17:15,061 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2018-01-25 03:17:15,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-25 03:17:15,062 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:17:15,062 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:17:15,062 INFO L371 AbstractCegarLoop]: === Iteration 2 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation]=== [2018-01-25 03:17:15,062 INFO L82 PathProgramCache]: Analyzing trace with hash 91943959, now seen corresponding path program 1 times [2018-01-25 03:17:15,062 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:17:15,064 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:17:15,064 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:17:15,064 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:17:15,064 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:17:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:17:15,105 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:17:15,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:17:15,230 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:17:15,230 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:17:15,230 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:17:15,232 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:17:15,232 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:17:15,232 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:17:15,233 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 4 states. [2018-01-25 03:17:15,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:17:15,495 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2018-01-25 03:17:15,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:17:15,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-01-25 03:17:15,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:17:15,497 INFO L225 Difference]: With dead ends: 56 [2018-01-25 03:17:15,497 INFO L226 Difference]: Without dead ends: 55 [2018-01-25 03:17:15,498 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:17:15,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-01-25 03:17:15,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-01-25 03:17:15,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-01-25 03:17:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2018-01-25 03:17:15,508 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 14 [2018-01-25 03:17:15,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:17:15,509 INFO L432 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2018-01-25 03:17:15,509 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:17:15,509 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2018-01-25 03:17:15,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-25 03:17:15,509 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:17:15,509 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:17:15,510 INFO L371 AbstractCegarLoop]: === Iteration 3 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation]=== [2018-01-25 03:17:15,510 INFO L82 PathProgramCache]: Analyzing trace with hash 91943960, now seen corresponding path program 1 times [2018-01-25 03:17:15,510 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:17:15,511 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:17:15,511 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:17:15,512 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:17:15,512 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:17:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:17:15,533 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:17:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:17:15,725 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:17:15,725 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:17:15,725 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:17:15,725 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:17:15,726 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:17:15,726 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:17:15,726 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 5 states. [2018-01-25 03:17:15,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:17:15,899 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2018-01-25 03:17:15,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:17:15,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-01-25 03:17:15,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:17:15,900 INFO L225 Difference]: With dead ends: 55 [2018-01-25 03:17:15,900 INFO L226 Difference]: Without dead ends: 54 [2018-01-25 03:17:15,901 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:17:15,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-01-25 03:17:15,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-01-25 03:17:15,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-25 03:17:15,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2018-01-25 03:17:15,906 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 14 [2018-01-25 03:17:15,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:17:15,906 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2018-01-25 03:17:15,906 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:17:15,906 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2018-01-25 03:17:15,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-25 03:17:15,907 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:17:15,907 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] [2018-01-25 03:17:15,907 INFO L371 AbstractCegarLoop]: === Iteration 4 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation]=== [2018-01-25 03:17:15,907 INFO L82 PathProgramCache]: Analyzing trace with hash -255124515, now seen corresponding path program 1 times [2018-01-25 03:17:15,908 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:17:15,909 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:17:15,909 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:17:15,909 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:17:15,909 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:17:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:17:15,930 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:17:16,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:17:16,010 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:17:16,011 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:17:16,011 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:17:16,011 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 03:17:16,012 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 03:17:16,012 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:17:16,012 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 6 states. [2018-01-25 03:17:16,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:17:16,140 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2018-01-25 03:17:16,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:17:16,141 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-01-25 03:17:16,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:17:16,143 INFO L225 Difference]: With dead ends: 54 [2018-01-25 03:17:16,143 INFO L226 Difference]: Without dead ends: 51 [2018-01-25 03:17:16,143 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 [2018-01-25 03:17:16,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-01-25 03:17:16,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-01-25 03:17:16,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-01-25 03:17:16,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2018-01-25 03:17:16,151 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 20 [2018-01-25 03:17:16,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:17:16,151 INFO L432 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2018-01-25 03:17:16,151 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 03:17:16,152 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2018-01-25 03:17:16,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-25 03:17:16,152 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:17:16,153 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] [2018-01-25 03:17:16,153 INFO L371 AbstractCegarLoop]: === Iteration 5 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation]=== [2018-01-25 03:17:16,153 INFO L82 PathProgramCache]: Analyzing trace with hash -255124514, now seen corresponding path program 1 times [2018-01-25 03:17:16,153 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:17:16,154 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:17:16,154 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:17:16,154 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:17:16,154 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:17:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:17:16,176 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:17:16,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:17:16,317 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:17:16,318 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 03:17:16,318 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:17:16,318 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 03:17:16,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 03:17:16,319 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:17:16,319 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 7 states. [2018-01-25 03:17:16,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:17:16,601 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2018-01-25 03:17:16,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 03:17:16,603 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-01-25 03:17:16,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:17:16,607 INFO L225 Difference]: With dead ends: 91 [2018-01-25 03:17:16,607 INFO L226 Difference]: Without dead ends: 61 [2018-01-25 03:17:16,608 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 [2018-01-25 03:17:16,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-01-25 03:17:16,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2018-01-25 03:17:16,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-25 03:17:16,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2018-01-25 03:17:16,616 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 20 [2018-01-25 03:17:16,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:17:16,617 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2018-01-25 03:17:16,617 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 03:17:16,617 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2018-01-25 03:17:16,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-25 03:17:16,618 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:17:16,618 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] [2018-01-25 03:17:16,618 INFO L371 AbstractCegarLoop]: === Iteration 6 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation]=== [2018-01-25 03:17:16,618 INFO L82 PathProgramCache]: Analyzing trace with hash 468265909, now seen corresponding path program 1 times [2018-01-25 03:17:16,619 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:17:16,620 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:17:16,620 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:17:16,620 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:17:16,620 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:17:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:17:16,636 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:17:16,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:17:16,706 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:17:16,707 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 03:17:16,708 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-01-25 03:17:16,709 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] [2018-01-25 03:17:16,758 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:17:16,758 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 03:17:39,585 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-25 03:17:39,586 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. [2018-01-25 03:17:39,604 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-25 03:17:39,604 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:17:39,604 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 [2018-01-25 03:17:39,611 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:17:39,611 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-25 03:17:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:17:39,648 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-25 03:17:39,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:17:39,690 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-25 03:17:39,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:17:39,741 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-01-25 03:17:39,741 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 11 [2018-01-25 03:17:39,741 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:17:39,741 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:17:39,742 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:17:39,742 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-01-25 03:17:39,742 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 5 states. [2018-01-25 03:17:39,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:17:39,875 INFO L93 Difference]: Finished difference Result 124 states and 132 transitions. [2018-01-25 03:17:39,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:17:39,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-01-25 03:17:39,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:17:39,877 INFO L225 Difference]: With dead ends: 124 [2018-01-25 03:17:39,877 INFO L226 Difference]: Without dead ends: 92 [2018-01-25 03:17:39,877 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 [2018-01-25 03:17:39,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-01-25 03:17:39,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 74. [2018-01-25 03:17:39,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-01-25 03:17:39,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2018-01-25 03:17:39,886 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 24 [2018-01-25 03:17:39,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:17:39,887 INFO L432 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2018-01-25 03:17:39,887 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:17:39,887 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2018-01-25 03:17:39,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-25 03:17:39,891 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:17:39,892 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] [2018-01-25 03:17:39,892 INFO L371 AbstractCegarLoop]: === Iteration 7 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation]=== [2018-01-25 03:17:39,892 INFO L82 PathProgramCache]: Analyzing trace with hash -504403376, now seen corresponding path program 1 times [2018-01-25 03:17:39,892 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:17:39,893 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:17:39,893 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:17:39,893 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:17:39,893 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:17:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:17:39,910 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:17:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:17:40,199 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:17:40,199 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 03:17:40,199 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 28 with the following transitions: [2018-01-25 03:17:40,199 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] [2018-01-25 03:17:40,201 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:17:40,201 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-25 03:18:10,078 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-25 03:18:10,079 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-25 03:18:10,079 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-25 03:18:10,080 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:18:10,080 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 [2018-01-25 03:18:10,092 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:18:10,092 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-25 03:18:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:18:10,139 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-25 03:18:10,143 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-25 03:18:10,143 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-25 03:18:10,150 WARN L187 ceAbstractionStarter]: Timeout [2018-01-25 03:18:10,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.01 03:18:10 BoogieIcfgContainer [2018-01-25 03:18:10,150 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-25 03:18:10,156 INFO L168 Benchmark]: Toolchain (without parser) took 56197.99 ms. Allocated memory was 300.9 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 259.2 MB in the beginning and 460.1 MB in the end (delta: -200.8 MB). Peak memory consumption was 1.0 GB. Max. memory is 5.3 GB. [2018-01-25 03:18:10,157 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 300.9 MB. Free memory is still 265.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-25 03:18:10,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.66 ms. Allocated memory is still 300.9 MB. Free memory was 258.3 MB in the beginning and 248.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-25 03:18:10,158 INFO L168 Benchmark]: Boogie Preprocessor took 34.07 ms. Allocated memory is still 300.9 MB. Free memory was 248.2 MB in the beginning and 246.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-25 03:18:10,158 INFO L168 Benchmark]: RCFGBuilder took 332.94 ms. Allocated memory is still 300.9 MB. Free memory was 246.2 MB in the beginning and 227.6 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 5.3 GB. [2018-01-25 03:18:10,158 INFO L168 Benchmark]: TraceAbstraction took 55611.09 ms. Allocated memory was 300.9 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 226.6 MB in the beginning and 460.1 MB in the end (delta: -233.5 MB). Peak memory consumption was 1.0 GB. Max. memory is 5.3 GB. [2018-01-25 03:18:10,160 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 300.9 MB. Free memory is still 265.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 207.66 ms. Allocated memory is still 300.9 MB. Free memory was 258.3 MB in the beginning and 248.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 34.07 ms. Allocated memory is still 300.9 MB. Free memory was 248.2 MB in the beginning and 246.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 332.94 ms. Allocated memory is still 300.9 MB. Free memory was 246.2 MB in the beginning and 227.6 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 55611.09 ms. Allocated memory was 300.9 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 226.6 MB in the beginning and 460.1 MB in the end (delta: -233.5 MB). Peak memory consumption was 1.0 GB. 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) : 1.876552 RENAME_VARIABLES(MILLISECONDS) : 0.468827 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.891209 PROJECTAWAY(MILLISECONDS) : 0.148648 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.053897 DISJOIN(MILLISECONDS) : 0.494493 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.495387 ADD_EQUALITY(MILLISECONDS) : 0.033794 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.019958 #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, 55.5s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 260 SDtfs, 244 SDslu, 331 SDs, 0 SdLazy, 316 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s 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, 52.7s 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, 0.7s 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_preciseopt.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-25_03-18-10-190.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_preciseopt.epf_AutomizerC.xml/Csv-VPDomainBenchmark-0-2018-01-25_03-18-10-190.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_preciseopt.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-0-2018-01-25_03-18-10-190.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_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-25_03-18-10-190.csv Completed graceful shutdown