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_RubberTaipan+AI_EQ.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 13:20:20,370 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 13:20:20,372 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 13:20:20,384 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 13:20:20,384 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 13:20:20,385 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 13:20:20,386 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 13:20:20,388 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 13:20:20,390 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 13:20:20,391 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 13:20:20,392 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 13:20:20,392 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 13:20:20,393 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 13:20:20,395 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 13:20:20,396 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 13:20:20,398 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 13:20:20,400 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 13:20:20,402 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 13:20:20,403 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 13:20:20,404 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 13:20:20,407 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 13:20:20,407 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 13:20:20,407 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 13:20:20,408 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 13:20:20,409 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 13:20:20,410 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 13:20:20,410 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 13:20:20,411 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 13:20:20,411 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 13:20:20,411 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 13:20:20,412 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 13:20:20,412 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_RubberTaipan+AI_EQ.epf [2018-01-24 13:20:20,422 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 13:20:20,422 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 13:20:20,423 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 13:20:20,423 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 13:20:20,423 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 13:20:20,424 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 13:20:20,424 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 13:20:20,424 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 13:20:20,424 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 13:20:20,425 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 13:20:20,425 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 13:20:20,425 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 13:20:20,425 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 13:20:20,425 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 13:20:20,426 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 13:20:20,426 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 13:20:20,426 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 13:20:20,426 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 13:20:20,426 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 13:20:20,426 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 13:20:20,427 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 13:20:20,427 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 13:20:20,427 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 13:20:20,427 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 13:20:20,427 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 13:20:20,428 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 13:20:20,428 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 13:20:20,428 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 13:20:20,428 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-01-24 13:20:20,428 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 13:20:20,428 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 13:20:20,429 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 13:20:20,429 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 13:20:20,430 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 13:20:20,462 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 13:20:20,472 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 13:20:20,475 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 13:20:20,476 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 13:20:20,476 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 13:20:20,477 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-01-24 13:20:20,592 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 13:20:20,597 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 13:20:20,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 13:20:20,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 13:20:20,603 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 13:20:20,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 01:20:20" (1/1) ... [2018-01-24 13:20:20,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669a2021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:20:20, skipping insertion in model container [2018-01-24 13:20:20,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 01:20:20" (1/1) ... [2018-01-24 13:20:20,620 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 13:20:20,635 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 13:20:20,732 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 13:20:20,747 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 13:20:20,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:20:20 WrapperNode [2018-01-24 13:20:20,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 13:20:20,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 13:20:20,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 13:20:20,756 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 13:20:20,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:20:20" (1/1) ... [2018-01-24 13:20:20,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:20:20" (1/1) ... [2018-01-24 13:20:20,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:20:20" (1/1) ... [2018-01-24 13:20:20,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:20:20" (1/1) ... [2018-01-24 13:20:20,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:20:20" (1/1) ... [2018-01-24 13:20:20,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:20:20" (1/1) ... [2018-01-24 13:20:20,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:20:20" (1/1) ... [2018-01-24 13:20:20,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 13:20:20,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 13:20:20,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 13:20:20,789 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 13:20:20,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:20:20" (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 13:20:20,833 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 13:20:20,833 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 13:20:20,833 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-01-24 13:20:20,833 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 13:20:20,833 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 13:20:20,834 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 13:20:20,834 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 13:20:20,834 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 13:20:20,834 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 13:20:20,834 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-01-24 13:20:20,834 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 13:20:20,834 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 13:20:20,834 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 13:20:20,996 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 13:20:20,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 01:20:20 BoogieIcfgContainer [2018-01-24 13:20:20,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 13:20:20,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 13:20:20,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 13:20:20,998 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 13:20:20,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 01:20:20" (1/3) ... [2018-01-24 13:20:20,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13679a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 01:20:20, skipping insertion in model container [2018-01-24 13:20:21,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:20:20" (2/3) ... [2018-01-24 13:20:21,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13679a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 01:20:21, skipping insertion in model container [2018-01-24 13:20:21,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 01:20:20" (3/3) ... [2018-01-24 13:20:21,002 INFO L105 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-01-24 13:20:21,012 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 13:20:21,020 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-01-24 13:20:21,065 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 13:20:21,065 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 13:20:21,065 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 13:20:21,066 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 13:20:21,066 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 13:20:21,066 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 13:20:21,066 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 13:20:21,066 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 13:20:21,067 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 13:20:21,083 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-01-24 13:20:21,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-01-24 13:20:21,087 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:20:21,088 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:20:21,088 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 13:20:21,093 INFO L82 PathProgramCache]: Analyzing trace with hash -215054890, now seen corresponding path program 1 times [2018-01-24 13:20:21,095 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:20:21,140 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:20:21,140 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:20:21,140 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:20:21,140 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:20:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:20:21,182 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:20:21,261 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 13:20:21,264 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 13:20:21,264 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 13:20:21,264 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:20:21,267 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 13:20:21,281 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 13:20:21,281 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 13:20:21,284 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2018-01-24 13:20:21,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:20:21,368 INFO L93 Difference]: Finished difference Result 101 states and 123 transitions. [2018-01-24 13:20:21,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 13:20:21,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-01-24 13:20:21,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:20:21,380 INFO L225 Difference]: With dead ends: 101 [2018-01-24 13:20:21,380 INFO L226 Difference]: Without dead ends: 59 [2018-01-24 13:20:21,384 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 13:20:21,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-01-24 13:20:21,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2018-01-24 13:20:21,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-01-24 13:20:21,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2018-01-24 13:20:21,480 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 11 [2018-01-24 13:20:21,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:20:21,480 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2018-01-24 13:20:21,480 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 13:20:21,480 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2018-01-24 13:20:21,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 13:20:21,481 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:20:21,481 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:20:21,481 INFO L371 AbstractCegarLoop]: === Iteration 2 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 13:20:21,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1100032001, now seen corresponding path program 1 times [2018-01-24 13:20:21,481 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:20:21,482 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:20:21,482 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:20:21,483 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:20:21,483 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:20:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:20:21,500 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:20:21,591 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 13:20:21,592 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 13:20:21,592 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 13:20:21,592 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:20:21,594 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 13:20:21,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 13:20:21,594 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-24 13:20:21,595 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 5 states. [2018-01-24 13:20:21,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:20:21,695 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2018-01-24 13:20:21,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 13:20:21,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-01-24 13:20:21,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:20:21,697 INFO L225 Difference]: With dead ends: 95 [2018-01-24 13:20:21,697 INFO L226 Difference]: Without dead ends: 57 [2018-01-24 13:20:21,699 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-01-24 13:20:21,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-01-24 13:20:21,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2018-01-24 13:20:21,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-24 13:20:21,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2018-01-24 13:20:21,706 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 16 [2018-01-24 13:20:21,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:20:21,706 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2018-01-24 13:20:21,706 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 13:20:21,707 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2018-01-24 13:20:21,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 13:20:21,707 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:20:21,708 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:20:21,708 INFO L371 AbstractCegarLoop]: === Iteration 3 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 13:20:21,708 INFO L82 PathProgramCache]: Analyzing trace with hash -258746290, now seen corresponding path program 1 times [2018-01-24 13:20:21,708 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:20:21,709 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:20:21,709 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:20:21,709 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:20:21,710 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:20:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:20:21,724 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:20:21,819 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 13:20:21,819 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 13:20:21,819 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 13:20:21,819 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:20:21,820 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 13:20:21,820 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 13:20:21,820 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 13:20:21,821 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 5 states. [2018-01-24 13:20:21,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:20:21,905 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2018-01-24 13:20:21,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 13:20:21,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-24 13:20:21,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:20:21,906 INFO L225 Difference]: With dead ends: 57 [2018-01-24 13:20:21,906 INFO L226 Difference]: Without dead ends: 56 [2018-01-24 13:20:21,906 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-24 13:20:21,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-01-24 13:20:21,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2018-01-24 13:20:21,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-01-24 13:20:21,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2018-01-24 13:20:21,912 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 17 [2018-01-24 13:20:21,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:20:21,912 INFO L432 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2018-01-24 13:20:21,912 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 13:20:21,912 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2018-01-24 13:20:21,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 13:20:21,913 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:20:21,913 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:20:21,913 INFO L371 AbstractCegarLoop]: === Iteration 4 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 13:20:21,913 INFO L82 PathProgramCache]: Analyzing trace with hash -258746291, now seen corresponding path program 1 times [2018-01-24 13:20:21,913 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:20:21,914 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:20:21,914 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:20:21,915 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:20:21,915 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:20:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:20:21,922 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:20:21,958 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 13:20:21,958 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 13:20:21,958 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 13:20:21,958 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:20:21,958 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 13:20:21,959 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 13:20:21,959 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 13:20:21,959 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 5 states. [2018-01-24 13:20:22,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:20:22,064 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2018-01-24 13:20:22,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 13:20:22,064 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-24 13:20:22,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:20:22,065 INFO L225 Difference]: With dead ends: 53 [2018-01-24 13:20:22,065 INFO L226 Difference]: Without dead ends: 52 [2018-01-24 13:20:22,066 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-24 13:20:22,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-01-24 13:20:22,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-01-24 13:20:22,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-24 13:20:22,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2018-01-24 13:20:22,073 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 17 [2018-01-24 13:20:22,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:20:22,074 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2018-01-24 13:20:22,074 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 13:20:22,074 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2018-01-24 13:20:22,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 13:20:22,075 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:20:22,075 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] [2018-01-24 13:20:22,075 INFO L371 AbstractCegarLoop]: === Iteration 5 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 13:20:22,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1933852231, now seen corresponding path program 1 times [2018-01-24 13:20:22,076 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:20:22,077 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:20:22,077 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:20:22,077 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:20:22,077 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:20:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:20:22,090 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:20:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:20:22,157 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 13:20:22,158 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 13:20:22,165 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:20:22,165 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 13:20:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:20:22,186 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 13:20:22,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:20:22,250 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 13:20:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:20:22,323 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 13:20:22,324 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 3 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-24 13:20:22,328 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:20:22,328 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 13:20:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:20:22,352 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 13:20:22,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:20:22,356 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 13:20:22,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:20:22,376 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-24 13:20:22,376 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3, 3, 3, 3] total 11 [2018-01-24 13:20:22,376 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-24 13:20:22,377 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 13:20:22,377 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 13:20:22,377 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-01-24 13:20:22,377 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 10 states. [2018-01-24 13:20:22,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:20:22,539 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2018-01-24 13:20:22,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 13:20:22,578 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-01-24 13:20:22,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:20:22,578 INFO L225 Difference]: With dead ends: 103 [2018-01-24 13:20:22,579 INFO L226 Difference]: Without dead ends: 62 [2018-01-24 13:20:22,579 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2018-01-24 13:20:22,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-01-24 13:20:22,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2018-01-24 13:20:22,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-01-24 13:20:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2018-01-24 13:20:22,588 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 22 [2018-01-24 13:20:22,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:20:22,588 INFO L432 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2018-01-24 13:20:22,588 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 13:20:22,588 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2018-01-24 13:20:22,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 13:20:22,589 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:20:22,589 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:20:22,590 INFO L371 AbstractCegarLoop]: === Iteration 6 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 13:20:22,590 INFO L82 PathProgramCache]: Analyzing trace with hash 180123030, now seen corresponding path program 1 times [2018-01-24 13:20:22,590 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:20:22,591 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:20:22,591 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:20:22,591 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:20:22,591 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:20:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:20:22,602 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:20:22,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:20:22,788 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 13:20:22,788 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 13:20:22,792 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:20:22,793 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 13:20:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:20:22,809 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 13:20:22,832 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 13:20:22,834 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 13:20:22,837 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 13:20:22,837 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 13:20:22,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:20:22,897 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 13:20:22,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:20:22,986 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 13:20:22,986 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-24 13:20:22,993 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:20:22,994 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 13:20:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:20:23,017 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 13:20:23,021 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 13:20:23,022 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 13:20:23,029 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 13:20:23,029 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 13:20:23,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:20:23,035 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 13:20:23,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:20:23,053 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-24 13:20:23,054 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 14 [2018-01-24 13:20:23,054 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-24 13:20:23,054 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-24 13:20:23,055 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-24 13:20:23,055 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2018-01-24 13:20:23,055 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 11 states. [2018-01-24 13:20:23,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:20:23,227 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2018-01-24 13:20:23,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 13:20:23,227 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2018-01-24 13:20:23,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:20:23,228 INFO L225 Difference]: With dead ends: 61 [2018-01-24 13:20:23,229 INFO L226 Difference]: Without dead ends: 60 [2018-01-24 13:20:23,229 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2018-01-24 13:20:23,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-24 13:20:23,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-01-24 13:20:23,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-01-24 13:20:23,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2018-01-24 13:20:23,236 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 23 [2018-01-24 13:20:23,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:20:23,237 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2018-01-24 13:20:23,237 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-24 13:20:23,237 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2018-01-24 13:20:23,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-24 13:20:23,239 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:20:23,239 INFO L322 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:20:23,239 INFO L371 AbstractCegarLoop]: === Iteration 7 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 13:20:23,239 INFO L82 PathProgramCache]: Analyzing trace with hash 687601263, now seen corresponding path program 1 times [2018-01-24 13:20:23,239 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:20:23,240 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:20:23,240 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:20:23,240 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:20:23,240 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:20:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:20:23,256 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:20:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:20:23,463 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 13:20:23,463 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 13:20:23,471 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:20:23,471 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 13:20:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:20:23,490 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 13:20:23,533 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:20:23,533 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 13:20:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:20:23,648 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 13:20:23,649 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 7 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-24 13:20:23,652 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:20:23,653 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 13:20:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:20:23,683 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 13:20:23,713 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-01-24 13:20:23,713 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 13:20:23,742 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-01-24 13:20:23,744 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-01-24 13:20:23,744 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7, 7, 7] total 22 [2018-01-24 13:20:23,744 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:20:23,744 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 13:20:23,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 13:20:23,745 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2018-01-24 13:20:23,745 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 5 states. [2018-01-24 13:20:23,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:20:23,774 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2018-01-24 13:20:23,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 13:20:23,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2018-01-24 13:20:23,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:20:23,775 INFO L225 Difference]: With dead ends: 72 [2018-01-24 13:20:23,775 INFO L226 Difference]: Without dead ends: 70 [2018-01-24 13:20:23,775 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 147 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2018-01-24 13:20:23,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-01-24 13:20:23,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 56. [2018-01-24 13:20:23,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-01-24 13:20:23,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2018-01-24 13:20:23,782 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 41 [2018-01-24 13:20:23,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:20:23,783 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2018-01-24 13:20:23,783 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 13:20:23,783 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2018-01-24 13:20:23,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-01-24 13:20:23,784 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:20:23,785 INFO L322 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:20:23,785 INFO L371 AbstractCegarLoop]: === Iteration 8 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 13:20:23,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1072164206, now seen corresponding path program 1 times [2018-01-24 13:20:23,785 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:20:23,786 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:20:23,786 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:20:23,786 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:20:23,786 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:20:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:20:23,799 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:20:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:20:23,924 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 13:20:23,924 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 13:20:23,931 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:20:23,932 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 13:20:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:20:23,952 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 13:20:23,998 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:20:23,998 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 13:20:24,085 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:20:24,105 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 13:20:24,105 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 9 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-24 13:20:24,111 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:20:24,111 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 13:20:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:20:24,140 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 13:20:24,184 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-01-24 13:20:24,184 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 13:20:24,226 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-01-24 13:20:24,228 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-24 13:20:24,228 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 4, 4] total 21 [2018-01-24 13:20:24,228 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-24 13:20:24,229 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-24 13:20:24,229 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-24 13:20:24,230 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2018-01-24 13:20:24,230 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 12 states. [2018-01-24 13:20:24,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:20:24,423 INFO L93 Difference]: Finished difference Result 115 states and 122 transitions. [2018-01-24 13:20:24,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 13:20:24,423 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2018-01-24 13:20:24,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:20:24,424 INFO L225 Difference]: With dead ends: 115 [2018-01-24 13:20:24,425 INFO L226 Difference]: Without dead ends: 66 [2018-01-24 13:20:24,426 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2018-01-24 13:20:24,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-01-24 13:20:24,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2018-01-24 13:20:24,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-01-24 13:20:24,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2018-01-24 13:20:24,433 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 49 [2018-01-24 13:20:24,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:20:24,434 INFO L432 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2018-01-24 13:20:24,434 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-24 13:20:24,434 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2018-01-24 13:20:24,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-01-24 13:20:24,436 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:20:24,436 INFO L322 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:20:24,436 INFO L371 AbstractCegarLoop]: === Iteration 9 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 13:20:24,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1829333686, now seen corresponding path program 2 times [2018-01-24 13:20:24,436 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:20:24,437 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:20:24,437 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:20:24,438 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:20:24,438 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:20:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:20:24,450 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:20:24,653 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:20:24,653 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 13:20:24,653 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 13:20:24,662 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 13:20:24,662 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-01-24 13:20:24,673 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 13:20:24,674 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 13:20:24,676 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 13:20:24,694 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 13:20:24,697 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-01-24 13:20:24,697 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 13:20:24,699 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-24 13:20:24,699 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-01-24 13:20:24,751 WARN L1029 $PredicateComparison]: unable to prove that (exists ((|main_~#mask~3.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |main_~#mask~3.base| 0)) (= 0 (select |c_old(#valid)| |main_~#mask~3.base|)))) is different from true [2018-01-24 13:20:24,760 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-01-24 13:20:24,761 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 13:20:24,823 WARN L1007 $PredicateComparison]: unable to prove that (forall ((|v_main_~#mask~3.base_13| Int)) (or (not (= (select |c_#valid| |v_main_~#mask~3.base_13|) 0)) (= (store |c_#valid| |v_main_~#mask~3.base_13| 0) |c_old(#valid)|))) is different from false [2018-01-24 13:20:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-01-24 13:20:24,863 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-01-24 13:20:24,863 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [8] total 14 [2018-01-24 13:20:24,863 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:20:24,864 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 13:20:24,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 13:20:24,864 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=101, Unknown=2, NotChecked=42, Total=182 [2018-01-24 13:20:24,864 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 6 states. [2018-01-24 13:20:24,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:20:24,995 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2018-01-24 13:20:24,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 13:20:24,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2018-01-24 13:20:24,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:20:24,996 INFO L225 Difference]: With dead ends: 63 [2018-01-24 13:20:24,996 INFO L226 Difference]: Without dead ends: 0 [2018-01-24 13:20:24,997 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=144, Unknown=2, NotChecked=50, Total=240 [2018-01-24 13:20:24,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-24 13:20:24,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-24 13:20:24,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-24 13:20:24,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-24 13:20:24,998 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2018-01-24 13:20:24,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:20:24,998 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-24 13:20:24,998 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 13:20:24,998 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-24 13:20:24,998 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-24 13:20:25,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-24 13:20:25,422 WARN L146 SmtUtils]: Spent 226ms on a formula simplification. DAG size of input: 50 DAG size of output 34 [2018-01-24 13:20:25,522 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 34) no Hoare annotation was computed. [2018-01-24 13:20:25,522 INFO L397 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 34) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-24 13:20:25,522 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 34) no Hoare annotation was computed. [2018-01-24 13:20:25,522 INFO L401 ceAbstractionStarter]: For program point fooFINAL(lines 12 19) no Hoare annotation was computed. [2018-01-24 13:20:25,522 INFO L401 ceAbstractionStarter]: For program point L15''''(lines 15 17) no Hoare annotation was computed. [2018-01-24 13:20:25,522 INFO L401 ceAbstractionStarter]: For program point fooEXIT(lines 12 19) no Hoare annotation was computed. [2018-01-24 13:20:25,522 INFO L404 ceAbstractionStarter]: At program point fooENTRY(lines 12 19) the Hoare annotation is: true [2018-01-24 13:20:25,522 INFO L401 ceAbstractionStarter]: For program point fooErr2RequiresViolation(lines 1 34) no Hoare annotation was computed. [2018-01-24 13:20:25,523 INFO L397 ceAbstractionStarter]: At program point L15'''(lines 15 17) the Hoare annotation is: (let ((.cse2 (= foo_~size 32)) (.cse1 (select |#length| foo_~b.base)) (.cse0 (= 1 (select |#valid| foo_~b.base))) (.cse3 (= foo_~b.offset 0))) (or (and .cse0 (= .cse1 32) .cse2 .cse3 (<= 1 foo_~i~1)) (not (= 0 |foo_#in~b.offset|)) (not (= (select |#valid| |foo_#in~b.base|) 1)) (not (= 32 |foo_#in~size|)) (not (= 32 (select |#length| |foo_#in~b.base|))) (and .cse2 (= 32 .cse1) .cse0 .cse3 (= foo_~i~1 0)))) [2018-01-24 13:20:25,523 INFO L401 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-01-24 13:20:25,523 INFO L401 ceAbstractionStarter]: For program point L15(lines 15 17) no Hoare annotation was computed. [2018-01-24 13:20:25,523 INFO L401 ceAbstractionStarter]: For program point fooErr1RequiresViolation(lines 1 34) no Hoare annotation was computed. [2018-01-24 13:20:25,523 INFO L401 ceAbstractionStarter]: For program point L16'(line 16) no Hoare annotation was computed. [2018-01-24 13:20:25,523 INFO L401 ceAbstractionStarter]: For program point L15''(lines 15 17) no Hoare annotation was computed. [2018-01-24 13:20:25,523 INFO L401 ceAbstractionStarter]: For program point L16''(line 16) no Hoare annotation was computed. [2018-01-24 13:20:25,523 INFO L401 ceAbstractionStarter]: For program point fooErr0AssertViolation(line 16) no Hoare annotation was computed. [2018-01-24 13:20:25,523 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 34) the Hoare annotation is: true [2018-01-24 13:20:25,523 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 34) no Hoare annotation was computed. [2018-01-24 13:20:25,523 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 34) the Hoare annotation is: true [2018-01-24 13:20:25,523 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 34) no Hoare annotation was computed. [2018-01-24 13:20:25,524 INFO L401 ceAbstractionStarter]: For program point L28''''(lines 28 32) no Hoare annotation was computed. [2018-01-24 13:20:25,524 INFO L401 ceAbstractionStarter]: For program point mainErr0AssertViolation(line 26) no Hoare annotation was computed. [2018-01-24 13:20:25,524 INFO L401 ceAbstractionStarter]: For program point mainErr2EnsuresViolation(lines 21 34) no Hoare annotation was computed. [2018-01-24 13:20:25,524 INFO L401 ceAbstractionStarter]: For program point mainErr1AssertViolation(line 29) no Hoare annotation was computed. [2018-01-24 13:20:25,524 INFO L401 ceAbstractionStarter]: For program point L25(lines 25 27) no Hoare annotation was computed. [2018-01-24 13:20:25,524 INFO L401 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-01-24 13:20:25,524 INFO L401 ceAbstractionStarter]: For program point L26(line 26) no Hoare annotation was computed. [2018-01-24 13:20:25,524 INFO L397 ceAbstractionStarter]: At program point L25'''(lines 25 27) the Hoare annotation is: (let ((.cse0 (= 32 (select |#length| |main_~#mask~3.base|))) (.cse1 (= (store |old(#valid)| |main_~#mask~3.base| 1) |#valid|)) (.cse2 (= 0 (select |old(#valid)| |main_~#mask~3.base|))) (.cse3 (= 0 |main_~#mask~3.offset|))) (or (and (<= 1 main_~i~3) .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse1 (= main_~i~3 0) .cse2 .cse3))) [2018-01-24 13:20:25,524 INFO L401 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2018-01-24 13:20:25,524 INFO L401 ceAbstractionStarter]: For program point L28(lines 28 32) no Hoare annotation was computed. [2018-01-24 13:20:25,524 INFO L401 ceAbstractionStarter]: For program point L24''''(line 24) no Hoare annotation was computed. [2018-01-24 13:20:25,524 INFO L401 ceAbstractionStarter]: For program point L29'(lines 29 31) no Hoare annotation was computed. [2018-01-24 13:20:25,524 INFO L401 ceAbstractionStarter]: For program point L24'''''(line 24) no Hoare annotation was computed. [2018-01-24 13:20:25,524 INFO L401 ceAbstractionStarter]: For program point L25''''(lines 25 27) no Hoare annotation was computed. [2018-01-24 13:20:25,524 INFO L401 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2018-01-24 13:20:25,525 INFO L401 ceAbstractionStarter]: For program point L24''(line 24) no Hoare annotation was computed. [2018-01-24 13:20:25,525 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 21 34) no Hoare annotation was computed. [2018-01-24 13:20:25,525 INFO L401 ceAbstractionStarter]: For program point L25''(lines 25 27) no Hoare annotation was computed. [2018-01-24 13:20:25,525 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 21 34) no Hoare annotation was computed. [2018-01-24 13:20:25,525 INFO L397 ceAbstractionStarter]: At program point mainENTRY(lines 21 34) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-24 13:20:25,525 INFO L401 ceAbstractionStarter]: For program point L24'''(line 24) no Hoare annotation was computed. [2018-01-24 13:20:25,525 INFO L397 ceAbstractionStarter]: At program point L26'(line 26) the Hoare annotation is: (and (= 32 (select |#length| |main_~#mask~3.base|)) (= (store |old(#valid)| |main_~#mask~3.base| 1) |#valid|) (<= 0 main_~i~3) (= 0 (select |old(#valid)| |main_~#mask~3.base|)) (= 0 |main_~#mask~3.offset|)) [2018-01-24 13:20:25,525 INFO L401 ceAbstractionStarter]: For program point L28''(lines 28 32) no Hoare annotation was computed. [2018-01-24 13:20:25,525 INFO L401 ceAbstractionStarter]: For program point L26''(line 26) no Hoare annotation was computed. [2018-01-24 13:20:25,525 INFO L401 ceAbstractionStarter]: For program point L24'(line 24) no Hoare annotation was computed. [2018-01-24 13:20:25,525 INFO L397 ceAbstractionStarter]: At program point L28'''(lines 28 32) the Hoare annotation is: (let ((.cse0 (= 32 (select |#length| |main_~#mask~3.base|))) (.cse1 (= (store |old(#valid)| |main_~#mask~3.base| 1) |#valid|)) (.cse2 (= 0 (select |old(#valid)| |main_~#mask~3.base|))) (.cse3 (= 0 |main_~#mask~3.offset|))) (or (and (<= 1 main_~i~3) .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse1 (= main_~i~3 0) .cse2 .cse3))) [2018-01-24 13:20:25,530 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,531 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,534 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,534 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,536 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,537 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,537 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,539 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,539 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,539 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,541 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,541 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,542 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,543 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 01:20:25 BoogieIcfgContainer [2018-01-24 13:20:25,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 13:20:25,546 INFO L168 Benchmark]: Toolchain (without parser) took 4953.55 ms. Allocated memory was 300.9 MB in the beginning and 511.7 MB in the end (delta: 210.8 MB). Free memory was 261.8 MB in the beginning and 386.4 MB in the end (delta: -124.6 MB). Peak memory consumption was 86.2 MB. Max. memory is 5.3 GB. [2018-01-24 13:20:25,547 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 300.9 MB. Free memory is still 265.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 13:20:25,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.04 ms. Allocated memory is still 300.9 MB. Free memory was 259.8 MB in the beginning and 251.8 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. [2018-01-24 13:20:25,548 INFO L168 Benchmark]: Boogie Preprocessor took 32.92 ms. Allocated memory is still 300.9 MB. Free memory was 251.8 MB in the beginning and 249.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 13:20:25,548 INFO L168 Benchmark]: RCFGBuilder took 207.63 ms. Allocated memory is still 300.9 MB. Free memory was 249.8 MB in the beginning and 234.8 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 5.3 GB. [2018-01-24 13:20:25,549 INFO L168 Benchmark]: TraceAbstraction took 4548.18 ms. Allocated memory was 300.9 MB in the beginning and 511.7 MB in the end (delta: 210.8 MB). Free memory was 234.8 MB in the beginning and 386.4 MB in the end (delta: -151.6 MB). Peak memory consumption was 59.2 MB. Max. memory is 5.3 GB. [2018-01-24 13:20:25,550 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 300.9 MB. Free memory is still 265.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 157.04 ms. Allocated memory is still 300.9 MB. Free memory was 259.8 MB in the beginning and 251.8 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 32.92 ms. Allocated memory is still 300.9 MB. Free memory was 251.8 MB in the beginning and 249.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 207.63 ms. Allocated memory is still 300.9 MB. Free memory was 249.8 MB in the beginning and 234.8 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 4548.18 ms. Allocated memory was 300.9 MB in the beginning and 511.7 MB in the end (delta: 210.8 MB). Free memory was 234.8 MB in the beginning and 386.4 MB in the end (delta: -151.6 MB). Peak memory consumption was 59.2 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 26]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 29]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant [2018-01-24 13:20:25,555 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,555 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,556 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,557 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: ((((1 <= i && 32 == unknown-#length-unknown[mask]) && \old(\valid)[mask := 1] == \valid) && 0 == \old(\valid)[mask]) && 0 == mask) || ((((32 == unknown-#length-unknown[mask] && \old(\valid)[mask := 1] == \valid) && i == 0) && 0 == \old(\valid)[mask]) && 0 == mask) - InvariantResult [Line: 15]: Loop Invariant [2018-01-24 13:20:25,558 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,558 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,558 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,560 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,560 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,560 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: ((((((((1 == \valid[b] && unknown-#length-unknown[b] == 32) && size == 32) && b == 0) && 1 <= i) || !(0 == b)) || !(\valid[b] == 1)) || !(32 == \old(size))) || !(32 == unknown-#length-unknown[b])) || ((((size == 32 && 32 == unknown-#length-unknown[b]) && 1 == \valid[b]) && b == 0) && i == 0) - InvariantResult [Line: 25]: Loop Invariant [2018-01-24 13:20:25,562 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,562 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,563 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 13:20:25,563 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: ((((1 <= i && 32 == unknown-#length-unknown[mask]) && \old(\valid)[mask := 1] == \valid) && 0 == \old(\valid)[mask]) && 0 == mask) || ((((32 == unknown-#length-unknown[mask] && \old(\valid)[mask := 1] == \valid) && i == 0) && 0 == \old(\valid)[mask]) && 0 == mask) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 6 error locations. SAFE Result, 4.4s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 341 SDtfs, 384 SDslu, 1101 SDs, 0 SdLazy, 395 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 710 GetRequests, 603 SyntacticMatches, 5 SemanticMatches, 102 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 37 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 17 PreInvPairs, 26 NumberOfFragments, 188 HoareAnnotationTreeSize, 17 FomulaSimplifications, 143 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 229 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 576 NumberOfCodeBlocks, 540 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 874 ConstructedInterpolants, 34 QuantifiedInterpolants, 160100 SizeOfPredicates, 12 NumberOfNonLiveVariables, 766 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 27 InterpolantComputations, 8 PerfectInterpolantSequences, 213/438 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_RubberTaipan+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_13-20-25-568.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_RubberTaipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_13-20-25-568.csv Received shutdown request...