java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength5_true-valid-memsafety.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 06:00:05,875 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 06:00:05,876 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 06:00:05,890 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 06:00:05,891 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 06:00:05,892 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 06:00:05,893 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 06:00:05,894 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 06:00:05,896 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 06:00:05,897 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 06:00:05,897 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 06:00:05,897 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 06:00:05,898 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 06:00:05,899 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 06:00:05,899 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 06:00:05,902 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 06:00:05,904 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 06:00:05,906 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 06:00:05,907 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 06:00:05,909 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 06:00:05,911 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 06:00:05,912 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 06:00:05,912 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 06:00:05,913 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 06:00:05,914 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 06:00:05,915 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 06:00:05,915 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 06:00:05,916 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 06:00:05,916 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 06:00:05,916 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 06:00:05,917 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 06:00:05,917 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf [2018-01-25 06:00:05,927 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 06:00:05,927 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 06:00:05,928 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 06:00:05,928 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 06:00:05,929 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 06:00:05,929 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 06:00:05,929 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-25 06:00:05,929 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 06:00:05,930 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 06:00:05,930 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 06:00:05,930 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 06:00:05,930 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 06:00:05,931 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 06:00:05,931 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 06:00:05,931 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 06:00:05,931 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 06:00:05,931 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 06:00:05,932 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 06:00:05,932 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 06:00:05,932 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 06:00:05,932 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 06:00:05,932 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 06:00:05,933 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 06:00:05,933 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 06:00:05,933 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 06:00:05,933 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 06:00:05,933 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 06:00:05,934 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 06:00:05,934 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 06:00:05,934 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 06:00:05,934 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 06:00:05,934 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 06:00:05,934 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 06:00:05,935 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 06:00:05,935 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 06:00:05,936 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 06:00:05,969 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 06:00:05,978 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 06:00:05,981 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 06:00:05,982 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 06:00:05,982 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 06:00:05,983 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength5_true-valid-memsafety.c [2018-01-25 06:00:06,102 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 06:00:06,106 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 06:00:06,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 06:00:06,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 06:00:06,111 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 06:00:06,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 06:00:06" (1/1) ... [2018-01-25 06:00:06,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78b7f2f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:00:06, skipping insertion in model container [2018-01-25 06:00:06,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 06:00:06" (1/1) ... [2018-01-25 06:00:06,134 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 06:00:06,152 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 06:00:06,285 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 06:00:06,302 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 06:00:06,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:00:06 WrapperNode [2018-01-25 06:00:06,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 06:00:06,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 06:00:06,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 06:00:06,311 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 06:00:06,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:00:06" (1/1) ... [2018-01-25 06:00:06,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:00:06" (1/1) ... [2018-01-25 06:00:06,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:00:06" (1/1) ... [2018-01-25 06:00:06,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:00:06" (1/1) ... [2018-01-25 06:00:06,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:00:06" (1/1) ... [2018-01-25 06:00:06,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:00:06" (1/1) ... [2018-01-25 06:00:06,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:00:06" (1/1) ... [2018-01-25 06:00:06,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 06:00:06,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 06:00:06,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 06:00:06,353 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 06:00:06,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:00:06" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 06:00:06,402 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 06:00:06,403 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 06:00:06,403 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-01-25 06:00:06,403 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 06:00:06,403 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 06:00:06,403 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 06:00:06,403 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 06:00:06,403 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 06:00:06,403 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 06:00:06,403 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-01-25 06:00:06,404 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 06:00:06,404 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 06:00:06,404 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 06:00:06,572 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 06:00:06,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 06:00:06 BoogieIcfgContainer [2018-01-25 06:00:06,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 06:00:06,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 06:00:06,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 06:00:06,576 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 06:00:06,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 06:00:06" (1/3) ... [2018-01-25 06:00:06,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@551bf6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 06:00:06, skipping insertion in model container [2018-01-25 06:00:06,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:00:06" (2/3) ... [2018-01-25 06:00:06,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@551bf6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 06:00:06, skipping insertion in model container [2018-01-25 06:00:06,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 06:00:06" (3/3) ... [2018-01-25 06:00:06,579 INFO L105 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength5_true-valid-memsafety.c [2018-01-25 06:00:06,589 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 06:00:06,597 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-01-25 06:00:06,643 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 06:00:06,643 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 06:00:06,657 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 06:00:06,658 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 06:00:06,658 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 06:00:06,658 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 06:00:06,658 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 06:00:06,658 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 06:00:06,659 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 06:00:06,675 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-01-25 06:00:06,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-01-25 06:00:06,680 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:00:06,681 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:00:06,682 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-25 06:00:06,685 INFO L82 PathProgramCache]: Analyzing trace with hash -215054890, now seen corresponding path program 1 times [2018-01-25 06:00:06,687 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:00:06,727 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:06,727 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:00:06,727 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:06,727 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:00:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:06,781 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:00:06,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:00:06,848 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:00:06,848 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-25 06:00:06,848 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:00:06,850 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 06:00:06,861 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 06:00:06,862 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 06:00:06,864 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2018-01-25 06:00:06,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:00:06,945 INFO L93 Difference]: Finished difference Result 101 states and 123 transitions. [2018-01-25 06:00:06,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 06:00:06,946 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-01-25 06:00:06,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:00:06,956 INFO L225 Difference]: With dead ends: 101 [2018-01-25 06:00:06,956 INFO L226 Difference]: Without dead ends: 59 [2018-01-25 06:00:06,959 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 [2018-01-25 06:00:07,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-01-25 06:00:07,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2018-01-25 06:00:07,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-01-25 06:00:07,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2018-01-25 06:00:07,054 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 11 [2018-01-25 06:00:07,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:00:07,054 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2018-01-25 06:00:07,055 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 06:00:07,055 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2018-01-25 06:00:07,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 06:00:07,055 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:00:07,055 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:00:07,056 INFO L371 AbstractCegarLoop]: === Iteration 2 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-25 06:00:07,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1100032001, now seen corresponding path program 1 times [2018-01-25 06:00:07,056 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:00:07,057 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:07,057 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:00:07,057 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:07,057 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:00:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:07,077 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:00:07,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:00:07,159 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:00:07,159 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 06:00:07,159 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:00:07,161 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 06:00:07,161 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 06:00:07,161 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:00:07,162 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 5 states. [2018-01-25 06:00:07,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:00:07,315 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2018-01-25 06:00:07,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 06:00:07,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-01-25 06:00:07,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:00:07,317 INFO L225 Difference]: With dead ends: 103 [2018-01-25 06:00:07,317 INFO L226 Difference]: Without dead ends: 65 [2018-01-25 06:00:07,318 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-25 06:00:07,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-01-25 06:00:07,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2018-01-25 06:00:07,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-01-25 06:00:07,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2018-01-25 06:00:07,331 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 16 [2018-01-25 06:00:07,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:00:07,332 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2018-01-25 06:00:07,332 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 06:00:07,332 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2018-01-25 06:00:07,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-25 06:00:07,333 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:00:07,333 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:00:07,333 INFO L371 AbstractCegarLoop]: === Iteration 3 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-25 06:00:07,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1974903447, now seen corresponding path program 1 times [2018-01-25 06:00:07,334 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:00:07,335 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:07,335 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:00:07,336 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:07,336 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:00:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:07,359 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:00:07,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:00:07,454 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:07,455 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 06:00:07,456 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2018-01-25 06:00:07,463 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [23], [24], [28], [29], [30], [34], [39], [40], [41], [43], [45], [79], [80], [81], [83], [84] [2018-01-25 06:00:07,529 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 06:00:07,529 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 06:00:08,753 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-25 06:00:08,754 INFO L268 AbstractInterpreter]: Visited 21 different actions 59 times. Merged at 7 different actions 19 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 17 variables. [2018-01-25 06:00:08,773 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-25 06:00:08,773 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:08,773 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-25 06:00:08,783 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:00:08,784 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-25 06:00:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:08,823 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-25 06:00:08,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:00:08,860 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-25 06:00:08,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:00:08,970 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-01-25 06:00:08,970 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 7 [2018-01-25 06:00:08,970 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:00:08,971 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 06:00:08,971 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 06:00:08,971 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-01-25 06:00:08,972 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 5 states. [2018-01-25 06:00:09,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:00:09,085 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2018-01-25 06:00:09,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 06:00:09,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-25 06:00:09,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:00:09,087 INFO L225 Difference]: With dead ends: 67 [2018-01-25 06:00:09,087 INFO L226 Difference]: Without dead ends: 65 [2018-01-25 06:00:09,087 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-01-25 06:00:09,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-01-25 06:00:09,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2018-01-25 06:00:09,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-01-25 06:00:09,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2018-01-25 06:00:09,092 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 23 [2018-01-25 06:00:09,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:00:09,093 INFO L432 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2018-01-25 06:00:09,093 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 06:00:09,093 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2018-01-25 06:00:09,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-25 06:00:09,094 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:00:09,094 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:00:09,094 INFO L371 AbstractCegarLoop]: === Iteration 4 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-25 06:00:09,095 INFO L82 PathProgramCache]: Analyzing trace with hash 621927392, now seen corresponding path program 1 times [2018-01-25 06:00:09,095 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:00:09,096 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:09,096 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:00:09,096 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:09,096 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:00:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:09,112 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:00:09,223 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:00:09,224 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:09,224 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 06:00:09,224 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-01-25 06:00:09,224 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [11], [12], [23], [24], [28], [29], [30], [34], [39], [41], [43], [45], [79], [80], [81], [83], [84] [2018-01-25 06:00:09,226 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 06:00:09,226 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 06:00:10,050 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-25 06:00:10,050 INFO L268 AbstractInterpreter]: Visited 22 different actions 63 times. Merged at 6 different actions 17 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 17 variables. [2018-01-25 06:00:10,070 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-25 06:00:10,071 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:10,071 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-25 06:00:10,078 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:00:10,078 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-25 06:00:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:10,101 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-25 06:00:10,111 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-01-25 06:00:10,111 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-25 06:00:10,169 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-01-25 06:00:10,203 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-01-25 06:00:10,203 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [6] total 7 [2018-01-25 06:00:10,204 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:00:10,204 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 06:00:10,204 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 06:00:10,204 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-25 06:00:10,205 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 3 states. [2018-01-25 06:00:10,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:00:10,241 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2018-01-25 06:00:10,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 06:00:10,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-01-25 06:00:10,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:00:10,245 INFO L225 Difference]: With dead ends: 65 [2018-01-25 06:00:10,245 INFO L226 Difference]: Without dead ends: 64 [2018-01-25 06:00:10,245 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-25 06:00:10,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-01-25 06:00:10,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2018-01-25 06:00:10,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-01-25 06:00:10,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2018-01-25 06:00:10,253 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 28 [2018-01-25 06:00:10,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:00:10,253 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2018-01-25 06:00:10,253 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 06:00:10,253 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2018-01-25 06:00:10,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 06:00:10,254 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:00:10,254 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:00:10,255 INFO L371 AbstractCegarLoop]: === Iteration 5 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-25 06:00:10,255 INFO L82 PathProgramCache]: Analyzing trace with hash 2099880015, now seen corresponding path program 1 times [2018-01-25 06:00:10,255 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:00:10,256 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:10,256 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:00:10,256 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:10,256 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:00:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:10,270 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:00:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:00:10,496 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:10,496 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 06:00:10,496 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 30 with the following transitions: [2018-01-25 06:00:10,496 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [11], [13], [16], [23], [24], [28], [29], [30], [34], [39], [41], [43], [45], [79], [80], [81], [83], [84] [2018-01-25 06:00:10,498 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 06:00:10,498 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 06:00:11,173 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-25 06:00:11,173 INFO L268 AbstractInterpreter]: Visited 23 different actions 67 times. Merged at 6 different actions 17 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 17 variables. [2018-01-25 06:00:11,175 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-25 06:00:11,176 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:11,176 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 [2018-01-25 06:00:11,185 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:00:11,185 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-25 06:00:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:11,207 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-25 06:00:11,232 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 [2018-01-25 06:00:11,233 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-25 06:00:11,238 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-25 06:00:11,238 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-25 06:00:11,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-25 06:00:11,315 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-25 06:00:11,446 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-25 06:00:11,480 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:11,480 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 [2018-01-25 06:00:11,485 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:00:11,485 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-25 06:00:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:11,523 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-25 06:00:11,533 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 [2018-01-25 06:00:11,533 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-25 06:00:11,539 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-25 06:00:11,540 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-25 06:00:11,587 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-25 06:00:11,587 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-25 06:00:11,605 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [MP cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (5)] Exception during sending of exit command (exit): Broken pipe [2018-01-25 06:00:11,608 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-25 06:00:11,608 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5, 6, 5] total 15 [2018-01-25 06:00:11,608 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-25 06:00:11,608 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-25 06:00:11,609 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-25 06:00:11,610 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-01-25 06:00:11,610 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 12 states. [2018-01-25 06:00:12,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:00:12,184 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2018-01-25 06:00:12,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-25 06:00:12,185 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-01-25 06:00:12,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:00:12,186 INFO L225 Difference]: With dead ends: 127 [2018-01-25 06:00:12,187 INFO L226 Difference]: Without dead ends: 110 [2018-01-25 06:00:12,187 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 105 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2018-01-25 06:00:12,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-01-25 06:00:12,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 66. [2018-01-25 06:00:12,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-01-25 06:00:12,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2018-01-25 06:00:12,196 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 29 [2018-01-25 06:00:12,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:00:12,197 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2018-01-25 06:00:12,197 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-25 06:00:12,197 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2018-01-25 06:00:12,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 06:00:12,198 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:00:12,198 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:00:12,198 INFO L371 AbstractCegarLoop]: === Iteration 6 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-25 06:00:12,198 INFO L82 PathProgramCache]: Analyzing trace with hash 2099880014, now seen corresponding path program 1 times [2018-01-25 06:00:12,199 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:00:12,199 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:12,200 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:00:12,200 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:12,200 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:00:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:12,210 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:00:12,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-25 06:00:12,261 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:12,261 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 06:00:12,261 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 30 with the following transitions: [2018-01-25 06:00:12,261 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [11], [13], [15], [23], [24], [28], [29], [30], [34], [39], [41], [43], [45], [79], [80], [81], [83], [84] [2018-01-25 06:00:12,262 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 06:00:12,262 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 06:00:12,905 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-25 06:00:12,906 INFO L268 AbstractInterpreter]: Visited 23 different actions 67 times. Merged at 6 different actions 17 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 17 variables. [2018-01-25 06:00:12,919 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-25 06:00:13,098 INFO L232 lantSequenceWeakener]: Weakened 28 states. On average, predicates are now at 70.19% of their original sizes. [2018-01-25 06:00:13,099 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-25 06:00:13,247 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-25 06:00:13,248 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-25 06:00:13,248 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 15 [2018-01-25 06:00:13,248 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:00:13,248 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-25 06:00:13,249 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-25 06:00:13,249 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-01-25 06:00:13,249 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 12 states. [2018-01-25 06:00:13,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:00:13,889 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2018-01-25 06:00:13,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 06:00:13,889 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-01-25 06:00:13,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:00:13,890 INFO L225 Difference]: With dead ends: 72 [2018-01-25 06:00:13,890 INFO L226 Difference]: Without dead ends: 71 [2018-01-25 06:00:13,890 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2018-01-25 06:00:13,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-01-25 06:00:13,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2018-01-25 06:00:13,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-01-25 06:00:13,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-01-25 06:00:13,899 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 29 [2018-01-25 06:00:13,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:00:13,899 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-01-25 06:00:13,899 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-25 06:00:13,899 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-01-25 06:00:13,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 06:00:13,900 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:00:13,900 INFO L322 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:00:13,901 INFO L371 AbstractCegarLoop]: === Iteration 7 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-25 06:00:13,901 INFO L82 PathProgramCache]: Analyzing trace with hash -533212584, now seen corresponding path program 1 times [2018-01-25 06:00:13,901 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:00:13,902 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:13,902 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:00:13,902 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:13,902 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:00:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:13,914 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:00:14,114 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:00:14,114 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:14,114 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 06:00:14,114 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 35 with the following transitions: [2018-01-25 06:00:14,114 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [11], [12], [13], [14], [17], [19], [23], [24], [28], [29], [30], [34], [39], [41], [43], [45], [79], [80], [81], [83], [84] [2018-01-25 06:00:14,115 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 06:00:14,115 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 06:00:14,445 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-25 06:00:14,445 INFO L268 AbstractInterpreter]: Visited 26 different actions 99 times. Merged at 16 different actions 46 times. Never widened. Found 7 fixpoints after 3 different actions. Largest state had 21 variables. [2018-01-25 06:00:14,453 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-25 06:00:14,453 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:14,453 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 [2018-01-25 06:00:14,465 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:00:14,465 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-25 06:00:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:14,492 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-25 06:00:14,671 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:00:14,672 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-25 06:00:14,732 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:00:14,765 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:14,766 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 [2018-01-25 06:00:14,773 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:00:14,773 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-25 06:00:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:14,811 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-25 06:00:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:00:14,818 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-25 06:00:14,886 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:00:14,888 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-25 06:00:14,888 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7, 7, 7] total 15 [2018-01-25 06:00:14,888 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-25 06:00:14,888 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-25 06:00:14,888 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-25 06:00:14,888 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2018-01-25 06:00:14,889 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 15 states. [2018-01-25 06:00:15,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:00:15,069 INFO L93 Difference]: Finished difference Result 140 states and 152 transitions. [2018-01-25 06:00:15,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-25 06:00:15,069 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2018-01-25 06:00:15,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:00:15,070 INFO L225 Difference]: With dead ends: 140 [2018-01-25 06:00:15,070 INFO L226 Difference]: Without dead ends: 97 [2018-01-25 06:00:15,071 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 125 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-01-25 06:00:15,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-01-25 06:00:15,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 79. [2018-01-25 06:00:15,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-01-25 06:00:15,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2018-01-25 06:00:15,082 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 34 [2018-01-25 06:00:15,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:00:15,082 INFO L432 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2018-01-25 06:00:15,082 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-25 06:00:15,082 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2018-01-25 06:00:15,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-25 06:00:15,084 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:00:15,084 INFO L322 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:00:15,084 INFO L371 AbstractCegarLoop]: === Iteration 8 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-25 06:00:15,085 INFO L82 PathProgramCache]: Analyzing trace with hash -2137316393, now seen corresponding path program 1 times [2018-01-25 06:00:15,085 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:00:15,086 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:15,086 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:00:15,086 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:15,086 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:00:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:15,097 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:00:15,151 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-01-25 06:00:15,151 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:15,151 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 06:00:15,151 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 44 with the following transitions: [2018-01-25 06:00:15,152 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [23], [24], [28], [29], [30], [34], [37], [39], [41], [43], [45], [49], [53], [58], [60], [63], [65], [66], [67], [78], [79], [80], [81], [83], [84] [2018-01-25 06:00:15,153 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 06:00:15,153 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 06:00:15,746 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-25 06:00:15,746 INFO L268 AbstractInterpreter]: Visited 30 different actions 87 times. Merged at 15 different actions 36 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 18 variables. [2018-01-25 06:00:15,757 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-25 06:00:15,757 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:15,757 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 [2018-01-25 06:00:15,763 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:00:15,763 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-25 06:00:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:15,791 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-25 06:00:15,965 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-01-25 06:00:15,965 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-25 06:00:16,057 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-01-25 06:00:16,077 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-01-25 06:00:16,078 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [5] total 10 [2018-01-25 06:00:16,078 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:00:16,078 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 06:00:16,078 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 06:00:16,078 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-01-25 06:00:16,079 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand 6 states. [2018-01-25 06:00:16,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:00:16,141 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2018-01-25 06:00:16,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 06:00:16,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2018-01-25 06:00:16,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:00:16,143 INFO L225 Difference]: With dead ends: 135 [2018-01-25 06:00:16,143 INFO L226 Difference]: Without dead ends: 86 [2018-01-25 06:00:16,143 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-01-25 06:00:16,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-01-25 06:00:16,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 79. [2018-01-25 06:00:16,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-01-25 06:00:16,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2018-01-25 06:00:16,155 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 43 [2018-01-25 06:00:16,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:00:16,155 INFO L432 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2018-01-25 06:00:16,155 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 06:00:16,155 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2018-01-25 06:00:16,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-01-25 06:00:16,157 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:00:16,157 INFO L322 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:00:16,157 INFO L371 AbstractCegarLoop]: === Iteration 9 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-25 06:00:16,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1584033375, now seen corresponding path program 1 times [2018-01-25 06:00:16,157 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:00:16,158 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:16,158 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:00:16,159 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:16,159 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:00:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:16,171 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:00:16,252 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-25 06:00:16,252 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:16,253 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 06:00:16,253 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 50 with the following transitions: [2018-01-25 06:00:16,253 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [11], [13], [14], [17], [19], [23], [24], [28], [29], [30], [34], [37], [39], [41], [43], [45], [49], [53], [58], [60], [63], [65], [66], [67], [78], [79], [80], [81], [83], [84] [2018-01-25 06:00:16,254 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 06:00:16,255 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 06:00:16,980 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-25 06:00:16,980 INFO L268 AbstractInterpreter]: Visited 35 different actions 119 times. Merged at 24 different actions 57 times. Never widened. Found 8 fixpoints after 4 different actions. Largest state had 21 variables. [2018-01-25 06:00:17,004 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-25 06:00:17,004 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:17,005 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-25 06:00:17,016 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:00:17,016 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-25 06:00:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:17,046 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-25 06:00:17,065 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-25 06:00:17,065 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-25 06:00:17,121 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-25 06:00:17,142 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:17,142 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 10 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 10 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-25 06:00:17,147 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:00:17,147 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-25 06:00:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:17,182 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-25 06:00:17,215 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-25 06:00:17,215 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-25 06:00:17,241 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-25 06:00:17,243 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-25 06:00:17,244 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 9 [2018-01-25 06:00:17,244 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-25 06:00:17,244 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 06:00:17,245 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 06:00:17,245 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-25 06:00:17,245 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 6 states. [2018-01-25 06:00:17,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:00:17,286 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2018-01-25 06:00:17,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 06:00:17,286 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2018-01-25 06:00:17,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:00:17,287 INFO L225 Difference]: With dead ends: 131 [2018-01-25 06:00:17,287 INFO L226 Difference]: Without dead ends: 110 [2018-01-25 06:00:17,288 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-25 06:00:17,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-01-25 06:00:17,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 88. [2018-01-25 06:00:17,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-01-25 06:00:17,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2018-01-25 06:00:17,297 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 49 [2018-01-25 06:00:17,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:00:17,297 INFO L432 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2018-01-25 06:00:17,298 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 06:00:17,298 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2018-01-25 06:00:17,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-01-25 06:00:17,299 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:00:17,299 INFO L322 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:00:17,299 INFO L371 AbstractCegarLoop]: === Iteration 10 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-25 06:00:17,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1798255855, now seen corresponding path program 2 times [2018-01-25 06:00:17,300 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:00:17,300 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:17,301 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:00:17,301 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:17,301 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:00:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:17,314 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:00:17,412 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-01-25 06:00:17,412 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:17,412 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 06:00:17,412 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-01-25 06:00:17,413 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-25 06:00:17,413 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:17,413 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-25 06:00:17,423 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-25 06:00:17,424 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-01-25 06:00:17,439 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-25 06:00:17,450 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-25 06:00:17,453 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-25 06:00:17,456 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-25 06:00:17,517 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-25 06:00:17,517 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-25 06:00:17,646 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-25 06:00:17,666 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:17,667 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 12 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 12 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-25 06:00:17,670 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-25 06:00:17,670 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-01-25 06:00:17,680 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-25 06:00:17,693 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-25 06:00:17,704 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-25 06:00:17,708 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-25 06:00:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-25 06:00:17,714 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-25 06:00:17,725 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-25 06:00:17,727 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-25 06:00:17,728 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8] total 22 [2018-01-25 06:00:17,728 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-25 06:00:17,728 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-25 06:00:17,729 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-25 06:00:17,729 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2018-01-25 06:00:17,729 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand 16 states. [2018-01-25 06:00:18,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:00:18,062 INFO L93 Difference]: Finished difference Result 162 states and 172 transitions. [2018-01-25 06:00:18,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-01-25 06:00:18,062 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 52 [2018-01-25 06:00:18,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:00:18,064 INFO L225 Difference]: With dead ends: 162 [2018-01-25 06:00:18,064 INFO L226 Difference]: Without dead ends: 135 [2018-01-25 06:00:18,065 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=259, Invalid=1147, Unknown=0, NotChecked=0, Total=1406 [2018-01-25 06:00:18,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-01-25 06:00:18,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 107. [2018-01-25 06:00:18,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-01-25 06:00:18,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 114 transitions. [2018-01-25 06:00:18,078 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 114 transitions. Word has length 52 [2018-01-25 06:00:18,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:00:18,078 INFO L432 AbstractCegarLoop]: Abstraction has 107 states and 114 transitions. [2018-01-25 06:00:18,078 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-25 06:00:18,078 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 114 transitions. [2018-01-25 06:00:18,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-01-25 06:00:18,079 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:00:18,080 INFO L322 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:00:18,080 INFO L371 AbstractCegarLoop]: === Iteration 11 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-25 06:00:18,080 INFO L82 PathProgramCache]: Analyzing trace with hash -88643296, now seen corresponding path program 1 times [2018-01-25 06:00:18,080 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:00:18,081 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:18,081 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-25 06:00:18,081 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:18,081 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:00:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:18,093 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:00:18,288 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-01-25 06:00:18,289 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:18,289 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 06:00:18,289 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 54 with the following transitions: [2018-01-25 06:00:18,289 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [11], [13], [14], [16], [17], [19], [23], [24], [28], [29], [30], [34], [39], [41], [43], [45], [79], [80], [81], [83], [84] [2018-01-25 06:00:18,290 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 06:00:18,290 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 06:00:18,828 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-25 06:00:18,829 INFO L268 AbstractInterpreter]: Visited 26 different actions 99 times. Merged at 16 different actions 46 times. Never widened. Found 7 fixpoints after 3 different actions. Largest state had 21 variables. [2018-01-25 06:00:18,830 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-25 06:00:18,830 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:18,830 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-25 06:00:18,837 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:00:18,838 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-25 06:00:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:18,862 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-25 06:00:18,865 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 [2018-01-25 06:00:18,865 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-25 06:00:18,869 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-25 06:00:18,869 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-25 06:00:18,967 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-01-25 06:00:18,967 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-25 06:00:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-01-25 06:00:19,108 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:19,108 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 14 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 14 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-25 06:00:19,111 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:00:19,111 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-25 06:00:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:19,146 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-25 06:00:19,150 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 [2018-01-25 06:00:19,151 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-25 06:00:19,183 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-25 06:00:19,183 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-25 06:00:19,224 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-01-25 06:00:19,225 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-25 06:00:19,248 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-01-25 06:00:19,249 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-25 06:00:19,249 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6, 7, 6] total 18 [2018-01-25 06:00:19,249 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-25 06:00:19,249 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-25 06:00:19,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-25 06:00:19,250 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2018-01-25 06:00:19,250 INFO L87 Difference]: Start difference. First operand 107 states and 114 transitions. Second operand 14 states. [2018-01-25 06:00:19,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:00:19,533 INFO L93 Difference]: Finished difference Result 141 states and 153 transitions. [2018-01-25 06:00:19,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-25 06:00:19,534 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2018-01-25 06:00:19,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:00:19,535 INFO L225 Difference]: With dead ends: 141 [2018-01-25 06:00:19,536 INFO L226 Difference]: Without dead ends: 140 [2018-01-25 06:00:19,536 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 194 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2018-01-25 06:00:19,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-01-25 06:00:19,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 102. [2018-01-25 06:00:19,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-01-25 06:00:19,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 108 transitions. [2018-01-25 06:00:19,548 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 108 transitions. Word has length 53 [2018-01-25 06:00:19,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:00:19,549 INFO L432 AbstractCegarLoop]: Abstraction has 102 states and 108 transitions. [2018-01-25 06:00:19,549 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-25 06:00:19,549 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 108 transitions. [2018-01-25 06:00:19,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-01-25 06:00:19,551 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:00:19,551 INFO L322 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:00:19,551 INFO L371 AbstractCegarLoop]: === Iteration 12 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-25 06:00:19,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1320798415, now seen corresponding path program 2 times [2018-01-25 06:00:19,552 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:00:19,552 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:19,552 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:00:19,553 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:00:19,553 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:00:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:00:19,569 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:00:19,646 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-25 06:00:19,646 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:19,646 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 06:00:19,646 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-01-25 06:00:19,646 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-25 06:00:19,646 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:00:19,646 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-25 06:00:19,651 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-25 06:00:19,651 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-01-25 06:00:19,659 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-25 06:00:19,660 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-25 06:00:19,662 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-25 06:00:19,676 INFO L700 Elim1Store]: detected not equals via solver [2018-01-25 06:00:19,676 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 [2018-01-25 06:00:19,676 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-25 06:00:19,677 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. [2018-01-25 06:00:19,678 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-01-25 06:00:19,693 INFO L700 Elim1Store]: detected not equals via solver [2018-01-25 06:00:19,694 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 [2018-01-25 06:00:19,694 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-25 06:00:19,696 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. [2018-01-25 06:00:19,696 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-01-25 06:00:19,731 INFO L700 Elim1Store]: detected not equals via solver [2018-01-25 06:00:19,732 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 [2018-01-25 06:00:19,732 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-25 06:00:19,733 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. [2018-01-25 06:00:19,733 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-01-25 06:00:19,764 INFO L700 Elim1Store]: detected not equals via solver [2018-01-25 06:00:19,765 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 [2018-01-25 06:00:19,765 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-25 06:00:19,766 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. [2018-01-25 06:00:19,767 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-01-25 06:00:19,795 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 [2018-01-25 06:00:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-01-25 06:00:19,807 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-25 06:00:19,823 WARN L1007 $PredicateComparison]: unable to prove that (forall ((|v_main_~#mask~3.base_21| Int)) (or (= (store |c_#valid| |v_main_~#mask~3.base_21| 0) |c_old(#valid)|) (not (= 0 (select |c_#valid| |v_main_~#mask~3.base_21|))))) is different from false [2018-01-25 06:00:19,832 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-01-25 06:00:19,852 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-01-25 06:00:19,853 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [7] total 13 [2018-01-25 06:00:19,853 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:00:19,853 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 06:00:19,853 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 06:00:19,853 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=81, Unknown=2, NotChecked=38, Total=156 [2018-01-25 06:00:19,853 INFO L87 Difference]: Start difference. First operand 102 states and 108 transitions. Second operand 6 states. [2018-01-25 06:00:19,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:00:19,907 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2018-01-25 06:00:19,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 06:00:19,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2018-01-25 06:00:19,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:00:19,908 INFO L225 Difference]: With dead ends: 103 [2018-01-25 06:00:19,908 INFO L226 Difference]: Without dead ends: 0 [2018-01-25 06:00:19,909 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 158 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=120, Unknown=2, NotChecked=46, Total=210 [2018-01-25 06:00:19,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-25 06:00:19,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-25 06:00:19,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-25 06:00:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-25 06:00:19,909 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 85 [2018-01-25 06:00:19,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:00:19,909 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-25 06:00:19,909 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 06:00:19,909 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-25 06:00:19,909 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-25 06:00:19,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-25 06:00:20,406 WARN L146 SmtUtils]: Spent 319ms on a formula simplification. DAG size of input: 55 DAG size of output 38 [2018-01-25 06:00:20,547 WARN L146 SmtUtils]: Spent 127ms on a formula simplification. DAG size of input: 46 DAG size of output 33 [2018-01-25 06:00:20,871 WARN L146 SmtUtils]: Spent 321ms on a formula simplification. DAG size of input: 100 DAG size of output 58 [2018-01-25 06:00:20,955 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 35) no Hoare annotation was computed. [2018-01-25 06:00:20,956 INFO L397 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 35) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-25 06:00:20,956 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 35) no Hoare annotation was computed. [2018-01-25 06:00:20,956 INFO L401 ceAbstractionStarter]: For program point fooFINAL(lines 12 19) no Hoare annotation was computed. [2018-01-25 06:00:20,956 INFO L401 ceAbstractionStarter]: For program point L15''''(lines 15 17) no Hoare annotation was computed. [2018-01-25 06:00:20,956 INFO L401 ceAbstractionStarter]: For program point fooEXIT(lines 12 19) no Hoare annotation was computed. [2018-01-25 06:00:20,956 INFO L404 ceAbstractionStarter]: At program point fooENTRY(lines 12 19) the Hoare annotation is: true [2018-01-25 06:00:20,956 INFO L401 ceAbstractionStarter]: For program point fooErr2RequiresViolation(lines 1 35) no Hoare annotation was computed. [2018-01-25 06:00:20,956 INFO L397 ceAbstractionStarter]: At program point L15'''(lines 15 17) the Hoare annotation is: (let ((.cse0 (not (= 0 |foo_#in~b.offset|))) (.cse4 (not (= 32 (select |#length| |foo_#in~b.base|)))) (.cse10 (select |#valid| 0))) (let ((.cse2 (= foo_~i~1 0)) (.cse1 (not (= (select |#valid| |foo_#in~b.base|) 1))) (.cse3 (not (= .cse10 |foo_#in~b.offset|))) (.cse11 (or .cse0 .cse4))) (and (or .cse0 .cse1 (not (= 0 |foo_#in~size|)) (and (= foo_~size 0) .cse2) .cse3 .cse4) (let ((.cse5 (<= foo_~size 1))) (or .cse1 (and .cse5 .cse2) .cse0 (and .cse5 (= 1 foo_~i~1)) (< 1 |foo_#in~size|) .cse3 .cse4)) (let ((.cse6 (= (select |#length| foo_~b.base) 32)) (.cse7 (= (select |#valid| foo_~b.base) 1)) (.cse8 (<= foo_~size 31)) (.cse9 (= foo_~b.offset 0))) (or (and .cse6 .cse7 .cse8 .cse9 (<= 1 foo_~i~1)) (< 31 |foo_#in~size|) .cse1 .cse3 (and (<= |foo_#in~size| foo_~size) .cse6 (= .cse10 foo_~i~1) .cse7 .cse8 .cse9) .cse11)) (or (<= foo_~size 2) .cse1 (< 2 |foo_#in~size|) .cse3 .cse11)))) [2018-01-25 06:00:20,956 INFO L401 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-01-25 06:00:20,956 INFO L401 ceAbstractionStarter]: For program point L15(lines 15 17) no Hoare annotation was computed. [2018-01-25 06:00:20,956 INFO L401 ceAbstractionStarter]: For program point fooErr1RequiresViolation(lines 1 35) no Hoare annotation was computed. [2018-01-25 06:00:20,957 INFO L401 ceAbstractionStarter]: For program point L16'(line 16) no Hoare annotation was computed. [2018-01-25 06:00:20,957 INFO L401 ceAbstractionStarter]: For program point L15''(lines 15 17) no Hoare annotation was computed. [2018-01-25 06:00:20,957 INFO L401 ceAbstractionStarter]: For program point L16''(line 16) no Hoare annotation was computed. [2018-01-25 06:00:20,957 INFO L401 ceAbstractionStarter]: For program point fooErr0AssertViolation(line 16) no Hoare annotation was computed. [2018-01-25 06:00:20,957 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 35) the Hoare annotation is: true [2018-01-25 06:00:20,957 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 35) no Hoare annotation was computed. [2018-01-25 06:00:20,957 INFO L397 ceAbstractionStarter]: At program point L1(lines 1 35) the Hoare annotation is: (= 0 (select |#valid| 0)) [2018-01-25 06:00:20,957 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 35) no Hoare annotation was computed. [2018-01-25 06:00:20,957 INFO L401 ceAbstractionStarter]: For program point mainErr0AssertViolation(line 27) no Hoare annotation was computed. [2018-01-25 06:00:20,957 INFO L401 ceAbstractionStarter]: For program point mainErr2EnsuresViolation(lines 21 35) no Hoare annotation was computed. [2018-01-25 06:00:20,957 INFO L401 ceAbstractionStarter]: For program point mainErr1AssertViolation(line 30) no Hoare annotation was computed. [2018-01-25 06:00:20,957 INFO L401 ceAbstractionStarter]: For program point L25(lines 25 28) no Hoare annotation was computed. [2018-01-25 06:00:20,957 INFO L401 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-01-25 06:00:20,958 INFO L401 ceAbstractionStarter]: For program point L27(line 27) no Hoare annotation was computed. [2018-01-25 06:00:20,958 INFO L397 ceAbstractionStarter]: At program point L25'''(lines 25 28) the Hoare annotation is: (let ((.cse0 (= (store |old(#valid)| |main_~#mask~3.base| 1) |#valid|)) (.cse1 (= 0 (select |old(#valid)| |main_~#mask~3.base|))) (.cse2 (= 0 |main_~#mask~3.offset|))) (or (not (= 0 (select |old(#valid)| 0))) (and (= 32 (select |#length| |main_~#mask~3.base|)) (= |main_~#mask~3.offset| (select |#valid| 0)) .cse0 (= main_~i~3 0) .cse1 .cse2) (and (= main_~c~3.base |main_~#mask~3.base|) .cse0 .cse1 .cse2 (<= 1 main_~i~3) (not (= 0 |main_~#mask~3.base|)) (= (select |#length| main_~c~3.base) 32) (= main_~c~3.offset 0)))) [2018-01-25 06:00:20,958 INFO L401 ceAbstractionStarter]: For program point L29(lines 29 33) no Hoare annotation was computed. [2018-01-25 06:00:20,958 INFO L401 ceAbstractionStarter]: For program point L24''''(line 24) no Hoare annotation was computed. [2018-01-25 06:00:20,958 INFO L397 ceAbstractionStarter]: At program point L27'(line 27) the Hoare annotation is: (let ((.cse1 (= (store |old(#valid)| |main_~#mask~3.base| 1) |#valid|)) (.cse0 (= main_~c~3.base |main_~#mask~3.base|)) (.cse4 (not (= 0 |main_~#mask~3.base|))) (.cse3 (= 0 |main_~#mask~3.offset|)) (.cse2 (= 0 (select |old(#valid)| |main_~#mask~3.base|)))) (or (and .cse0 .cse1 .cse2 .cse3 (= main_~c~3.offset (select |#valid| 0)) .cse4 (= 0 main_~i~3) (= 32 (select |#length| main_~c~3.base))) (and .cse1 (and .cse0 (and (<= 1 main_~i~3) (= 32 (select |#length| |main_~#mask~3.base|))) .cse4 .cse3) .cse2 (= 0 main_~c~3.offset) (<= main_~i~3 31)) (not (= 0 (select |old(#valid)| 0))))) [2018-01-25 06:00:20,958 INFO L401 ceAbstractionStarter]: For program point L24'''''(line 24) no Hoare annotation was computed. [2018-01-25 06:00:20,959 INFO L397 ceAbstractionStarter]: At program point L29'''(lines 29 33) the Hoare annotation is: (let ((.cse0 (= main_~c~3.base |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|)) (.cse4 (not (= 0 |main_~#mask~3.base|))) (.cse5 (select |#length| main_~c~3.base))) (or (and .cse0 .cse1 .cse2 .cse3 (= main_~c~3.offset (select |#valid| 0)) .cse4 (= 0 main_~i~3) (= 32 .cse5)) (not (= 0 (select |old(#valid)| 0))) (and .cse0 .cse1 .cse2 .cse3 (<= 1 main_~i~3) .cse4 (= .cse5 32) (= main_~c~3.offset 0)))) [2018-01-25 06:00:20,959 INFO L401 ceAbstractionStarter]: For program point L25''''(lines 25 28) no Hoare annotation was computed. [2018-01-25 06:00:20,959 INFO L401 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2018-01-25 06:00:20,959 INFO L401 ceAbstractionStarter]: For program point L24''(line 24) no Hoare annotation was computed. [2018-01-25 06:00:20,959 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 21 35) no Hoare annotation was computed. [2018-01-25 06:00:20,959 INFO L401 ceAbstractionStarter]: For program point L25''(lines 25 28) no Hoare annotation was computed. [2018-01-25 06:00:20,959 INFO L401 ceAbstractionStarter]: For program point L31(line 31) no Hoare annotation was computed. [2018-01-25 06:00:20,959 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 21 35) no Hoare annotation was computed. [2018-01-25 06:00:20,959 INFO L397 ceAbstractionStarter]: At program point mainENTRY(lines 21 35) the Hoare annotation is: (or (not (= 0 (select |old(#valid)| 0))) (= |#valid| |old(#valid)|)) [2018-01-25 06:00:20,959 INFO L401 ceAbstractionStarter]: For program point L24'''(line 24) no Hoare annotation was computed. [2018-01-25 06:00:20,960 INFO L401 ceAbstractionStarter]: For program point L29''''(lines 29 33) no Hoare annotation was computed. [2018-01-25 06:00:20,960 INFO L401 ceAbstractionStarter]: For program point L29''(lines 29 33) no Hoare annotation was computed. [2018-01-25 06:00:20,960 INFO L401 ceAbstractionStarter]: For program point L27''(line 27) no Hoare annotation was computed. [2018-01-25 06:00:20,960 INFO L401 ceAbstractionStarter]: For program point L24'(line 24) no Hoare annotation was computed. [2018-01-25 06:00:20,960 INFO L401 ceAbstractionStarter]: For program point L30'(lines 30 32) no Hoare annotation was computed. [2018-01-25 06:00:20,966 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:20,967 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:20,971 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:20,971 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:20,975 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:20,976 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:20,976 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:20,976 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:20,976 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:20,977 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:20,980 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:20,981 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:20,981 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:20,981 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:20,982 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:20,982 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:20,983 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:20,984 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:20,985 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:20,985 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:20,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.01 06:00:20 BoogieIcfgContainer [2018-01-25 06:00:20,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-25 06:00:20,988 INFO L168 Benchmark]: Toolchain (without parser) took 14885.19 ms. Allocated memory was 305.7 MB in the beginning and 774.9 MB in the end (delta: 469.2 MB). Free memory was 266.7 MB in the beginning and 457.7 MB in the end (delta: -191.0 MB). Peak memory consumption was 278.3 MB. Max. memory is 5.3 GB. [2018-01-25 06:00:20,989 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 305.7 MB. Free memory is still 270.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-25 06:00:20,989 INFO L168 Benchmark]: CACSL2BoogieTranslator took 203.66 ms. Allocated memory is still 305.7 MB. Free memory was 264.7 MB in the beginning and 256.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. [2018-01-25 06:00:20,990 INFO L168 Benchmark]: Boogie Preprocessor took 42.06 ms. Allocated memory is still 305.7 MB. Free memory was 256.7 MB in the beginning and 254.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-25 06:00:20,990 INFO L168 Benchmark]: RCFGBuilder took 219.54 ms. Allocated memory is still 305.7 MB. Free memory was 254.8 MB in the beginning and 240.2 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. [2018-01-25 06:00:20,991 INFO L168 Benchmark]: TraceAbstraction took 14413.91 ms. Allocated memory was 305.7 MB in the beginning and 774.9 MB in the end (delta: 469.2 MB). Free memory was 240.2 MB in the beginning and 457.7 MB in the end (delta: -217.5 MB). Peak memory consumption was 251.7 MB. Max. memory is 5.3 GB. [2018-01-25 06:00:20,992 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 305.7 MB. Free memory is still 270.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 203.66 ms. Allocated memory is still 305.7 MB. Free memory was 264.7 MB in the beginning and 256.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 42.06 ms. Allocated memory is still 305.7 MB. Free memory was 256.7 MB in the beginning and 254.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 219.54 ms. Allocated memory is still 305.7 MB. Free memory was 254.8 MB in the beginning and 240.2 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 14413.91 ms. Allocated memory was 305.7 MB in the beginning and 774.9 MB in the end (delta: 469.2 MB). Free memory was 240.2 MB in the beginning and 457.7 MB in the end (delta: -217.5 MB). Peak memory consumption was 251.7 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 20 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 160 LocStat_NO_SUPPORTING_DISEQUALITIES : 30 LocStat_NO_DISJUNCTIONS : -40 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 27 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 34 TransStat_NO_SUPPORTING_DISEQUALITIES : 4 TransStat_NO_DISJUNCTIONS : 28 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 1.357603 RENAME_VARIABLES(MILLISECONDS) : 0.170119 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 1.304092 PROJECTAWAY(MILLISECONDS) : 0.378758 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.162157 DISJOIN(MILLISECONDS) : 0.359024 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.197854 ADD_EQUALITY(MILLISECONDS) : 0.058171 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.045359 #CONJOIN_DISJUNCTIVE : 95 #RENAME_VARIABLES : 231 #UNFREEZE : 0 #CONJOIN : 175 #PROJECTAWAY : 158 #ADD_WEAK_EQUALITY : 4 #DISJOIN : 27 #RENAME_VARIABLES_DISJUNCTIVE : 224 #ADD_EQUALITY : 34 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 1 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 21 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 176 LocStat_NO_SUPPORTING_DISEQUALITIES : 32 LocStat_NO_DISJUNCTIONS : -42 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 28 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 34 TransStat_NO_SUPPORTING_DISEQUALITIES : 4 TransStat_NO_DISJUNCTIONS : 29 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 1.323591 RENAME_VARIABLES(MILLISECONDS) : 0.155074 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 1.276658 PROJECTAWAY(MILLISECONDS) : 0.295480 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.100210 DISJOIN(MILLISECONDS) : 0.365067 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.178410 ADD_EQUALITY(MILLISECONDS) : 0.037215 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.014000 #CONJOIN_DISJUNCTIVE : 96 #RENAME_VARIABLES : 230 #UNFREEZE : 0 #CONJOIN : 173 #PROJECTAWAY : 157 #ADD_WEAK_EQUALITY : 4 #DISJOIN : 32 #RENAME_VARIABLES_DISJUNCTIVE : 226 #ADD_EQUALITY : 34 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 1 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 22 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 188 LocStat_NO_SUPPORTING_DISEQUALITIES : 34 LocStat_NO_DISJUNCTIONS : -44 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 29 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 34 TransStat_NO_SUPPORTING_DISEQUALITIES : 4 TransStat_NO_DISJUNCTIONS : 30 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 1.376786 RENAME_VARIABLES(MILLISECONDS) : 0.199640 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 1.332489 PROJECTAWAY(MILLISECONDS) : 0.339678 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.078380 DISJOIN(MILLISECONDS) : 0.349775 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.227049 ADD_EQUALITY(MILLISECONDS) : 0.031557 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.009936 #CONJOIN_DISJUNCTIVE : 100 #RENAME_VARIABLES : 238 #UNFREEZE : 0 #CONJOIN : 177 #PROJECTAWAY : 162 #ADD_WEAK_EQUALITY : 4 #DISJOIN : 35 #RENAME_VARIABLES_DISJUNCTIVE : 234 #ADD_EQUALITY : 34 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 1 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 21 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 176 LocStat_NO_SUPPORTING_DISEQUALITIES : 32 LocStat_NO_DISJUNCTIONS : -42 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 29 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 32 TransStat_NO_SUPPORTING_DISEQUALITIES : 5 TransStat_NO_DISJUNCTIONS : 29 TransStat_MAX_NO_DISJUNCTIONS : 1 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 1.168642 RENAME_VARIABLES(MILLISECONDS) : 0.124774 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 1.134764 PROJECTAWAY(MILLISECONDS) : 0.297652 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.077964 DISJOIN(MILLISECONDS) : 0.275765 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.147364 ADD_EQUALITY(MILLISECONDS) : 0.034589 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.020795 #CONJOIN_DISJUNCTIVE : 100 #RENAME_VARIABLES : 234 #UNFREEZE : 0 #CONJOIN : 173 #PROJECTAWAY : 153 #ADD_WEAK_EQUALITY : 4 #DISJOIN : 28 #RENAME_VARIABLES_DISJUNCTIVE : 234 #ADD_EQUALITY : 32 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 2 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 24 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 222 LocStat_NO_SUPPORTING_DISEQUALITIES : 38 LocStat_NO_DISJUNCTIONS : -48 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 32 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 38 TransStat_NO_SUPPORTING_DISEQUALITIES : 4 TransStat_NO_DISJUNCTIONS : 33 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.432134 RENAME_VARIABLES(MILLISECONDS) : 0.138919 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.412440 PROJECTAWAY(MILLISECONDS) : 0.117302 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.045677 DISJOIN(MILLISECONDS) : 0.146302 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.156544 ADD_EQUALITY(MILLISECONDS) : 0.016677 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.005242 #CONJOIN_DISJUNCTIVE : 123 #RENAME_VARIABLES : 269 #UNFREEZE : 0 #CONJOIN : 190 #PROJECTAWAY : 190 #ADD_WEAK_EQUALITY : 5 #DISJOIN : 29 #RENAME_VARIABLES_DISJUNCTIVE : 263 #ADD_EQUALITY : 38 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 1 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 29 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 226 LocStat_NO_SUPPORTING_DISEQUALITIES : 56 LocStat_NO_DISJUNCTIONS : -58 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 36 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 36 TransStat_NO_SUPPORTING_DISEQUALITIES : 6 TransStat_NO_DISJUNCTIONS : 36 TransStat_MAX_NO_DISJUNCTIONS : 1 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.728960 RENAME_VARIABLES(MILLISECONDS) : 0.067757 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.708997 PROJECTAWAY(MILLISECONDS) : 0.691474 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.075760 DISJOIN(MILLISECONDS) : 0.155118 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.081192 ADD_EQUALITY(MILLISECONDS) : 0.025249 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.007029 #CONJOIN_DISJUNCTIVE : 142 #RENAME_VARIABLES : 318 #UNFREEZE : 0 #CONJOIN : 215 #PROJECTAWAY : 202 #ADD_WEAK_EQUALITY : 5 #DISJOIN : 31 #RENAME_VARIABLES_DISJUNCTIVE : 318 #ADD_EQUALITY : 36 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 3 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 33 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 268 LocStat_NO_SUPPORTING_DISEQUALITIES : 64 LocStat_NO_DISJUNCTIONS : -66 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 41 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 40 TransStat_NO_SUPPORTING_DISEQUALITIES : 6 TransStat_NO_DISJUNCTIONS : 41 TransStat_MAX_NO_DISJUNCTIONS : 1 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.695101 RENAME_VARIABLES(MILLISECONDS) : 0.221215 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.664392 PROJECTAWAY(MILLISECONDS) : 0.155753 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.059835 DISJOIN(MILLISECONDS) : 0.208736 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.248692 ADD_EQUALITY(MILLISECONDS) : 0.018120 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.007785 #CONJOIN_DISJUNCTIVE : 167 #RENAME_VARIABLES : 367 #UNFREEZE : 0 #CONJOIN : 246 #PROJECTAWAY : 242 #ADD_WEAK_EQUALITY : 6 #DISJOIN : 35 #RENAME_VARIABLES_DISJUNCTIVE : 367 #ADD_EQUALITY : 40 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 3 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 24 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 217 LocStat_NO_SUPPORTING_DISEQUALITIES : 38 LocStat_NO_DISJUNCTIONS : -48 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 32 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 38 TransStat_NO_SUPPORTING_DISEQUALITIES : 4 TransStat_NO_DISJUNCTIONS : 33 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.624696 RENAME_VARIABLES(MILLISECONDS) : 0.190604 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.596472 PROJECTAWAY(MILLISECONDS) : 0.120142 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.080422 DISJOIN(MILLISECONDS) : 0.208300 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.216009 ADD_EQUALITY(MILLISECONDS) : 0.016758 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.008691 #CONJOIN_DISJUNCTIVE : 131 #RENAME_VARIABLES : 301 #UNFREEZE : 0 #CONJOIN : 216 #PROJECTAWAY : 207 #ADD_WEAK_EQUALITY : 5 #DISJOIN : 31 #RENAME_VARIABLES_DISJUNCTIVE : 295 #ADD_EQUALITY : 38 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 1 * 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 - 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: 27]: 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: 30]: 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: 29]: Loop Invariant [2018-01-25 06:00:21,004 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:21,005 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:21,006 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:21,006 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: ((((((((c == mask && \old(\valid)[mask := 1] == \valid) && 0 == \old(\valid)[mask]) && 0 == mask) && c == \valid[0]) && !(0 == mask)) && 0 == i) && 32 == unknown-#length-unknown[c]) || !(0 == \old(\valid)[0])) || (((((((c == mask && \old(\valid)[mask := 1] == \valid) && 0 == \old(\valid)[mask]) && 0 == mask) && 1 <= i) && !(0 == mask)) && unknown-#length-unknown[c] == 32) && c == 0) - InvariantResult [Line: 15]: Loop Invariant [2018-01-25 06:00:21,009 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:21,009 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:21,009 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:21,009 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:21,010 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:21,010 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:21,012 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:21,013 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:21,013 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:21,013 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:21,013 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:21,014 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: (((((((!(0 == b) || !(\valid[b] == 1)) || !(0 == \old(size))) || (size == 0 && i == 0)) || !(\valid[0] == b)) || !(32 == unknown-#length-unknown[b])) && ((((((!(\valid[b] == 1) || (size <= 1 && i == 0)) || !(0 == b)) || (size <= 1 && 1 == i)) || 1 < \old(size)) || !(\valid[0] == b)) || !(32 == unknown-#length-unknown[b]))) && (((((((((unknown-#length-unknown[b] == 32 && \valid[b] == 1) && size <= 31) && b == 0) && 1 <= i) || 31 < \old(size)) || !(\valid[b] == 1)) || !(\valid[0] == b)) || (((((\old(size) <= size && unknown-#length-unknown[b] == 32) && \valid[0] == i) && \valid[b] == 1) && size <= 31) && b == 0)) || !(0 == b) || !(32 == unknown-#length-unknown[b]))) && ((((size <= 2 || !(\valid[b] == 1)) || 2 < \old(size)) || !(\valid[0] == b)) || !(0 == b) || !(32 == unknown-#length-unknown[b])) - InvariantResult [Line: 25]: Loop Invariant [2018-01-25 06:00:21,015 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:21,015 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:21,016 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-25 06:00:21,016 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: (!(0 == \old(\valid)[0]) || (((((32 == unknown-#length-unknown[mask] && mask == \valid[0]) && \old(\valid)[mask := 1] == \valid) && i == 0) && 0 == \old(\valid)[mask]) && 0 == mask)) || (((((((c == mask && \old(\valid)[mask := 1] == \valid) && 0 == \old(\valid)[mask]) && 0 == mask) && 1 <= i) && !(0 == mask)) && unknown-#length-unknown[c] == 32) && c == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 6 error locations. SAFE Result, 14.3s OverallTime, 12 OverallIterations, 7 TraceHistogramMax, 2.6s AutomataDifference, 0.0s DeadEndRemovalTime, 1.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 418 SDtfs, 935 SDslu, 1303 SDs, 0 SdLazy, 1073 SolverSat, 158 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 1355 GetRequests, 1157 SyntacticMatches, 41 SemanticMatches, 157 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.7s AbstIntTime, 8 AbstIntIterations, 1 AbstIntStrong, 0.854363790970934 AbsIntWeakeningRatio, 1.1785714285714286 AbsIntAvgWeakeningVarsNumRemoved, 5.357142857142857 AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 202 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 23 PreInvPairs, 41 NumberOfFragments, 423 HoareAnnotationTreeSize, 23 FomulaSimplifications, 1004 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1813 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 1065 NumberOfCodeBlocks, 999 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1638 ConstructedInterpolants, 94 QuantifiedInterpolants, 323474 SizeOfPredicates, 36 NumberOfNonLiveVariables, 1631 ConjunctsInSsa, 135 ConjunctsInUnsatCore, 40 InterpolantComputations, 10 PerfectInterpolantSequences, 860/1116 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/ArraysOfVariableLength5_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-25_06-00-21-022.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength5_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-VPDomainBenchmark-0-2018-01-25_06-00-21-022.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength5_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-0-2018-01-25_06-00-21-022.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength5_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-VPDomainBenchmark-1-2018-01-25_06-00-21-022.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength5_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-1-2018-01-25_06-00-21-022.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength5_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-VPDomainBenchmark-2-2018-01-25_06-00-21-022.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength5_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-2-2018-01-25_06-00-21-022.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength5_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-VPDomainBenchmark-3-2018-01-25_06-00-21-022.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength5_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-3-2018-01-25_06-00-21-022.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength5_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-VPDomainBenchmark-4-2018-01-25_06-00-21-022.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength5_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-4-2018-01-25_06-00-21-022.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength5_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-VPDomainBenchmark-5-2018-01-25_06-00-21-022.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength5_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-5-2018-01-25_06-00-21-022.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength5_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-VPDomainBenchmark-6-2018-01-25_06-00-21-022.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength5_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-6-2018-01-25_06-00-21-022.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength5_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-VPDomainBenchmark-7-2018-01-25_06-00-21-022.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength5_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-7-2018-01-25_06-00-21-022.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength5_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-25_06-00-21-022.csv Received shutdown request...