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_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 12:16:15,515 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 12:16:15,517 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 12:16:15,529 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 12:16:15,529 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 12:16:15,530 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 12:16:15,531 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 12:16:15,532 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 12:16:15,533 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 12:16:15,534 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 12:16:15,534 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 12:16:15,535 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 12:16:15,535 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 12:16:15,536 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 12:16:15,537 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 12:16:15,539 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 12:16:15,541 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 12:16:15,543 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 12:16:15,544 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 12:16:15,545 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 12:16:15,548 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 12:16:15,548 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 12:16:15,548 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 12:16:15,549 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 12:16:15,550 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 12:16:15,551 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 12:16:15,552 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 12:16:15,552 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 12:16:15,552 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 12:16:15,553 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 12:16:15,553 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 12:16:15,554 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf [2018-01-24 12:16:15,563 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 12:16:15,563 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 12:16:15,564 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 12:16:15,564 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 12:16:15,565 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 12:16:15,565 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 12:16:15,565 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 12:16:15,566 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 12:16:15,566 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 12:16:15,566 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 12:16:15,566 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 12:16:15,566 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 12:16:15,567 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 12:16:15,567 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 12:16:15,567 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 12:16:15,567 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 12:16:15,567 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 12:16:15,568 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 12:16:15,568 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 12:16:15,568 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 12:16:15,568 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 12:16:15,569 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 12:16:15,569 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 12:16:15,569 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 12:16:15,569 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 12:16:15,569 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 12:16:15,570 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 12:16:15,570 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 12:16:15,570 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 12:16:15,570 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 12:16:15,570 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 12:16:15,570 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 12:16:15,571 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 12:16:15,572 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 12:16:15,605 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 12:16:15,618 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 12:16:15,622 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 12:16:15,624 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 12:16:15,624 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 12:16:15,625 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c [2018-01-24 12:16:15,753 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 12:16:15,759 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 12:16:15,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 12:16:15,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 12:16:15,767 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 12:16:15,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 12:16:15" (1/1) ... [2018-01-24 12:16:15,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54d10e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:16:15, skipping insertion in model container [2018-01-24 12:16:15,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 12:16:15" (1/1) ... [2018-01-24 12:16:15,790 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 12:16:15,808 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 12:16:15,916 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 12:16:15,931 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 12:16:15,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:16:15 WrapperNode [2018-01-24 12:16:15,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 12:16:15,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 12:16:15,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 12:16:15,938 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 12:16:15,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:16:15" (1/1) ... [2018-01-24 12:16:15,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:16:15" (1/1) ... [2018-01-24 12:16:15,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:16:15" (1/1) ... [2018-01-24 12:16:15,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:16:15" (1/1) ... [2018-01-24 12:16:15,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:16:15" (1/1) ... [2018-01-24 12:16:15,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:16:15" (1/1) ... [2018-01-24 12:16:15,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:16:15" (1/1) ... [2018-01-24 12:16:15,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 12:16:15,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 12:16:15,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 12:16:15,967 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 12:16:15,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:16:15" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 12:16:16,020 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 12:16:16,021 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 12:16:16,021 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-01-24 12:16:16,021 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 12:16:16,021 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 12:16:16,021 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 12:16:16,021 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 12:16:16,022 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 12:16:16,022 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 12:16:16,022 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-01-24 12:16:16,022 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 12:16:16,022 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 12:16:16,022 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 12:16:16,208 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 12:16:16,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 12:16:16 BoogieIcfgContainer [2018-01-24 12:16:16,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 12:16:16,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 12:16:16,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 12:16:16,211 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 12:16:16,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 12:16:15" (1/3) ... [2018-01-24 12:16:16,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc47f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 12:16:16, skipping insertion in model container [2018-01-24 12:16:16,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:16:15" (2/3) ... [2018-01-24 12:16:16,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc47f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 12:16:16, skipping insertion in model container [2018-01-24 12:16:16,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 12:16:16" (3/3) ... [2018-01-24 12:16:16,215 INFO L105 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration_false-valid-deref-write.c [2018-01-24 12:16:16,222 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 12:16:16,229 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-01-24 12:16:16,279 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 12:16:16,279 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 12:16:16,279 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 12:16:16,280 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 12:16:16,280 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 12:16:16,280 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 12:16:16,280 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 12:16:16,280 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 12:16:16,281 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 12:16:16,303 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-01-24 12:16:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-01-24 12:16:16,310 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:16,312 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:16,312 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:16,317 INFO L82 PathProgramCache]: Analyzing trace with hash -215054890, now seen corresponding path program 1 times [2018-01-24 12:16:16,320 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:16,321 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:16,380 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:16,380 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:16,380 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:16,434 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:16,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:16:16,529 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:16:16,530 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 12:16:16,532 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 12:16:16,547 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 12:16:16,548 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 12:16:16,550 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2018-01-24 12:16:16,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:16,657 INFO L93 Difference]: Finished difference Result 101 states and 123 transitions. [2018-01-24 12:16:16,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 12:16:16,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-01-24 12:16:16,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:16,667 INFO L225 Difference]: With dead ends: 101 [2018-01-24 12:16:16,667 INFO L226 Difference]: Without dead ends: 59 [2018-01-24 12:16:16,670 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 12:16:16,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-01-24 12:16:16,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2018-01-24 12:16:16,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-01-24 12:16:16,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2018-01-24 12:16:16,768 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 11 [2018-01-24 12:16:16,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:16,768 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2018-01-24 12:16:16,768 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 12:16:16,768 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2018-01-24 12:16:16,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 12:16:16,769 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:16,769 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:16,769 INFO L371 AbstractCegarLoop]: === Iteration 2 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:16,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1100032001, now seen corresponding path program 1 times [2018-01-24 12:16:16,769 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:16,770 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:16,770 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:16,771 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:16,771 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:16,788 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:16,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:16:16,892 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:16:16,893 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 12:16:16,894 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 12:16:16,895 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 12:16:16,895 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-24 12:16:16,895 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 6 states. [2018-01-24 12:16:17,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:17,046 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2018-01-24 12:16:17,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 12:16:17,046 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-01-24 12:16:17,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:17,050 INFO L225 Difference]: With dead ends: 95 [2018-01-24 12:16:17,051 INFO L226 Difference]: Without dead ends: 94 [2018-01-24 12:16:17,052 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-24 12:16:17,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-01-24 12:16:17,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 52. [2018-01-24 12:16:17,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-24 12:16:17,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2018-01-24 12:16:17,059 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 16 [2018-01-24 12:16:17,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:17,059 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2018-01-24 12:16:17,059 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 12:16:17,059 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2018-01-24 12:16:17,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 12:16:17,060 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:17,060 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:17,060 INFO L371 AbstractCegarLoop]: === Iteration 3 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:17,060 INFO L82 PathProgramCache]: Analyzing trace with hash -258746290, now seen corresponding path program 1 times [2018-01-24 12:16:17,060 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:17,060 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:17,061 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:17,061 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:17,061 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:17,076 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:17,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:16:17,180 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:16:17,180 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 12:16:17,181 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 12:16:17,181 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 12:16:17,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:16:17,181 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 5 states. [2018-01-24 12:16:17,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:17,274 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2018-01-24 12:16:17,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 12:16:17,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-24 12:16:17,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:17,276 INFO L225 Difference]: With dead ends: 60 [2018-01-24 12:16:17,277 INFO L226 Difference]: Without dead ends: 59 [2018-01-24 12:16:17,277 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-24 12:16:17,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-01-24 12:16:17,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2018-01-24 12:16:17,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-01-24 12:16:17,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2018-01-24 12:16:17,286 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 17 [2018-01-24 12:16:17,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:17,286 INFO L432 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2018-01-24 12:16:17,286 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 12:16:17,286 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2018-01-24 12:16:17,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 12:16:17,287 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:17,287 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:17,287 INFO L371 AbstractCegarLoop]: === Iteration 4 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:17,288 INFO L82 PathProgramCache]: Analyzing trace with hash -258746291, now seen corresponding path program 1 times [2018-01-24 12:16:17,288 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:17,288 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:17,289 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:17,289 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:17,289 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:17,299 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:17,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:16:17,356 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:16:17,356 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 12:16:17,356 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 12:16:17,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 12:16:17,357 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:16:17,357 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 5 states. [2018-01-24 12:16:17,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:17,406 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2018-01-24 12:16:17,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 12:16:17,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-24 12:16:17,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:17,407 INFO L225 Difference]: With dead ends: 53 [2018-01-24 12:16:17,407 INFO L226 Difference]: Without dead ends: 52 [2018-01-24 12:16:17,408 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-24 12:16:17,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-01-24 12:16:17,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-01-24 12:16:17,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-24 12:16:17,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2018-01-24 12:16:17,416 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 17 [2018-01-24 12:16:17,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:17,416 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2018-01-24 12:16:17,416 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 12:16:17,416 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2018-01-24 12:16:17,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 12:16:17,417 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:17,417 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:17,418 INFO L371 AbstractCegarLoop]: === Iteration 5 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:17,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1933852231, now seen corresponding path program 1 times [2018-01-24 12:16:17,418 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:17,418 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:17,419 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:17,419 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:17,420 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:17,434 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:17,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:16:17,549 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:17,549 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:17,556 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:17,583 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:16:17,657 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:17,658 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 6 [2018-01-24 12:16:17,658 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 12:16:17,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 12:16:17,659 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-01-24 12:16:17,659 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 7 states. [2018-01-24 12:16:17,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:17,756 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2018-01-24 12:16:17,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 12:16:17,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-01-24 12:16:17,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:17,757 INFO L225 Difference]: With dead ends: 68 [2018-01-24 12:16:17,758 INFO L226 Difference]: Without dead ends: 67 [2018-01-24 12:16:17,758 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-01-24 12:16:17,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-01-24 12:16:17,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 57. [2018-01-24 12:16:17,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-01-24 12:16:17,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2018-01-24 12:16:17,765 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 22 [2018-01-24 12:16:17,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:17,766 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2018-01-24 12:16:17,766 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 12:16:17,766 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2018-01-24 12:16:17,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 12:16:17,767 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:17,767 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] [2018-01-24 12:16:17,767 INFO L371 AbstractCegarLoop]: === Iteration 6 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:17,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1974903447, now seen corresponding path program 1 times [2018-01-24 12:16:17,768 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:17,768 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:17,769 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:17,769 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:17,770 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:17,779 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:17,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:16:17,824 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:17,824 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:17,829 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:17,857 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:17,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:16:17,988 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-24 12:16:17,988 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2018-01-24 12:16:17,989 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 12:16:17,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 12:16:17,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-24 12:16:17,990 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 8 states. [2018-01-24 12:16:18,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:18,182 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2018-01-24 12:16:18,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 12:16:18,182 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-01-24 12:16:18,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:18,183 INFO L225 Difference]: With dead ends: 120 [2018-01-24 12:16:18,183 INFO L226 Difference]: Without dead ends: 71 [2018-01-24 12:16:18,184 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-01-24 12:16:18,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-01-24 12:16:18,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2018-01-24 12:16:18,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-01-24 12:16:18,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2018-01-24 12:16:18,192 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 23 [2018-01-24 12:16:18,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:18,193 INFO L432 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2018-01-24 12:16:18,193 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 12:16:18,193 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2018-01-24 12:16:18,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 12:16:18,195 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:18,195 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:18,196 INFO L371 AbstractCegarLoop]: === Iteration 7 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:18,196 INFO L82 PathProgramCache]: Analyzing trace with hash 180123030, now seen corresponding path program 1 times [2018-01-24 12:16:18,197 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:18,197 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:18,198 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:18,198 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:18,198 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:18,214 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:16:18,344 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:18,344 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:18,351 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:18,365 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:18,388 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:16:18,390 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:16:18,395 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:16:18,395 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 12:16:18,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:16:18,449 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:18,450 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-01-24 12:16:18,450 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 12:16:18,450 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 12:16:18,450 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 12:16:18,450 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand 6 states. [2018-01-24 12:16:18,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:18,576 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2018-01-24 12:16:18,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 12:16:18,598 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-01-24 12:16:18,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:18,599 INFO L225 Difference]: With dead ends: 71 [2018-01-24 12:16:18,599 INFO L226 Difference]: Without dead ends: 70 [2018-01-24 12:16:18,599 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-24 12:16:18,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-01-24 12:16:18,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2018-01-24 12:16:18,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-01-24 12:16:18,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2018-01-24 12:16:18,608 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 23 [2018-01-24 12:16:18,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:18,608 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2018-01-24 12:16:18,608 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 12:16:18,608 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2018-01-24 12:16:18,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-24 12:16:18,609 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:18,609 INFO L322 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:18,609 INFO L371 AbstractCegarLoop]: === Iteration 8 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:18,610 INFO L82 PathProgramCache]: Analyzing trace with hash -280350351, now seen corresponding path program 2 times [2018-01-24 12:16:18,610 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:18,610 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:18,611 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:18,611 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:18,611 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:18,623 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:18,740 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:16:18,740 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:18,740 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:18,748 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 12:16:18,759 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:18,762 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:18,763 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:18,765 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:18,891 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:16:18,912 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-24 12:16:18,912 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2018-01-24 12:16:18,912 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-24 12:16:18,912 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-24 12:16:18,913 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-01-24 12:16:18,913 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 15 states. [2018-01-24 12:16:19,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:19,168 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2018-01-24 12:16:19,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-24 12:16:19,169 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-01-24 12:16:19,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:19,170 INFO L225 Difference]: With dead ends: 144 [2018-01-24 12:16:19,171 INFO L226 Difference]: Without dead ends: 91 [2018-01-24 12:16:19,171 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2018-01-24 12:16:19,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-01-24 12:16:19,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 83. [2018-01-24 12:16:19,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-24 12:16:19,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2018-01-24 12:16:19,180 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 28 [2018-01-24 12:16:19,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:19,180 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2018-01-24 12:16:19,180 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-24 12:16:19,181 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2018-01-24 12:16:19,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-01-24 12:16:19,182 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:19,182 INFO L322 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:19,182 INFO L371 AbstractCegarLoop]: === Iteration 9 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:19,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1033895800, now seen corresponding path program 1 times [2018-01-24 12:16:19,183 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:19,183 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:19,184 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:19,184 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:19,184 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:19,200 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:16:19,415 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:19,415 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:19,428 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:19,455 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:19,513 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-01-24 12:16:19,535 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:19,535 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6] total 17 [2018-01-24 12:16:19,535 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-24 12:16:19,535 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-24 12:16:19,536 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2018-01-24 12:16:19,536 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand 17 states. [2018-01-24 12:16:19,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:19,788 INFO L93 Difference]: Finished difference Result 147 states and 158 transitions. [2018-01-24 12:16:19,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 12:16:19,788 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2018-01-24 12:16:19,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:19,789 INFO L225 Difference]: With dead ends: 147 [2018-01-24 12:16:19,789 INFO L226 Difference]: Without dead ends: 88 [2018-01-24 12:16:19,790 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2018-01-24 12:16:19,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-01-24 12:16:19,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2018-01-24 12:16:19,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-24 12:16:19,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2018-01-24 12:16:19,796 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 46 [2018-01-24 12:16:19,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:19,797 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2018-01-24 12:16:19,797 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-24 12:16:19,797 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2018-01-24 12:16:19,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-01-24 12:16:19,798 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:19,798 INFO L322 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:19,798 INFO L371 AbstractCegarLoop]: === Iteration 10 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:19,798 INFO L82 PathProgramCache]: Analyzing trace with hash -821508032, now seen corresponding path program 2 times [2018-01-24 12:16:19,798 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:19,798 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:19,799 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:19,799 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:19,799 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:19,816 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:19,927 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 37 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-01-24 12:16:19,927 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:19,927 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:19,934 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 12:16:19,943 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:19,951 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:19,953 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:19,956 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:19,982 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-01-24 12:16:20,002 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:20,003 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2018-01-24 12:16:20,003 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-24 12:16:20,003 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-24 12:16:20,003 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-01-24 12:16:20,003 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 13 states. [2018-01-24 12:16:20,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:20,209 INFO L93 Difference]: Finished difference Result 142 states and 152 transitions. [2018-01-24 12:16:20,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 12:16:20,210 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2018-01-24 12:16:20,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:20,212 INFO L225 Difference]: With dead ends: 142 [2018-01-24 12:16:20,213 INFO L226 Difference]: Without dead ends: 141 [2018-01-24 12:16:20,213 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-01-24 12:16:20,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-01-24 12:16:20,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 110. [2018-01-24 12:16:20,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-01-24 12:16:20,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 117 transitions. [2018-01-24 12:16:20,232 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 117 transitions. Word has length 52 [2018-01-24 12:16:20,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:20,233 INFO L432 AbstractCegarLoop]: Abstraction has 110 states and 117 transitions. [2018-01-24 12:16:20,233 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-24 12:16:20,233 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 117 transitions. [2018-01-24 12:16:20,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-01-24 12:16:20,234 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:20,234 INFO L322 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:20,235 INFO L371 AbstractCegarLoop]: === Iteration 11 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:20,235 INFO L82 PathProgramCache]: Analyzing trace with hash 303054831, now seen corresponding path program 1 times [2018-01-24 12:16:20,235 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:20,235 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:20,236 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:20,236 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:20,236 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:20,250 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:20,452 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 45 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-01-24 12:16:20,453 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:20,453 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:20,459 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:20,485 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:20,502 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:16:20,503 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:16:20,523 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:16:20,524 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 12:16:20,665 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 39 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-01-24 12:16:20,699 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:20,699 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2018-01-24 12:16:20,700 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-24 12:16:20,700 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-24 12:16:20,700 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2018-01-24 12:16:20,700 INFO L87 Difference]: Start difference. First operand 110 states and 117 transitions. Second operand 15 states. [2018-01-24 12:16:21,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:21,277 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2018-01-24 12:16:21,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-24 12:16:21,277 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2018-01-24 12:16:21,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:21,279 INFO L225 Difference]: With dead ends: 139 [2018-01-24 12:16:21,279 INFO L226 Difference]: Without dead ends: 138 [2018-01-24 12:16:21,280 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2018-01-24 12:16:21,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-01-24 12:16:21,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 109. [2018-01-24 12:16:21,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-24 12:16:21,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 115 transitions. [2018-01-24 12:16:21,291 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 115 transitions. Word has length 53 [2018-01-24 12:16:21,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:21,292 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 115 transitions. [2018-01-24 12:16:21,292 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-24 12:16:21,292 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 115 transitions. [2018-01-24 12:16:21,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-01-24 12:16:21,293 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:21,293 INFO L322 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 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] [2018-01-24 12:16:21,293 INFO L371 AbstractCegarLoop]: === Iteration 12 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:21,294 INFO L82 PathProgramCache]: Analyzing trace with hash -81663113, now seen corresponding path program 1 times [2018-01-24 12:16:21,294 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:21,294 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:21,295 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:21,295 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:21,295 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:21,309 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:21,513 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 37 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-01-24 12:16:21,514 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:21,514 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP 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 [2018-01-24 12:16:21,519 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:21,537 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:21,647 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 47 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-01-24 12:16:21,668 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:21,668 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2018-01-24 12:16:21,668 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-24 12:16:21,668 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-24 12:16:21,669 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2018-01-24 12:16:21,669 INFO L87 Difference]: Start difference. First operand 109 states and 115 transitions. Second operand 16 states. [2018-01-24 12:16:22,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:22,031 INFO L93 Difference]: Finished difference Result 177 states and 189 transitions. [2018-01-24 12:16:22,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-24 12:16:22,031 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 67 [2018-01-24 12:16:22,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:22,032 INFO L225 Difference]: With dead ends: 177 [2018-01-24 12:16:22,032 INFO L226 Difference]: Without dead ends: 116 [2018-01-24 12:16:22,033 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=681, Unknown=0, NotChecked=0, Total=870 [2018-01-24 12:16:22,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-01-24 12:16:22,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 94. [2018-01-24 12:16:22,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-01-24 12:16:22,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 96 transitions. [2018-01-24 12:16:22,042 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 96 transitions. Word has length 67 [2018-01-24 12:16:22,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:22,043 INFO L432 AbstractCegarLoop]: Abstraction has 94 states and 96 transitions. [2018-01-24 12:16:22,043 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-24 12:16:22,043 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 96 transitions. [2018-01-24 12:16:22,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-01-24 12:16:22,044 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:22,045 INFO L322 BasicCegarLoop]: trace histogram [11, 9, 8, 8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:22,045 INFO L371 AbstractCegarLoop]: === Iteration 13 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:22,045 INFO L82 PathProgramCache]: Analyzing trace with hash -85555777, now seen corresponding path program 3 times [2018-01-24 12:16:22,045 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:22,045 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:22,046 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:22,046 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:22,046 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:22,064 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 123 proven. 27 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-01-24 12:16:22,189 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:22,189 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:22,199 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-24 12:16:22,210 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:22,214 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:22,220 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:22,221 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:22,224 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:22,357 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 123 proven. 27 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-01-24 12:16:22,379 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:22,379 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-01-24 12:16:22,379 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-24 12:16:22,380 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-24 12:16:22,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-01-24 12:16:22,380 INFO L87 Difference]: Start difference. First operand 94 states and 96 transitions. Second operand 17 states. [2018-01-24 12:16:22,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:22,559 INFO L93 Difference]: Finished difference Result 130 states and 133 transitions. [2018-01-24 12:16:22,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 12:16:22,559 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 88 [2018-01-24 12:16:22,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:22,561 INFO L225 Difference]: With dead ends: 130 [2018-01-24 12:16:22,561 INFO L226 Difference]: Without dead ends: 129 [2018-01-24 12:16:22,561 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-01-24 12:16:22,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-01-24 12:16:22,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 126. [2018-01-24 12:16:22,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-01-24 12:16:22,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 130 transitions. [2018-01-24 12:16:22,573 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 130 transitions. Word has length 88 [2018-01-24 12:16:22,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:22,573 INFO L432 AbstractCegarLoop]: Abstraction has 126 states and 130 transitions. [2018-01-24 12:16:22,573 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-24 12:16:22,573 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 130 transitions. [2018-01-24 12:16:22,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-01-24 12:16:22,575 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:22,575 INFO L322 BasicCegarLoop]: trace histogram [11, 9, 9, 8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:22,575 INFO L371 AbstractCegarLoop]: === Iteration 14 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:22,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1642738256, now seen corresponding path program 2 times [2018-01-24 12:16:22,575 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:22,576 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:22,576 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:22,576 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:22,577 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:22,593 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:22,834 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 138 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-01-24 12:16:22,835 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:22,835 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP 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 [2018-01-24 12:16:22,842 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 12:16:22,854 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:22,871 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:22,875 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:22,879 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:22,884 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:16:22,885 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:16:22,889 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:16:22,889 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 12:16:23,032 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 128 proven. 30 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-01-24 12:16:23,056 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:23,056 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2018-01-24 12:16:23,056 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-24 12:16:23,056 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-24 12:16:23,056 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-01-24 12:16:23,057 INFO L87 Difference]: Start difference. First operand 126 states and 130 transitions. Second operand 17 states. [2018-01-24 12:16:23,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:23,396 INFO L93 Difference]: Finished difference Result 165 states and 173 transitions. [2018-01-24 12:16:23,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-24 12:16:23,396 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 89 [2018-01-24 12:16:23,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:23,397 INFO L225 Difference]: With dead ends: 165 [2018-01-24 12:16:23,397 INFO L226 Difference]: Without dead ends: 163 [2018-01-24 12:16:23,398 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2018-01-24 12:16:23,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-01-24 12:16:23,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 130. [2018-01-24 12:16:23,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-01-24 12:16:23,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2018-01-24 12:16:23,406 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 89 [2018-01-24 12:16:23,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:23,406 INFO L432 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2018-01-24 12:16:23,406 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-24 12:16:23,407 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2018-01-24 12:16:23,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-01-24 12:16:23,408 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:23,408 INFO L322 BasicCegarLoop]: trace histogram [16, 13, 12, 12, 12, 12, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:23,408 INFO L371 AbstractCegarLoop]: === Iteration 15 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:23,408 INFO L82 PathProgramCache]: Analyzing trace with hash 347418750, now seen corresponding path program 4 times [2018-01-24 12:16:23,408 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:23,408 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:23,409 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:23,409 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:23,409 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:23,426 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:23,718 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 321 proven. 138 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-01-24 12:16:23,718 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:23,718 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:23,723 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-24 12:16:23,760 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:23,765 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:23,886 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 401 proven. 24 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-01-24 12:16:23,921 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:23,922 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10] total 25 [2018-01-24 12:16:23,922 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-24 12:16:23,923 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-24 12:16:23,923 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2018-01-24 12:16:23,923 INFO L87 Difference]: Start difference. First operand 130 states and 134 transitions. Second operand 25 states. [2018-01-24 12:16:24,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:24,628 INFO L93 Difference]: Finished difference Result 277 states and 290 transitions. [2018-01-24 12:16:24,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-01-24 12:16:24,628 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 124 [2018-01-24 12:16:24,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:24,629 INFO L225 Difference]: With dead ends: 277 [2018-01-24 12:16:24,629 INFO L226 Difference]: Without dead ends: 189 [2018-01-24 12:16:24,631 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=281, Invalid=1441, Unknown=0, NotChecked=0, Total=1722 [2018-01-24 12:16:24,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-01-24 12:16:24,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 181. [2018-01-24 12:16:24,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-24 12:16:24,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 184 transitions. [2018-01-24 12:16:24,642 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 184 transitions. Word has length 124 [2018-01-24 12:16:24,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:24,643 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 184 transitions. [2018-01-24 12:16:24,643 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-24 12:16:24,643 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 184 transitions. [2018-01-24 12:16:24,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-01-24 12:16:24,644 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:24,644 INFO L322 BasicCegarLoop]: trace histogram [17, 14, 13, 13, 13, 13, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:24,644 INFO L371 AbstractCegarLoop]: === Iteration 16 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:24,644 INFO L82 PathProgramCache]: Analyzing trace with hash 714000310, now seen corresponding path program 5 times [2018-01-24 12:16:24,644 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:24,644 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:24,645 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:24,645 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:24,645 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:24,660 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:24,831 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 276 proven. 48 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2018-01-24 12:16:24,831 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:24,831 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP 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 [2018-01-24 12:16:24,841 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-24 12:16:24,852 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:24,855 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:24,860 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:24,865 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:24,869 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:24,874 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:24,876 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:24,879 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:24,919 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 273 proven. 48 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-01-24 12:16:24,940 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:24,940 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 16 [2018-01-24 12:16:24,940 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-24 12:16:24,941 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-24 12:16:24,941 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2018-01-24 12:16:24,941 INFO L87 Difference]: Start difference. First operand 181 states and 184 transitions. Second operand 17 states. [2018-01-24 12:16:25,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:25,202 INFO L93 Difference]: Finished difference Result 260 states and 269 transitions. [2018-01-24 12:16:25,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-24 12:16:25,203 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 130 [2018-01-24 12:16:25,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:25,204 INFO L225 Difference]: With dead ends: 260 [2018-01-24 12:16:25,204 INFO L226 Difference]: Without dead ends: 259 [2018-01-24 12:16:25,204 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2018-01-24 12:16:25,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-01-24 12:16:25,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 224. [2018-01-24 12:16:25,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-01-24 12:16:25,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 230 transitions. [2018-01-24 12:16:25,220 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 230 transitions. Word has length 130 [2018-01-24 12:16:25,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:25,220 INFO L432 AbstractCegarLoop]: Abstraction has 224 states and 230 transitions. [2018-01-24 12:16:25,220 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-24 12:16:25,220 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 230 transitions. [2018-01-24 12:16:25,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-01-24 12:16:25,221 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:25,221 INFO L322 BasicCegarLoop]: trace histogram [17, 14, 14, 13, 13, 13, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:25,221 INFO L371 AbstractCegarLoop]: === Iteration 17 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:25,222 INFO L82 PathProgramCache]: Analyzing trace with hash 659173177, now seen corresponding path program 3 times [2018-01-24 12:16:25,222 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:25,222 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:25,223 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:25,223 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:25,223 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:25,244 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:25,515 INFO L134 CoverageAnalysis]: Checked inductivity of 655 backedges. 299 proven. 38 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2018-01-24 12:16:25,516 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:25,516 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:25,524 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-24 12:16:25,536 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:25,539 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:25,543 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:25,548 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:25,550 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:25,552 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:25,555 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:16:25,555 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:16:25,558 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:16:25,558 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 12:16:25,795 INFO L134 CoverageAnalysis]: Checked inductivity of 655 backedges. 299 proven. 38 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2018-01-24 12:16:25,820 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:25,820 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2018-01-24 12:16:25,820 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-24 12:16:25,820 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-24 12:16:25,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2018-01-24 12:16:25,821 INFO L87 Difference]: Start difference. First operand 224 states and 230 transitions. Second operand 23 states. [2018-01-24 12:16:25,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:25,981 INFO L93 Difference]: Finished difference Result 227 states and 232 transitions. [2018-01-24 12:16:25,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-24 12:16:25,981 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 131 [2018-01-24 12:16:25,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:25,982 INFO L225 Difference]: With dead ends: 227 [2018-01-24 12:16:25,983 INFO L226 Difference]: Without dead ends: 226 [2018-01-24 12:16:25,983 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 115 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2018-01-24 12:16:25,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-01-24 12:16:25,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 222. [2018-01-24 12:16:25,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-01-24 12:16:25,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 227 transitions. [2018-01-24 12:16:25,997 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 227 transitions. Word has length 131 [2018-01-24 12:16:25,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:25,997 INFO L432 AbstractCegarLoop]: Abstraction has 222 states and 227 transitions. [2018-01-24 12:16:25,997 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-24 12:16:25,997 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 227 transitions. [2018-01-24 12:16:25,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-01-24 12:16:25,998 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:25,998 INFO L322 BasicCegarLoop]: trace histogram [22, 18, 18, 17, 17, 17, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:25,998 INFO L371 AbstractCegarLoop]: === Iteration 18 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:25,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1539464154, now seen corresponding path program 4 times [2018-01-24 12:16:25,998 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:25,998 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:25,999 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:25,999 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:25,999 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:26,017 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:26,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 656 proven. 247 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2018-01-24 12:16:26,273 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:26,273 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP 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 [2018-01-24 12:16:26,278 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-24 12:16:26,311 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:26,314 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:26,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 733 proven. 44 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-01-24 12:16:26,424 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:26,424 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12] total 23 [2018-01-24 12:16:26,424 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-24 12:16:26,424 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-24 12:16:26,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2018-01-24 12:16:26,425 INFO L87 Difference]: Start difference. First operand 222 states and 227 transitions. Second operand 23 states. [2018-01-24 12:16:26,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:26,814 INFO L93 Difference]: Finished difference Result 300 states and 309 transitions. [2018-01-24 12:16:26,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-24 12:16:26,815 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 167 [2018-01-24 12:16:26,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:26,817 INFO L225 Difference]: With dead ends: 300 [2018-01-24 12:16:26,817 INFO L226 Difference]: Without dead ends: 249 [2018-01-24 12:16:26,818 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=247, Invalid=1013, Unknown=0, NotChecked=0, Total=1260 [2018-01-24 12:16:26,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-01-24 12:16:26,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 228. [2018-01-24 12:16:26,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-01-24 12:16:26,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 232 transitions. [2018-01-24 12:16:26,836 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 232 transitions. Word has length 167 [2018-01-24 12:16:26,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:26,837 INFO L432 AbstractCegarLoop]: Abstraction has 228 states and 232 transitions. [2018-01-24 12:16:26,837 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-24 12:16:26,837 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 232 transitions. [2018-01-24 12:16:26,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-01-24 12:16:26,838 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:26,838 INFO L322 BasicCegarLoop]: trace histogram [23, 19, 19, 18, 18, 18, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:26,839 INFO L371 AbstractCegarLoop]: === Iteration 19 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:26,839 INFO L82 PathProgramCache]: Analyzing trace with hash -679675678, now seen corresponding path program 5 times [2018-01-24 12:16:26,839 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:26,839 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:26,840 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:26,840 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:26,840 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:26,865 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 436 proven. 52 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2018-01-24 12:16:27,130 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:27,130 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:27,134 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-24 12:16:27,146 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:27,150 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:27,156 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:27,161 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:27,167 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:27,172 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:27,178 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:27,180 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:27,183 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:27,185 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:16:27,186 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:16:27,188 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:16:27,189 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 12:16:27,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 436 proven. 52 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2018-01-24 12:16:27,368 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:27,368 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2018-01-24 12:16:27,368 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-24 12:16:27,368 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-24 12:16:27,368 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2018-01-24 12:16:27,369 INFO L87 Difference]: Start difference. First operand 228 states and 232 transitions. Second operand 15 states. [2018-01-24 12:16:27,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:27,529 INFO L93 Difference]: Finished difference Result 249 states and 254 transitions. [2018-01-24 12:16:27,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 12:16:27,529 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 173 [2018-01-24 12:16:27,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:27,530 INFO L225 Difference]: With dead ends: 249 [2018-01-24 12:16:27,530 INFO L226 Difference]: Without dead ends: 248 [2018-01-24 12:16:27,531 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 159 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2018-01-24 12:16:27,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-01-24 12:16:27,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 229. [2018-01-24 12:16:27,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-01-24 12:16:27,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2018-01-24 12:16:27,544 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 173 [2018-01-24 12:16:27,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:27,545 INFO L432 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2018-01-24 12:16:27,545 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-24 12:16:27,545 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2018-01-24 12:16:27,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-01-24 12:16:27,546 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:27,546 INFO L322 BasicCegarLoop]: trace histogram [24, 20, 19, 19, 19, 19, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:27,546 INFO L371 AbstractCegarLoop]: === Iteration 20 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:27,546 INFO L82 PathProgramCache]: Analyzing trace with hash 655613349, now seen corresponding path program 6 times [2018-01-24 12:16:27,546 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:27,546 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:27,547 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:27,547 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:27,547 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:27,572 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:27,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 514 proven. 75 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2018-01-24 12:16:27,851 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:27,851 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:27,858 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-24 12:16:27,877 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:27,882 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:27,888 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:27,896 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:27,903 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:27,911 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:27,918 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:27,920 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:27,925 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:28,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 558 proven. 360 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2018-01-24 12:16:28,115 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:28,115 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 24 [2018-01-24 12:16:28,116 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-24 12:16:28,116 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-24 12:16:28,116 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2018-01-24 12:16:28,117 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand 25 states. [2018-01-24 12:16:28,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:28,545 INFO L93 Difference]: Finished difference Result 313 states and 322 transitions. [2018-01-24 12:16:28,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-01-24 12:16:28,545 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 178 [2018-01-24 12:16:28,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:28,547 INFO L225 Difference]: With dead ends: 313 [2018-01-24 12:16:28,547 INFO L226 Difference]: Without dead ends: 312 [2018-01-24 12:16:28,548 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2018-01-24 12:16:28,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-01-24 12:16:28,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 273. [2018-01-24 12:16:28,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-01-24 12:16:28,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 279 transitions. [2018-01-24 12:16:28,576 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 279 transitions. Word has length 178 [2018-01-24 12:16:28,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:28,577 INFO L432 AbstractCegarLoop]: Abstraction has 273 states and 279 transitions. [2018-01-24 12:16:28,577 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-24 12:16:28,577 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 279 transitions. [2018-01-24 12:16:28,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-01-24 12:16:28,579 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:28,579 INFO L322 BasicCegarLoop]: trace histogram [24, 20, 20, 19, 19, 19, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:28,579 INFO L371 AbstractCegarLoop]: === Iteration 21 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:28,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1150822614, now seen corresponding path program 6 times [2018-01-24 12:16:28,579 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:28,580 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:28,580 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:28,581 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:28,581 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:28,615 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:28,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1354 backedges. 546 proven. 62 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2018-01-24 12:16:28,948 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:28,948 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:28,955 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-24 12:16:28,969 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:28,973 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:28,978 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:28,984 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:28,990 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:28,999 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:29,010 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:29,012 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:29,017 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:29,021 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:16:29,022 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:16:29,025 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:16:29,025 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 12:16:29,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1354 backedges. 586 proven. 351 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2018-01-24 12:16:29,422 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:29,422 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 28 [2018-01-24 12:16:29,423 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-24 12:16:29,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-24 12:16:29,423 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2018-01-24 12:16:29,423 INFO L87 Difference]: Start difference. First operand 273 states and 279 transitions. Second operand 29 states. [2018-01-24 12:16:30,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:30,123 INFO L93 Difference]: Finished difference Result 312 states and 321 transitions. [2018-01-24 12:16:30,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-24 12:16:30,123 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 179 [2018-01-24 12:16:30,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:30,125 INFO L225 Difference]: With dead ends: 312 [2018-01-24 12:16:30,125 INFO L226 Difference]: Without dead ends: 311 [2018-01-24 12:16:30,126 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 157 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=416, Invalid=1476, Unknown=0, NotChecked=0, Total=1892 [2018-01-24 12:16:30,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-01-24 12:16:30,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 271. [2018-01-24 12:16:30,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-01-24 12:16:30,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 276 transitions. [2018-01-24 12:16:30,146 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 276 transitions. Word has length 179 [2018-01-24 12:16:30,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:30,146 INFO L432 AbstractCegarLoop]: Abstraction has 271 states and 276 transitions. [2018-01-24 12:16:30,146 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-24 12:16:30,146 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 276 transitions. [2018-01-24 12:16:30,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-01-24 12:16:30,147 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:30,148 INFO L322 BasicCegarLoop]: trace histogram [30, 25, 24, 24, 24, 24, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:30,148 INFO L371 AbstractCegarLoop]: === Iteration 22 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:30,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1417597148, now seen corresponding path program 7 times [2018-01-24 12:16:30,148 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:30,148 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:30,149 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:30,149 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:30,149 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:30,176 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:30,583 WARN L146 SmtUtils]: Spent 100ms on a formula simplification. DAG size of input: 17 DAG size of output 16 [2018-01-24 12:16:30,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2123 backedges. 1185 proven. 370 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2018-01-24 12:16:30,763 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:30,763 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:30,768 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:30,814 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:30,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2123 backedges. 1280 proven. 70 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2018-01-24 12:16:30,950 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:30,950 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14] total 26 [2018-01-24 12:16:30,950 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-01-24 12:16:30,950 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-01-24 12:16:30,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2018-01-24 12:16:30,951 INFO L87 Difference]: Start difference. First operand 271 states and 276 transitions. Second operand 26 states. [2018-01-24 12:16:31,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:31,482 INFO L93 Difference]: Finished difference Result 378 states and 389 transitions. [2018-01-24 12:16:31,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-24 12:16:31,484 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 220 [2018-01-24 12:16:31,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:31,487 INFO L225 Difference]: With dead ends: 378 [2018-01-24 12:16:31,487 INFO L226 Difference]: Without dead ends: 326 [2018-01-24 12:16:31,488 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=358, Invalid=1448, Unknown=0, NotChecked=0, Total=1806 [2018-01-24 12:16:31,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2018-01-24 12:16:31,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 281. [2018-01-24 12:16:31,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-01-24 12:16:31,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 286 transitions. [2018-01-24 12:16:31,514 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 286 transitions. Word has length 220 [2018-01-24 12:16:31,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:31,515 INFO L432 AbstractCegarLoop]: Abstraction has 281 states and 286 transitions. [2018-01-24 12:16:31,515 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-01-24 12:16:31,515 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 286 transitions. [2018-01-24 12:16:31,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-01-24 12:16:31,517 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:31,517 INFO L322 BasicCegarLoop]: trace histogram [31, 26, 25, 25, 25, 25, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:31,517 INFO L371 AbstractCegarLoop]: === Iteration 23 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:31,517 INFO L82 PathProgramCache]: Analyzing trace with hash 11647380, now seen corresponding path program 8 times [2018-01-24 12:16:31,517 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:31,517 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:31,518 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:31,518 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:31,518 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:31,542 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 725 proven. 75 refuted. 0 times theorem prover too weak. 1480 trivial. 0 not checked. [2018-01-24 12:16:31,809 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:31,809 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:31,820 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 12:16:31,841 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:31,880 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:31,889 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:31,896 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:32,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 720 proven. 75 refuted. 0 times theorem prover too weak. 1485 trivial. 0 not checked. [2018-01-24 12:16:32,040 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:32,040 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 16 [2018-01-24 12:16:32,041 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-24 12:16:32,041 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-24 12:16:32,041 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2018-01-24 12:16:32,041 INFO L87 Difference]: Start difference. First operand 281 states and 286 transitions. Second operand 17 states. [2018-01-24 12:16:32,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:32,304 INFO L93 Difference]: Finished difference Result 326 states and 334 transitions. [2018-01-24 12:16:32,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 12:16:32,304 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 226 [2018-01-24 12:16:32,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:32,306 INFO L225 Difference]: With dead ends: 326 [2018-01-24 12:16:32,306 INFO L226 Difference]: Without dead ends: 325 [2018-01-24 12:16:32,306 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2018-01-24 12:16:32,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-01-24 12:16:32,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 282. [2018-01-24 12:16:32,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2018-01-24 12:16:32,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 287 transitions. [2018-01-24 12:16:32,323 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 287 transitions. Word has length 226 [2018-01-24 12:16:32,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:32,324 INFO L432 AbstractCegarLoop]: Abstraction has 282 states and 287 transitions. [2018-01-24 12:16:32,324 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-24 12:16:32,324 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 287 transitions. [2018-01-24 12:16:32,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-01-24 12:16:32,325 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:32,325 INFO L322 BasicCegarLoop]: trace histogram [31, 26, 26, 25, 25, 25, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:32,325 INFO L371 AbstractCegarLoop]: === Iteration 24 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:32,325 INFO L82 PathProgramCache]: Analyzing trace with hash 361068827, now seen corresponding path program 7 times [2018-01-24 12:16:32,325 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:32,326 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:32,326 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:32,326 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:32,326 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:32,345 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:32,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2305 backedges. 745 proven. 80 refuted. 0 times theorem prover too weak. 1480 trivial. 0 not checked. [2018-01-24 12:16:32,739 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:32,739 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:32,744 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:32,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:32,792 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:32,794 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:16:32,795 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:16:32,813 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:16:32,814 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 12:16:33,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2305 backedges. 745 proven. 80 refuted. 0 times theorem prover too weak. 1480 trivial. 0 not checked. [2018-01-24 12:16:33,114 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:33,115 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-01-24 12:16:33,115 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-24 12:16:33,115 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-24 12:16:33,115 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2018-01-24 12:16:33,115 INFO L87 Difference]: Start difference. First operand 282 states and 287 transitions. Second operand 17 states. [2018-01-24 12:16:33,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:33,441 INFO L93 Difference]: Finished difference Result 325 states and 333 transitions. [2018-01-24 12:16:33,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 12:16:33,441 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 227 [2018-01-24 12:16:33,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:33,443 INFO L225 Difference]: With dead ends: 325 [2018-01-24 12:16:33,443 INFO L226 Difference]: Without dead ends: 324 [2018-01-24 12:16:33,444 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 210 SyntacticMatches, 11 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2018-01-24 12:16:33,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-01-24 12:16:33,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 283. [2018-01-24 12:16:33,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-01-24 12:16:33,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 288 transitions. [2018-01-24 12:16:33,472 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 288 transitions. Word has length 227 [2018-01-24 12:16:33,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:33,473 INFO L432 AbstractCegarLoop]: Abstraction has 283 states and 288 transitions. [2018-01-24 12:16:33,473 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-24 12:16:33,473 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 288 transitions. [2018-01-24 12:16:33,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-01-24 12:16:33,474 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:33,475 INFO L322 BasicCegarLoop]: trace histogram [32, 27, 26, 26, 26, 26, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:33,475 INFO L371 AbstractCegarLoop]: === Iteration 25 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:33,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1000315148, now seen corresponding path program 9 times [2018-01-24 12:16:33,475 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:33,475 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:33,476 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:33,476 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:33,476 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:33,501 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:34,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2443 backedges. 783 proven. 478 refuted. 0 times theorem prover too weak. 1182 trivial. 0 not checked. [2018-01-24 12:16:34,017 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:34,017 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:34,025 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-24 12:16:34,046 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:34,052 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:34,059 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:34,068 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:34,079 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:34,093 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:34,096 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:34,103 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:34,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2443 backedges. 855 proven. 108 refuted. 0 times theorem prover too weak. 1480 trivial. 0 not checked. [2018-01-24 12:16:34,319 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:34,319 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 26 [2018-01-24 12:16:34,320 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-24 12:16:34,320 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-24 12:16:34,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2018-01-24 12:16:34,321 INFO L87 Difference]: Start difference. First operand 283 states and 288 transitions. Second operand 27 states. [2018-01-24 12:16:34,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:34,665 INFO L93 Difference]: Finished difference Result 337 states and 343 transitions. [2018-01-24 12:16:34,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-01-24 12:16:34,665 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 232 [2018-01-24 12:16:34,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:34,667 INFO L225 Difference]: With dead ends: 337 [2018-01-24 12:16:34,667 INFO L226 Difference]: Without dead ends: 336 [2018-01-24 12:16:34,667 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=1156, Unknown=0, NotChecked=0, Total=1406 [2018-01-24 12:16:34,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-01-24 12:16:34,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 333. [2018-01-24 12:16:34,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-01-24 12:16:34,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 340 transitions. [2018-01-24 12:16:34,687 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 340 transitions. Word has length 232 [2018-01-24 12:16:34,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:34,687 INFO L432 AbstractCegarLoop]: Abstraction has 333 states and 340 transitions. [2018-01-24 12:16:34,687 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-24 12:16:34,687 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 340 transitions. [2018-01-24 12:16:34,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-01-24 12:16:34,688 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:34,688 INFO L322 BasicCegarLoop]: trace histogram [32, 27, 27, 26, 26, 26, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:34,689 INFO L371 AbstractCegarLoop]: === Iteration 26 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:34,689 INFO L82 PathProgramCache]: Analyzing trace with hash 944998563, now seen corresponding path program 8 times [2018-01-24 12:16:34,689 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:34,689 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:34,689 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:34,689 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:34,690 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:34,709 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:35,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2469 backedges. 1271 proven. 368 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2018-01-24 12:16:35,548 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:35,548 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:35,553 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 12:16:35,567 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:35,593 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:35,598 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:35,603 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:35,606 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:16:35,607 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:16:35,621 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:16:35,622 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 12:16:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2469 backedges. 875 proven. 114 refuted. 0 times theorem prover too weak. 1480 trivial. 0 not checked. [2018-01-24 12:16:36,017 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:36,017 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 26 [2018-01-24 12:16:36,018 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-24 12:16:36,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-24 12:16:36,018 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2018-01-24 12:16:36,019 INFO L87 Difference]: Start difference. First operand 333 states and 340 transitions. Second operand 27 states. [2018-01-24 12:16:36,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:36,910 INFO L93 Difference]: Finished difference Result 661 states and 697 transitions. [2018-01-24 12:16:36,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-01-24 12:16:36,910 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 233 [2018-01-24 12:16:36,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:36,912 INFO L225 Difference]: With dead ends: 661 [2018-01-24 12:16:36,912 INFO L226 Difference]: Without dead ends: 659 [2018-01-24 12:16:36,913 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 215 SyntacticMatches, 9 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=446, Invalid=2104, Unknown=0, NotChecked=0, Total=2550 [2018-01-24 12:16:36,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2018-01-24 12:16:36,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 468. [2018-01-24 12:16:36,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2018-01-24 12:16:36,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 484 transitions. [2018-01-24 12:16:36,944 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 484 transitions. Word has length 233 [2018-01-24 12:16:36,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:36,945 INFO L432 AbstractCegarLoop]: Abstraction has 468 states and 484 transitions. [2018-01-24 12:16:36,945 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-24 12:16:36,945 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 484 transitions. [2018-01-24 12:16:36,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-01-24 12:16:36,946 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:36,946 INFO L322 BasicCegarLoop]: trace histogram [34, 29, 29, 28, 28, 28, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:36,946 INFO L371 AbstractCegarLoop]: === Iteration 27 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:36,946 INFO L82 PathProgramCache]: Analyzing trace with hash -108003725, now seen corresponding path program 9 times [2018-01-24 12:16:36,946 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:36,946 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:36,947 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:36,947 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:36,947 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:36,964 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:37,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2815 backedges. 1179 proven. 106 refuted. 0 times theorem prover too weak. 1530 trivial. 0 not checked. [2018-01-24 12:16:37,325 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:37,325 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:37,330 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-24 12:16:37,353 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:37,359 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:37,366 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:37,375 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:37,386 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:37,401 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:37,404 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:37,410 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:37,422 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:16:37,422 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:16:37,444 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:16:37,445 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 12:16:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2815 backedges. 1077 proven. 94 refuted. 0 times theorem prover too weak. 1644 trivial. 0 not checked. [2018-01-24 12:16:38,092 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:38,092 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14] total 32 [2018-01-24 12:16:38,093 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-01-24 12:16:38,093 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-01-24 12:16:38,094 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=846, Unknown=0, NotChecked=0, Total=992 [2018-01-24 12:16:38,094 INFO L87 Difference]: Start difference. First operand 468 states and 484 transitions. Second operand 32 states. [2018-01-24 12:16:38,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:38,764 INFO L93 Difference]: Finished difference Result 836 states and 875 transitions. [2018-01-24 12:16:38,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-24 12:16:38,764 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 245 [2018-01-24 12:16:38,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:38,768 INFO L225 Difference]: With dead ends: 836 [2018-01-24 12:16:38,809 INFO L226 Difference]: Without dead ends: 500 [2018-01-24 12:16:38,811 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 224 SyntacticMatches, 10 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1051 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=527, Invalid=2335, Unknown=0, NotChecked=0, Total=2862 [2018-01-24 12:16:38,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2018-01-24 12:16:38,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 439. [2018-01-24 12:16:38,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-01-24 12:16:38,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 452 transitions. [2018-01-24 12:16:38,841 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 452 transitions. Word has length 245 [2018-01-24 12:16:38,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:38,841 INFO L432 AbstractCegarLoop]: Abstraction has 439 states and 452 transitions. [2018-01-24 12:16:38,841 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-01-24 12:16:38,841 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 452 transitions. [2018-01-24 12:16:38,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-01-24 12:16:38,843 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:38,843 INFO L322 BasicCegarLoop]: trace histogram [41, 35, 34, 34, 34, 34, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:38,843 INFO L371 AbstractCegarLoop]: === Iteration 28 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:38,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1441975659, now seen corresponding path program 10 times [2018-01-24 12:16:38,843 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:38,843 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:38,844 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:38,844 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:38,844 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:38,866 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:39,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4098 backedges. 1317 proven. 147 refuted. 0 times theorem prover too weak. 2634 trivial. 0 not checked. [2018-01-24 12:16:39,466 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:39,466 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:39,474 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-24 12:16:39,550 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:39,554 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:39,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4098 backedges. 1311 proven. 147 refuted. 0 times theorem prover too weak. 2640 trivial. 0 not checked. [2018-01-24 12:16:39,773 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:39,773 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 22 [2018-01-24 12:16:39,773 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-24 12:16:39,774 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-24 12:16:39,774 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2018-01-24 12:16:39,774 INFO L87 Difference]: Start difference. First operand 439 states and 452 transitions. Second operand 23 states. [2018-01-24 12:16:40,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:40,323 INFO L93 Difference]: Finished difference Result 626 states and 650 transitions. [2018-01-24 12:16:40,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-01-24 12:16:40,324 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 292 [2018-01-24 12:16:40,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:40,326 INFO L225 Difference]: With dead ends: 626 [2018-01-24 12:16:40,326 INFO L226 Difference]: Without dead ends: 625 [2018-01-24 12:16:40,327 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=183, Invalid=1007, Unknown=0, NotChecked=0, Total=1190 [2018-01-24 12:16:40,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2018-01-24 12:16:40,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 557. [2018-01-24 12:16:40,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2018-01-24 12:16:40,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 577 transitions. [2018-01-24 12:16:40,386 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 577 transitions. Word has length 292 [2018-01-24 12:16:40,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:40,386 INFO L432 AbstractCegarLoop]: Abstraction has 557 states and 577 transitions. [2018-01-24 12:16:40,386 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-24 12:16:40,386 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 577 transitions. [2018-01-24 12:16:40,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-01-24 12:16:40,389 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:40,389 INFO L322 BasicCegarLoop]: trace histogram [41, 35, 35, 34, 34, 34, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:40,389 INFO L371 AbstractCegarLoop]: === Iteration 29 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:40,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1751572516, now seen corresponding path program 10 times [2018-01-24 12:16:40,389 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:40,390 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:40,390 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:40,390 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:40,390 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:40,421 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:40,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4132 backedges. 1370 proven. 128 refuted. 0 times theorem prover too weak. 2634 trivial. 0 not checked. [2018-01-24 12:16:40,978 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:40,978 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:40,985 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-24 12:16:41,055 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:41,060 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:41,062 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:16:41,062 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:16:41,065 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:16:41,065 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 12:16:41,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4132 backedges. 1260 proven. 663 refuted. 0 times theorem prover too weak. 2209 trivial. 0 not checked. [2018-01-24 12:16:41,528 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:41,528 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 27 [2018-01-24 12:16:41,529 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-24 12:16:41,529 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-24 12:16:41,529 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2018-01-24 12:16:41,529 INFO L87 Difference]: Start difference. First operand 557 states and 577 transitions. Second operand 28 states. [2018-01-24 12:16:42,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:42,388 INFO L93 Difference]: Finished difference Result 623 states and 647 transitions. [2018-01-24 12:16:42,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-01-24 12:16:42,388 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 293 [2018-01-24 12:16:42,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:42,390 INFO L225 Difference]: With dead ends: 623 [2018-01-24 12:16:42,390 INFO L226 Difference]: Without dead ends: 622 [2018-01-24 12:16:42,391 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 269 SyntacticMatches, 11 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=336, Invalid=1920, Unknown=0, NotChecked=0, Total=2256 [2018-01-24 12:16:42,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2018-01-24 12:16:42,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 499. [2018-01-24 12:16:42,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2018-01-24 12:16:42,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 515 transitions. [2018-01-24 12:16:42,444 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 515 transitions. Word has length 293 [2018-01-24 12:16:42,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:42,445 INFO L432 AbstractCegarLoop]: Abstraction has 499 states and 515 transitions. [2018-01-24 12:16:42,445 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-24 12:16:42,445 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 515 transitions. [2018-01-24 12:16:42,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-01-24 12:16:42,447 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:42,447 INFO L322 BasicCegarLoop]: trace histogram [49, 42, 41, 41, 41, 41, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:42,447 INFO L371 AbstractCegarLoop]: === Iteration 30 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:42,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1038583150, now seen corresponding path program 11 times [2018-01-24 12:16:42,448 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:42,448 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:42,449 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:42,449 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:42,449 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:42,479 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 5918 backedges. 2545 proven. 767 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2018-01-24 12:16:43,246 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:43,246 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:43,252 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-24 12:16:43,272 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:43,274 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:43,276 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:43,277 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:43,280 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:43,282 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:43,286 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:43,292 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:43,298 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:43,305 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:43,314 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:43,323 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:43,332 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:43,342 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:43,343 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:43,349 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:43,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5918 backedges. 3606 proven. 491 refuted. 0 times theorem prover too weak. 1821 trivial. 0 not checked. [2018-01-24 12:16:43,741 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:43,741 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 19] total 42 [2018-01-24 12:16:43,741 INFO L409 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-01-24 12:16:43,742 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-01-24 12:16:43,742 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1513, Unknown=0, NotChecked=0, Total=1722 [2018-01-24 12:16:43,742 INFO L87 Difference]: Start difference. First operand 499 states and 515 transitions. Second operand 42 states. [2018-01-24 12:16:45,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:45,003 INFO L93 Difference]: Finished difference Result 849 states and 883 transitions. [2018-01-24 12:16:45,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-01-24 12:16:45,003 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 346 [2018-01-24 12:16:45,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:45,005 INFO L225 Difference]: With dead ends: 849 [2018-01-24 12:16:45,005 INFO L226 Difference]: Without dead ends: 656 [2018-01-24 12:16:45,007 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2228 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1040, Invalid=6270, Unknown=0, NotChecked=0, Total=7310 [2018-01-24 12:16:45,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2018-01-24 12:16:45,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 637. [2018-01-24 12:16:45,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 637 states. [2018-01-24 12:16:45,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 654 transitions. [2018-01-24 12:16:45,050 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 654 transitions. Word has length 346 [2018-01-24 12:16:45,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:45,051 INFO L432 AbstractCegarLoop]: Abstraction has 637 states and 654 transitions. [2018-01-24 12:16:45,051 INFO L433 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-01-24 12:16:45,051 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 654 transitions. [2018-01-24 12:16:45,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-01-24 12:16:45,053 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:45,053 INFO L322 BasicCegarLoop]: trace histogram [50, 43, 42, 42, 42, 42, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:45,053 INFO L371 AbstractCegarLoop]: === Iteration 31 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:45,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1060515318, now seen corresponding path program 12 times [2018-01-24 12:16:45,054 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:45,054 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:45,054 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:45,054 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:45,055 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:45,079 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6181 backedges. 2975 proven. 566 refuted. 0 times theorem prover too weak. 2640 trivial. 0 not checked. [2018-01-24 12:16:45,643 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:45,643 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:45,651 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-24 12:16:45,669 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:45,672 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:45,675 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:45,677 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:45,681 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:45,684 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:45,689 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:45,693 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:45,700 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:45,707 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:45,720 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:45,721 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:45,728 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:46,135 INFO L134 CoverageAnalysis]: Checked inductivity of 6181 backedges. 1867 proven. 192 refuted. 0 times theorem prover too weak. 4122 trivial. 0 not checked. [2018-01-24 12:16:46,156 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:46,156 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 15] total 40 [2018-01-24 12:16:46,156 INFO L409 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-01-24 12:16:46,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-01-24 12:16:46,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1375, Unknown=0, NotChecked=0, Total=1560 [2018-01-24 12:16:46,157 INFO L87 Difference]: Start difference. First operand 637 states and 654 transitions. Second operand 40 states. [2018-01-24 12:16:47,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:47,656 INFO L93 Difference]: Finished difference Result 869 states and 897 transitions. [2018-01-24 12:16:47,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-01-24 12:16:47,656 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 352 [2018-01-24 12:16:47,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:47,659 INFO L225 Difference]: With dead ends: 869 [2018-01-24 12:16:47,659 INFO L226 Difference]: Without dead ends: 796 [2018-01-24 12:16:47,661 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3203 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1547, Invalid=8353, Unknown=0, NotChecked=0, Total=9900 [2018-01-24 12:16:47,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2018-01-24 12:16:47,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 516. [2018-01-24 12:16:47,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2018-01-24 12:16:47,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 529 transitions. [2018-01-24 12:16:47,700 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 529 transitions. Word has length 352 [2018-01-24 12:16:47,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:47,701 INFO L432 AbstractCegarLoop]: Abstraction has 516 states and 529 transitions. [2018-01-24 12:16:47,701 INFO L433 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-01-24 12:16:47,701 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 529 transitions. [2018-01-24 12:16:47,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-01-24 12:16:47,702 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:47,702 INFO L322 BasicCegarLoop]: trace histogram [51, 44, 44, 43, 43, 43, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:47,703 INFO L371 AbstractCegarLoop]: === Iteration 32 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:47,703 INFO L82 PathProgramCache]: Analyzing trace with hash 2034546733, now seen corresponding path program 11 times [2018-01-24 12:16:47,703 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:47,703 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:47,704 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:47,704 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:47,704 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:47,729 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:48,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 3065 proven. 634 refuted. 0 times theorem prover too weak. 2794 trivial. 0 not checked. [2018-01-24 12:16:48,497 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:48,497 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:48,502 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-24 12:16:48,522 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:48,524 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:48,526 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:48,527 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:48,531 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:48,533 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:48,538 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:48,545 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:48,552 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:48,562 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:48,574 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:48,586 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:48,597 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:48,607 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:48,618 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:48,629 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:48,633 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:48,641 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:48,644 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:16:48,644 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:16:48,646 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:16:48,646 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 12:16:49,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 1953 proven. 200 refuted. 0 times theorem prover too weak. 4340 trivial. 0 not checked. [2018-01-24 12:16:49,142 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:49,143 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13] total 30 [2018-01-24 12:16:49,143 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-24 12:16:49,143 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-24 12:16:49,143 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2018-01-24 12:16:49,144 INFO L87 Difference]: Start difference. First operand 516 states and 529 transitions. Second operand 31 states. [2018-01-24 12:16:50,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:50,357 INFO L93 Difference]: Finished difference Result 630 states and 655 transitions. [2018-01-24 12:16:50,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-01-24 12:16:50,357 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 359 [2018-01-24 12:16:50,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:50,359 INFO L225 Difference]: With dead ends: 630 [2018-01-24 12:16:50,359 INFO L226 Difference]: Without dead ends: 628 [2018-01-24 12:16:50,360 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 335 SyntacticMatches, 13 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 928 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=594, Invalid=3066, Unknown=0, NotChecked=0, Total=3660 [2018-01-24 12:16:50,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2018-01-24 12:16:50,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 598. [2018-01-24 12:16:50,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2018-01-24 12:16:50,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 617 transitions. [2018-01-24 12:16:50,401 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 617 transitions. Word has length 359 [2018-01-24 12:16:50,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:50,401 INFO L432 AbstractCegarLoop]: Abstraction has 598 states and 617 transitions. [2018-01-24 12:16:50,401 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-24 12:16:50,401 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 617 transitions. [2018-01-24 12:16:50,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-01-24 12:16:50,414 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:50,415 INFO L322 BasicCegarLoop]: trace histogram [62, 54, 53, 53, 53, 53, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:50,415 INFO L371 AbstractCegarLoop]: === Iteration 33 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:50,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1459193583, now seen corresponding path program 13 times [2018-01-24 12:16:50,415 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:50,415 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:50,416 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:50,416 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:50,416 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:50,444 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:51,103 INFO L134 CoverageAnalysis]: Checked inductivity of 9667 backedges. 3756 proven. 1180 refuted. 0 times theorem prover too weak. 4731 trivial. 0 not checked. [2018-01-24 12:16:51,104 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:51,104 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:51,111 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:51,203 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:51,572 INFO L134 CoverageAnalysis]: Checked inductivity of 9667 backedges. 2668 proven. 243 refuted. 0 times theorem prover too weak. 6756 trivial. 0 not checked. [2018-01-24 12:16:51,593 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:51,593 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11] total 30 [2018-01-24 12:16:51,594 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-24 12:16:51,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-24 12:16:51,594 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2018-01-24 12:16:51,595 INFO L87 Difference]: Start difference. First operand 598 states and 617 transitions. Second operand 31 states. [2018-01-24 12:16:52,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:52,813 INFO L93 Difference]: Finished difference Result 744 states and 772 transitions. [2018-01-24 12:16:52,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-24 12:16:52,813 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 430 [2018-01-24 12:16:52,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:52,815 INFO L225 Difference]: With dead ends: 744 [2018-01-24 12:16:52,815 INFO L226 Difference]: Without dead ends: 743 [2018-01-24 12:16:52,816 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 918 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=541, Invalid=3491, Unknown=0, NotChecked=0, Total=4032 [2018-01-24 12:16:52,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2018-01-24 12:16:52,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 677. [2018-01-24 12:16:52,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2018-01-24 12:16:52,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 701 transitions. [2018-01-24 12:16:52,872 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 701 transitions. Word has length 430 [2018-01-24 12:16:52,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:52,873 INFO L432 AbstractCegarLoop]: Abstraction has 677 states and 701 transitions. [2018-01-24 12:16:52,873 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-24 12:16:52,873 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 701 transitions. [2018-01-24 12:16:52,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-01-24 12:16:52,876 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:52,877 INFO L322 BasicCegarLoop]: trace histogram [62, 54, 54, 53, 53, 53, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:52,877 INFO L371 AbstractCegarLoop]: === Iteration 34 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:52,877 INFO L82 PathProgramCache]: Analyzing trace with hash 2009639230, now seen corresponding path program 12 times [2018-01-24 12:16:52,877 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:52,877 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:52,878 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:52,878 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:52,878 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:52,921 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:53,731 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 4379 proven. 794 refuted. 0 times theorem prover too weak. 4547 trivial. 0 not checked. [2018-01-24 12:16:53,731 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:53,731 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:16:53,737 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-24 12:16:53,756 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:53,758 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:53,761 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:53,764 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:53,768 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:53,771 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:53,776 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:53,781 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:53,790 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:53,796 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:53,805 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:53,813 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:53,821 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:53,828 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:53,839 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:53,848 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:53,863 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:53,873 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:53,889 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:53,892 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:53,898 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:53,902 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:16:53,903 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:16:53,912 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:16:53,912 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 12:16:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 2720 proven. 252 refuted. 0 times theorem prover too weak. 6748 trivial. 0 not checked. [2018-01-24 12:16:54,766 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:54,766 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15] total 34 [2018-01-24 12:16:54,767 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-24 12:16:54,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-24 12:16:54,768 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1009, Unknown=0, NotChecked=0, Total=1190 [2018-01-24 12:16:54,768 INFO L87 Difference]: Start difference. First operand 677 states and 701 transitions. Second operand 35 states. [2018-01-24 12:16:56,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:56,205 INFO L93 Difference]: Finished difference Result 897 states and 935 transitions. [2018-01-24 12:16:56,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-01-24 12:16:56,205 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 431 [2018-01-24 12:16:56,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:56,209 INFO L225 Difference]: With dead ends: 897 [2018-01-24 12:16:56,209 INFO L226 Difference]: Without dead ends: 895 [2018-01-24 12:16:56,210 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 402 SyntacticMatches, 15 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1366 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1158, Invalid=3812, Unknown=0, NotChecked=0, Total=4970 [2018-01-24 12:16:56,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2018-01-24 12:16:56,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 870. [2018-01-24 12:16:56,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 870 states. [2018-01-24 12:16:56,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 905 transitions. [2018-01-24 12:16:56,262 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 905 transitions. Word has length 431 [2018-01-24 12:16:56,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:56,263 INFO L432 AbstractCegarLoop]: Abstraction has 870 states and 905 transitions. [2018-01-24 12:16:56,263 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-01-24 12:16:56,263 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 905 transitions. [2018-01-24 12:16:56,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-01-24 12:16:56,265 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:56,265 INFO L322 BasicCegarLoop]: trace histogram [64, 56, 56, 55, 55, 55, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:56,265 INFO L371 AbstractCegarLoop]: === Iteration 35 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:56,266 INFO L82 PathProgramCache]: Analyzing trace with hash 435773070, now seen corresponding path program 13 times [2018-01-24 12:16:56,266 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:56,266 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:56,266 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:56,266 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:56,266 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:56,292 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. Received shutdown request... [2018-01-24 12:16:56,472 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:265) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$1(Interpolator.java:263) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:132) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:915) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:279) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackTraceAbstractionRefinementStrategy.getTraceCheck(MultiTrackTraceAbstractionRefinementStrategy.java:218) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:294) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:113) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:117) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-01-24 12:16:56,476 INFO L168 Benchmark]: Toolchain (without parser) took 40722.10 ms. Allocated memory was 300.9 MB in the beginning and 1.1 GB in the end (delta: 798.0 MB). Free memory was 262.0 MB in the beginning and 386.2 MB in the end (delta: -124.2 MB). Peak memory consumption was 673.8 MB. Max. memory is 5.3 GB. [2018-01-24 12:16:56,477 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 300.9 MB. Free memory is still 267.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 12:16:56,478 INFO L168 Benchmark]: CACSL2BoogieTranslator took 177.19 ms. Allocated memory is still 300.9 MB. Free memory was 261.0 MB in the beginning and 253.0 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. [2018-01-24 12:16:56,478 INFO L168 Benchmark]: Boogie Preprocessor took 28.99 ms. Allocated memory is still 300.9 MB. Free memory was 253.0 MB in the beginning and 250.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. [2018-01-24 12:16:56,479 INFO L168 Benchmark]: RCFGBuilder took 241.91 ms. Allocated memory is still 300.9 MB. Free memory was 250.9 MB in the beginning and 236.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 5.3 GB. [2018-01-24 12:16:56,479 INFO L168 Benchmark]: TraceAbstraction took 40265.64 ms. Allocated memory was 300.9 MB in the beginning and 1.1 GB in the end (delta: 798.0 MB). Free memory was 235.2 MB in the beginning and 386.2 MB in the end (delta: -151.1 MB). Peak memory consumption was 646.9 MB. Max. memory is 5.3 GB. [2018-01-24 12:16:56,481 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 300.9 MB. Free memory is still 267.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 177.19 ms. Allocated memory is still 300.9 MB. Free memory was 261.0 MB in the beginning and 253.0 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 28.99 ms. Allocated memory is still 300.9 MB. Free memory was 253.0 MB in the beginning and 250.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. * RCFGBuilder took 241.91 ms. Allocated memory is still 300.9 MB. Free memory was 250.9 MB in the beginning and 236.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 40265.64 ms. Allocated memory was 300.9 MB in the beginning and 1.1 GB in the end (delta: 798.0 MB). Free memory was 235.2 MB in the beginning and 386.2 MB in the end (delta: -151.1 MB). Peak memory consumption was 646.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:265) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_12-16-56-490.csv Completed graceful shutdown