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/mempurity-32bit-Automizer_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysWithLenghtAtDeclaration_false-valid-deref-read.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-47db877 [2018-01-23 14:38:29,729 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-23 14:38:29,731 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-23 14:38:29,744 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-23 14:38:29,745 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-23 14:38:29,745 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-23 14:38:29,746 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-23 14:38:29,747 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-23 14:38:29,749 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-23 14:38:29,750 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-23 14:38:29,750 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-23 14:38:29,751 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-23 14:38:29,751 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-23 14:38:29,752 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-23 14:38:29,753 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-23 14:38:29,755 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-23 14:38:29,757 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-23 14:38:29,759 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-23 14:38:29,761 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-23 14:38:29,762 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-23 14:38:29,764 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-23 14:38:29,764 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-23 14:38:29,765 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-23 14:38:29,766 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-23 14:38:29,767 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-23 14:38:29,768 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-23 14:38:29,768 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-23 14:38:29,769 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-23 14:38:29,769 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-23 14:38:29,769 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-23 14:38:29,770 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-23 14:38:29,770 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf [2018-01-23 14:38:29,780 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-23 14:38:29,780 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-23 14:38:29,781 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-23 14:38:29,781 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-23 14:38:29,782 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-23 14:38:29,782 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-23 14:38:29,782 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-23 14:38:29,782 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-23 14:38:29,783 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-23 14:38:29,783 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-23 14:38:29,783 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-23 14:38:29,783 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-23 14:38:29,783 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-23 14:38:29,784 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-23 14:38:29,784 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-23 14:38:29,784 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-23 14:38:29,784 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-23 14:38:29,784 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-23 14:38:29,785 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-23 14:38:29,785 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-23 14:38:29,785 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-23 14:38:29,785 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-23 14:38:29,785 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-23 14:38:29,786 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-23 14:38:29,786 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-23 14:38:29,786 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-23 14:38:29,786 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-23 14:38:29,786 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-23 14:38:29,787 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-23 14:38:29,787 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-23 14:38:29,787 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-23 14:38:29,787 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-23 14:38:29,787 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-23 14:38:29,787 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-23 14:38:29,788 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-23 14:38:29,788 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-23 14:38:29,789 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-23 14:38:29,824 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-23 14:38:29,837 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-23 14:38:29,841 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-23 14:38:29,843 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-23 14:38:29,843 INFO L276 PluginConnector]: CDTParser initialized [2018-01-23 14:38:29,844 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysWithLenghtAtDeclaration_false-valid-deref-read.c [2018-01-23 14:38:29,958 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-23 14:38:29,965 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-23 14:38:29,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-23 14:38:29,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-23 14:38:29,974 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-23 14:38:29,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:38:29" (1/1) ... [2018-01-23 14:38:29,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23155f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:38:29, skipping insertion in model container [2018-01-23 14:38:29,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:38:29" (1/1) ... [2018-01-23 14:38:30,002 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:38:30,023 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:38:30,150 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:38:30,165 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:38:30,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:38:30 WrapperNode [2018-01-23 14:38:30,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-23 14:38:30,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-23 14:38:30,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-23 14:38:30,172 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-23 14:38:30,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:38:30" (1/1) ... [2018-01-23 14:38:30,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:38:30" (1/1) ... [2018-01-23 14:38:30,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:38:30" (1/1) ... [2018-01-23 14:38:30,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:38:30" (1/1) ... [2018-01-23 14:38:30,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:38:30" (1/1) ... [2018-01-23 14:38:30,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:38:30" (1/1) ... [2018-01-23 14:38:30,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:38:30" (1/1) ... [2018-01-23 14:38:30,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-23 14:38:30,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-23 14:38:30,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-23 14:38:30,205 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-23 14:38:30,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:38:30" (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 [2018-01-23 14:38:30,255 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-23 14:38:30,255 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-23 14:38:30,255 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-01-23 14:38:30,255 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-23 14:38:30,255 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-23 14:38:30,255 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-23 14:38:30,255 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-23 14:38:30,256 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-23 14:38:30,256 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-23 14:38:30,256 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-01-23 14:38:30,256 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-23 14:38:30,256 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-23 14:38:30,256 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-23 14:38:30,445 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-23 14:38:30,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:38:30 BoogieIcfgContainer [2018-01-23 14:38:30,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-23 14:38:30,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-23 14:38:30,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-23 14:38:30,448 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-23 14:38:30,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.01 02:38:29" (1/3) ... [2018-01-23 14:38:30,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418b77a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:38:30, skipping insertion in model container [2018-01-23 14:38:30,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:38:30" (2/3) ... [2018-01-23 14:38:30,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418b77a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:38:30, skipping insertion in model container [2018-01-23 14:38:30,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:38:30" (3/3) ... [2018-01-23 14:38:30,452 INFO L105 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration_false-valid-deref-read.c [2018-01-23 14:38:30,462 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-23 14:38:30,471 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-23 14:38:30,515 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:38:30,516 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:38:30,516 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:38:30,516 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:38:30,516 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:38:30,516 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:38:30,517 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:38:30,517 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-23 14:38:30,518 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:38:30,537 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-23 14:38:30,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-23 14:38:30,543 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:30,544 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-23 14:38:30,545 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-23 14:38:30,550 INFO L82 PathProgramCache]: Analyzing trace with hash 100907, now seen corresponding path program 1 times [2018-01-23 14:38:30,552 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:30,553 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:30,607 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:30,608 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:38:30,608 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:38:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:38:30,657 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:38:30,663 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:38:30,668 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:38:30,668 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:38:30,668 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:38:30,669 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:38:30,669 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:38:30,669 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:38:30,669 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:38:30,669 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == fooErr0EnsuresViolation======== [2018-01-23 14:38:30,669 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:38:30,670 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-23 14:38:30,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-23 14:38:30,671 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:30,671 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:30,672 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr0EnsuresViolation]=== [2018-01-23 14:38:30,672 INFO L82 PathProgramCache]: Analyzing trace with hash 352444009, now seen corresponding path program 1 times [2018-01-23 14:38:30,672 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:30,672 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:30,673 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:30,673 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:38:30,673 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:30,696 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:38:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:38:30,724 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:38:30,724 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:38:30,725 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:38:30,735 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:38:30,735 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:38:30,738 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2018-01-23 14:38:30,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:30,758 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2018-01-23 14:38:30,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:38:30,759 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-01-23 14:38:30,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:30,768 INFO L225 Difference]: With dead ends: 72 [2018-01-23 14:38:30,768 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:38:30,772 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:38:30,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:38:30,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:38:30,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:38:30,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:38:30,881 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-01-23 14:38:30,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:30,881 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:38:30,881 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:38:30,881 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:38:30,882 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:38:30,884 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:38:30,884 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:38:30,885 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:38:30,885 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:38:30,885 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:38:30,885 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:38:30,885 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:38:30,885 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-23 14:38:30,885 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:38:30,887 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-23 14:38:30,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-23 14:38:30,889 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:30,889 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:30,889 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:30,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1481761889, now seen corresponding path program 1 times [2018-01-23 14:38:30,889 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:30,889 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:30,890 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:30,891 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:38:30,891 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:30,900 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:38:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:38:30,913 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:38:30,913 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:38:30,914 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:38:30,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:38:30,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:38:30,914 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2018-01-23 14:38:30,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:30,921 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2018-01-23 14:38:30,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:38:30,921 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-01-23 14:38:30,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:30,923 INFO L225 Difference]: With dead ends: 72 [2018-01-23 14:38:30,923 INFO L226 Difference]: Without dead ends: 37 [2018-01-23 14:38:30,924 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:38:30,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-01-23 14:38:30,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-01-23 14:38:30,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-01-23 14:38:30,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-01-23 14:38:30,935 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 17 [2018-01-23 14:38:30,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:30,936 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-01-23 14:38:30,936 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:38:30,936 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-01-23 14:38:30,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-23 14:38:30,937 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:30,937 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:30,937 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:30,937 INFO L82 PathProgramCache]: Analyzing trace with hash 499012364, now seen corresponding path program 1 times [2018-01-23 14:38:30,937 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:30,937 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:30,939 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:30,939 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:38:30,939 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:30,949 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:38:30,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:38:30,985 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:38:30,986 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-23 14:38:30,987 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-23 14:38:30,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-23 14:38:30,988 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:38:30,988 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 3 states. [2018-01-23 14:38:31,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:31,036 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2018-01-23 14:38:31,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-23 14:38:31,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-01-23 14:38:31,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:31,040 INFO L225 Difference]: With dead ends: 66 [2018-01-23 14:38:31,040 INFO L226 Difference]: Without dead ends: 51 [2018-01-23 14:38:31,042 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:38:31,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-01-23 14:38:31,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2018-01-23 14:38:31,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-01-23 14:38:31,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-01-23 14:38:31,054 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 19 [2018-01-23 14:38:31,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:31,054 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-01-23 14:38:31,054 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-23 14:38:31,055 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-01-23 14:38:31,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-23 14:38:31,056 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:31,056 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:31,056 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:31,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1504830404, now seen corresponding path program 1 times [2018-01-23 14:38:31,057 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:31,057 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:31,057 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:31,058 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:38:31,058 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:31,077 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:38:31,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:38:31,243 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:38:31,243 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-23 14:38:31,244 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-23 14:38:31,244 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-23 14:38:31,244 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-23 14:38:31,244 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 6 states. [2018-01-23 14:38:31,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:31,389 INFO L93 Difference]: Finished difference Result 90 states and 100 transitions. [2018-01-23 14:38:31,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:38:31,389 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-01-23 14:38:31,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:31,390 INFO L225 Difference]: With dead ends: 90 [2018-01-23 14:38:31,390 INFO L226 Difference]: Without dead ends: 59 [2018-01-23 14:38:31,391 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-23 14:38:31,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-01-23 14:38:31,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2018-01-23 14:38:31,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-01-23 14:38:31,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2018-01-23 14:38:31,397 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 31 [2018-01-23 14:38:31,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:31,398 INFO L432 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2018-01-23 14:38:31,398 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-23 14:38:31,398 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2018-01-23 14:38:31,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-23 14:38:31,400 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:31,400 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:31,400 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:31,400 INFO L82 PathProgramCache]: Analyzing trace with hash -151955344, now seen corresponding path program 1 times [2018-01-23 14:38:31,400 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:31,400 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:31,401 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:31,402 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:38:31,402 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:31,415 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:38:31,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:38:31,537 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:38:31,537 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 [2018-01-23 14:38:31,551 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:38:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:31,582 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:38:31,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:38:31,694 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:38:31,694 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-01-23 14:38:31,695 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-23 14:38:31,695 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-23 14:38:31,695 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-01-23 14:38:31,695 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 10 states. [2018-01-23 14:38:31,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:31,989 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2018-01-23 14:38:31,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-23 14:38:31,989 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2018-01-23 14:38:31,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:31,991 INFO L225 Difference]: With dead ends: 103 [2018-01-23 14:38:31,991 INFO L226 Difference]: Without dead ends: 61 [2018-01-23 14:38:31,992 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-01-23 14:38:31,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-01-23 14:38:32,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 48. [2018-01-23 14:38:32,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-01-23 14:38:32,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2018-01-23 14:38:32,002 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 36 [2018-01-23 14:38:32,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:32,002 INFO L432 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2018-01-23 14:38:32,003 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-23 14:38:32,003 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2018-01-23 14:38:32,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-23 14:38:32,004 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:32,004 INFO L322 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:32,004 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:32,005 INFO L82 PathProgramCache]: Analyzing trace with hash -524554428, now seen corresponding path program 2 times [2018-01-23 14:38:32,005 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:32,005 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:32,006 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:32,006 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:38:32,006 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:32,022 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:38:32,071 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-01-23 14:38:32,071 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:38:32,071 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 [2018-01-23 14:38:32,088 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-23 14:38:32,101 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:32,108 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:32,109 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:38:32,113 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:38:32,125 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-01-23 14:38:32,149 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:38:32,149 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-01-23 14:38:32,149 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:38:32,150 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:38:32,150 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:38:32,150 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 5 states. [2018-01-23 14:38:32,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:32,203 INFO L93 Difference]: Finished difference Result 89 states and 99 transitions. [2018-01-23 14:38:32,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-23 14:38:32,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2018-01-23 14:38:32,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:32,205 INFO L225 Difference]: With dead ends: 89 [2018-01-23 14:38:32,205 INFO L226 Difference]: Without dead ends: 72 [2018-01-23 14:38:32,205 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:38:32,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-01-23 14:38:32,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 57. [2018-01-23 14:38:32,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-01-23 14:38:32,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2018-01-23 14:38:32,214 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 41 [2018-01-23 14:38:32,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:32,214 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2018-01-23 14:38:32,214 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:38:32,215 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2018-01-23 14:38:32,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-01-23 14:38:32,216 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:32,217 INFO L322 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:32,217 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:32,217 INFO L82 PathProgramCache]: Analyzing trace with hash 936865683, now seen corresponding path program 3 times [2018-01-23 14:38:32,217 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:32,217 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:32,218 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:32,219 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:38:32,219 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:32,242 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:38:32,299 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-01-23 14:38:32,299 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:38:32,299 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 [2018-01-23 14:38:32,304 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-23 14:38:32,316 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:32,321 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:32,325 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:32,326 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:38:32,329 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:38:32,342 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-01-23 14:38:32,362 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:38:32,362 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-01-23 14:38:32,362 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-23 14:38:32,363 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-23 14:38:32,363 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-23 14:38:32,363 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 6 states. [2018-01-23 14:38:32,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:32,491 INFO L93 Difference]: Finished difference Result 107 states and 120 transitions. [2018-01-23 14:38:32,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:38:32,492 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2018-01-23 14:38:32,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:32,493 INFO L225 Difference]: With dead ends: 107 [2018-01-23 14:38:32,493 INFO L226 Difference]: Without dead ends: 86 [2018-01-23 14:38:32,494 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-23 14:38:32,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-01-23 14:38:32,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2018-01-23 14:38:32,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-01-23 14:38:32,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2018-01-23 14:38:32,501 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 62 [2018-01-23 14:38:32,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:32,502 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2018-01-23 14:38:32,502 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-23 14:38:32,502 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2018-01-23 14:38:32,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-01-23 14:38:32,504 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:32,504 INFO L322 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:32,504 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:32,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1345357476, now seen corresponding path program 4 times [2018-01-23 14:38:32,505 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:32,505 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:32,506 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:32,506 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:38:32,506 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:32,527 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:38:32,643 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-01-23 14:38:32,644 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:38:32,644 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 [2018-01-23 14:38:32,652 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-23 14:38:32,679 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:38:32,683 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:38:32,754 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 118 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-01-23 14:38:32,775 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:38:32,775 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2018-01-23 14:38:32,776 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-23 14:38:32,776 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-23 14:38:32,776 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-01-23 14:38:32,776 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 12 states. [2018-01-23 14:38:33,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:33,031 INFO L93 Difference]: Finished difference Result 185 states and 209 transitions. [2018-01-23 14:38:33,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-23 14:38:33,032 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2018-01-23 14:38:33,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:33,033 INFO L225 Difference]: With dead ends: 185 [2018-01-23 14:38:33,033 INFO L226 Difference]: Without dead ends: 135 [2018-01-23 14:38:33,034 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2018-01-23 14:38:33,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-01-23 14:38:33,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 96. [2018-01-23 14:38:33,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-01-23 14:38:33,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2018-01-23 14:38:33,046 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 83 [2018-01-23 14:38:33,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:33,046 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2018-01-23 14:38:33,046 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-23 14:38:33,046 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2018-01-23 14:38:33,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-01-23 14:38:33,048 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:33,048 INFO L322 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 11, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:33,048 INFO L371 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:33,048 INFO L82 PathProgramCache]: Analyzing trace with hash -389182277, now seen corresponding path program 5 times [2018-01-23 14:38:33,048 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:33,048 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:33,049 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:33,049 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:38:33,049 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:33,081 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:38:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2018-01-23 14:38:33,255 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:38:33,255 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 [2018-01-23 14:38:33,265 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-23 14:38:33,280 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:33,285 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:33,298 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:33,304 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:33,321 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:33,323 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:38:33,329 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:38:33,532 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 270 proven. 118 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-01-23 14:38:33,553 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:38:33,553 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13] total 18 [2018-01-23 14:38:33,554 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-23 14:38:33,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-23 14:38:33,554 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2018-01-23 14:38:33,554 INFO L87 Difference]: Start difference. First operand 96 states and 106 transitions. Second operand 18 states. [2018-01-23 14:38:34,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:34,036 INFO L93 Difference]: Finished difference Result 234 states and 263 transitions. [2018-01-23 14:38:34,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-23 14:38:34,036 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 119 [2018-01-23 14:38:34,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:34,038 INFO L225 Difference]: With dead ends: 234 [2018-01-23 14:38:34,038 INFO L226 Difference]: Without dead ends: 172 [2018-01-23 14:38:34,039 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=180, Invalid=812, Unknown=0, NotChecked=0, Total=992 [2018-01-23 14:38:34,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-01-23 14:38:34,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 131. [2018-01-23 14:38:34,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-01-23 14:38:34,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 145 transitions. [2018-01-23 14:38:34,056 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 145 transitions. Word has length 119 [2018-01-23 14:38:34,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:34,057 INFO L432 AbstractCegarLoop]: Abstraction has 131 states and 145 transitions. [2018-01-23 14:38:34,057 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-23 14:38:34,057 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 145 transitions. [2018-01-23 14:38:34,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-01-23 14:38:34,059 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:34,059 INFO L322 BasicCegarLoop]: trace histogram [22, 17, 17, 17, 17, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:34,060 INFO L371 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:34,060 INFO L82 PathProgramCache]: Analyzing trace with hash 349526166, now seen corresponding path program 6 times [2018-01-23 14:38:34,060 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:34,060 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:34,061 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:34,061 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:38:34,061 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:34,094 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:38:34,233 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2018-01-23 14:38:34,233 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:38:34,233 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 [2018-01-23 14:38:34,245 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-23 14:38:34,262 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:34,266 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:34,269 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:34,278 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:34,288 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:34,291 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:34,297 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:34,303 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:34,313 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:34,315 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:38:34,327 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:38:34,373 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2018-01-23 14:38:34,394 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:38:34,394 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-01-23 14:38:34,395 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-23 14:38:34,395 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-23 14:38:34,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-23 14:38:34,395 INFO L87 Difference]: Start difference. First operand 131 states and 145 transitions. Second operand 9 states. [2018-01-23 14:38:34,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:34,518 INFO L93 Difference]: Finished difference Result 208 states and 233 transitions. [2018-01-23 14:38:34,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-23 14:38:34,518 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 160 [2018-01-23 14:38:34,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:34,520 INFO L225 Difference]: With dead ends: 208 [2018-01-23 14:38:34,520 INFO L226 Difference]: Without dead ends: 175 [2018-01-23 14:38:34,521 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-23 14:38:34,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-01-23 14:38:34,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 140. [2018-01-23 14:38:34,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-01-23 14:38:34,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 156 transitions. [2018-01-23 14:38:34,534 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 156 transitions. Word has length 160 [2018-01-23 14:38:34,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:34,535 INFO L432 AbstractCegarLoop]: Abstraction has 140 states and 156 transitions. [2018-01-23 14:38:34,535 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-23 14:38:34,535 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 156 transitions. [2018-01-23 14:38:34,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-01-23 14:38:34,537 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:34,537 INFO L322 BasicCegarLoop]: trace histogram [27, 21, 21, 21, 21, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:34,538 INFO L371 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:34,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1727385407, now seen corresponding path program 7 times [2018-01-23 14:38:34,538 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:34,538 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:34,539 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:34,539 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:38:34,539 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:34,568 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:38:34,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1479 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 1392 trivial. 0 not checked. [2018-01-23 14:38:34,684 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:38:34,684 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 [2018-01-23 14:38:34,690 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:38:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:34,736 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:38:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1479 backedges. 995 proven. 38 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked. [2018-01-23 14:38:35,002 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:38:35,002 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2018-01-23 14:38:35,003 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-23 14:38:35,003 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-23 14:38:35,003 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2018-01-23 14:38:35,004 INFO L87 Difference]: Start difference. First operand 140 states and 156 transitions. Second operand 19 states. [2018-01-23 14:38:35,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:35,367 INFO L93 Difference]: Finished difference Result 363 states and 408 transitions. [2018-01-23 14:38:35,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-23 14:38:35,368 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 191 [2018-01-23 14:38:35,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:35,370 INFO L225 Difference]: With dead ends: 363 [2018-01-23 14:38:35,370 INFO L226 Difference]: Without dead ends: 280 [2018-01-23 14:38:35,371 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=697, Unknown=0, NotChecked=0, Total=870 [2018-01-23 14:38:35,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-01-23 14:38:35,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 180. [2018-01-23 14:38:35,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-01-23 14:38:35,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 201 transitions. [2018-01-23 14:38:35,387 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 201 transitions. Word has length 191 [2018-01-23 14:38:35,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:35,387 INFO L432 AbstractCegarLoop]: Abstraction has 180 states and 201 transitions. [2018-01-23 14:38:35,387 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-23 14:38:35,387 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 201 transitions. [2018-01-23 14:38:35,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-01-23 14:38:35,391 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:35,391 INFO L322 BasicCegarLoop]: trace histogram [36, 29, 29, 29, 29, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:35,391 INFO L371 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:35,391 INFO L82 PathProgramCache]: Analyzing trace with hash 927615722, now seen corresponding path program 8 times [2018-01-23 14:38:35,391 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:35,391 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:35,392 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:35,392 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:38:35,393 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:35,429 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:38:35,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2681 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 2562 trivial. 0 not checked. [2018-01-23 14:38:35,656 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:38:35,656 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 [2018-01-23 14:38:35,662 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-23 14:38:35,677 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:35,708 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:35,716 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:38:35,724 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:38:35,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2681 backedges. 1730 proven. 60 refuted. 0 times theorem prover too weak. 891 trivial. 0 not checked. [2018-01-23 14:38:35,924 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:38:35,924 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 22 [2018-01-23 14:38:35,925 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-01-23 14:38:35,925 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-01-23 14:38:35,925 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2018-01-23 14:38:35,925 INFO L87 Difference]: Start difference. First operand 180 states and 201 transitions. Second operand 22 states. [2018-01-23 14:38:36,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:36,416 INFO L93 Difference]: Finished difference Result 460 states and 516 transitions. [2018-01-23 14:38:36,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-23 14:38:36,417 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 242 [2018-01-23 14:38:36,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:36,418 INFO L225 Difference]: With dead ends: 460 [2018-01-23 14:38:36,419 INFO L226 Difference]: Without dead ends: 365 [2018-01-23 14:38:36,419 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=226, Invalid=964, Unknown=0, NotChecked=0, Total=1190 [2018-01-23 14:38:36,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-01-23 14:38:36,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 225. [2018-01-23 14:38:36,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-01-23 14:38:36,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 252 transitions. [2018-01-23 14:38:36,435 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 252 transitions. Word has length 242 [2018-01-23 14:38:36,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:36,435 INFO L432 AbstractCegarLoop]: Abstraction has 225 states and 252 transitions. [2018-01-23 14:38:36,435 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-01-23 14:38:36,435 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 252 transitions. [2018-01-23 14:38:36,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-01-23 14:38:36,436 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:36,437 INFO L322 BasicCegarLoop]: trace histogram [46, 38, 38, 38, 38, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:36,437 INFO L371 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:36,437 INFO L82 PathProgramCache]: Analyzing trace with hash -965692109, now seen corresponding path program 9 times [2018-01-23 14:38:36,437 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:36,437 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:36,438 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:36,438 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:38:36,438 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:36,470 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:38:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4447 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 4291 trivial. 0 not checked. [2018-01-23 14:38:36,816 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:38:36,816 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 [2018-01-23 14:38:36,822 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-23 14:38:36,842 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:36,845 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:36,853 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:36,856 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:36,861 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:36,866 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:36,870 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:36,875 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:36,876 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:38:36,881 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:38:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4447 backedges. 1173 proven. 87 refuted. 0 times theorem prover too weak. 3187 trivial. 0 not checked. [2018-01-23 14:38:37,039 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:38:37,040 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2018-01-23 14:38:37,040 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-23 14:38:37,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-23 14:38:37,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-01-23 14:38:37,040 INFO L87 Difference]: Start difference. First operand 225 states and 252 transitions. Second operand 19 states. [2018-01-23 14:38:37,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:37,383 INFO L93 Difference]: Finished difference Result 535 states and 610 transitions. [2018-01-23 14:38:37,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-01-23 14:38:37,383 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 298 [2018-01-23 14:38:37,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:37,386 INFO L225 Difference]: With dead ends: 535 [2018-01-23 14:38:37,386 INFO L226 Difference]: Without dead ends: 490 [2018-01-23 14:38:37,387 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2018-01-23 14:38:37,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2018-01-23 14:38:37,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 283. [2018-01-23 14:38:37,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-01-23 14:38:37,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 322 transitions. [2018-01-23 14:38:37,405 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 322 transitions. Word has length 298 [2018-01-23 14:38:37,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:37,406 INFO L432 AbstractCegarLoop]: Abstraction has 283 states and 322 transitions. [2018-01-23 14:38:37,406 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-23 14:38:37,406 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 322 transitions. [2018-01-23 14:38:37,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-01-23 14:38:37,407 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:37,408 INFO L322 BasicCegarLoop]: trace histogram [57, 48, 48, 48, 48, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:37,408 INFO L371 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:37,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1850454344, now seen corresponding path program 10 times [2018-01-23 14:38:37,408 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:37,408 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:37,409 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:37,409 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:38:37,409 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:37,438 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:38:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 6918 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 6720 trivial. 0 not checked. [2018-01-23 14:38:37,709 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:38:37,709 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 [2018-01-23 14:38:37,714 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-23 14:38:37,773 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:38:37,781 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:38:38,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6918 backedges. 4094 proven. 119 refuted. 0 times theorem prover too weak. 2705 trivial. 0 not checked. [2018-01-23 14:38:38,020 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:38:38,020 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18] total 28 [2018-01-23 14:38:38,021 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-23 14:38:38,022 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-23 14:38:38,022 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2018-01-23 14:38:38,022 INFO L87 Difference]: Start difference. First operand 283 states and 322 transitions. Second operand 28 states. [2018-01-23 14:38:38,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:38,841 INFO L93 Difference]: Finished difference Result 722 states and 827 transitions. [2018-01-23 14:38:38,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-23 14:38:38,842 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 359 [2018-01-23 14:38:38,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:38,847 INFO L225 Difference]: With dead ends: 722 [2018-01-23 14:38:38,848 INFO L226 Difference]: Without dead ends: 593 [2018-01-23 14:38:38,850 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=353, Invalid=1627, Unknown=0, NotChecked=0, Total=1980 [2018-01-23 14:38:38,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2018-01-23 14:38:38,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 338. [2018-01-23 14:38:38,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2018-01-23 14:38:38,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 382 transitions. [2018-01-23 14:38:38,882 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 382 transitions. Word has length 359 [2018-01-23 14:38:38,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:38,883 INFO L432 AbstractCegarLoop]: Abstraction has 338 states and 382 transitions. [2018-01-23 14:38:38,883 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-23 14:38:38,883 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 382 transitions. [2018-01-23 14:38:38,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-01-23 14:38:38,887 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:38,887 INFO L322 BasicCegarLoop]: trace histogram [68, 58, 58, 58, 58, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:38,887 INFO L371 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:38,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1447339731, now seen corresponding path program 11 times [2018-01-23 14:38:38,888 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:38,888 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:38,889 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:38,889 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:38:38,889 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:38,939 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:38:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 9695 trivial. 0 not checked. [2018-01-23 14:38:39,349 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:38:39,349 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 [2018-01-23 14:38:39,355 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-23 14:38:39,382 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:39,386 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:39,390 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:39,395 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:39,402 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:39,409 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:39,418 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:39,427 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:39,435 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:39,437 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:38:39,445 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:38:39,855 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 5758 proven. 500 refuted. 0 times theorem prover too weak. 3682 trivial. 0 not checked. [2018-01-23 14:38:39,874 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:38:39,874 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19] total 30 [2018-01-23 14:38:39,875 INFO L409 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-01-23 14:38:39,875 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-01-23 14:38:39,875 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2018-01-23 14:38:39,876 INFO L87 Difference]: Start difference. First operand 338 states and 382 transitions. Second operand 30 states. [2018-01-23 14:38:41,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:41,174 INFO L93 Difference]: Finished difference Result 804 states and 906 transitions. [2018-01-23 14:38:41,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-01-23 14:38:41,175 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 420 [2018-01-23 14:38:41,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:41,177 INFO L225 Difference]: With dead ends: 804 [2018-01-23 14:38:41,177 INFO L226 Difference]: Without dead ends: 458 [2018-01-23 14:38:41,179 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=517, Invalid=2905, Unknown=0, NotChecked=0, Total=3422 [2018-01-23 14:38:41,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2018-01-23 14:38:41,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 339. [2018-01-23 14:38:41,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-01-23 14:38:41,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 376 transitions. [2018-01-23 14:38:41,201 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 376 transitions. Word has length 420 [2018-01-23 14:38:41,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:41,201 INFO L432 AbstractCegarLoop]: Abstraction has 339 states and 376 transitions. [2018-01-23 14:38:41,201 INFO L433 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-01-23 14:38:41,201 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 376 transitions. [2018-01-23 14:38:41,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2018-01-23 14:38:41,204 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:41,204 INFO L322 BasicCegarLoop]: trace histogram [78, 67, 67, 67, 67, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:41,204 INFO L371 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:41,204 INFO L82 PathProgramCache]: Analyzing trace with hash 593814198, now seen corresponding path program 12 times [2018-01-23 14:38:41,204 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:41,204 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:41,205 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:41,205 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:38:41,205 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:41,239 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:38:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 13156 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 12859 trivial. 0 not checked. [2018-01-23 14:38:41,931 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:38:41,931 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 [2018-01-23 14:38:41,937 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-23 14:38:41,970 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:41,986 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:41,995 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:42,005 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:42,021 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:42,026 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:42,032 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:42,039 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:42,049 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:42,058 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:42,066 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:42,075 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:42,085 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:42,094 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:42,105 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:42,115 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:42,128 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:42,139 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:42,152 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:42,154 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:38:42,162 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:38:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 13156 backedges. 2730 proven. 156 refuted. 0 times theorem prover too weak. 10270 trivial. 0 not checked. [2018-01-23 14:38:42,443 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:38:42,443 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2018-01-23 14:38:42,444 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-23 14:38:42,444 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-23 14:38:42,444 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2018-01-23 14:38:42,445 INFO L87 Difference]: Start difference. First operand 339 states and 376 transitions. Second operand 24 states. [2018-01-23 14:38:43,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:43,212 INFO L93 Difference]: Finished difference Result 756 states and 859 transitions. [2018-01-23 14:38:43,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-23 14:38:43,212 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 476 [2018-01-23 14:38:43,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:43,219 INFO L225 Difference]: With dead ends: 756 [2018-01-23 14:38:43,220 INFO L226 Difference]: Without dead ends: 699 [2018-01-23 14:38:43,221 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=255, Invalid=801, Unknown=0, NotChecked=0, Total=1056 [2018-01-23 14:38:43,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2018-01-23 14:38:43,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 407. [2018-01-23 14:38:43,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-01-23 14:38:43,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 458 transitions. [2018-01-23 14:38:43,258 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 458 transitions. Word has length 476 [2018-01-23 14:38:43,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:43,259 INFO L432 AbstractCegarLoop]: Abstraction has 407 states and 458 transitions. [2018-01-23 14:38:43,259 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-23 14:38:43,259 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 458 transitions. [2018-01-23 14:38:43,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2018-01-23 14:38:43,264 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:43,264 INFO L322 BasicCegarLoop]: trace histogram [92, 80, 80, 80, 80, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:43,264 INFO L371 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:43,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1811475687, now seen corresponding path program 13 times [2018-01-23 14:38:43,265 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:43,265 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:43,266 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:43,266 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:38:43,266 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:43,324 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:38:43,948 INFO L134 CoverageAnalysis]: Checked inductivity of 18470 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 18116 trivial. 0 not checked. [2018-01-23 14:38:43,948 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:38:43,948 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 [2018-01-23 14:38:43,953 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:38:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:44,075 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:38:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 18470 backedges. 10700 proven. 198 refuted. 0 times theorem prover too weak. 7572 trivial. 0 not checked. [2018-01-23 14:38:44,476 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:38:44,477 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 22] total 35 [2018-01-23 14:38:44,477 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-23 14:38:44,478 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-23 14:38:44,478 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=963, Unknown=0, NotChecked=0, Total=1190 [2018-01-23 14:38:44,478 INFO L87 Difference]: Start difference. First operand 407 states and 458 transitions. Second operand 35 states. [2018-01-23 14:38:45,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:45,875 INFO L93 Difference]: Finished difference Result 965 states and 1099 transitions. [2018-01-23 14:38:45,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-01-23 14:38:45,876 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 552 [2018-01-23 14:38:45,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:45,882 INFO L225 Difference]: With dead ends: 965 [2018-01-23 14:38:45,882 INFO L226 Difference]: Without dead ends: 806 [2018-01-23 14:38:45,884 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=549, Invalid=2643, Unknown=0, NotChecked=0, Total=3192 [2018-01-23 14:38:45,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2018-01-23 14:38:45,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 472. [2018-01-23 14:38:45,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2018-01-23 14:38:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 528 transitions. [2018-01-23 14:38:45,925 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 528 transitions. Word has length 552 [2018-01-23 14:38:45,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:45,926 INFO L432 AbstractCegarLoop]: Abstraction has 472 states and 528 transitions. [2018-01-23 14:38:45,926 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-01-23 14:38:45,926 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 528 transitions. [2018-01-23 14:38:45,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2018-01-23 14:38:45,931 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:45,931 INFO L322 BasicCegarLoop]: trace histogram [106, 93, 93, 93, 93, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:45,932 INFO L371 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:45,932 INFO L82 PathProgramCache]: Analyzing trace with hash 187517270, now seen corresponding path program 14 times [2018-01-23 14:38:45,932 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:45,932 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:45,933 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:45,933 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:38:45,933 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:45,993 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:38:46,927 INFO L134 CoverageAnalysis]: Checked inductivity of 24692 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 24276 trivial. 0 not checked. [2018-01-23 14:38:46,927 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:38:46,927 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 [2018-01-23 14:38:46,935 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-23 14:38:46,983 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:47,072 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:47,092 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:38:47,104 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:38:47,648 INFO L134 CoverageAnalysis]: Checked inductivity of 24692 backedges. 14183 proven. 156 refuted. 0 times theorem prover too weak. 10353 trivial. 0 not checked. [2018-01-23 14:38:47,682 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:38:47,683 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20] total 34 [2018-01-23 14:38:47,683 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-01-23 14:38:47,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-01-23 14:38:47,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=901, Unknown=0, NotChecked=0, Total=1122 [2018-01-23 14:38:47,684 INFO L87 Difference]: Start difference. First operand 472 states and 528 transitions. Second operand 34 states. [2018-01-23 14:38:49,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:49,471 INFO L93 Difference]: Finished difference Result 908 states and 1009 transitions. [2018-01-23 14:38:49,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-23 14:38:49,471 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 628 [2018-01-23 14:38:49,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:49,475 INFO L225 Difference]: With dead ends: 908 [2018-01-23 14:38:49,475 INFO L226 Difference]: Without dead ends: 737 [2018-01-23 14:38:49,478 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 611 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=550, Invalid=2530, Unknown=0, NotChecked=0, Total=3080 [2018-01-23 14:38:49,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2018-01-23 14:38:49,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 473. [2018-01-23 14:38:49,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-01-23 14:38:49,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 529 transitions. [2018-01-23 14:38:49,521 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 529 transitions. Word has length 628 [2018-01-23 14:38:49,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:49,522 INFO L432 AbstractCegarLoop]: Abstraction has 473 states and 529 transitions. [2018-01-23 14:38:49,522 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-01-23 14:38:49,522 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 529 transitions. [2018-01-23 14:38:49,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2018-01-23 14:38:49,529 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:49,530 INFO L322 BasicCegarLoop]: trace histogram [118, 104, 104, 104, 104, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:49,530 INFO L371 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:49,530 INFO L82 PathProgramCache]: Analyzing trace with hash -658584109, now seen corresponding path program 15 times [2018-01-23 14:38:49,530 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:49,531 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:49,531 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:49,531 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:38:49,532 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:49,598 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:38:50,492 INFO L134 CoverageAnalysis]: Checked inductivity of 30721 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 30238 trivial. 0 not checked. [2018-01-23 14:38:50,492 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:38:50,492 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 [2018-01-23 14:38:50,498 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-23 14:38:50,546 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:50,551 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:50,556 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:50,562 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:50,570 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:50,577 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:50,584 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:50,595 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:50,605 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:50,617 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:50,628 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:50,643 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:38:50,645 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:38:50,658 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:38:51,088 INFO L134 CoverageAnalysis]: Checked inductivity of 30721 backedges. 5267 proven. 245 refuted. 0 times theorem prover too weak. 25209 trivial. 0 not checked. [2018-01-23 14:38:51,109 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:38:51,109 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 29 [2018-01-23 14:38:51,110 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-23 14:38:51,110 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-23 14:38:51,110 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2018-01-23 14:38:51,110 INFO L87 Difference]: Start difference. First operand 473 states and 529 transitions. Second operand 29 states. [2018-01-23 14:38:51,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:51,729 INFO L93 Difference]: Finished difference Result 1077 states and 1229 transitions. [2018-01-23 14:38:51,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-23 14:38:51,730 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 694 [2018-01-23 14:38:51,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:51,735 INFO L225 Difference]: With dead ends: 1077 [2018-01-23 14:38:51,736 INFO L226 Difference]: Without dead ends: 1008 [2018-01-23 14:38:51,738 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=369, Invalid=1191, Unknown=0, NotChecked=0, Total=1560 [2018-01-23 14:38:51,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2018-01-23 14:38:51,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 551. [2018-01-23 14:38:51,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2018-01-23 14:38:51,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 624 transitions. [2018-01-23 14:38:51,790 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 624 transitions. Word has length 694 [2018-01-23 14:38:51,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:51,791 INFO L432 AbstractCegarLoop]: Abstraction has 551 states and 624 transitions. [2018-01-23 14:38:51,791 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-23 14:38:51,791 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 624 transitions. [2018-01-23 14:38:51,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2018-01-23 14:38:51,799 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:51,799 INFO L322 BasicCegarLoop]: trace histogram [135, 120, 120, 120, 120, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:51,799 INFO L371 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:51,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1887335666, now seen corresponding path program 16 times [2018-01-23 14:38:51,800 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:51,800 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:51,801 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:51,801 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:38:51,801 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:51,872 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:38:52,881 INFO L134 CoverageAnalysis]: Checked inductivity of 40485 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 39930 trivial. 0 not checked. [2018-01-23 14:38:52,881 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:38:52,881 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 [2018-01-23 14:38:52,887 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-23 14:38:53,025 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:38:53,040 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:38:53,823 INFO L134 CoverageAnalysis]: Checked inductivity of 40485 backedges. 23044 proven. 297 refuted. 0 times theorem prover too weak. 17144 trivial. 0 not checked. [2018-01-23 14:38:53,845 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:38:53,845 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 26] total 42 [2018-01-23 14:38:53,846 INFO L409 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-01-23 14:38:53,846 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-01-23 14:38:53,846 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2018-01-23 14:38:53,847 INFO L87 Difference]: Start difference. First operand 551 states and 624 transitions. Second operand 42 states. [2018-01-23 14:38:55,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:55,082 INFO L93 Difference]: Finished difference Result 1314 states and 1498 transitions. [2018-01-23 14:38:55,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-01-23 14:38:55,083 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 785 [2018-01-23 14:38:55,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:55,086 INFO L225 Difference]: With dead ends: 1314 [2018-01-23 14:38:55,086 INFO L226 Difference]: Without dead ends: 1122 [2018-01-23 14:38:55,088 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 829 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=788, Invalid=3904, Unknown=0, NotChecked=0, Total=4692 [2018-01-23 14:38:55,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2018-01-23 14:38:55,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 626. [2018-01-23 14:38:55,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2018-01-23 14:38:55,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 705 transitions. [2018-01-23 14:38:55,145 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 705 transitions. Word has length 785 [2018-01-23 14:38:55,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:55,146 INFO L432 AbstractCegarLoop]: Abstraction has 626 states and 705 transitions. [2018-01-23 14:38:55,146 INFO L433 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-01-23 14:38:55,146 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 705 transitions. [2018-01-23 14:38:55,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 877 [2018-01-23 14:38:55,155 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:55,156 INFO L322 BasicCegarLoop]: trace histogram [152, 136, 136, 136, 136, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:55,156 INFO L371 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:55,156 INFO L82 PathProgramCache]: Analyzing trace with hash -2068151501, now seen corresponding path program 17 times [2018-01-23 14:38:55,157 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:55,157 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:55,158 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:55,158 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:38:55,158 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:55,236 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:38:56,378 INFO L134 CoverageAnalysis]: Checked inductivity of 51604 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 50972 trivial. 0 not checked. [2018-01-23 14:38:56,378 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:38:56,378 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 [2018-01-23 14:38:56,383 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-23 14:38:56,429 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:56,430 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:56,431 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:56,433 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:56,434 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:56,437 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:56,439 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:56,440 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:56,445 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:56,451 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:56,458 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:56,466 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:56,475 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:56,486 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:56,501 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:56,515 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:56,532 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:56,549 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:56,566 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:56,585 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:38:56,588 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:38:56,605 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:38:57,501 INFO L134 CoverageAnalysis]: Checked inductivity of 51604 backedges. 29044 proven. 1348 refuted. 0 times theorem prover too weak. 21212 trivial. 0 not checked. [2018-01-23 14:38:57,523 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:38:57,523 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 27] total 44 [2018-01-23 14:38:57,524 INFO L409 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-01-23 14:38:57,524 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-01-23 14:38:57,525 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1577, Unknown=0, NotChecked=0, Total=1892 [2018-01-23 14:38:57,525 INFO L87 Difference]: Start difference. First operand 626 states and 705 transitions. Second operand 44 states. [2018-01-23 14:38:59,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:59,177 INFO L93 Difference]: Finished difference Result 1156 states and 1292 transitions. [2018-01-23 14:38:59,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-01-23 14:38:59,177 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 876 [2018-01-23 14:38:59,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:59,181 INFO L225 Difference]: With dead ends: 1156 [2018-01-23 14:38:59,181 INFO L226 Difference]: Without dead ends: 952 [2018-01-23 14:38:59,186 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 953 GetRequests, 868 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1720 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1094, Invalid=6388, Unknown=0, NotChecked=0, Total=7482 [2018-01-23 14:38:59,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2018-01-23 14:38:59,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 627. [2018-01-23 14:38:59,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2018-01-23 14:38:59,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 706 transitions. [2018-01-23 14:38:59,243 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 706 transitions. Word has length 876 [2018-01-23 14:38:59,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:59,243 INFO L432 AbstractCegarLoop]: Abstraction has 627 states and 706 transitions. [2018-01-23 14:38:59,243 INFO L433 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-01-23 14:38:59,244 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 706 transitions. [2018-01-23 14:38:59,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2018-01-23 14:38:59,254 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:59,255 INFO L322 BasicCegarLoop]: trace histogram [166, 149, 149, 149, 149, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:59,255 INFO L371 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:59,255 INFO L82 PathProgramCache]: Analyzing trace with hash -478055978, now seen corresponding path program 18 times [2018-01-23 14:38:59,255 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:59,256 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:59,257 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:59,257 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:38:59,257 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:59,336 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 61726 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 61012 trivial. 0 not checked. [2018-01-23 14:39:00,708 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:39:00,708 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 [2018-01-23 14:39:00,713 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-23 14:39:00,755 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,760 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,763 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,765 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,769 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,772 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,777 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,780 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,786 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,791 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,797 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,801 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,806 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,810 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,814 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,820 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,827 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,832 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,838 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,844 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,853 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,861 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,869 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,877 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,886 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,895 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,902 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:39:00,904 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:39:00,912 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:39:01,472 INFO L134 CoverageAnalysis]: Checked inductivity of 61726 backedges. 9024 proven. 354 refuted. 0 times theorem prover too weak. 52348 trivial. 0 not checked. [2018-01-23 14:39:01,493 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:39:01,493 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 34 [2018-01-23 14:39:01,494 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-01-23 14:39:01,494 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-01-23 14:39:01,494 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=826, Unknown=0, NotChecked=0, Total=1122 [2018-01-23 14:39:01,494 INFO L87 Difference]: Start difference. First operand 627 states and 706 transitions. Second operand 34 states. [2018-01-23 14:39:02,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:39:02,142 INFO L93 Difference]: Finished difference Result 1455 states and 1666 transitions. [2018-01-23 14:39:02,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-01-23 14:39:02,142 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 952 [2018-01-23 14:39:02,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:39:02,148 INFO L225 Difference]: With dead ends: 1455 [2018-01-23 14:39:02,149 INFO L226 Difference]: Without dead ends: 1374 [2018-01-23 14:39:02,151 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 984 GetRequests, 939 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2018-01-23 14:39:02,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2018-01-23 14:39:02,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 715. [2018-01-23 14:39:02,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 715 states. [2018-01-23 14:39:02,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 814 transitions. [2018-01-23 14:39:02,218 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 814 transitions. Word has length 952 [2018-01-23 14:39:02,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:39:02,219 INFO L432 AbstractCegarLoop]: Abstraction has 715 states and 814 transitions. [2018-01-23 14:39:02,219 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-01-23 14:39:02,219 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 814 transitions. [2018-01-23 14:39:02,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1059 [2018-01-23 14:39:02,231 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:02,231 INFO L322 BasicCegarLoop]: trace histogram [186, 168, 168, 168, 168, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:39:02,231 INFO L371 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:39:02,232 INFO L82 PathProgramCache]: Analyzing trace with hash 736116577, now seen corresponding path program 19 times [2018-01-23 14:39:02,232 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:02,232 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:02,233 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:02,233 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:39:02,233 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:02,308 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:03,878 INFO L134 CoverageAnalysis]: Checked inductivity of 77907 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 77106 trivial. 0 not checked. [2018-01-23 14:39:03,878 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:39:03,903 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 [2018-01-23 14:39:03,908 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:39:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:04,113 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:39:04,926 INFO L134 CoverageAnalysis]: Checked inductivity of 77907 backedges. 43718 proven. 416 refuted. 0 times theorem prover too weak. 33773 trivial. 0 not checked. [2018-01-23 14:39:04,966 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:39:04,966 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 30] total 49 [2018-01-23 14:39:04,967 INFO L409 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-01-23 14:39:04,968 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-01-23 14:39:04,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=436, Invalid=1916, Unknown=0, NotChecked=0, Total=2352 [2018-01-23 14:39:04,969 INFO L87 Difference]: Start difference. First operand 715 states and 814 transitions. Second operand 49 states. [2018-01-23 14:39:06,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:39:06,226 INFO L93 Difference]: Finished difference Result 1715 states and 1957 transitions. [2018-01-23 14:39:06,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-01-23 14:39:06,226 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 1058 [2018-01-23 14:39:06,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:39:06,231 INFO L225 Difference]: With dead ends: 1715 [2018-01-23 14:39:06,231 INFO L226 Difference]: Without dead ends: 1490 [2018-01-23 14:39:06,233 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 1110 GetRequests, 1031 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1442 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1070, Invalid=5410, Unknown=0, NotChecked=0, Total=6480 [2018-01-23 14:39:06,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2018-01-23 14:39:06,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 800. [2018-01-23 14:39:06,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 800 states. [2018-01-23 14:39:06,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 906 transitions. [2018-01-23 14:39:06,310 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 906 transitions. Word has length 1058 [2018-01-23 14:39:06,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:39:06,311 INFO L432 AbstractCegarLoop]: Abstraction has 800 states and 906 transitions. [2018-01-23 14:39:06,311 INFO L433 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-01-23 14:39:06,311 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 906 transitions. [2018-01-23 14:39:06,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1165 [2018-01-23 14:39:06,324 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:39:06,325 INFO L322 BasicCegarLoop]: trace histogram [206, 187, 187, 187, 187, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:39:06,325 INFO L371 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:39:06,325 INFO L82 PathProgramCache]: Analyzing trace with hash 226934198, now seen corresponding path program 20 times [2018-01-23 14:39:06,325 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:39:06,325 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:39:06,326 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:06,326 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:39:06,326 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:39:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:39:06,409 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:39:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 95980 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 95087 trivial. 0 not checked. [2018-01-23 14:39:08,303 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:39:08,303 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 [2018-01-23 14:39:08,308 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-23 14:39:08,356 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:08,456 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:39:08,476 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:39:08,487 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:39:09,320 INFO L134 CoverageAnalysis]: Checked inductivity of 95980 backedges. 53565 proven. 354 refuted. 0 times theorem prover too weak. 42061 trivial. 0 not checked. [2018-01-23 14:39:09,341 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:39:09,342 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 28] total 48 [2018-01-23 14:39:09,342 INFO L409 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-01-23 14:39:09,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-01-23 14:39:09,343 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=428, Invalid=1828, Unknown=0, NotChecked=0, Total=2256 [2018-01-23 14:39:09,343 INFO L87 Difference]: Start difference. First operand 800 states and 906 transitions. Second operand 48 states. Received shutdown request... [2018-01-23 14:39:09,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-23 14:39:09,378 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-23 14:39:09,380 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:39:09,381 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:39:09,381 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:39:09,381 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:39:09,381 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:39:09,381 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:39:09,381 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:39:09,381 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-23 14:39:09,381 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:39:09,382 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-23 14:39:09,383 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-23 14:39:09,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.01 02:39:09 BoogieIcfgContainer [2018-01-23 14:39:09,384 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-23 14:39:09,385 INFO L168 Benchmark]: Toolchain (without parser) took 39426.05 ms. Allocated memory was 302.5 MB in the beginning and 2.0 GB in the end (delta: 1.7 GB). Free memory was 261.8 MB in the beginning and 1.1 GB in the end (delta: -844.3 MB). Peak memory consumption was 820.8 MB. Max. memory is 5.3 GB. [2018-01-23 14:39:09,387 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 302.5 MB. Free memory is still 266.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-23 14:39:09,387 INFO L168 Benchmark]: CACSL2BoogieTranslator took 205.89 ms. Allocated memory is still 302.5 MB. Free memory was 260.8 MB in the beginning and 252.9 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. [2018-01-23 14:39:09,387 INFO L168 Benchmark]: Boogie Preprocessor took 32.09 ms. Allocated memory is still 302.5 MB. Free memory was 252.9 MB in the beginning and 250.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-23 14:39:09,388 INFO L168 Benchmark]: RCFGBuilder took 241.08 ms. Allocated memory is still 302.5 MB. Free memory was 250.8 MB in the beginning and 236.2 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. [2018-01-23 14:39:09,388 INFO L168 Benchmark]: TraceAbstraction took 38937.91 ms. Allocated memory was 302.5 MB in the beginning and 2.0 GB in the end (delta: 1.7 GB). Free memory was 236.2 MB in the beginning and 1.1 GB in the end (delta: -869.9 MB). Peak memory consumption was 795.2 MB. Max. memory is 5.3 GB. [2018-01-23 14:39:09,390 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 302.5 MB. Free memory is still 266.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 205.89 ms. Allocated memory is still 302.5 MB. Free memory was 260.8 MB in the beginning and 252.9 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 32.09 ms. Allocated memory is still 302.5 MB. Free memory was 252.9 MB in the beginning and 250.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 241.08 ms. Allocated memory is still 302.5 MB. Free memory was 250.8 MB in the beginning and 236.2 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 38937.91 ms. Allocated memory was 302.5 MB in the beginning and 2.0 GB in the end (delta: 1.7 GB). Free memory was 236.2 MB in the beginning and 1.1 GB in the end (delta: -869.9 MB). Peak memory consumption was 795.2 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 4 procedures, 41 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 14]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: fooErr0EnsuresViolation CFG has 4 procedures, 41 locations, 4 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 1). Cancelled while BasicCegarLoop was constructing difference of abstraction (800states) and interpolant automaton (currently 4 states, 48 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 48 known predicates. - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 41 locations, 4 error locations. TIMEOUT Result, 38.4s OverallTime, 23 OverallIterations, 206 TraceHistogramMax, 14.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1205 SDtfs, 7443 SDslu, 13022 SDs, 0 SdLazy, 13842 SolverSat, 1759 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9752 GetRequests, 8988 SyntacticMatches, 0 SemanticMatches, 763 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8809 ImplicationChecksByTransitivity, 10.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=800occurred in iteration=22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 22 MinimizatonAttempts, 4523 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 17.6s InterpolantComputationTime, 18459 NumberOfCodeBlocks, 16509 NumberOfCodeBlocksAsserted, 150 NumberOfCheckSat, 18416 ConstructedInterpolants, 0 QuantifiedInterpolants, 18189319 SizeOfPredicates, 60 NumberOfNonLiveVariables, 12726 ConjunctsInSsa, 320 ConjunctsInUnsatCore, 43 InterpolantComputations, 3 PerfectInterpolantSequences, 873070/883680 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 23]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 23). Cancelled while IsEmpty was searching accepting run (input had 41 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 41 locations, 4 error locations. TIMEOUT Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_false-valid-deref-read.c_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-23_14-39-09-399.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_false-valid-deref-read.c_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-23_14-39-09-399.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_false-valid-deref-read.c_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-23_14-39-09-399.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_false-valid-deref-read.c_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-23_14-39-09-399.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_false-valid-deref-read.c_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-23_14-39-09-399.csv Completed graceful shutdown