java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:35:22,824 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:35:22,827 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:35:22,846 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:35:22,847 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:35:22,849 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:35:22,850 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:35:22,853 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:35:22,856 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:35:22,857 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:35:22,858 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:35:22,858 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:35:22,866 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:35:22,867 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:35:22,871 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:35:22,872 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:35:22,873 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:35:22,874 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:35:22,879 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:35:22,882 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:35:22,885 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:35:22,886 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:35:22,890 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 11:35:22,890 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 11:35:22,891 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 11:35:22,895 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 11:35:22,896 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 11:35:22,897 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 11:35:22,898 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 11:35:22,900 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 11:35:22,901 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 11:35:22,903 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 11:35:22,903 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:35:22,903 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:35:22,905 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:35:22,906 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:35:22,906 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 11:35:22,937 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:35:22,937 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:35:22,939 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:35:22,939 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:35:22,939 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:35:22,939 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:35:22,940 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:35:22,940 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:35:22,940 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:35:22,940 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:35:22,941 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:35:22,941 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:35:22,942 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:35:22,942 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:35:22,943 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:35:22,943 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:35:22,944 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:35:22,944 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:35:22,944 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:35:22,944 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:35:22,944 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:35:22,945 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:35:22,945 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:35:22,945 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:35:22,945 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:35:22,946 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:35:22,947 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:35:22,947 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:35:22,947 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:35:22,947 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:35:22,947 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:35:22,948 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:35:22,948 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:35:22,948 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:35:23,010 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:35:23,025 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:35:23,030 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:35:23,032 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:35:23,032 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:35:23,033 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c [2018-09-18 11:35:23,382 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eb9e4d56/2cde09e09dcb44698d4d72d6f1c85122/FLAGe6361b08c [2018-09-18 11:35:23,910 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:35:23,911 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c [2018-09-18 11:35:23,945 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eb9e4d56/2cde09e09dcb44698d4d72d6f1c85122/FLAGe6361b08c [2018-09-18 11:35:23,967 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eb9e4d56/2cde09e09dcb44698d4d72d6f1c85122 [2018-09-18 11:35:23,979 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:35:23,984 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:35:23,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:35:23,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:35:23,995 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:35:23,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:35:23" (1/1) ... [2018-09-18 11:35:24,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ed21f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:23, skipping insertion in model container [2018-09-18 11:35:24,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:35:23" (1/1) ... [2018-09-18 11:35:24,014 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:35:25,474 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:35:25,494 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:35:26,060 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:35:26,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:26 WrapperNode [2018-09-18 11:35:26,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:35:26,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:35:26,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:35:26,308 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:35:26,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:26" (1/1) ... [2018-09-18 11:35:26,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:26" (1/1) ... [2018-09-18 11:35:26,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:35:26,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:35:26,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:35:26,593 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:35:27,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:26" (1/1) ... [2018-09-18 11:35:27,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:26" (1/1) ... [2018-09-18 11:35:27,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:26" (1/1) ... [2018-09-18 11:35:27,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:26" (1/1) ... [2018-09-18 11:35:27,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:26" (1/1) ... [2018-09-18 11:35:27,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:26" (1/1) ... [2018-09-18 11:35:27,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:26" (1/1) ... [2018-09-18 11:35:27,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:35:27,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:35:27,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:35:27,453 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:35:27,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:26" (1/1) ... No working directory specified, using /storage/repos/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 [2018-09-18 11:35:27,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:35:27,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:35:27,528 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 11:35:27,528 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 11:35:27,529 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 11:35:27,529 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 11:35:27,529 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 11:35:27,529 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 11:35:27,530 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:35:27,530 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:35:27,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:35:27,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:35:27,531 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:35:27,531 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:35:38,865 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:35:38,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:35:38 BoogieIcfgContainer [2018-09-18 11:35:38,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:35:38,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:35:38,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:35:38,870 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:35:38,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:35:23" (1/3) ... [2018-09-18 11:35:38,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca8117d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:35:38, skipping insertion in model container [2018-09-18 11:35:38,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:35:26" (2/3) ... [2018-09-18 11:35:38,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca8117d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:35:38, skipping insertion in model container [2018-09-18 11:35:38,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:35:38" (3/3) ... [2018-09-18 11:35:38,874 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label54_true-unreach-call.c [2018-09-18 11:35:38,884 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:35:38,895 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:35:38,958 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:35:38,959 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:35:38,959 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:35:38,960 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:35:38,960 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:35:38,960 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:35:38,960 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:35:38,960 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:35:38,960 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:35:39,014 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-18 11:35:39,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-18 11:35:39,023 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:35:39,025 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:35:39,027 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:35:39,031 INFO L82 PathProgramCache]: Analyzing trace with hash 2139876300, now seen corresponding path program 1 times [2018-09-18 11:35:39,034 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:35:39,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:39,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:35:39,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:39,084 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:35:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:35:39,503 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:35:39,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:35:39,615 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:35:39,615 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:35:39,616 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:35:39,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:35:39,639 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:35:39,640 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:35:39,643 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-18 11:35:49,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:35:49,632 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-18 11:35:49,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:35:49,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-09-18 11:35:49,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:35:49,684 INFO L225 Difference]: With dead ends: 2446 [2018-09-18 11:35:49,685 INFO L226 Difference]: Without dead ends: 1604 [2018-09-18 11:35:49,700 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:35:49,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-18 11:35:49,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-18 11:35:49,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-18 11:35:49,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-09-18 11:35:49,910 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 40 [2018-09-18 11:35:49,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:35:49,911 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-09-18 11:35:49,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:35:49,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-09-18 11:35:49,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-18 11:35:49,923 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:35:49,924 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2018-09-18 11:35:49,924 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:35:49,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1482898002, now seen corresponding path program 1 times [2018-09-18 11:35:49,925 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:35:49,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:49,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:35:49,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:35:49,927 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:35:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:35:50,274 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:35:50,275 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:35:50,275 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:35:50,275 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:35:50,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:35:50,278 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:35:50,278 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:35:50,278 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-09-18 11:35:59,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:35:59,988 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-09-18 11:35:59,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:35:59,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-09-18 11:35:59,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:36:00,017 INFO L225 Difference]: With dead ends: 4818 [2018-09-18 11:36:00,017 INFO L226 Difference]: Without dead ends: 3220 [2018-09-18 11:36:00,023 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:36:00,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-09-18 11:36:00,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-09-18 11:36:00,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-09-18 11:36:00,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-09-18 11:36:00,124 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 114 [2018-09-18 11:36:00,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:36:00,125 INFO L480 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-09-18 11:36:00,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:36:00,125 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-09-18 11:36:00,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-09-18 11:36:00,128 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:36:00,129 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1] [2018-09-18 11:36:00,129 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:36:00,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1633492773, now seen corresponding path program 1 times [2018-09-18 11:36:00,129 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:36:00,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:00,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:36:00,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:00,131 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:36:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:36:00,469 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:36:00,470 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:36:00,470 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:36:00,470 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:36:00,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:36:00,471 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:36:00,471 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:36:00,472 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-09-18 11:36:14,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:36:14,941 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-09-18 11:36:14,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:36:14,941 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-09-18 11:36:14,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:36:14,991 INFO L225 Difference]: With dead ends: 11148 [2018-09-18 11:36:14,992 INFO L226 Difference]: Without dead ends: 7968 [2018-09-18 11:36:15,008 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:36:15,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-09-18 11:36:15,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-09-18 11:36:15,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-09-18 11:36:15,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-09-18 11:36:15,229 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 119 [2018-09-18 11:36:15,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:36:15,230 INFO L480 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-09-18 11:36:15,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:36:15,230 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-09-18 11:36:15,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-09-18 11:36:15,240 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:36:15,240 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:36:15,240 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:36:15,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1525604427, now seen corresponding path program 1 times [2018-09-18 11:36:15,241 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:36:15,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:15,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:36:15,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:15,246 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:36:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:36:15,455 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:36:15,455 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:36:15,455 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:36:15,455 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:36:15,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:36:15,456 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:36:15,456 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:36:15,456 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-09-18 11:36:28,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:36:28,521 INFO L93 Difference]: Finished difference Result 22224 states and 38004 transitions. [2018-09-18 11:36:28,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:36:28,521 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-09-18 11:36:28,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:36:28,587 INFO L225 Difference]: With dead ends: 22224 [2018-09-18 11:36:28,587 INFO L226 Difference]: Without dead ends: 14306 [2018-09-18 11:36:28,625 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:36:28,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14306 states. [2018-09-18 11:36:28,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14306 to 14219. [2018-09-18 11:36:28,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14219 states. [2018-09-18 11:36:28,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 21550 transitions. [2018-09-18 11:36:28,993 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 21550 transitions. Word has length 127 [2018-09-18 11:36:28,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:36:28,994 INFO L480 AbstractCegarLoop]: Abstraction has 14219 states and 21550 transitions. [2018-09-18 11:36:28,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:36:28,994 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 21550 transitions. [2018-09-18 11:36:28,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-09-18 11:36:28,999 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:36:28,999 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2018-09-18 11:36:29,003 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:36:29,003 INFO L82 PathProgramCache]: Analyzing trace with hash -654123146, now seen corresponding path program 1 times [2018-09-18 11:36:29,003 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:36:29,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:29,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:36:29,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:29,004 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:36:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:36:29,500 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:36:29,501 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:36:29,501 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:36:29,501 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:36:29,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:36:29,502 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:36:29,503 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:36:29,503 INFO L87 Difference]: Start difference. First operand 14219 states and 21550 transitions. Second operand 6 states. [2018-09-18 11:36:54,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:36:54,186 INFO L93 Difference]: Finished difference Result 56456 states and 96008 transitions. [2018-09-18 11:36:54,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-18 11:36:54,187 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-09-18 11:36:54,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:36:54,417 INFO L225 Difference]: With dead ends: 56456 [2018-09-18 11:36:54,417 INFO L226 Difference]: Without dead ends: 42243 [2018-09-18 11:36:54,523 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:36:54,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42243 states. [2018-09-18 11:36:55,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42243 to 42003. [2018-09-18 11:36:55,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42003 states. [2018-09-18 11:36:55,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42003 states to 42003 states and 63012 transitions. [2018-09-18 11:36:55,755 INFO L78 Accepts]: Start accepts. Automaton has 42003 states and 63012 transitions. Word has length 144 [2018-09-18 11:36:55,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:36:55,755 INFO L480 AbstractCegarLoop]: Abstraction has 42003 states and 63012 transitions. [2018-09-18 11:36:55,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:36:55,755 INFO L276 IsEmpty]: Start isEmpty. Operand 42003 states and 63012 transitions. [2018-09-18 11:36:55,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-09-18 11:36:55,761 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:36:55,761 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:36:55,762 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:36:55,762 INFO L82 PathProgramCache]: Analyzing trace with hash -271525473, now seen corresponding path program 1 times [2018-09-18 11:36:55,762 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:36:55,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:55,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:36:55,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:36:55,763 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:36:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:36:56,038 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:36:56,388 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:36:56,388 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:36:56,389 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:36:56,389 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:36:56,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:36:56,389 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:36:56,390 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:36:56,390 INFO L87 Difference]: Start difference. First operand 42003 states and 63012 transitions. Second operand 6 states. [2018-09-18 11:37:10,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:37:10,124 INFO L93 Difference]: Finished difference Result 104554 states and 165714 transitions. [2018-09-18 11:37:10,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:37:10,125 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2018-09-18 11:37:10,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:37:10,397 INFO L225 Difference]: With dead ends: 104554 [2018-09-18 11:37:10,397 INFO L226 Difference]: Without dead ends: 62557 [2018-09-18 11:37:10,630 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:37:10,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62557 states. [2018-09-18 11:37:12,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62557 to 62315. [2018-09-18 11:37:12,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62315 states. [2018-09-18 11:37:12,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62315 states to 62315 states and 87587 transitions. [2018-09-18 11:37:12,690 INFO L78 Accepts]: Start accepts. Automaton has 62315 states and 87587 transitions. Word has length 165 [2018-09-18 11:37:12,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:37:12,694 INFO L480 AbstractCegarLoop]: Abstraction has 62315 states and 87587 transitions. [2018-09-18 11:37:12,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:37:12,694 INFO L276 IsEmpty]: Start isEmpty. Operand 62315 states and 87587 transitions. [2018-09-18 11:37:12,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-09-18 11:37:12,704 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:37:12,705 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:37:12,705 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:37:12,705 INFO L82 PathProgramCache]: Analyzing trace with hash 708461889, now seen corresponding path program 1 times [2018-09-18 11:37:12,705 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:37:12,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:37:12,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:12,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:37:12,708 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:37:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:13,092 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 66 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:37:13,093 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:37:13,093 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/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 [2018-09-18 11:37:13,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:13,121 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:37:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:13,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:37:13,519 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-09-18 11:37:13,519 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:37:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 66 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:37:14,121 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:37:14,121 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-09-18 11:37:14,122 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:37:14,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:37:14,123 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:37:14,123 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:37:14,124 INFO L87 Difference]: Start difference. First operand 62315 states and 87587 transitions. Second operand 5 states. [2018-09-18 11:37:26,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:37:26,476 INFO L93 Difference]: Finished difference Result 181037 states and 270188 transitions. [2018-09-18 11:37:26,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:37:26,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2018-09-18 11:37:26,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:37:27,274 INFO L225 Difference]: With dead ends: 181037 [2018-09-18 11:37:27,275 INFO L226 Difference]: Without dead ends: 118728 [2018-09-18 11:37:27,540 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:37:27,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118728 states. [2018-09-18 11:37:31,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118728 to 115963. [2018-09-18 11:37:31,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115963 states. [2018-09-18 11:37:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115963 states to 115963 states and 160637 transitions. [2018-09-18 11:37:31,830 INFO L78 Accepts]: Start accepts. Automaton has 115963 states and 160637 transitions. Word has length 199 [2018-09-18 11:37:31,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:37:31,831 INFO L480 AbstractCegarLoop]: Abstraction has 115963 states and 160637 transitions. [2018-09-18 11:37:31,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:37:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand 115963 states and 160637 transitions. [2018-09-18 11:37:31,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-09-18 11:37:31,838 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:37:31,838 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:37:31,839 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:37:31,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1404633533, now seen corresponding path program 1 times [2018-09-18 11:37:31,839 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:37:31,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:37:31,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:31,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:37:31,841 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:37:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:32,167 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:37:32,168 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:37:32,168 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/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 [2018-09-18 11:37:32,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:32,177 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:37:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:32,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:37:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:37:32,432 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:37:32,587 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:37:32,609 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:37:32,609 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:37:32,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:32,626 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:37:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:32,799 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:37:33,012 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:37:33,012 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:37:33,209 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:37:33,212 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:37:33,212 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:37:33,212 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:37:33,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:37:33,214 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:37:33,214 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:37:33,215 INFO L87 Difference]: Start difference. First operand 115963 states and 160637 transitions. Second operand 9 states. [2018-09-18 11:37:54,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:37:54,672 INFO L93 Difference]: Finished difference Result 265700 states and 446476 transitions. [2018-09-18 11:37:54,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-18 11:37:54,673 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 241 [2018-09-18 11:37:54,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:37:55,605 INFO L225 Difference]: With dead ends: 265700 [2018-09-18 11:37:55,605 INFO L226 Difference]: Without dead ends: 127373 [2018-09-18 11:37:55,954 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 964 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-09-18 11:37:56,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127373 states. [2018-09-18 11:37:59,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127373 to 125243. [2018-09-18 11:37:59,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125243 states. [2018-09-18 11:38:00,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125243 states to 125243 states and 189195 transitions. [2018-09-18 11:38:00,542 INFO L78 Accepts]: Start accepts. Automaton has 125243 states and 189195 transitions. Word has length 241 [2018-09-18 11:38:00,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:38:00,542 INFO L480 AbstractCegarLoop]: Abstraction has 125243 states and 189195 transitions. [2018-09-18 11:38:00,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:38:00,542 INFO L276 IsEmpty]: Start isEmpty. Operand 125243 states and 189195 transitions. [2018-09-18 11:38:00,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-09-18 11:38:00,554 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:38:00,555 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:38:00,555 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:38:00,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1911097196, now seen corresponding path program 1 times [2018-09-18 11:38:00,555 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:38:00,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:38:00,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:38:00,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:38:00,556 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:38:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:38:00,924 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:38:00,924 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:38:00,925 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/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 [2018-09-18 11:38:00,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:38:00,934 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:38:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:38:01,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:38:01,257 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:38:01,257 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:38:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:38:01,419 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:38:01,419 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:38:01,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:38:01,437 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:38:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:38:01,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:38:01,695 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:38:01,695 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:38:01,823 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:38:01,825 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:38:01,825 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:38:01,826 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:38:01,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:38:01,827 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:38:01,827 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:38:01,827 INFO L87 Difference]: Start difference. First operand 125243 states and 189195 transitions. Second operand 9 states. [2018-09-18 11:38:26,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:38:26,532 INFO L93 Difference]: Finished difference Result 307417 states and 632397 transitions. [2018-09-18 11:38:26,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-18 11:38:26,533 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 302 [2018-09-18 11:38:26,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:38:28,576 INFO L225 Difference]: With dead ends: 307417 [2018-09-18 11:38:28,576 INFO L226 Difference]: Without dead ends: 182185 [2018-09-18 11:38:28,974 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1224 GetRequests, 1203 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-09-18 11:38:29,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182185 states. [2018-09-18 11:38:33,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182185 to 179512. [2018-09-18 11:38:33,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179512 states. [2018-09-18 11:38:35,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179512 states to 179512 states and 332952 transitions. [2018-09-18 11:38:35,287 INFO L78 Accepts]: Start accepts. Automaton has 179512 states and 332952 transitions. Word has length 302 [2018-09-18 11:38:35,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:38:35,287 INFO L480 AbstractCegarLoop]: Abstraction has 179512 states and 332952 transitions. [2018-09-18 11:38:35,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:38:35,287 INFO L276 IsEmpty]: Start isEmpty. Operand 179512 states and 332952 transitions. [2018-09-18 11:38:35,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-09-18 11:38:35,325 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:38:35,325 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:38:35,326 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:38:35,326 INFO L82 PathProgramCache]: Analyzing trace with hash 487983759, now seen corresponding path program 1 times [2018-09-18 11:38:35,326 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:38:35,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:38:35,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:38:35,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:38:35,327 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:38:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:38:35,668 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:38:36,163 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 105 proven. 143 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-18 11:38:36,164 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:38:36,164 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/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 [2018-09-18 11:38:36,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:38:36,180 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:38:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:38:36,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:38:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 286 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-09-18 11:38:36,528 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:38:36,666 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 181 proven. 71 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-18 11:38:36,686 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:38:36,687 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:38:36,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:38:36,702 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:38:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:38:36,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:38:37,166 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-09-18 11:38:37,166 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:38:37,408 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 107 proven. 134 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-18 11:38:37,410 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-18 11:38:37,411 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 13 [2018-09-18 11:38:37,411 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:38:37,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:38:37,412 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:38:37,412 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-18 11:38:37,413 INFO L87 Difference]: Start difference. First operand 179512 states and 332952 transitions. Second operand 5 states. [2018-09-18 11:38:51,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:38:51,027 INFO L93 Difference]: Finished difference Result 364334 states and 741641 transitions. [2018-09-18 11:38:51,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:38:51,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 337 [2018-09-18 11:38:51,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:38:52,268 INFO L225 Difference]: With dead ends: 364334 [2018-09-18 11:38:52,269 INFO L226 Difference]: Without dead ends: 184868 [2018-09-18 11:38:54,145 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1356 GetRequests, 1335 SyntacticMatches, 9 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-09-18 11:38:54,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184868 states. [2018-09-18 11:38:58,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184868 to 184496. [2018-09-18 11:38:58,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184496 states. [2018-09-18 11:39:00,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184496 states to 184496 states and 307976 transitions. [2018-09-18 11:39:00,026 INFO L78 Accepts]: Start accepts. Automaton has 184496 states and 307976 transitions. Word has length 337 [2018-09-18 11:39:00,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:39:00,027 INFO L480 AbstractCegarLoop]: Abstraction has 184496 states and 307976 transitions. [2018-09-18 11:39:00,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:39:00,027 INFO L276 IsEmpty]: Start isEmpty. Operand 184496 states and 307976 transitions. [2018-09-18 11:39:00,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-09-18 11:39:00,055 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:39:00,055 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:39:00,055 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:39:00,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1569390631, now seen corresponding path program 1 times [2018-09-18 11:39:00,056 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:39:00,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:39:00,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:39:00,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:39:00,057 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:39:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:39:00,323 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 193 proven. 78 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-18 11:39:00,323 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:39:00,323 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/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 [2018-09-18 11:39:00,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:39:00,330 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:39:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:39:00,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:39:00,924 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-09-18 11:39:00,924 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:39:01,267 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 193 proven. 78 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-18 11:39:01,287 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:39:01,287 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:39:01,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:39:01,304 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:39:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:39:01,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:39:01,650 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-09-18 11:39:01,650 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:39:01,863 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 193 proven. 78 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-18 11:39:01,865 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:39:01,866 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-18 11:39:01,866 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:39:01,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:39:01,867 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:39:01,867 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2018-09-18 11:39:01,868 INFO L87 Difference]: Start difference. First operand 184496 states and 307976 transitions. Second operand 9 states. Received shutdown request... [2018-09-18 11:39:04,004 WARN L186 SmtUtils]: Removed 4 from assertion stack [2018-09-18 11:39:04,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-18 11:39:04,005 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:39:04,009 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:39:04,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:39:04 BoogieIcfgContainer [2018-09-18 11:39:04,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:39:04,011 INFO L168 Benchmark]: Toolchain (without parser) took 220030.03 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 572.5 MB in the end (delta: 833.6 MB). Peak memory consumption was 4.0 GB. Max. memory is 7.1 GB. [2018-09-18 11:39:04,014 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 11:39:04,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2322.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-18 11:39:04,015 INFO L168 Benchmark]: Boogie Procedure Inliner took 284.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-18 11:39:04,016 INFO L168 Benchmark]: Boogie Preprocessor took 859.43 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 910.7 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-09-18 11:39:04,018 INFO L168 Benchmark]: RCFGBuilder took 11413.93 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 650.2 MB). Peak memory consumption was 650.2 MB. Max. memory is 7.1 GB. [2018-09-18 11:39:04,019 INFO L168 Benchmark]: TraceAbstraction took 205142.77 ms. Allocated memory was 2.4 GB in the beginning and 4.7 GB in the end (delta: 2.2 GB). Free memory was 1.7 GB in the beginning and 572.5 MB in the end (delta: 1.1 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2018-09-18 11:39:04,024 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2322.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 284.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 859.43 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 910.7 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11413.93 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 650.2 MB). Peak memory consumption was 650.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205142.77 ms. Allocated memory was 2.4 GB in the beginning and 4.7 GB in the end (delta: 2.2 GB). Free memory was 1.7 GB in the beginning and 572.5 MB in the end (delta: 1.1 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 111). Cancelled while BasicCegarLoop was constructing difference of abstraction (184496states) and FLOYD_HOARE automaton (currently 14 states, 9 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 9. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 205.0s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 168.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1519 SDtfs, 36719 SDslu, 2070 SDs, 0 SdLazy, 70130 SolverSat, 14693 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 121.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5487 GetRequests, 5342 SyntacticMatches, 25 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184496occurred in iteration=10, 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, 0.0s DumpTime, AutomataMinimizationStatistics: 25.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 8587 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 4824 NumberOfCodeBlocks, 4824 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 7472 ConstructedInterpolants, 0 QuantifiedInterpolants, 5961663 SizeOfPredicates, 5 NumberOfNonLiveVariables, 4766 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 29 InterpolantComputations, 8 PerfectInterpolantSequences, 4814/5570 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label54_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-39-04-038.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label54_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-39-04-038.csv Completed graceful shutdown