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/Problem18_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 12:20:52,034 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 12:20:52,036 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 12:20:52,048 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 12:20:52,049 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 12:20:52,050 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 12:20:52,051 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 12:20:52,054 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 12:20:52,055 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 12:20:52,056 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 12:20:52,059 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 12:20:52,060 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 12:20:52,061 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 12:20:52,064 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 12:20:52,071 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 12:20:52,072 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 12:20:52,073 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 12:20:52,080 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 12:20:52,083 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 12:20:52,085 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 12:20:52,089 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 12:20:52,090 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 12:20:52,096 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 12:20:52,096 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 12:20:52,097 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 12:20:52,098 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 12:20:52,099 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 12:20:52,100 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 12:20:52,101 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 12:20:52,102 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 12:20:52,102 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 12:20:52,103 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 12:20:52,105 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 12:20:52,106 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 12:20:52,107 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 12:20:52,108 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 12:20:52,108 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 12:20:52,137 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 12:20:52,137 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 12:20:52,138 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 12:20:52,138 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 12:20:52,142 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 12:20:52,142 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 12:20:52,142 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 12:20:52,142 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 12:20:52,143 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 12:20:52,143 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 12:20:52,143 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 12:20:52,143 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 12:20:52,144 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 12:20:52,145 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 12:20:52,145 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 12:20:52,145 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 12:20:52,145 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 12:20:52,147 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 12:20:52,147 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 12:20:52,147 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 12:20:52,148 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 12:20:52,148 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 12:20:52,148 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 12:20:52,148 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 12:20:52,149 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:20:52,149 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 12:20:52,149 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 12:20:52,149 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 12:20:52,149 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 12:20:52,150 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 12:20:52,150 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 12:20:52,150 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 12:20:52,150 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 12:20:52,150 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 12:20:52,215 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 12:20:52,231 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 12:20:52,239 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 12:20:52,241 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 12:20:52,241 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 12:20:52,242 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label15_true-unreach-call.c [2018-09-18 12:20:52,604 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/334323ed8/57fba2eaddbc4cc4a02f3b7c778b1c72/FLAG133282c87 [2018-09-18 12:20:52,992 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 12:20:52,993 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label15_true-unreach-call.c [2018-09-18 12:20:53,017 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/334323ed8/57fba2eaddbc4cc4a02f3b7c778b1c72/FLAG133282c87 [2018-09-18 12:20:53,034 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/334323ed8/57fba2eaddbc4cc4a02f3b7c778b1c72 [2018-09-18 12:20:53,046 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 12:20:53,050 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 12:20:53,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 12:20:53,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 12:20:53,058 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 12:20:53,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:20:53" (1/1) ... [2018-09-18 12:20:53,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a64aa8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:20:53, skipping insertion in model container [2018-09-18 12:20:53,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:20:53" (1/1) ... [2018-09-18 12:20:53,076 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 12:20:54,229 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:20:54,250 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 12:20:54,677 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:20:54,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:20:54 WrapperNode [2018-09-18 12:20:54,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 12:20:54,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 12:20:54,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 12:20:54,832 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 12:20:54,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:20:54" (1/1) ... [2018-09-18 12:20:54,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:20:54" (1/1) ... [2018-09-18 12:20:55,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 12:20:55,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 12:20:55,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 12:20:55,045 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 12:20:55,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:20:54" (1/1) ... [2018-09-18 12:20:55,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:20:54" (1/1) ... [2018-09-18 12:20:55,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:20:54" (1/1) ... [2018-09-18 12:20:55,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:20:54" (1/1) ... [2018-09-18 12:20:55,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:20:54" (1/1) ... [2018-09-18 12:20:55,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:20:54" (1/1) ... [2018-09-18 12:20:55,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:20:54" (1/1) ... [2018-09-18 12:20:55,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 12:20:55,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 12:20:55,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 12:20:55,667 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 12:20:55,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:20:54" (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 12:20:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 12:20:55,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 12:20:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 12:20:55,746 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 12:20:55,747 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 12:20:55,747 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 12:20:55,747 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 12:20:55,747 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 12:20:55,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 12:20:55,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 12:20:55,748 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 12:20:55,748 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 12:21:03,618 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 12:21:03,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:21:03 BoogieIcfgContainer [2018-09-18 12:21:03,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 12:21:03,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 12:21:03,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 12:21:03,624 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 12:21:03,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:20:53" (1/3) ... [2018-09-18 12:21:03,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4475a53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:21:03, skipping insertion in model container [2018-09-18 12:21:03,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:20:54" (2/3) ... [2018-09-18 12:21:03,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4475a53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:21:03, skipping insertion in model container [2018-09-18 12:21:03,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:21:03" (3/3) ... [2018-09-18 12:21:03,628 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label15_true-unreach-call.c [2018-09-18 12:21:03,639 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 12:21:03,650 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 12:21:03,719 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 12:21:03,720 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 12:21:03,720 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 12:21:03,720 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 12:21:03,720 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 12:21:03,721 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 12:21:03,721 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 12:21:03,721 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 12:21:03,721 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 12:21:03,776 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-09-18 12:21:03,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-18 12:21:03,784 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:21:03,786 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, 1, 1] [2018-09-18 12:21:03,787 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:21:03,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1389400652, now seen corresponding path program 1 times [2018-09-18 12:21:03,793 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:21:03,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:21:03,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:21:03,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:21:03,846 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:21:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:21:04,296 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 12:21:04,299 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:21:04,299 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:21:04,299 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:21:04,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:21:04,322 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:21:04,323 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:21:04,326 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-09-18 12:21:14,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:21:14,764 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-09-18 12:21:14,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:21:14,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-09-18 12:21:14,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:21:14,815 INFO L225 Difference]: With dead ends: 2974 [2018-09-18 12:21:14,816 INFO L226 Difference]: Without dead ends: 2193 [2018-09-18 12:21:14,826 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:21:14,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-09-18 12:21:15,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-09-18 12:21:15,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-09-18 12:21:15,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3677 transitions. [2018-09-18 12:21:15,040 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3677 transitions. Word has length 42 [2018-09-18 12:21:15,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:21:15,041 INFO L480 AbstractCegarLoop]: Abstraction has 2193 states and 3677 transitions. [2018-09-18 12:21:15,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:21:15,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3677 transitions. [2018-09-18 12:21:15,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-09-18 12:21:15,051 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:21:15,054 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, 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] [2018-09-18 12:21:15,055 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:21:15,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1023255202, now seen corresponding path program 1 times [2018-09-18 12:21:15,055 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:21:15,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:21:15,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:21:15,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:21:15,060 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:21:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:21:15,461 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:21:15,648 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:21:15,648 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:21:15,649 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 12:21:15,649 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:21:15,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:21:15,652 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:21:15,652 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 12:21:15,653 INFO L87 Difference]: Start difference. First operand 2193 states and 3677 transitions. Second operand 5 states. [2018-09-18 12:21:24,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:21:24,988 INFO L93 Difference]: Finished difference Result 6600 states and 11248 transitions. [2018-09-18 12:21:24,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:21:24,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2018-09-18 12:21:24,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:21:25,027 INFO L225 Difference]: With dead ends: 6600 [2018-09-18 12:21:25,027 INFO L226 Difference]: Without dead ends: 4413 [2018-09-18 12:21:25,036 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:21:25,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-09-18 12:21:25,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-09-18 12:21:25,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-09-18 12:21:25,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6986 transitions. [2018-09-18 12:21:25,177 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6986 transitions. Word has length 112 [2018-09-18 12:21:25,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:21:25,178 INFO L480 AbstractCegarLoop]: Abstraction has 4378 states and 6986 transitions. [2018-09-18 12:21:25,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:21:25,178 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6986 transitions. [2018-09-18 12:21:25,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-09-18 12:21:25,183 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:21:25,183 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, 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] [2018-09-18 12:21:25,184 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:21:25,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1458733739, now seen corresponding path program 1 times [2018-09-18 12:21:25,185 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:21:25,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:21:25,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:21:25,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:21:25,186 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:21:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:21:25,441 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:21:25,442 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:21:25,442 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:21:25,442 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:21:25,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:21:25,443 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:21:25,443 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:21:25,443 INFO L87 Difference]: Start difference. First operand 4378 states and 6986 transitions. Second operand 6 states. [2018-09-18 12:21:30,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:21:30,576 INFO L93 Difference]: Finished difference Result 11002 states and 17598 transitions. [2018-09-18 12:21:30,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:21:30,578 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-09-18 12:21:30,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:21:30,618 INFO L225 Difference]: With dead ends: 11002 [2018-09-18 12:21:30,618 INFO L226 Difference]: Without dead ends: 6630 [2018-09-18 12:21:30,634 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 12:21:30,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-09-18 12:21:30,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-09-18 12:21:30,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-09-18 12:21:30,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 9022 transitions. [2018-09-18 12:21:30,804 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 9022 transitions. Word has length 139 [2018-09-18 12:21:30,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:21:30,805 INFO L480 AbstractCegarLoop]: Abstraction has 6590 states and 9022 transitions. [2018-09-18 12:21:30,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:21:30,805 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 9022 transitions. [2018-09-18 12:21:30,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-09-18 12:21:30,809 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:21:30,810 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:21:30,810 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:21:30,810 INFO L82 PathProgramCache]: Analyzing trace with hash 2073244197, now seen corresponding path program 1 times [2018-09-18 12:21:30,810 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:21:30,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:21:30,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:21:30,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:21:30,812 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:21:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:21:30,997 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 12:21:30,997 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:21:30,997 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:21:30,998 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:21:30,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:21:30,998 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:21:30,998 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:21:30,999 INFO L87 Difference]: Start difference. First operand 6590 states and 9022 transitions. Second operand 4 states. [2018-09-18 12:21:38,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:21:38,490 INFO L93 Difference]: Finished difference Result 26034 states and 36953 transitions. [2018-09-18 12:21:38,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:21:38,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 219 [2018-09-18 12:21:38,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:21:38,586 INFO L225 Difference]: With dead ends: 26034 [2018-09-18 12:21:38,586 INFO L226 Difference]: Without dead ends: 19450 [2018-09-18 12:21:38,630 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:21:38,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19450 states. [2018-09-18 12:21:39,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19450 to 19450. [2018-09-18 12:21:39,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19450 states. [2018-09-18 12:21:39,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19450 states to 19450 states and 25958 transitions. [2018-09-18 12:21:39,083 INFO L78 Accepts]: Start accepts. Automaton has 19450 states and 25958 transitions. Word has length 219 [2018-09-18 12:21:39,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:21:39,084 INFO L480 AbstractCegarLoop]: Abstraction has 19450 states and 25958 transitions. [2018-09-18 12:21:39,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:21:39,085 INFO L276 IsEmpty]: Start isEmpty. Operand 19450 states and 25958 transitions. [2018-09-18 12:21:39,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-09-18 12:21:39,097 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:21:39,098 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:21:39,098 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:21:39,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1622044176, now seen corresponding path program 1 times [2018-09-18 12:21:39,099 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:21:39,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:21:39,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:21:39,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:21:39,100 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:21:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:21:39,663 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:21:39,663 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:21:39,664 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 12:21:39,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:21:39,690 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:21:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:21:39,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:21:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:21:40,151 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:21:40,635 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:21:40,672 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:21:40,672 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 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:21:40,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:21:40,956 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:21:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:21:41,157 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:21:41,346 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:21:41,347 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:21:41,598 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:21:41,601 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:21:41,601 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-18 12:21:41,601 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:21:41,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:21:41,604 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:21:41,604 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-18 12:21:41,604 INFO L87 Difference]: Start difference. First operand 19450 states and 25958 transitions. Second operand 9 states. [2018-09-18 12:21:54,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:21:54,009 INFO L93 Difference]: Finished difference Result 62197 states and 86886 transitions. [2018-09-18 12:21:54,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-18 12:21:54,010 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 258 [2018-09-18 12:21:54,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:21:54,273 INFO L225 Difference]: With dead ends: 62197 [2018-09-18 12:21:54,274 INFO L226 Difference]: Without dead ends: 42753 [2018-09-18 12:21:54,389 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1047 GetRequests, 1025 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2018-09-18 12:21:54,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42753 states. [2018-09-18 12:21:55,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42753 to 42528. [2018-09-18 12:21:55,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42528 states. [2018-09-18 12:21:55,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42528 states to 42528 states and 53158 transitions. [2018-09-18 12:21:55,599 INFO L78 Accepts]: Start accepts. Automaton has 42528 states and 53158 transitions. Word has length 258 [2018-09-18 12:21:55,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:21:55,599 INFO L480 AbstractCegarLoop]: Abstraction has 42528 states and 53158 transitions. [2018-09-18 12:21:55,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:21:55,601 INFO L276 IsEmpty]: Start isEmpty. Operand 42528 states and 53158 transitions. [2018-09-18 12:21:55,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2018-09-18 12:21:55,631 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:21:55,632 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, 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, 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] [2018-09-18 12:21:55,632 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:21:55,633 INFO L82 PathProgramCache]: Analyzing trace with hash 963061407, now seen corresponding path program 1 times [2018-09-18 12:21:55,633 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:21:55,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:21:55,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:21:55,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:21:55,636 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:21:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:21:56,287 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 205 proven. 96 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-09-18 12:21:56,287 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:21:56,287 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 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 [2018-09-18 12:21:56,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:21:56,305 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:21:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:21:56,409 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:21:56,930 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 370 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-09-18 12:21:56,930 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:21:57,232 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 12:21:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 205 proven. 96 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-09-18 12:21:58,288 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:21:58,288 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 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:21:58,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:21:58,314 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:21:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:21:58,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:21:58,814 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 370 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-09-18 12:21:58,815 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:21:59,112 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 205 proven. 96 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (5)] Exception during sending of exit command (exit): Broken pipe [2018-09-18 12:21:59,114 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:21:59,115 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-18 12:21:59,115 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:21:59,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:21:59,116 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:21:59,117 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-09-18 12:21:59,117 INFO L87 Difference]: Start difference. First operand 42528 states and 53158 transitions. Second operand 9 states. [2018-09-18 12:22:15,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:22:15,431 INFO L93 Difference]: Finished difference Result 109708 states and 146042 transitions. [2018-09-18 12:22:15,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-18 12:22:15,431 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 371 [2018-09-18 12:22:15,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:22:15,768 INFO L225 Difference]: With dead ends: 109708 [2018-09-18 12:22:15,769 INFO L226 Difference]: Without dead ends: 67889 [2018-09-18 12:22:15,927 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1506 GetRequests, 1482 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2018-09-18 12:22:15,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67889 states. [2018-09-18 12:22:17,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67889 to 67802. [2018-09-18 12:22:17,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67802 states. [2018-09-18 12:22:17,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67802 states to 67802 states and 86429 transitions. [2018-09-18 12:22:17,997 INFO L78 Accepts]: Start accepts. Automaton has 67802 states and 86429 transitions. Word has length 371 [2018-09-18 12:22:17,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:22:17,998 INFO L480 AbstractCegarLoop]: Abstraction has 67802 states and 86429 transitions. [2018-09-18 12:22:17,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:22:17,998 INFO L276 IsEmpty]: Start isEmpty. Operand 67802 states and 86429 transitions. [2018-09-18 12:22:18,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2018-09-18 12:22:18,034 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:22:18,035 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 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 12:22:18,035 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:22:18,036 INFO L82 PathProgramCache]: Analyzing trace with hash -2054155247, now seen corresponding path program 1 times [2018-09-18 12:22:18,036 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:22:18,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:18,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:22:18,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:18,038 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:22:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:22:18,720 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 222 proven. 144 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-18 12:22:18,720 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:22:18,721 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 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 [2018-09-18 12:22:18,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:22:18,737 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:22:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:22:18,856 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:22:19,124 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 484 proven. 2 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2018-09-18 12:22:19,124 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:22:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 222 proven. 144 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-18 12:22:19,450 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:22:19,450 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 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:22:19,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:22:19,467 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:22:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:22:19,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:22:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 484 proven. 2 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2018-09-18 12:22:20,096 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:22:20,357 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 12:22:20,743 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 222 proven. 144 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-18 12:22:20,745 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:22:20,746 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 12:22:20,746 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:22:20,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:22:20,747 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:22:20,747 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:22:20,748 INFO L87 Difference]: Start difference. First operand 67802 states and 86429 transitions. Second operand 9 states. [2018-09-18 12:22:35,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:22:35,888 INFO L93 Difference]: Finished difference Result 194157 states and 288738 transitions. [2018-09-18 12:22:35,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-18 12:22:35,888 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 435 [2018-09-18 12:22:35,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:22:36,941 INFO L225 Difference]: With dead ends: 194157 [2018-09-18 12:22:36,941 INFO L226 Difference]: Without dead ends: 122468 [2018-09-18 12:22:37,544 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1762 GetRequests, 1737 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-09-18 12:22:37,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122468 states. [2018-09-18 12:22:40,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122468 to 121978. [2018-09-18 12:22:40,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121978 states. [2018-09-18 12:22:42,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121978 states to 121978 states and 166515 transitions. [2018-09-18 12:22:42,238 INFO L78 Accepts]: Start accepts. Automaton has 121978 states and 166515 transitions. Word has length 435 [2018-09-18 12:22:42,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:22:42,239 INFO L480 AbstractCegarLoop]: Abstraction has 121978 states and 166515 transitions. [2018-09-18 12:22:42,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:22:42,239 INFO L276 IsEmpty]: Start isEmpty. Operand 121978 states and 166515 transitions. [2018-09-18 12:22:42,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2018-09-18 12:22:42,268 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:22:42,268 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:22:42,269 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:22:42,269 INFO L82 PathProgramCache]: Analyzing trace with hash -701336739, now seen corresponding path program 1 times [2018-09-18 12:22:42,269 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:22:42,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:42,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:22:42,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:42,270 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:22:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:22:43,014 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-18 12:22:43,468 WARN L178 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-18 12:22:44,138 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 246 proven. 194 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2018-09-18 12:22:44,139 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:22:44,139 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 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 [2018-09-18 12:22:44,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:22:44,148 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:22:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:22:44,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:22:44,448 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 583 proven. 2 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-09-18 12:22:44,448 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:22:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 333 proven. 90 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2018-09-18 12:22:44,694 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:22:44,694 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 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:22:44,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:22:44,710 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:22:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:22:44,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:22:45,174 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 583 proven. 2 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-09-18 12:22:45,175 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:22:46,425 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 333 proven. 90 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2018-09-18 12:22:46,428 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:22:46,429 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 5, 5] total 24 [2018-09-18 12:22:46,429 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:22:46,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-18 12:22:46,430 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-18 12:22:46,430 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2018-09-18 12:22:46,430 INFO L87 Difference]: Start difference. First operand 121978 states and 166515 transitions. Second operand 15 states. [2018-09-18 12:23:11,205 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2018-09-18 12:23:13,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:23:13,687 INFO L93 Difference]: Finished difference Result 269476 states and 393301 transitions. [2018-09-18 12:23:13,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-18 12:23:13,689 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 447 [2018-09-18 12:23:13,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:23:14,555 INFO L225 Difference]: With dead ends: 269476 [2018-09-18 12:23:14,555 INFO L226 Difference]: Without dead ends: 146573 [2018-09-18 12:23:16,674 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1860 GetRequests, 1800 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=647, Invalid=3135, Unknown=0, NotChecked=0, Total=3782 [2018-09-18 12:23:16,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146573 states. [2018-09-18 12:23:20,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146573 to 144664. [2018-09-18 12:23:20,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144664 states. [2018-09-18 12:23:21,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144664 states to 144664 states and 185572 transitions. [2018-09-18 12:23:21,199 INFO L78 Accepts]: Start accepts. Automaton has 144664 states and 185572 transitions. Word has length 447 [2018-09-18 12:23:21,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:23:21,200 INFO L480 AbstractCegarLoop]: Abstraction has 144664 states and 185572 transitions. [2018-09-18 12:23:21,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-18 12:23:21,200 INFO L276 IsEmpty]: Start isEmpty. Operand 144664 states and 185572 transitions. [2018-09-18 12:23:21,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2018-09-18 12:23:21,226 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:23:21,226 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:21,227 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:23:21,227 INFO L82 PathProgramCache]: Analyzing trace with hash -949258480, now seen corresponding path program 1 times [2018-09-18 12:23:21,227 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:23:21,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:21,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:21,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:21,228 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:23:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:21,787 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 74 proven. 233 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-09-18 12:23:21,788 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:23:21,788 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 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 [2018-09-18 12:23:21,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:21,796 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:23:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:21,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:23:22,136 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-09-18 12:23:22,136 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:23:27,859 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-09-18 12:23:27,879 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 12:23:27,880 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-09-18 12:23:27,880 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:23:27,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:23:27,881 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:23:27,881 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:23:27,881 INFO L87 Difference]: Start difference. First operand 144664 states and 185572 transitions. Second operand 3 states. [2018-09-18 12:23:34,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:23:34,575 INFO L93 Difference]: Finished difference Result 284069 states and 364327 transitions. [2018-09-18 12:23:34,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:23:34,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 550 [2018-09-18 12:23:34,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:23:35,274 INFO L225 Difference]: With dead ends: 284069 [2018-09-18 12:23:35,274 INFO L226 Difference]: Without dead ends: 143725 [2018-09-18 12:23:36,637 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1112 GetRequests, 1102 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:23:36,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143725 states. [2018-09-18 12:23:39,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143725 to 143722. [2018-09-18 12:23:39,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143722 states. [2018-09-18 12:23:39,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143722 states to 143722 states and 178658 transitions. [2018-09-18 12:23:39,984 INFO L78 Accepts]: Start accepts. Automaton has 143722 states and 178658 transitions. Word has length 550 [2018-09-18 12:23:39,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:23:39,985 INFO L480 AbstractCegarLoop]: Abstraction has 143722 states and 178658 transitions. [2018-09-18 12:23:39,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:23:39,985 INFO L276 IsEmpty]: Start isEmpty. Operand 143722 states and 178658 transitions. [2018-09-18 12:23:40,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2018-09-18 12:23:40,050 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:23:40,051 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, 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, 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, 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, 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] [2018-09-18 12:23:40,051 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:23:40,052 INFO L82 PathProgramCache]: Analyzing trace with hash 962402991, now seen corresponding path program 1 times [2018-09-18 12:23:40,052 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:23:40,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:40,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:40,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:40,053 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:23:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:41,235 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 74 proven. 386 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-09-18 12:23:41,235 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:23:41,235 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 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 [2018-09-18 12:23:41,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:41,245 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:23:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:41,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:23:42,153 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 428 proven. 33 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-18 12:23:42,154 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:23:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 459 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-18 12:23:42,933 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:23:42,933 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 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:23:42,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:42,949 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:23:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:43,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:23:43,504 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2018-09-18 12:23:43,504 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:23:43,728 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2018-09-18 12:23:43,731 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-18 12:23:43,731 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8, 6, 6] total 16 [2018-09-18 12:23:43,731 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:23:43,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:23:43,732 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:23:43,732 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-09-18 12:23:43,733 INFO L87 Difference]: Start difference. First operand 143722 states and 178658 transitions. Second operand 3 states. [2018-09-18 12:23:49,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:23:49,695 INFO L93 Difference]: Finished difference Result 281008 states and 347738 transitions. [2018-09-18 12:23:49,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:23:49,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 710 [2018-09-18 12:23:49,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:23:50,700 INFO L225 Difference]: With dead ends: 281008 [2018-09-18 12:23:50,701 INFO L226 Difference]: Without dead ends: 141606 [2018-09-18 12:23:51,235 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2851 GetRequests, 2833 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-09-18 12:23:51,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141606 states. [2018-09-18 12:23:53,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141606 to 140883. [2018-09-18 12:23:53,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140883 states. [2018-09-18 12:23:54,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140883 states to 140883 states and 163025 transitions. [2018-09-18 12:23:54,057 INFO L78 Accepts]: Start accepts. Automaton has 140883 states and 163025 transitions. Word has length 710 [2018-09-18 12:23:54,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:23:54,058 INFO L480 AbstractCegarLoop]: Abstraction has 140883 states and 163025 transitions. [2018-09-18 12:23:54,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:23:54,059 INFO L276 IsEmpty]: Start isEmpty. Operand 140883 states and 163025 transitions. [2018-09-18 12:23:54,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1356 [2018-09-18 12:23:54,629 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:23:54,630 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:54,630 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:23:54,631 INFO L82 PathProgramCache]: Analyzing trace with hash 417788059, now seen corresponding path program 1 times [2018-09-18 12:23:54,631 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:23:54,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:54,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:54,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:54,632 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:23:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:55,035 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:23:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 140 proven. 354 refuted. 0 times theorem prover too weak. 891 trivial. 0 not checked. [2018-09-18 12:23:56,413 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:23:56,413 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 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 [2018-09-18 12:23:56,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:56,421 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:23:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:56,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:23:58,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 395 proven. 0 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-09-18 12:23:58,108 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:23:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 140 proven. 255 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-09-18 12:23:59,211 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:23:59,212 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 9 [2018-09-18 12:23:59,212 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:23:59,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:23:59,213 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:23:59,214 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:23:59,214 INFO L87 Difference]: Start difference. First operand 140883 states and 163025 transitions. Second operand 3 states. [2018-09-18 12:24:04,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:24:04,829 INFO L93 Difference]: Finished difference Result 312819 states and 365008 transitions. [2018-09-18 12:24:04,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:24:04,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1355 [2018-09-18 12:24:04,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:24:05,598 INFO L225 Difference]: With dead ends: 312819 [2018-09-18 12:24:05,598 INFO L226 Difference]: Without dead ends: 163512 [2018-09-18 12:24:06,800 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2717 GetRequests, 2709 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:24:06,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163512 states. [2018-09-18 12:24:08,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163512 to 155644. [2018-09-18 12:24:08,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155644 states. [2018-09-18 12:24:10,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155644 states to 155644 states and 179185 transitions. [2018-09-18 12:24:10,605 INFO L78 Accepts]: Start accepts. Automaton has 155644 states and 179185 transitions. Word has length 1355 [2018-09-18 12:24:10,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:24:10,606 INFO L480 AbstractCegarLoop]: Abstraction has 155644 states and 179185 transitions. [2018-09-18 12:24:10,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:24:10,606 INFO L276 IsEmpty]: Start isEmpty. Operand 155644 states and 179185 transitions. [2018-09-18 12:24:11,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1612 [2018-09-18 12:24:11,461 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:24:11,462 INFO L376 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:11,463 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:24:11,463 INFO L82 PathProgramCache]: Analyzing trace with hash 403721300, now seen corresponding path program 1 times [2018-09-18 12:24:11,463 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:24:11,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:11,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:24:11,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:11,464 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:24:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:24:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2285 backedges. 504 proven. 190 refuted. 0 times theorem prover too weak. 1591 trivial. 0 not checked. [2018-09-18 12:24:16,844 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:24:16,844 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 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 [2018-09-18 12:24:16,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:24:16,852 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:24:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:24:17,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:24:18,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2285 backedges. 1538 proven. 2 refuted. 0 times theorem prover too weak. 745 trivial. 0 not checked. [2018-09-18 12:24:18,281 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:24:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2285 backedges. 504 proven. 190 refuted. 0 times theorem prover too weak. 1591 trivial. 0 not checked. [2018-09-18 12:24:19,364 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:24:19,364 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 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:24:19,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:24:19,382 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:24:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:24:20,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:24:21,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2285 backedges. 1538 proven. 2 refuted. 0 times theorem prover too weak. 745 trivial. 0 not checked. [2018-09-18 12:24:21,312 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:24:22,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2285 backedges. 504 proven. 190 refuted. 0 times theorem prover too weak. 1591 trivial. 0 not checked. [2018-09-18 12:24:22,317 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:24:22,318 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 12:24:22,318 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:24:22,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:24:22,321 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:24:22,321 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:24:22,321 INFO L87 Difference]: Start difference. First operand 155644 states and 179185 transitions. Second operand 9 states. Received shutdown request... [2018-09-18 12:24:28,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-18 12:24:28,524 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 12:24:28,530 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 12:24:28,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:24:28 BoogieIcfgContainer [2018-09-18 12:24:28,530 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 12:24:28,531 INFO L168 Benchmark]: Toolchain (without parser) took 215484.12 ms. Allocated memory was 1.5 GB in the beginning and 5.2 GB in the end (delta: 3.7 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.1 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-09-18 12:24:28,532 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 12:24:28,533 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1780.33 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: 169.1 MB). Peak memory consumption was 169.1 MB. Max. memory is 7.1 GB. [2018-09-18 12:24:28,533 INFO L168 Benchmark]: Boogie Procedure Inliner took 212.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-18 12:24:28,534 INFO L168 Benchmark]: Boogie Preprocessor took 621.50 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 855.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. [2018-09-18 12:24:28,535 INFO L168 Benchmark]: RCFGBuilder took 7953.42 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 480.8 MB). Peak memory consumption was 480.8 MB. Max. memory is 7.1 GB. [2018-09-18 12:24:28,536 INFO L168 Benchmark]: TraceAbstraction took 204909.37 ms. Allocated memory was 2.4 GB in the beginning and 5.2 GB in the end (delta: 2.9 GB). Free memory was 1.8 GB in the beginning and 3.4 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-09-18 12:24:28,541 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1780.33 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: 169.1 MB). Peak memory consumption was 169.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 212.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 621.50 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 855.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7953.42 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 480.8 MB). Peak memory consumption was 480.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204909.37 ms. Allocated memory was 2.4 GB in the beginning and 5.2 GB in the end (delta: 2.9 GB). Free memory was 1.8 GB in the beginning and 3.4 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 114). Cancelled while BasicCegarLoop was constructing difference of abstraction (155644states) and FLOYD_HOARE automaton (currently 11 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (135685 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 204.8s OverallTime, 12 OverallIterations, 7 TraceHistogramMax, 139.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3935 SDtfs, 52181 SDslu, 2467 SDs, 0 SdLazy, 75318 SolverSat, 16867 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 86.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19345 GetRequests, 19137 SyntacticMatches, 27 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1414 ImplicationChecksByTransitivity, 10.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155644occurred in iteration=11, 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: 23.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 11380 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 27.7s InterpolantComputationTime, 15818 NumberOfCodeBlocks, 15818 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 25347 ConstructedInterpolants, 43 QuantifiedInterpolants, 39333779 SizeOfPredicates, 12 NumberOfNonLiveVariables, 13405 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 40 InterpolantComputations, 9 PerfectInterpolantSequences, 26430/29383 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/Problem18_label15_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_12-24-28-557.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label15_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_12-24-28-557.csv Completed graceful shutdown