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/Problem17_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 12:18:09,024 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 12:18:09,026 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 12:18:09,039 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 12:18:09,039 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 12:18:09,041 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 12:18:09,044 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 12:18:09,046 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 12:18:09,047 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 12:18:09,048 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 12:18:09,049 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 12:18:09,049 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 12:18:09,050 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 12:18:09,051 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 12:18:09,052 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 12:18:09,053 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 12:18:09,054 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 12:18:09,055 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 12:18:09,057 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 12:18:09,059 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 12:18:09,060 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 12:18:09,061 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 12:18:09,063 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 12:18:09,064 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 12:18:09,064 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 12:18:09,068 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 12:18:09,072 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 12:18:09,073 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 12:18:09,074 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 12:18:09,075 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 12:18:09,075 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 12:18:09,078 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 12:18:09,078 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 12:18:09,079 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 12:18:09,080 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 12:18:09,080 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 12:18:09,081 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 12:18:09,108 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 12:18:09,108 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 12:18:09,109 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 12:18:09,109 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 12:18:09,109 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 12:18:09,115 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 12:18:09,115 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 12:18:09,115 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 12:18:09,116 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 12:18:09,116 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 12:18:09,116 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 12:18:09,116 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 12:18:09,117 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 12:18:09,117 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 12:18:09,117 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 12:18:09,118 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 12:18:09,118 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 12:18:09,118 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 12:18:09,119 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 12:18:09,119 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 12:18:09,119 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 12:18:09,119 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 12:18:09,119 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 12:18:09,120 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 12:18:09,120 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:18:09,120 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 12:18:09,120 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 12:18:09,121 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 12:18:09,122 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 12:18:09,122 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 12:18:09,122 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 12:18:09,122 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 12:18:09,122 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 12:18:09,123 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 12:18:09,189 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 12:18:09,204 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 12:18:09,208 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 12:18:09,209 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 12:18:09,210 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 12:18:09,210 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label59_true-unreach-call.c [2018-09-18 12:18:09,477 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28758e53e/9c8e2c219b194b75be3c6e8fba88cd36/FLAGa5365bd53 [2018-09-18 12:18:10,000 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 12:18:10,001 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label59_true-unreach-call.c [2018-09-18 12:18:10,030 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28758e53e/9c8e2c219b194b75be3c6e8fba88cd36/FLAGa5365bd53 [2018-09-18 12:18:10,046 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28758e53e/9c8e2c219b194b75be3c6e8fba88cd36 [2018-09-18 12:18:10,058 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 12:18:10,061 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 12:18:10,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 12:18:10,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 12:18:10,069 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 12:18:10,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:18:10" (1/1) ... [2018-09-18 12:18:10,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3582f3eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:10, skipping insertion in model container [2018-09-18 12:18:10,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:18:10" (1/1) ... [2018-09-18 12:18:10,086 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 12:18:11,109 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:18:11,130 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 12:18:11,499 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:18:11,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:11 WrapperNode [2018-09-18 12:18:11,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 12:18:11,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 12:18:11,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 12:18:11,749 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 12:18:11,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:11" (1/1) ... [2018-09-18 12:18:11,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:11" (1/1) ... [2018-09-18 12:18:12,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 12:18:12,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 12:18:12,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 12:18:12,023 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 12:18:12,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:11" (1/1) ... [2018-09-18 12:18:12,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:11" (1/1) ... [2018-09-18 12:18:12,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:11" (1/1) ... [2018-09-18 12:18:12,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:11" (1/1) ... [2018-09-18 12:18:12,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:11" (1/1) ... [2018-09-18 12:18:12,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:11" (1/1) ... [2018-09-18 12:18:12,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:11" (1/1) ... [2018-09-18 12:18:12,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 12:18:12,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 12:18:12,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 12:18:12,884 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 12:18:12,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:11" (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 12:18:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 12:18:12,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 12:18:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 12:18:12,962 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 12:18:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 12:18:12,962 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 12:18:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 12:18:12,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 12:18:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 12:18:12,963 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 12:18:24,473 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 12:18:24,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:18:24 BoogieIcfgContainer [2018-09-18 12:18:24,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 12:18:24,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 12:18:24,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 12:18:24,479 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 12:18:24,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:18:10" (1/3) ... [2018-09-18 12:18:24,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605dc5ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:18:24, skipping insertion in model container [2018-09-18 12:18:24,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:18:11" (2/3) ... [2018-09-18 12:18:24,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605dc5ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:18:24, skipping insertion in model container [2018-09-18 12:18:24,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:18:24" (3/3) ... [2018-09-18 12:18:24,483 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label59_true-unreach-call.c [2018-09-18 12:18:24,492 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 12:18:24,500 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 12:18:24,560 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 12:18:24,561 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 12:18:24,561 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 12:18:24,561 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 12:18:24,562 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 12:18:24,562 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 12:18:24,562 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 12:18:24,562 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 12:18:24,562 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 12:18:24,603 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-18 12:18:24,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-18 12:18:24,613 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:18:24,614 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] [2018-09-18 12:18:24,615 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:18:24,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1188687990, now seen corresponding path program 1 times [2018-09-18 12:18:24,625 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:18:24,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:24,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:18:24,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:24,674 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:18:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:18:25,149 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-09-18 12:18:25,167 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 12:18:25,170 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:18:25,170 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:18:25,171 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:18:25,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:18:25,205 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:18:25,206 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:18:25,211 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-18 12:18:37,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:18:37,093 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-09-18 12:18:37,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:18:37,095 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-09-18 12:18:37,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:18:37,134 INFO L225 Difference]: With dead ends: 2164 [2018-09-18 12:18:37,134 INFO L226 Difference]: Without dead ends: 1554 [2018-09-18 12:18:37,145 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 12:18:37,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-09-18 12:18:37,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-09-18 12:18:37,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-09-18 12:18:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-09-18 12:18:37,301 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 39 [2018-09-18 12:18:37,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:18:37,302 INFO L480 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-09-18 12:18:37,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:18:37,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-09-18 12:18:37,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-09-18 12:18:37,314 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:18:37,314 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:18:37,314 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:18:37,315 INFO L82 PathProgramCache]: Analyzing trace with hash 2141434535, now seen corresponding path program 1 times [2018-09-18 12:18:37,315 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:18:37,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:37,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:18:37,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:37,318 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:18:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:18:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:18:37,612 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:18:37,612 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 12:18:37,612 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:18:37,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:18:37,614 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:18:37,615 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 12:18:37,615 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-09-18 12:18:44,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:18:44,577 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-09-18 12:18:44,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:18:44,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2018-09-18 12:18:44,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:18:44,597 INFO L225 Difference]: With dead ends: 3031 [2018-09-18 12:18:44,597 INFO L226 Difference]: Without dead ends: 1985 [2018-09-18 12:18:44,605 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:18:44,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-09-18 12:18:44,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-09-18 12:18:44,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-09-18 12:18:44,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-09-18 12:18:44,780 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 111 [2018-09-18 12:18:44,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:18:44,780 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-09-18 12:18:44,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:18:44,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-09-18 12:18:44,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-18 12:18:44,785 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:18:44,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:18:44,785 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:18:44,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1471325761, now seen corresponding path program 1 times [2018-09-18 12:18:44,786 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:18:44,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:44,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:18:44,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:18:44,788 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:18:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:18:45,057 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:18:45,057 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:18:45,058 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 12:18:45,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:18:45,077 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:18:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:18:45,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:18:51,870 WARN L178 SmtUtils]: Spent 6.27 s on a formula simplification that was a NOOP. DAG size: 42 [2018-09-18 12:18:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:18:51,949 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:18:55,081 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-09-18 12:18:55,503 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:18:55,533 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:18:55,533 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-09-18 12:18:55,533 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:18:55,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:18:55,534 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:18:55,534 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=109, Unknown=1, NotChecked=0, Total=156 [2018-09-18 12:18:55,535 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 6 states. [2018-09-18 12:19:28,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:19:28,699 INFO L93 Difference]: Finished difference Result 7519 states and 12896 transitions. [2018-09-18 12:19:28,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 12:19:28,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-09-18 12:19:28,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:19:28,735 INFO L225 Difference]: With dead ends: 7519 [2018-09-18 12:19:28,735 INFO L226 Difference]: Without dead ends: 5566 [2018-09-18 12:19:28,751 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 223 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=46, Invalid=109, Unknown=1, NotChecked=0, Total=156 [2018-09-18 12:19:28,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5566 states. [2018-09-18 12:19:28,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5566 to 5558. [2018-09-18 12:19:28,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5558 states. [2018-09-18 12:19:28,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 9348 transitions. [2018-09-18 12:19:28,950 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 9348 transitions. Word has length 114 [2018-09-18 12:19:28,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:19:28,951 INFO L480 AbstractCegarLoop]: Abstraction has 5558 states and 9348 transitions. [2018-09-18 12:19:28,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:19:28,951 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 9348 transitions. [2018-09-18 12:19:28,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-09-18 12:19:28,956 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:19:28,956 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:19:28,956 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:19:28,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1996985273, now seen corresponding path program 1 times [2018-09-18 12:19:28,957 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:19:28,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:19:28,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:28,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:19:28,958 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:19:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:29,286 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:19:29,752 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:19:29,753 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:19:29,753 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:19:29,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:29,762 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:19:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:29,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:19:29,900 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:19:29,900 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:19:30,029 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:19:30,050 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 12:19:30,050 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-18 12:19:30,050 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:19:30,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:19:30,051 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:19:30,051 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:19:30,052 INFO L87 Difference]: Start difference. First operand 5558 states and 9348 transitions. Second operand 3 states. [2018-09-18 12:19:34,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:19:34,928 INFO L93 Difference]: Finished difference Result 13732 states and 22969 transitions. [2018-09-18 12:19:34,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:19:34,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2018-09-18 12:19:34,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:19:34,972 INFO L225 Difference]: With dead ends: 13732 [2018-09-18 12:19:34,972 INFO L226 Difference]: Without dead ends: 8180 [2018-09-18 12:19:35,006 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 253 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:19:35,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8180 states. [2018-09-18 12:19:35,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8180 to 8179. [2018-09-18 12:19:35,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8179 states. [2018-09-18 12:19:35,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8179 states to 8179 states and 12772 transitions. [2018-09-18 12:19:35,235 INFO L78 Accepts]: Start accepts. Automaton has 8179 states and 12772 transitions. Word has length 127 [2018-09-18 12:19:35,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:19:35,235 INFO L480 AbstractCegarLoop]: Abstraction has 8179 states and 12772 transitions. [2018-09-18 12:19:35,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:19:35,236 INFO L276 IsEmpty]: Start isEmpty. Operand 8179 states and 12772 transitions. [2018-09-18 12:19:35,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-09-18 12:19:35,245 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:19:35,246 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:19:35,246 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:19:35,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1686408890, now seen corresponding path program 1 times [2018-09-18 12:19:35,246 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:19:35,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:19:35,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:35,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:19:35,253 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:19:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:35,621 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 65 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 12:19:35,621 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:19:35,621 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 12:19:35,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:35,630 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:19:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:35,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:19:36,147 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:19:36,148 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:19:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:19:36,594 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:19:36,594 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 12:19:36,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:36,616 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:19:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:36,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:19:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-18 12:19:37,010 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:19:37,221 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-18 12:19:37,223 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-18 12:19:37,223 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-09-18 12:19:37,223 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:19:37,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:19:37,224 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:19:37,224 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:19:37,225 INFO L87 Difference]: Start difference. First operand 8179 states and 12772 transitions. Second operand 5 states. [2018-09-18 12:19:43,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:19:43,471 INFO L93 Difference]: Finished difference Result 16413 states and 25696 transitions. [2018-09-18 12:19:43,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 12:19:43,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2018-09-18 12:19:43,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:19:43,508 INFO L225 Difference]: With dead ends: 16413 [2018-09-18 12:19:43,508 INFO L226 Difference]: Without dead ends: 8240 [2018-09-18 12:19:43,530 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 856 GetRequests, 838 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:19:43,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8240 states. [2018-09-18 12:19:43,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8240 to 8238. [2018-09-18 12:19:43,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8238 states. [2018-09-18 12:19:43,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8238 states to 8238 states and 10734 transitions. [2018-09-18 12:19:43,703 INFO L78 Accepts]: Start accepts. Automaton has 8238 states and 10734 transitions. Word has length 212 [2018-09-18 12:19:43,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:19:43,704 INFO L480 AbstractCegarLoop]: Abstraction has 8238 states and 10734 transitions. [2018-09-18 12:19:43,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:19:43,704 INFO L276 IsEmpty]: Start isEmpty. Operand 8238 states and 10734 transitions. [2018-09-18 12:19:43,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-09-18 12:19:43,713 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:19:43,713 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:19:43,714 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:19:43,714 INFO L82 PathProgramCache]: Analyzing trace with hash 133092229, now seen corresponding path program 1 times [2018-09-18 12:19:43,714 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:19:43,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:19:43,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:43,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:19:43,715 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:19:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:44,112 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 12:19:44,112 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:19:44,112 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:19:44,113 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:19:44,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:19:44,114 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:19:44,114 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:19:44,114 INFO L87 Difference]: Start difference. First operand 8238 states and 10734 transitions. Second operand 4 states. [2018-09-18 12:19:53,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:19:53,168 INFO L93 Difference]: Finished difference Result 29260 states and 39353 transitions. [2018-09-18 12:19:53,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:19:53,172 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 293 [2018-09-18 12:19:53,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:19:53,240 INFO L225 Difference]: With dead ends: 29260 [2018-09-18 12:19:53,240 INFO L226 Difference]: Without dead ends: 21028 [2018-09-18 12:19:53,273 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 12:19:53,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21028 states. [2018-09-18 12:19:53,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21028 to 21021. [2018-09-18 12:19:53,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21021 states. [2018-09-18 12:19:53,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21021 states to 21021 states and 26380 transitions. [2018-09-18 12:19:53,707 INFO L78 Accepts]: Start accepts. Automaton has 21021 states and 26380 transitions. Word has length 293 [2018-09-18 12:19:53,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:19:53,708 INFO L480 AbstractCegarLoop]: Abstraction has 21021 states and 26380 transitions. [2018-09-18 12:19:53,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:19:53,708 INFO L276 IsEmpty]: Start isEmpty. Operand 21021 states and 26380 transitions. [2018-09-18 12:19:53,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-09-18 12:19:53,740 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:19:53,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:19:53,741 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:19:53,742 INFO L82 PathProgramCache]: Analyzing trace with hash 197834602, now seen corresponding path program 1 times [2018-09-18 12:19:53,742 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:19:53,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:19:53,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:53,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:19:53,744 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:19:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:54,788 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:19:54,789 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:19:54,789 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 12:19:54,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:19:54,805 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:19:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:19:54,930 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:19:55,434 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:19:55,435 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:19:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:19:55,916 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:19:55,917 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-09-18 12:19:55,917 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:19:55,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:19:55,918 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:19:55,918 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:19:55,918 INFO L87 Difference]: Start difference. First operand 21021 states and 26380 transitions. Second operand 6 states. [2018-09-18 12:20:05,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:20:05,241 INFO L93 Difference]: Finished difference Result 46873 states and 58905 transitions. [2018-09-18 12:20:05,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 12:20:05,241 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 387 [2018-09-18 12:20:05,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:20:05,318 INFO L225 Difference]: With dead ends: 46873 [2018-09-18 12:20:05,318 INFO L226 Difference]: Without dead ends: 25858 [2018-09-18 12:20:05,372 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 773 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:20:05,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25858 states. [2018-09-18 12:20:05,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25858 to 24546. [2018-09-18 12:20:05,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24546 states. [2018-09-18 12:20:06,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24546 states to 24546 states and 30651 transitions. [2018-09-18 12:20:06,167 INFO L78 Accepts]: Start accepts. Automaton has 24546 states and 30651 transitions. Word has length 387 [2018-09-18 12:20:06,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:20:06,168 INFO L480 AbstractCegarLoop]: Abstraction has 24546 states and 30651 transitions. [2018-09-18 12:20:06,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:20:06,170 INFO L276 IsEmpty]: Start isEmpty. Operand 24546 states and 30651 transitions. [2018-09-18 12:20:06,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2018-09-18 12:20:06,246 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:20:06,247 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:20:06,247 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:20:06,248 INFO L82 PathProgramCache]: Analyzing trace with hash -361053273, now seen corresponding path program 1 times [2018-09-18 12:20:06,248 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:20:06,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:20:06,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:20:06,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:20:06,251 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:20:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:20:06,670 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-09-18 12:20:06,813 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2018-09-18 12:20:06,814 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:20:06,814 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:20:06,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:20:06,829 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:20:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:20:06,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:20:07,208 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 430 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-09-18 12:20:07,208 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:20:07,535 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2018-09-18 12:20:07,556 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:20:07,557 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-09-18 12:20:07,557 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:20:07,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:20:07,558 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:20:07,558 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:20:07,558 INFO L87 Difference]: Start difference. First operand 24546 states and 30651 transitions. Second operand 3 states. [2018-09-18 12:20:13,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:20:13,843 INFO L93 Difference]: Finished difference Result 67518 states and 85923 transitions. [2018-09-18 12:20:13,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:20:13,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 575 [2018-09-18 12:20:13,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:20:13,994 INFO L225 Difference]: With dead ends: 67518 [2018-09-18 12:20:13,994 INFO L226 Difference]: Without dead ends: 42978 [2018-09-18 12:20:14,064 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1152 GetRequests, 1150 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:20:14,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42978 states. [2018-09-18 12:20:14,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42978 to 42520. [2018-09-18 12:20:14,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42520 states. [2018-09-18 12:20:14,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42520 states to 42520 states and 52919 transitions. [2018-09-18 12:20:14,866 INFO L78 Accepts]: Start accepts. Automaton has 42520 states and 52919 transitions. Word has length 575 [2018-09-18 12:20:14,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:20:14,867 INFO L480 AbstractCegarLoop]: Abstraction has 42520 states and 52919 transitions. [2018-09-18 12:20:14,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:20:14,867 INFO L276 IsEmpty]: Start isEmpty. Operand 42520 states and 52919 transitions. [2018-09-18 12:20:14,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2018-09-18 12:20:14,990 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:20:14,990 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:20:14,991 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:20:14,991 INFO L82 PathProgramCache]: Analyzing trace with hash 533249990, now seen corresponding path program 1 times [2018-09-18 12:20:14,991 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:20:14,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:20:14,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:20:14,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:20:14,992 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:20:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:20:16,408 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 507 proven. 2 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2018-09-18 12:20:16,409 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:20:16,409 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 12:20:16,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:20:16,419 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:20:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:20:16,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:20:16,939 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 507 proven. 2 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2018-09-18 12:20:16,940 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:20:17,347 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 507 proven. 2 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2018-09-18 12:20:17,369 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:20:17,369 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 12:20:17,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:20:17,384 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:20:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:20:17,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:20:18,226 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 507 proven. 2 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2018-09-18 12:20:18,227 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:20:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 507 proven. 2 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2018-09-18 12:20:19,059 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:20:19,060 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 9 [2018-09-18 12:20:19,061 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:20:19,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-18 12:20:19,062 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-18 12:20:19,062 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:20:19,063 INFO L87 Difference]: Start difference. First operand 42520 states and 52919 transitions. Second operand 7 states. [2018-09-18 12:20:40,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:20:40,399 INFO L93 Difference]: Finished difference Result 105199 states and 139674 transitions. [2018-09-18 12:20:40,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-18 12:20:40,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 608 [2018-09-18 12:20:40,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:20:41,099 INFO L225 Difference]: With dead ends: 105199 [2018-09-18 12:20:41,100 INFO L226 Difference]: Without dead ends: 63119 [2018-09-18 12:20:41,241 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2444 GetRequests, 2431 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:20:41,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63119 states. [2018-09-18 12:20:42,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63119 to 60828. [2018-09-18 12:20:42,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60828 states. [2018-09-18 12:20:42,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60828 states to 60828 states and 73885 transitions. [2018-09-18 12:20:42,564 INFO L78 Accepts]: Start accepts. Automaton has 60828 states and 73885 transitions. Word has length 608 [2018-09-18 12:20:42,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:20:42,565 INFO L480 AbstractCegarLoop]: Abstraction has 60828 states and 73885 transitions. [2018-09-18 12:20:42,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-18 12:20:42,566 INFO L276 IsEmpty]: Start isEmpty. Operand 60828 states and 73885 transitions. [2018-09-18 12:20:42,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2018-09-18 12:20:42,672 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:20:42,672 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:20:42,673 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:20:42,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1093586407, now seen corresponding path program 1 times [2018-09-18 12:20:42,673 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:20:42,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:20:42,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:20:42,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:20:42,674 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:20:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:20:43,321 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2018-09-18 12:20:43,322 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:20:43,322 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 12:20:43,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:20:43,330 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:20:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:20:43,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:20:44,294 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 367 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-09-18 12:20:44,294 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:20:44,566 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 106 proven. 6 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-09-18 12:20:44,587 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:20:44,588 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2018-09-18 12:20:44,588 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:20:44,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:20:44,589 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:20:44,589 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:20:44,589 INFO L87 Difference]: Start difference. First operand 60828 states and 73885 transitions. Second operand 3 states. [2018-09-18 12:20:48,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:20:48,690 INFO L93 Difference]: Finished difference Result 117456 states and 142231 transitions. [2018-09-18 12:20:48,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:20:48,690 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 658 [2018-09-18 12:20:48,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:20:48,850 INFO L225 Difference]: With dead ends: 117456 [2018-09-18 12:20:48,851 INFO L226 Difference]: Without dead ends: 57242 [2018-09-18 12:20:48,978 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1319 GetRequests, 1311 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:20:49,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57242 states. [2018-09-18 12:20:49,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57242 to 56789. [2018-09-18 12:20:49,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56789 states. [2018-09-18 12:20:49,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56789 states to 56789 states and 68396 transitions. [2018-09-18 12:20:49,904 INFO L78 Accepts]: Start accepts. Automaton has 56789 states and 68396 transitions. Word has length 658 [2018-09-18 12:20:49,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:20:49,905 INFO L480 AbstractCegarLoop]: Abstraction has 56789 states and 68396 transitions. [2018-09-18 12:20:49,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:20:49,905 INFO L276 IsEmpty]: Start isEmpty. Operand 56789 states and 68396 transitions. [2018-09-18 12:20:50,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2018-09-18 12:20:50,025 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:20:50,025 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:20:50,026 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:20:50,026 INFO L82 PathProgramCache]: Analyzing trace with hash 2080661305, now seen corresponding path program 1 times [2018-09-18 12:20:50,026 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:20:50,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:20:50,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:20:50,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:20:50,027 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:20:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:20:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 143 proven. 326 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-09-18 12:20:51,904 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:20:51,905 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 12:20:51,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:20:51,917 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:20:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:20:52,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:20:52,816 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2018-09-18 12:20:52,816 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:20:55,897 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 25 [2018-09-18 12:20:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 143 proven. 403 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-09-18 12:20:56,967 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:20:56,967 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 12:20:56,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:20:56,984 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:20:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:20:57,459 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:20:58,124 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2018-09-18 12:20:58,124 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:21:01,136 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 143 proven. 403 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-09-18 12:21:01,139 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:21:01,140 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8, 7, 8] total 15 [2018-09-18 12:21:01,140 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:21:01,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:21:01,142 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:21:01,142 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=146, Unknown=2, NotChecked=0, Total=210 [2018-09-18 12:21:01,143 INFO L87 Difference]: Start difference. First operand 56789 states and 68396 transitions. Second operand 9 states. [2018-09-18 12:21:24,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:21:24,267 INFO L93 Difference]: Finished difference Result 147518 states and 191371 transitions. [2018-09-18 12:21:24,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-18 12:21:24,268 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 728 [2018-09-18 12:21:24,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:21:24,700 INFO L225 Difference]: With dead ends: 147518 [2018-09-18 12:21:24,701 INFO L226 Difference]: Without dead ends: 91220 [2018-09-18 12:21:24,931 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2940 GetRequests, 2910 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=196, Invalid=452, Unknown=2, NotChecked=0, Total=650 [2018-09-18 12:21:25,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91220 states. [2018-09-18 12:21:26,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91220 to 84494. [2018-09-18 12:21:26,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84494 states. [2018-09-18 12:21:27,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84494 states to 84494 states and 100152 transitions. [2018-09-18 12:21:27,119 INFO L78 Accepts]: Start accepts. Automaton has 84494 states and 100152 transitions. Word has length 728 [2018-09-18 12:21:27,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:21:27,119 INFO L480 AbstractCegarLoop]: Abstraction has 84494 states and 100152 transitions. [2018-09-18 12:21:27,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:21:27,119 INFO L276 IsEmpty]: Start isEmpty. Operand 84494 states and 100152 transitions. [2018-09-18 12:21:27,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2018-09-18 12:21:27,269 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:21:27,270 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:21:27,270 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:21:27,270 INFO L82 PathProgramCache]: Analyzing trace with hash -214958746, now seen corresponding path program 1 times [2018-09-18 12:21:27,271 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:21:27,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:21:27,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:21:27,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:21:27,272 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:21:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:21:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 141 proven. 372 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-09-18 12:21:28,052 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:21:28,052 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 12:21:28,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:21:28,060 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:21:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:21:28,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:21:28,852 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 333 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2018-09-18 12:21:28,852 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:21:29,375 WARN L178 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-09-18 12:21:29,500 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2018-09-18 12:21:29,760 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-09-18 12:21:30,470 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 128 proven. 289 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2018-09-18 12:21:30,491 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:21:30,492 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-09-18 12:21:30,492 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:21:30,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:21:30,493 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:21:30,493 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:21:30,493 INFO L87 Difference]: Start difference. First operand 84494 states and 100152 transitions. Second operand 5 states. [2018-09-18 12:21:40,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:21:40,529 INFO L93 Difference]: Finished difference Result 183586 states and 217080 transitions. [2018-09-18 12:21:40,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:21:40,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 750 [2018-09-18 12:21:40,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:21:40,774 INFO L225 Difference]: With dead ends: 183586 [2018-09-18 12:21:40,774 INFO L226 Difference]: Without dead ends: 96604 [2018-09-18 12:21:40,928 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1511 GetRequests, 1497 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2018-09-18 12:21:41,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96604 states. [2018-09-18 12:21:42,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96604 to 92599. [2018-09-18 12:21:42,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92599 states. [2018-09-18 12:21:42,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92599 states to 92599 states and 108690 transitions. [2018-09-18 12:21:42,698 INFO L78 Accepts]: Start accepts. Automaton has 92599 states and 108690 transitions. Word has length 750 [2018-09-18 12:21:42,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:21:42,698 INFO L480 AbstractCegarLoop]: Abstraction has 92599 states and 108690 transitions. [2018-09-18 12:21:42,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:21:42,699 INFO L276 IsEmpty]: Start isEmpty. Operand 92599 states and 108690 transitions. [2018-09-18 12:21:42,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2018-09-18 12:21:42,835 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:21:42,836 INFO L376 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:21:42,836 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:21:42,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1067156795, now seen corresponding path program 1 times [2018-09-18 12:21:42,836 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:21:42,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:21:42,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:21:42,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:21:42,838 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:21:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:21:43,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 639 proven. 2 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2018-09-18 12:21:43,925 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:21:43,925 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:21:43,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:21:43,933 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:21:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:21:44,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:21:44,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 663 proven. 2 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2018-09-18 12:21:44,962 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:21:45,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 248 proven. 297 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2018-09-18 12:21:45,619 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:21:45,619 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 12:21:45,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:21:45,634 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:21:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:21:46,154 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:21:47,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 591 proven. 2 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2018-09-18 12:21:47,312 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:21:48,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 178 proven. 499 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2018-09-18 12:21:48,226 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:21:48,227 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-18 12:21:48,227 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:21:48,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:21:48,229 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:21:48,229 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-09-18 12:21:48,229 INFO L87 Difference]: Start difference. First operand 92599 states and 108690 transitions. Second operand 9 states. Received shutdown request... [2018-09-18 12:22:03,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-18 12:22:03,134 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 12:22:03,139 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 12:22:03,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:22:03 BoogieIcfgContainer [2018-09-18 12:22:03,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 12:22:03,140 INFO L168 Benchmark]: Toolchain (without parser) took 233082.09 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-09-18 12:22:03,142 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 12:22:03,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1685.89 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: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-09-18 12:22:03,143 INFO L168 Benchmark]: Boogie Procedure Inliner took 273.68 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-18 12:22:03,144 INFO L168 Benchmark]: Boogie Preprocessor took 860.20 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 944.8 MB). Free memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.5 MB. Max. memory is 7.1 GB. [2018-09-18 12:22:03,145 INFO L168 Benchmark]: RCFGBuilder took 11591.47 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 455.4 MB). Peak memory consumption was 455.4 MB. Max. memory is 7.1 GB. [2018-09-18 12:22:03,145 INFO L168 Benchmark]: TraceAbstraction took 218664.08 ms. Allocated memory was 2.5 GB in the beginning and 3.9 GB in the end (delta: 1.4 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -652.4 MB). Peak memory consumption was 754.8 MB. Max. memory is 7.1 GB. [2018-09-18 12:22:03,150 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1685.89 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: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 273.68 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 860.20 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 944.8 MB). Free memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11591.47 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 455.4 MB). Peak memory consumption was 455.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218664.08 ms. Allocated memory was 2.5 GB in the beginning and 3.9 GB in the end (delta: 1.4 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -652.4 MB). Peak memory consumption was 754.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 104). Cancelled while BasicCegarLoop was constructing difference of abstraction (92599states) and FLOYD_HOARE automaton (currently 28 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (39444 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 218.5s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 164.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4064 SDtfs, 25200 SDslu, 3166 SDs, 0 SdLazy, 43765 SolverSat, 10906 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 142.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14873 GetRequests, 14705 SyntacticMatches, 31 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 21.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92599occurred in iteration=12, 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: 9.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 15791 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.0s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 36.3s InterpolantComputationTime, 12784 NumberOfCodeBlocks, 12784 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 20100 ConstructedInterpolants, 266 QuantifiedInterpolants, 32232670 SizeOfPredicates, 30 NumberOfNonLiveVariables, 10833 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 41 InterpolantComputations, 11 PerfectInterpolantSequences, 17801/20557 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/Problem17_label59_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_12-22-03-164.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label59_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_12-22-03-164.csv Completed graceful shutdown