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/Problem10_label23_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:07:49,003 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:07:49,005 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:07:49,021 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:07:49,021 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:07:49,022 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:07:49,023 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:07:49,026 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:07:49,028 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:07:49,029 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:07:49,031 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:07:49,031 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:07:49,032 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:07:49,033 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:07:49,034 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:07:49,035 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:07:49,036 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:07:49,037 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:07:49,039 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:07:49,041 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:07:49,042 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:07:49,043 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:07:49,045 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:07:49,046 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:07:49,046 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:07:49,047 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:07:49,048 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:07:49,048 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:07:49,049 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:07:49,050 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:07:49,051 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:07:49,051 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:07:49,052 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:07:49,052 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:07:49,053 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:07:49,053 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:07:49,054 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 [2018-09-14 17:07:49,082 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:07:49,082 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:07:49,083 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:07:49,083 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:07:49,083 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:07:49,084 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:07:49,084 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:07:49,084 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:07:49,084 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:07:49,084 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:07:49,085 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:07:49,085 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:07:49,085 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:07:49,086 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:07:49,086 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:07:49,086 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:07:49,086 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:07:49,086 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:07:49,086 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:07:49,087 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:07:49,087 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:07:49,087 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:07:49,087 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:07:49,087 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:07:49,088 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:07:49,088 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:07:49,088 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:07:49,088 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:07:49,088 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:07:49,089 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:07:49,089 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:07:49,089 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:07:49,089 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:07:49,131 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:07:49,143 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:07:49,147 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:07:49,148 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:07:49,149 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:07:49,149 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label23_true-unreach-call.c [2018-09-14 17:07:49,493 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/692b790d6/dc7a274017cc4cbd9ee8dda769569026/FLAGa2e456afc [2018-09-14 17:07:49,754 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:07:49,755 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label23_true-unreach-call.c [2018-09-14 17:07:49,778 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/692b790d6/dc7a274017cc4cbd9ee8dda769569026/FLAGa2e456afc [2018-09-14 17:07:49,803 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/692b790d6/dc7a274017cc4cbd9ee8dda769569026 [2018-09-14 17:07:49,813 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:07:49,817 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:07:49,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:07:49,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:07:49,824 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:07:49,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:07:49" (1/1) ... [2018-09-14 17:07:49,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64024991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:07:49, skipping insertion in model container [2018-09-14 17:07:49,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:07:49" (1/1) ... [2018-09-14 17:07:49,839 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:07:50,324 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:07:50,346 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:07:50,494 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:07:50,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:07:50 WrapperNode [2018-09-14 17:07:50,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:07:50,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:07:50,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:07:50,542 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:07:50,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:07:50" (1/1) ... [2018-09-14 17:07:50,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:07:50" (1/1) ... [2018-09-14 17:07:50,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:07:50,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:07:50,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:07:50,628 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:07:50,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:07:50" (1/1) ... [2018-09-14 17:07:50,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:07:50" (1/1) ... [2018-09-14 17:07:50,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:07:50" (1/1) ... [2018-09-14 17:07:50,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:07:50" (1/1) ... [2018-09-14 17:07:50,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:07:50" (1/1) ... [2018-09-14 17:07:50,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:07:50" (1/1) ... [2018-09-14 17:07:50,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:07:50" (1/1) ... [2018-09-14 17:07:50,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:07:50,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:07:50,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:07:50,914 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:07:50,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:07:50" (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 [2018-09-14 17:07:50,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:07:50,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:07:50,986 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:07:50,986 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:07:50,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:07:50,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:07:50,987 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:07:50,987 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:07:54,464 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:07:54,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:07:54 BoogieIcfgContainer [2018-09-14 17:07:54,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:07:54,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:07:54,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:07:54,469 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:07:54,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:07:49" (1/3) ... [2018-09-14 17:07:54,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6becd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:07:54, skipping insertion in model container [2018-09-14 17:07:54,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:07:50" (2/3) ... [2018-09-14 17:07:54,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6becd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:07:54, skipping insertion in model container [2018-09-14 17:07:54,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:07:54" (3/3) ... [2018-09-14 17:07:54,472 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label23_true-unreach-call.c [2018-09-14 17:07:54,482 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:07:54,491 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:07:54,541 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:07:54,541 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:07:54,542 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:07:54,542 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:07:54,542 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:07:54,542 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:07:54,542 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:07:54,543 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:07:54,543 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:07:54,568 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-09-14 17:07:54,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-14 17:07:54,578 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:07:54,579 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:07:54,580 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:07:54,585 INFO L82 PathProgramCache]: Analyzing trace with hash 508483465, now seen corresponding path program 1 times [2018-09-14 17:07:54,588 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:07:54,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:07:54,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:07:54,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:07:54,634 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:07:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:07:55,073 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:07:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:07:55,217 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:07:55,217 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:07:55,217 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:07:55,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:07:55,240 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:07:55,241 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:07:55,243 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-09-14 17:07:56,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:07:56,837 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-09-14 17:07:56,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:07:56,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2018-09-14 17:07:56,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:07:56,859 INFO L225 Difference]: With dead ends: 574 [2018-09-14 17:07:56,860 INFO L226 Difference]: Without dead ends: 356 [2018-09-14 17:07:56,867 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:07:56,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-09-14 17:07:56,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-09-14 17:07:56,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-09-14 17:07:56,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-09-14 17:07:56,945 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 53 [2018-09-14 17:07:56,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:07:56,946 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-09-14 17:07:56,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:07:56,946 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-09-14 17:07:56,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-09-14 17:07:56,958 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:07:56,959 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:07:56,960 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:07:56,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1327667053, now seen corresponding path program 1 times [2018-09-14 17:07:56,961 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:07:56,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:07:56,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:07:56,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:07:56,963 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:07:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:07:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:07:57,349 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:07:57,349 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:07:57,349 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:07:57,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:07:57,353 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:07:57,353 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:07:57,353 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-09-14 17:08:02,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:08:02,114 INFO L93 Difference]: Finished difference Result 1289 states and 2315 transitions. [2018-09-14 17:08:02,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:08:02,115 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2018-09-14 17:08:02,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:08:02,126 INFO L225 Difference]: With dead ends: 1289 [2018-09-14 17:08:02,126 INFO L226 Difference]: Without dead ends: 939 [2018-09-14 17:08:02,131 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:08:02,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2018-09-14 17:08:02,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 926. [2018-09-14 17:08:02,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2018-09-14 17:08:02,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1444 transitions. [2018-09-14 17:08:02,208 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1444 transitions. Word has length 136 [2018-09-14 17:08:02,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:08:02,209 INFO L480 AbstractCegarLoop]: Abstraction has 926 states and 1444 transitions. [2018-09-14 17:08:02,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:08:02,210 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1444 transitions. [2018-09-14 17:08:02,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-09-14 17:08:02,217 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:08:02,217 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:08:02,217 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:08:02,218 INFO L82 PathProgramCache]: Analyzing trace with hash -734844493, now seen corresponding path program 1 times [2018-09-14 17:08:02,218 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:08:02,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:08:02,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:08:02,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:08:02,220 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:08:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:08:02,799 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:08:02,799 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:08:02,800 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:08:02,800 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:08:02,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:08:02,802 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:08:02,802 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:08:02,803 INFO L87 Difference]: Start difference. First operand 926 states and 1444 transitions. Second operand 6 states. [2018-09-14 17:08:07,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:08:07,382 INFO L93 Difference]: Finished difference Result 2537 states and 4091 transitions. [2018-09-14 17:08:07,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:08:07,384 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2018-09-14 17:08:07,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:08:07,395 INFO L225 Difference]: With dead ends: 2537 [2018-09-14 17:08:07,395 INFO L226 Difference]: Without dead ends: 1617 [2018-09-14 17:08:07,403 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:08:07,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2018-09-14 17:08:07,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1586. [2018-09-14 17:08:07,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2018-09-14 17:08:07,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 2321 transitions. [2018-09-14 17:08:07,454 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 2321 transitions. Word has length 152 [2018-09-14 17:08:07,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:08:07,455 INFO L480 AbstractCegarLoop]: Abstraction has 1586 states and 2321 transitions. [2018-09-14 17:08:07,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:08:07,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 2321 transitions. [2018-09-14 17:08:07,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-09-14 17:08:07,463 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:08:07,463 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:08:07,464 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:08:07,465 INFO L82 PathProgramCache]: Analyzing trace with hash -829584541, now seen corresponding path program 1 times [2018-09-14 17:08:07,465 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:08:07,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:08:07,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:08:07,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:08:07,466 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:08:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:08:07,832 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:08:07,832 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:08:07,832 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:08:07,833 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:08:07,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:08:07,833 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:08:07,833 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:08:07,834 INFO L87 Difference]: Start difference. First operand 1586 states and 2321 transitions. Second operand 6 states. [2018-09-14 17:08:09,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:08:09,214 INFO L93 Difference]: Finished difference Result 3508 states and 5316 transitions. [2018-09-14 17:08:09,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:08:09,215 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2018-09-14 17:08:09,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:08:09,228 INFO L225 Difference]: With dead ends: 3508 [2018-09-14 17:08:09,229 INFO L226 Difference]: Without dead ends: 1928 [2018-09-14 17:08:09,235 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:08:09,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2018-09-14 17:08:09,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1889. [2018-09-14 17:08:09,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1889 states. [2018-09-14 17:08:09,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2675 transitions. [2018-09-14 17:08:09,294 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2675 transitions. Word has length 176 [2018-09-14 17:08:09,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:08:09,295 INFO L480 AbstractCegarLoop]: Abstraction has 1889 states and 2675 transitions. [2018-09-14 17:08:09,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:08:09,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2675 transitions. [2018-09-14 17:08:09,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-09-14 17:08:09,302 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:08:09,303 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:08:09,303 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:08:09,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1805277256, now seen corresponding path program 1 times [2018-09-14 17:08:09,304 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:08:09,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:08:09,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:08:09,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:08:09,305 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:08:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:08:09,728 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-14 17:08:09,914 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 17:08:10,366 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-09-14 17:08:10,661 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:08:10,661 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:08:10,661 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 [2018-09-14 17:08:10,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:08:10,671 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:08:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:08:10,768 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:08:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:08:11,281 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:08:11,627 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:08:11,657 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:08:11,657 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:08:11,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:08:11,677 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:08:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:08:11,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:08:12,102 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:08:12,103 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:08:12,484 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:08:12,488 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:08:12,489 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 5, 5] total 22 [2018-09-14 17:08:12,489 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:08:12,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-14 17:08:12,490 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-14 17:08:12,491 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2018-09-14 17:08:12,491 INFO L87 Difference]: Start difference. First operand 1889 states and 2675 transitions. Second operand 15 states. [2018-09-14 17:08:13,758 WARN L178 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 21 [2018-09-14 17:08:20,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:08:20,656 INFO L93 Difference]: Finished difference Result 7128 states and 11119 transitions. [2018-09-14 17:08:20,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-14 17:08:20,657 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 216 [2018-09-14 17:08:20,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:08:20,693 INFO L225 Difference]: With dead ends: 7128 [2018-09-14 17:08:20,694 INFO L226 Difference]: Without dead ends: 4781 [2018-09-14 17:08:20,735 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 925 GetRequests, 873 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=665, Invalid=2091, Unknown=0, NotChecked=0, Total=2756 [2018-09-14 17:08:20,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4781 states. [2018-09-14 17:08:20,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4781 to 4357. [2018-09-14 17:08:20,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4357 states. [2018-09-14 17:08:20,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4357 states to 4357 states and 5665 transitions. [2018-09-14 17:08:20,899 INFO L78 Accepts]: Start accepts. Automaton has 4357 states and 5665 transitions. Word has length 216 [2018-09-14 17:08:20,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:08:20,899 INFO L480 AbstractCegarLoop]: Abstraction has 4357 states and 5665 transitions. [2018-09-14 17:08:20,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-14 17:08:20,900 INFO L276 IsEmpty]: Start isEmpty. Operand 4357 states and 5665 transitions. [2018-09-14 17:08:20,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-09-14 17:08:20,914 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:08:20,914 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:08:20,915 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:08:20,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1366596424, now seen corresponding path program 1 times [2018-09-14 17:08:20,915 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:08:20,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:08:20,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:08:20,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:08:20,917 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:08:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:08:21,482 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 92 proven. 78 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:08:21,483 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:08:21,483 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 [2018-09-14 17:08:21,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:08:21,501 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:08:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:08:21,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:08:21,848 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-09-14 17:08:21,848 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:08:22,193 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 92 proven. 78 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:08:22,227 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:08:22,227 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-09-14 17:08:22,227 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:08:22,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:08:22,228 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:08:22,230 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:08:22,230 INFO L87 Difference]: Start difference. First operand 4357 states and 5665 transitions. Second operand 5 states. [2018-09-14 17:08:22,435 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-09-14 17:08:24,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:08:24,588 INFO L93 Difference]: Finished difference Result 9813 states and 12856 transitions. [2018-09-14 17:08:24,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:08:24,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2018-09-14 17:08:24,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:08:24,628 INFO L225 Difference]: With dead ends: 9813 [2018-09-14 17:08:24,628 INFO L226 Difference]: Without dead ends: 5467 [2018-09-14 17:08:24,644 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 446 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:08:24,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5467 states. [2018-09-14 17:08:24,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5467 to 5119. [2018-09-14 17:08:24,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5119 states. [2018-09-14 17:08:24,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 6499 transitions. [2018-09-14 17:08:24,765 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 6499 transitions. Word has length 224 [2018-09-14 17:08:24,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:08:24,765 INFO L480 AbstractCegarLoop]: Abstraction has 5119 states and 6499 transitions. [2018-09-14 17:08:24,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:08:24,765 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 6499 transitions. [2018-09-14 17:08:24,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-09-14 17:08:24,781 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:08:24,781 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:08:24,781 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:08:24,782 INFO L82 PathProgramCache]: Analyzing trace with hash 922152244, now seen corresponding path program 1 times [2018-09-14 17:08:24,782 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:08:24,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:08:24,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:08:24,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:08:24,783 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:08:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:08:25,043 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:08:25,449 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 92 proven. 77 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:08:25,449 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:08:25,449 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:08:25,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:08:25,465 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:08:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:08:25,555 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:08:25,894 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-09-14 17:08:25,894 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:08:26,160 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 92 proven. 77 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:08:26,181 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:08:26,181 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-14 17:08:26,181 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:08:26,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:08:26,182 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:08:26,182 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:08:26,182 INFO L87 Difference]: Start difference. First operand 5119 states and 6499 transitions. Second operand 5 states. [2018-09-14 17:08:28,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:08:28,713 INFO L93 Difference]: Finished difference Result 13061 states and 16947 transitions. [2018-09-14 17:08:28,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:08:28,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2018-09-14 17:08:28,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:08:28,748 INFO L225 Difference]: With dead ends: 13061 [2018-09-14 17:08:28,748 INFO L226 Difference]: Without dead ends: 7948 [2018-09-14 17:08:28,768 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 510 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:08:28,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7948 states. [2018-09-14 17:08:28,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7948 to 7896. [2018-09-14 17:08:28,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7896 states. [2018-09-14 17:08:28,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7896 states to 7896 states and 9842 transitions. [2018-09-14 17:08:28,950 INFO L78 Accepts]: Start accepts. Automaton has 7896 states and 9842 transitions. Word has length 258 [2018-09-14 17:08:28,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:08:28,950 INFO L480 AbstractCegarLoop]: Abstraction has 7896 states and 9842 transitions. [2018-09-14 17:08:28,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:08:28,950 INFO L276 IsEmpty]: Start isEmpty. Operand 7896 states and 9842 transitions. [2018-09-14 17:08:28,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-09-14 17:08:28,981 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:08:28,981 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-14 17:08:28,982 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:08:28,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1240790714, now seen corresponding path program 1 times [2018-09-14 17:08:28,982 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:08:28,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:08:28,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:08:28,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:08:28,983 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:08:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:08:29,410 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-14 17:08:29,585 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 17:08:29,823 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2018-09-14 17:08:30,225 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-09-14 17:08:30,923 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 212 proven. 82 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-09-14 17:08:30,924 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:08:30,924 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 [2018-09-14 17:08:30,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:08:30,932 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:08:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:08:31,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:08:31,254 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-09-14 17:08:31,254 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:08:31,477 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-14 17:08:31,806 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 212 proven. 82 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-09-14 17:08:31,827 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:08:31,827 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:08:31,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:08:31,842 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:08:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:08:32,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:08:32,140 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-09-14 17:08:32,140 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:08:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 212 proven. 82 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-09-14 17:08:32,520 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:08:32,520 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 5, 5] total 23 [2018-09-14 17:08:32,520 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:08:32,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-14 17:08:32,521 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-14 17:08:32,521 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2018-09-14 17:08:32,522 INFO L87 Difference]: Start difference. First operand 7896 states and 9842 transitions. Second operand 17 states. [2018-09-14 17:08:38,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:08:38,510 INFO L93 Difference]: Finished difference Result 15657 states and 20119 transitions. [2018-09-14 17:08:38,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-14 17:08:38,511 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 295 [2018-09-14 17:08:38,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:08:38,546 INFO L225 Difference]: With dead ends: 15657 [2018-09-14 17:08:38,547 INFO L226 Difference]: Without dead ends: 7982 [2018-09-14 17:08:38,581 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1253 GetRequests, 1198 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=710, Invalid=2260, Unknown=0, NotChecked=0, Total=2970 [2018-09-14 17:08:38,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7982 states. [2018-09-14 17:08:38,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7982 to 7196. [2018-09-14 17:08:38,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7196 states. [2018-09-14 17:08:38,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7196 states to 7196 states and 8551 transitions. [2018-09-14 17:08:38,739 INFO L78 Accepts]: Start accepts. Automaton has 7196 states and 8551 transitions. Word has length 295 [2018-09-14 17:08:38,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:08:38,739 INFO L480 AbstractCegarLoop]: Abstraction has 7196 states and 8551 transitions. [2018-09-14 17:08:38,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-14 17:08:38,740 INFO L276 IsEmpty]: Start isEmpty. Operand 7196 states and 8551 transitions. [2018-09-14 17:08:38,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-09-14 17:08:38,760 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:08:38,761 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-14 17:08:38,761 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:08:38,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1037984411, now seen corresponding path program 1 times [2018-09-14 17:08:38,761 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:08:38,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:08:38,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:08:38,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:08:38,763 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:08:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:08:39,671 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 229 proven. 158 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:08:39,671 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:08:39,672 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 [2018-09-14 17:08:39,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:08:39,680 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:08:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:08:39,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:08:41,228 WARN L178 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 39 [2018-09-14 17:08:41,676 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 341 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-09-14 17:08:41,677 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:08:42,226 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-09-14 17:08:42,344 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-09-14 17:08:53,729 WARN L178 SmtUtils]: Spent 10.99 s on a formula simplification. DAG size of input: 187 DAG size of output: 33 [2018-09-14 17:08:53,734 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 10 [2018-09-14 17:08:58,734 WARN L178 SmtUtils]: Spent 4.65 s on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2018-09-14 17:08:58,738 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-14 17:08:58,926 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 26 [2018-09-14 17:08:59,326 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 42 [2018-09-14 17:08:59,331 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:08:59,433 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:08:59,558 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:08:59,608 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:08:59,697 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:08:59,757 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:08:59,829 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:08:59,878 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:08:59,925 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:08:59,974 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:00,023 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:00,254 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:00,305 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:00,356 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:00,412 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:00,515 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:00,639 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:00,691 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:00,740 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:00,790 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:00,849 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:00,902 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:00,954 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:01,053 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:01,103 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:01,435 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:01,752 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:01,865 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:01,918 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:01,968 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:02,016 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:02,070 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:02,130 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:02,181 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:02,253 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:02,447 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:02,505 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:02,598 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:02,650 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:02,703 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:02,760 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:02,809 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:02,863 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:02,924 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:02,980 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:03,047 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:03,097 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:03,147 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:03,198 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:03,246 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:03,299 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:03,350 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:03,398 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:03,457 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:03,565 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:03,622 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:03,678 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:03,741 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:03,791 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:03,840 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:03,894 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:04,033 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:04,087 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:04,136 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:04,185 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:04,248 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:04,313 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:04,362 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:04,416 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:04,473 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:04,522 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:04,575 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:04,626 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:04,678 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:04,725 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:04,805 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:04,865 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:04,914 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:05,055 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:05,109 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:05,159 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:05,208 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:05,262 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:05,312 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:05,362 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:05,411 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:05,483 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:05,532 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:05,863 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:06,190 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:06,512 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:06,675 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:06,728 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:06,780 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:06,830 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:06,909 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:06,980 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:07,042 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:07,096 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:07,147 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:07,202 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:07,255 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:07,308 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:07,638 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:07,695 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:07,750 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:07,802 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:07,857 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:09:08,604 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 148 proven. 239 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:09:08,625 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:09:08,626 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 [2018-09-14 17:09:08,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:09:08,647 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:09:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:09:08,848 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:09:20,065 WARN L178 SmtUtils]: Spent 11.07 s on a formula simplification. DAG size of input: 100 DAG size of output: 40 [2018-09-14 17:09:20,528 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 341 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-09-14 17:09:20,528 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:09:21,538 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2018-09-14 17:09:30,072 WARN L178 SmtUtils]: Spent 8.23 s on a formula simplification. DAG size of input: 244 DAG size of output: 63 [2018-09-14 17:09:30,164 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-09-14 17:09:35,537 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 1284400 conjuctions. This might take some time... Received shutdown request... [2018-09-14 17:12:06,173 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-14 17:12:06,374 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:12:06,374 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:12:06,380 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:12:06,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:12:06 BoogieIcfgContainer [2018-09-14 17:12:06,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:12:06,381 INFO L168 Benchmark]: Toolchain (without parser) took 256567.24 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 300.4 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-09-14 17:12:06,382 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-09-14 17:12:06,383 INFO L168 Benchmark]: CACSL2BoogieTranslator took 723.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:12:06,384 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-14 17:12:06,384 INFO L168 Benchmark]: Boogie Preprocessor took 283.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -873.8 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. [2018-09-14 17:12:06,385 INFO L168 Benchmark]: RCFGBuilder took 3551.54 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 96.5 MB). Peak memory consumption was 96.5 MB. Max. memory is 7.1 GB. [2018-09-14 17:12:06,386 INFO L168 Benchmark]: TraceAbstraction took 251914.69 ms. Allocated memory was 2.3 GB in the beginning and 3.4 GB in the end (delta: 1.1 GB). Free memory was 2.1 GB in the beginning and 1.1 GB in the end (delta: 1.0 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-09-14 17:12:06,392 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 723.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 85.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 283.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -873.8 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3551.54 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 96.5 MB). Peak memory consumption was 96.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 251914.69 ms. Allocated memory was 2.3 GB in the beginning and 3.4 GB in the end (delta: 1.1 GB). Free memory was 2.1 GB in the beginning and 1.1 GB in the end (delta: 1.0 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 142). Cancelled while BasicCegarLoop was analyzing trace of length 341 with TraceHistMax 4, while TraceCheckSpWp was constructing backward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 1 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 1284400 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 251.8s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 31.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 710 SDtfs, 8653 SDslu, 1202 SDs, 0 SdLazy, 13353 SolverSat, 3018 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 22.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3193 GetRequests, 3036 SyntacticMatches, 13 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1397 ImplicationChecksByTransitivity, 10.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7896occurred in iteration=7, 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: 0.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 1693 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 3014 NumberOfCodeBlocks, 3014 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 4498 ConstructedInterpolants, 0 QuantifiedInterpolants, 4525794 SizeOfPredicates, 5 NumberOfNonLiveVariables, 2628 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 3290/3860 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/Problem10_label23_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-12-06-407.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem10_label23_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-12-06-407.csv Completed graceful shutdown