java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label31_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:22:25,635 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:22:25,637 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:22:25,659 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:22:25,659 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:22:25,661 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:22:25,662 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:22:25,665 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:22:25,667 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:22:25,671 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:22:25,672 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:22:25,674 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:22:25,675 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:22:25,676 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:22:25,679 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:22:25,680 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:22:25,681 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:22:25,683 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:22:25,693 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:22:25,698 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:22:25,701 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:22:25,703 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:22:25,708 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-14 17:22:25,717 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:22:25,717 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:22:25,718 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:22:25,721 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:22:25,722 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 17:22:25,750 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:22:25,750 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:22:25,751 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:22:25,751 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:22:25,752 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:22:25,752 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:22:25,753 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:22:25,753 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:22:25,753 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:22:25,753 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:22:25,753 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:22:25,754 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:22:25,754 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:22:25,755 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:22:25,756 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:22:25,756 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:22:25,756 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:22:25,756 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:22:25,756 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:22:25,757 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:22:25,757 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:22:25,757 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:22:25,757 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:22:25,758 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:22:25,759 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:22:25,759 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:22:25,759 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:22:25,759 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:22:25,760 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:22:25,760 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:22:25,760 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:22:25,760 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:22:25,761 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:22:25,836 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:22:25,855 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:22:25,862 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:22:25,863 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:22:25,864 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:22:25,865 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label31_true-unreach-call.c [2018-09-14 17:22:26,237 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcbcc559b/553d1516407645e88fccc0d5582314e2/FLAG583ee3558 [2018-09-14 17:22:26,668 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:22:26,669 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label31_true-unreach-call.c [2018-09-14 17:22:26,697 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcbcc559b/553d1516407645e88fccc0d5582314e2/FLAG583ee3558 [2018-09-14 17:22:26,715 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcbcc559b/553d1516407645e88fccc0d5582314e2 [2018-09-14 17:22:26,727 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:22:26,730 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:22:26,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:22:26,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:22:26,739 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:22:26,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:22:26" (1/1) ... [2018-09-14 17:22:26,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8d764b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:26, skipping insertion in model container [2018-09-14 17:22:26,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:22:26" (1/1) ... [2018-09-14 17:22:26,756 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:22:28,165 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:22:28,184 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:22:28,714 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:22:29,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:29 WrapperNode [2018-09-14 17:22:29,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:22:29,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:22:29,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:22:29,015 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:22:29,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:29" (1/1) ... [2018-09-14 17:22:29,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:29" (1/1) ... [2018-09-14 17:22:29,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:22:29,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:22:29,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:22:29,840 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:22:29,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:29" (1/1) ... [2018-09-14 17:22:29,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:29" (1/1) ... [2018-09-14 17:22:29,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:29" (1/1) ... [2018-09-14 17:22:29,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:29" (1/1) ... [2018-09-14 17:22:30,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:29" (1/1) ... [2018-09-14 17:22:30,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:29" (1/1) ... [2018-09-14 17:22:30,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:29" (1/1) ... [2018-09-14 17:22:30,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:22:30,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:22:30,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:22:30,209 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:22:30,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:29" (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 17:22:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:22:30,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:22:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:22:30,286 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:22:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:22:30,287 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:22:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:22:30,287 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:22:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:22:30,287 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:22:30,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:22:30,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:22:30,288 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:22:30,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:22:41,372 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:22:41,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:22:41 BoogieIcfgContainer [2018-09-14 17:22:41,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:22:41,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:22:41,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:22:41,378 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:22:41,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:22:26" (1/3) ... [2018-09-14 17:22:41,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5683b043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:22:41, skipping insertion in model container [2018-09-14 17:22:41,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:29" (2/3) ... [2018-09-14 17:22:41,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5683b043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:22:41, skipping insertion in model container [2018-09-14 17:22:41,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:22:41" (3/3) ... [2018-09-14 17:22:41,382 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label31_true-unreach-call.c [2018-09-14 17:22:41,392 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:22:41,402 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:22:41,465 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:22:41,466 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:22:41,466 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:22:41,466 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:22:41,466 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:22:41,466 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:22:41,467 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:22:41,467 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:22:41,467 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:22:41,522 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-14 17:22:41,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-14 17:22:41,534 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:22:41,536 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:22:41,537 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:22:41,543 INFO L82 PathProgramCache]: Analyzing trace with hash -621967516, now seen corresponding path program 1 times [2018-09-14 17:22:41,546 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:22:41,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:41,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:41,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:41,603 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:22:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:42,021 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:22:42,363 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 17:22:42,366 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:22:42,366 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:22:42,366 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:22:42,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:22:42,398 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:22:42,399 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:22:42,402 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-14 17:22:50,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:22:50,950 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-14 17:22:50,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:22:50,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2018-09-14 17:22:50,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:22:50,988 INFO L225 Difference]: With dead ends: 2446 [2018-09-14 17:22:50,988 INFO L226 Difference]: Without dead ends: 1604 [2018-09-14 17:22:50,999 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 17:22:51,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-14 17:22:51,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-14 17:22:51,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-14 17:22:51,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-09-14 17:22:51,166 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 70 [2018-09-14 17:22:51,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:22:51,167 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-09-14 17:22:51,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:22:51,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-09-14 17:22:51,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-14 17:22:51,175 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:22:51,176 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, 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] [2018-09-14 17:22:51,176 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:22:51,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1190970174, now seen corresponding path program 1 times [2018-09-14 17:22:51,177 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:22:51,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:51,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:51,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:51,179 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:22:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:51,506 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:22:51,607 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:22:51,607 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:22:51,608 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:22:51,608 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:22:51,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:22:51,610 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:22:51,610 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:22:51,611 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-09-14 17:23:10,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:23:10,401 INFO L93 Difference]: Finished difference Result 6330 states and 12128 transitions. [2018-09-14 17:23:10,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:23:10,401 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-09-14 17:23:10,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:23:10,432 INFO L225 Difference]: With dead ends: 6330 [2018-09-14 17:23:10,432 INFO L226 Difference]: Without dead ends: 4732 [2018-09-14 17:23:10,442 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:23:10,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2018-09-14 17:23:10,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4700. [2018-09-14 17:23:10,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2018-09-14 17:23:10,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 7674 transitions. [2018-09-14 17:23:10,582 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 7674 transitions. Word has length 148 [2018-09-14 17:23:10,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:23:10,583 INFO L480 AbstractCegarLoop]: Abstraction has 4700 states and 7674 transitions. [2018-09-14 17:23:10,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:23:10,584 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 7674 transitions. [2018-09-14 17:23:10,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-14 17:23:10,589 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:23:10,589 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:23:10,589 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:23:10,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1674946466, now seen corresponding path program 1 times [2018-09-14 17:23:10,590 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:23:10,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:10,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:10,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:10,591 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:23:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:23:10,761 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:23:10,762 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:23:10,762 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:23:10,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:23:10,763 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:23:10,763 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:23:10,763 INFO L87 Difference]: Start difference. First operand 4700 states and 7674 transitions. Second operand 5 states. [2018-09-14 17:23:19,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:23:19,084 INFO L93 Difference]: Finished difference Result 14300 states and 23670 transitions. [2018-09-14 17:23:19,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:23:19,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2018-09-14 17:23:19,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:23:19,151 INFO L225 Difference]: With dead ends: 14300 [2018-09-14 17:23:19,151 INFO L226 Difference]: Without dead ends: 9606 [2018-09-14 17:23:19,173 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:23:19,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9606 states. [2018-09-14 17:23:19,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9606 to 9524. [2018-09-14 17:23:19,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9524 states. [2018-09-14 17:23:19,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9524 states to 9524 states and 14353 transitions. [2018-09-14 17:23:19,648 INFO L78 Accepts]: Start accepts. Automaton has 9524 states and 14353 transitions. Word has length 150 [2018-09-14 17:23:19,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:23:19,649 INFO L480 AbstractCegarLoop]: Abstraction has 9524 states and 14353 transitions. [2018-09-14 17:23:19,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:23:19,649 INFO L276 IsEmpty]: Start isEmpty. Operand 9524 states and 14353 transitions. [2018-09-14 17:23:19,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-09-14 17:23:19,655 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:23:19,655 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, 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] [2018-09-14 17:23:19,656 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:23:19,656 INFO L82 PathProgramCache]: Analyzing trace with hash -170361029, now seen corresponding path program 1 times [2018-09-14 17:23:19,656 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:23:19,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:19,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:19,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:19,663 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:23:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:20,175 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:23:20,175 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:23:20,175 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:23:20,176 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:23:20,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:23:20,176 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:23:20,176 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:23:20,177 INFO L87 Difference]: Start difference. First operand 9524 states and 14353 transitions. Second operand 6 states. [2018-09-14 17:23:34,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:23:34,744 INFO L93 Difference]: Finished difference Result 38073 states and 60988 transitions. [2018-09-14 17:23:34,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:23:34,747 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2018-09-14 17:23:34,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:23:34,892 INFO L225 Difference]: With dead ends: 38073 [2018-09-14 17:23:34,892 INFO L226 Difference]: Without dead ends: 28555 [2018-09-14 17:23:34,958 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-09-14 17:23:34,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28555 states. [2018-09-14 17:23:35,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28555 to 28503. [2018-09-14 17:23:35,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28503 states. [2018-09-14 17:23:35,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28503 states to 28503 states and 41645 transitions. [2018-09-14 17:23:35,729 INFO L78 Accepts]: Start accepts. Automaton has 28503 states and 41645 transitions. Word has length 161 [2018-09-14 17:23:35,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:23:35,730 INFO L480 AbstractCegarLoop]: Abstraction has 28503 states and 41645 transitions. [2018-09-14 17:23:35,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:23:35,730 INFO L276 IsEmpty]: Start isEmpty. Operand 28503 states and 41645 transitions. [2018-09-14 17:23:35,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-09-14 17:23:35,737 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:23:35,738 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:23:35,738 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:23:35,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1634908119, now seen corresponding path program 1 times [2018-09-14 17:23:35,739 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:23:35,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:35,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:35,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:35,740 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:23:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:36,079 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:23:36,460 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:23:36,461 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:23:36,461 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:23:36,461 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:23:36,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:23:36,462 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:23:36,462 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:23:36,464 INFO L87 Difference]: Start difference. First operand 28503 states and 41645 transitions. Second operand 6 states. [2018-09-14 17:23:49,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:23:49,858 INFO L93 Difference]: Finished difference Result 76147 states and 117645 transitions. [2018-09-14 17:23:49,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:23:49,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2018-09-14 17:23:49,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:23:50,071 INFO L225 Difference]: With dead ends: 76147 [2018-09-14 17:23:50,071 INFO L226 Difference]: Without dead ends: 47650 [2018-09-14 17:23:50,177 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:23:50,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47650 states. [2018-09-14 17:23:51,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47650 to 47493. [2018-09-14 17:23:51,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47493 states. [2018-09-14 17:23:51,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47493 states to 47493 states and 66759 transitions. [2018-09-14 17:23:51,286 INFO L78 Accepts]: Start accepts. Automaton has 47493 states and 66759 transitions. Word has length 195 [2018-09-14 17:23:51,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:23:51,286 INFO L480 AbstractCegarLoop]: Abstraction has 47493 states and 66759 transitions. [2018-09-14 17:23:51,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:23:51,287 INFO L276 IsEmpty]: Start isEmpty. Operand 47493 states and 66759 transitions. [2018-09-14 17:23:51,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-09-14 17:23:51,296 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:23:51,296 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, 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] [2018-09-14 17:23:51,297 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:23:51,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1213968518, now seen corresponding path program 1 times [2018-09-14 17:23:51,297 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:23:51,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:51,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:51,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:51,299 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:23:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:51,643 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:23:52,022 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-14 17:23:52,022 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:23:52,022 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 17:23:52,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:52,036 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:23:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:52,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:23:52,314 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:23:52,315 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:23:52,572 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:23:52,605 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:23:52,605 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2018-09-14 17:23:52,606 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:23:52,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:23:52,607 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:23:52,607 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:23:52,607 INFO L87 Difference]: Start difference. First operand 47493 states and 66759 transitions. Second operand 3 states. [2018-09-14 17:24:00,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:24:00,881 INFO L93 Difference]: Finished difference Result 136979 states and 202185 transitions. [2018-09-14 17:24:00,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:24:00,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2018-09-14 17:24:00,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:24:01,365 INFO L225 Difference]: With dead ends: 136979 [2018-09-14 17:24:01,365 INFO L226 Difference]: Without dead ends: 89492 [2018-09-14 17:24:01,584 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 430 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:24:01,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89492 states. [2018-09-14 17:24:03,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89492 to 89480. [2018-09-14 17:24:03,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89480 states. [2018-09-14 17:24:04,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89480 states to 89480 states and 127905 transitions. [2018-09-14 17:24:04,150 INFO L78 Accepts]: Start accepts. Automaton has 89480 states and 127905 transitions. Word has length 216 [2018-09-14 17:24:04,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:24:04,151 INFO L480 AbstractCegarLoop]: Abstraction has 89480 states and 127905 transitions. [2018-09-14 17:24:04,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:24:04,151 INFO L276 IsEmpty]: Start isEmpty. Operand 89480 states and 127905 transitions. [2018-09-14 17:24:04,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-09-14 17:24:04,172 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:24:04,172 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:24:04,172 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:24:04,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1803467909, now seen corresponding path program 1 times [2018-09-14 17:24:04,173 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:24:04,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:04,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:04,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:04,174 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:24:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:04,461 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:24:04,887 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 126 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:24:04,887 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:24:04,887 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 [2018-09-14 17:24:04,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:04,904 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:24:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:05,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:24:05,177 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 17:24:05,177 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:24:05,466 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 126 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:24:05,487 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:24:05,488 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 17:24:05,488 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:24:05,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:24:05,489 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:24:05,489 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:24:05,489 INFO L87 Difference]: Start difference. First operand 89480 states and 127905 transitions. Second operand 5 states. [2018-09-14 17:24:20,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:24:20,590 INFO L93 Difference]: Finished difference Result 231177 states and 355698 transitions. [2018-09-14 17:24:20,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:24:20,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 265 [2018-09-14 17:24:20,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:24:21,264 INFO L225 Difference]: With dead ends: 231177 [2018-09-14 17:24:21,264 INFO L226 Difference]: Without dead ends: 141703 [2018-09-14 17:24:22,325 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 524 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:24:22,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141703 states. [2018-09-14 17:24:24,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141703 to 140704. [2018-09-14 17:24:24,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140704 states. [2018-09-14 17:24:24,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140704 states to 140704 states and 204535 transitions. [2018-09-14 17:24:24,980 INFO L78 Accepts]: Start accepts. Automaton has 140704 states and 204535 transitions. Word has length 265 [2018-09-14 17:24:24,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:24:24,981 INFO L480 AbstractCegarLoop]: Abstraction has 140704 states and 204535 transitions. [2018-09-14 17:24:24,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:24:24,981 INFO L276 IsEmpty]: Start isEmpty. Operand 140704 states and 204535 transitions. [2018-09-14 17:24:25,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-09-14 17:24:25,019 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:24:25,019 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 17:24:25,019 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:24:25,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1106034577, now seen corresponding path program 1 times [2018-09-14 17:24:25,020 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:24:25,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:25,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:25,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:25,021 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:24:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:25,302 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 268 proven. 85 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 17:24:25,302 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:24:25,303 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 17:24:25,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:25,311 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:24:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:25,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:24:25,586 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 361 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 17:24:25,586 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:24:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 268 proven. 85 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 17:24:26,895 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:24:26,895 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 [2018-09-14 17:24:26,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:26,911 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:24:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:27,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:24:27,245 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 361 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 17:24:27,246 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:24:27,493 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 268 proven. 85 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 17:24:27,495 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:24:27,495 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:24:27,495 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:24:27,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:24:27,496 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:24:27,497 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:24:27,498 INFO L87 Difference]: Start difference. First operand 140704 states and 204535 transitions. Second operand 9 states. [2018-09-14 17:24:43,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:24:43,484 INFO L93 Difference]: Finished difference Result 314075 states and 520015 transitions. [2018-09-14 17:24:43,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 17:24:43,484 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 335 [2018-09-14 17:24:43,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:24:44,203 INFO L225 Difference]: With dead ends: 314075 [2018-09-14 17:24:44,204 INFO L226 Difference]: Without dead ends: 149069 [2018-09-14 17:24:44,534 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1356 GetRequests, 1336 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-09-14 17:24:44,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149069 states. [2018-09-14 17:24:47,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149069 to 136115. [2018-09-14 17:24:47,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136115 states. [2018-09-14 17:24:48,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136115 states to 136115 states and 193478 transitions. [2018-09-14 17:24:48,280 INFO L78 Accepts]: Start accepts. Automaton has 136115 states and 193478 transitions. Word has length 335 [2018-09-14 17:24:48,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:24:48,281 INFO L480 AbstractCegarLoop]: Abstraction has 136115 states and 193478 transitions. [2018-09-14 17:24:48,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:24:48,281 INFO L276 IsEmpty]: Start isEmpty. Operand 136115 states and 193478 transitions. [2018-09-14 17:24:48,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-09-14 17:24:48,304 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:24:48,305 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, 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] [2018-09-14 17:24:48,305 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:24:48,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1684264523, now seen corresponding path program 1 times [2018-09-14 17:24:48,306 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:24:48,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:48,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:48,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:48,307 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:24:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:48,680 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:24:48,680 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:24:48,681 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 17:24:48,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:48,690 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:24:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:48,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:24:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:24:49,949 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:24:50,143 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2018-09-14 17:24:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:24:51,448 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:24:51,448 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 12 [2018-09-14 17:24:51,448 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:24:51,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:24:51,450 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:24:51,450 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:24:51,450 INFO L87 Difference]: Start difference. First operand 136115 states and 193478 transitions. Second operand 5 states. [2018-09-14 17:25:03,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:25:03,030 INFO L93 Difference]: Finished difference Result 287172 states and 409666 transitions. [2018-09-14 17:25:03,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:25:03,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 345 [2018-09-14 17:25:03,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:25:03,537 INFO L225 Difference]: With dead ends: 287172 [2018-09-14 17:25:03,537 INFO L226 Difference]: Without dead ends: 151063 [2018-09-14 17:25:03,825 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 687 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:25:03,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151063 states. [2018-09-14 17:25:06,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151063 to 150868. [2018-09-14 17:25:06,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150868 states. [2018-09-14 17:25:06,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150868 states to 150868 states and 210976 transitions. [2018-09-14 17:25:06,979 INFO L78 Accepts]: Start accepts. Automaton has 150868 states and 210976 transitions. Word has length 345 [2018-09-14 17:25:06,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:25:06,980 INFO L480 AbstractCegarLoop]: Abstraction has 150868 states and 210976 transitions. [2018-09-14 17:25:06,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:25:06,980 INFO L276 IsEmpty]: Start isEmpty. Operand 150868 states and 210976 transitions. [2018-09-14 17:25:07,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2018-09-14 17:25:07,001 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:25:07,001 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, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:25:07,002 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:25:07,002 INFO L82 PathProgramCache]: Analyzing trace with hash 978952779, now seen corresponding path program 1 times [2018-09-14 17:25:07,002 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:25:07,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:07,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:07,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:07,003 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:25:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 195 proven. 164 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 17:25:07,301 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:25:07,301 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 [2018-09-14 17:25:07,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:07,310 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:25:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:12,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:25:12,614 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 367 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 17:25:12,615 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:25:12,766 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 271 proven. 78 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-14 17:25:12,786 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:25:12,787 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:25:12,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:12,802 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:25:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:13,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:25:13,265 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2018-09-14 17:25:13,266 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:25:13,507 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 197 proven. 155 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-14 17:25:13,509 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-14 17:25:13,510 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 13 [2018-09-14 17:25:13,510 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:25:13,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:25:13,511 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:25:13,512 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:25:13,512 INFO L87 Difference]: Start difference. First operand 150868 states and 210976 transitions. Second operand 5 states. [2018-09-14 17:25:22,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:25:22,733 INFO L93 Difference]: Finished difference Result 336329 states and 507549 transitions. [2018-09-14 17:25:22,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:25:22,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 381 [2018-09-14 17:25:22,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:25:23,339 INFO L225 Difference]: With dead ends: 336329 [2018-09-14 17:25:23,339 INFO L226 Difference]: Without dead ends: 186235 [2018-09-14 17:25:23,663 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1532 GetRequests, 1511 SyntacticMatches, 9 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:25:23,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186235 states. [2018-09-14 17:25:26,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186235 to 185412. [2018-09-14 17:25:26,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185412 states. [2018-09-14 17:25:28,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185412 states to 185412 states and 244400 transitions. [2018-09-14 17:25:28,446 INFO L78 Accepts]: Start accepts. Automaton has 185412 states and 244400 transitions. Word has length 381 [2018-09-14 17:25:28,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:25:28,447 INFO L480 AbstractCegarLoop]: Abstraction has 185412 states and 244400 transitions. [2018-09-14 17:25:28,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:25:28,447 INFO L276 IsEmpty]: Start isEmpty. Operand 185412 states and 244400 transitions. [2018-09-14 17:25:28,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2018-09-14 17:25:28,475 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:25:28,475 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:25:28,476 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:25:28,476 INFO L82 PathProgramCache]: Analyzing trace with hash -192496008, now seen corresponding path program 1 times [2018-09-14 17:25:28,476 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:25:28,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:28,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:28,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:28,477 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:25:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:28,814 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-14 17:25:29,269 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-09-14 17:25:29,760 WARN L178 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-09-14 17:25:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 428 proven. 240 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-14 17:25:30,317 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:25:30,317 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:25:30,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:30,326 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:25:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:30,459 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:25:30,624 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 598 proven. 2 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2018-09-14 17:25:30,624 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:25:30,891 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 421 proven. 78 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-09-14 17:25:30,913 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:25:30,913 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:25:30,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:30,928 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:25:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:31,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:25:31,906 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 598 proven. 2 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2018-09-14 17:25:31,907 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:25:32,239 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 421 proven. 78 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-09-14 17:25:32,242 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:25:32,242 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 5, 5] total 20 [2018-09-14 17:25:32,243 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:25:32,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-14 17:25:32,244 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-14 17:25:32,244 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2018-09-14 17:25:32,244 INFO L87 Difference]: Start difference. First operand 185412 states and 244400 transitions. Second operand 16 states. [2018-09-14 17:25:42,407 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2018-09-14 17:25:44,275 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2018-09-14 17:25:44,618 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2018-09-14 17:26:01,337 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 Received shutdown request... [2018-09-14 17:26:11,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-09-14 17:26:11,041 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:26:11,046 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:26:11,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:26:11 BoogieIcfgContainer [2018-09-14 17:26:11,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:26:11,047 INFO L168 Benchmark]: Toolchain (without parser) took 224319.74 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-09-14 17:26:11,048 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 17:26:11,049 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2282.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:26:11,050 INFO L168 Benchmark]: Boogie Procedure Inliner took 825.04 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 900.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.1 MB. Max. memory is 7.1 GB. [2018-09-14 17:26:11,050 INFO L168 Benchmark]: Boogie Preprocessor took 369.19 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. [2018-09-14 17:26:11,051 INFO L168 Benchmark]: RCFGBuilder took 11164.29 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 643.3 MB). Peak memory consumption was 643.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:26:11,052 INFO L168 Benchmark]: TraceAbstraction took 209672.04 ms. Allocated memory was 2.4 GB in the beginning and 4.9 GB in the end (delta: 2.4 GB). Free memory was 1.6 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-09-14 17:26:11,057 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 2282.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 825.04 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 900.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 369.19 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11164.29 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 643.3 MB). Peak memory consumption was 643.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209672.04 ms. Allocated memory was 2.4 GB in the beginning and 4.9 GB in the end (delta: 2.4 GB). Free memory was 1.6 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 201]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 201). Cancelled while BasicCegarLoop was constructing difference of abstraction (185412states) and FLOYD_HOARE automaton (currently 88 states, 16 states before enhancement), while ReachableStatesComputation was computing reachable states (102734 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 209.5s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 168.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2081 SDtfs, 46215 SDslu, 2519 SDs, 0 SdLazy, 82912 SolverSat, 15201 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 124.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6678 GetRequests, 6472 SyntacticMatches, 27 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3854 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=185412occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 19.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 15306 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 6.5s SatisfiabilityAnalysisTime, 12.5s InterpolantComputationTime, 5952 NumberOfCodeBlocks, 5952 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 9133 ConstructedInterpolants, 0 QuantifiedInterpolants, 15179013 SizeOfPredicates, 13 NumberOfNonLiveVariables, 5369 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 29 InterpolantComputations, 11 PerfectInterpolantSequences, 7988/9326 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label31_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-26-11-071.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label31_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-26-11-071.csv Completed graceful shutdown