java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label29_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 18:04:06,659 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 18:04:06,661 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 18:04:06,679 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 18:04:06,680 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 18:04:06,681 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 18:04:06,683 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 18:04:06,684 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 18:04:06,687 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 18:04:06,694 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 18:04:06,695 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 18:04:06,696 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 18:04:06,696 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 18:04:06,697 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 18:04:06,700 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 18:04:06,701 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 18:04:06,702 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 18:04:06,703 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 18:04:06,705 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 18:04:06,706 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 18:04:06,707 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 18:04:06,708 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 18:04:06,710 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 18:04:06,710 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 18:04:06,711 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 18:04:06,711 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 18:04:06,712 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 18:04:06,713 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 18:04:06,714 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 18:04:06,715 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 18:04:06,715 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 18:04:06,716 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 18:04:06,716 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 18:04:06,716 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 18:04:06,717 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 18:04:06,718 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 18:04:06,718 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 18:04:06,739 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 18:04:06,739 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 18:04:06,740 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 18:04:06,744 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 18:04:06,744 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 18:04:06,744 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 18:04:06,744 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 18:04:06,745 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 18:04:06,745 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 18:04:06,745 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 18:04:06,745 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 18:04:06,746 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 18:04:06,746 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 18:04:06,746 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 18:04:06,747 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 18:04:06,747 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 18:04:06,747 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 18:04:06,747 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 18:04:06,747 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 18:04:06,748 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 18:04:06,748 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 18:04:06,748 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 18:04:06,748 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 18:04:06,748 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:04:06,749 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 18:04:06,749 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 18:04:06,749 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 18:04:06,749 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 18:04:06,749 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 18:04:06,749 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 18:04:06,750 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 18:04:06,750 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 18:04:06,750 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 18:04:06,804 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 18:04:06,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 18:04:06,824 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 18:04:06,825 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 18:04:06,825 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 18:04:06,826 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label29_true-unreach-call.c [2018-09-14 18:04:07,065 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ee6ea638/4819848b7e9043cfb21fb6f55c77d689/FLAG9357665b9 [2018-09-14 18:04:07,576 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 18:04:07,578 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label29_true-unreach-call.c [2018-09-14 18:04:07,605 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ee6ea638/4819848b7e9043cfb21fb6f55c77d689/FLAG9357665b9 [2018-09-14 18:04:07,621 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ee6ea638/4819848b7e9043cfb21fb6f55c77d689 [2018-09-14 18:04:07,632 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 18:04:07,636 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 18:04:07,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 18:04:07,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 18:04:07,644 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 18:04:07,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:04:07" (1/1) ... [2018-09-14 18:04:07,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e23974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:07, skipping insertion in model container [2018-09-14 18:04:07,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:04:07" (1/1) ... [2018-09-14 18:04:07,660 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 18:04:08,682 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:04:08,703 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 18:04:09,134 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:04:09,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:09 WrapperNode [2018-09-14 18:04:09,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 18:04:09,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 18:04:09,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 18:04:09,374 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 18:04:09,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:09" (1/1) ... [2018-09-14 18:04:09,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:09" (1/1) ... [2018-09-14 18:04:09,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 18:04:09,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 18:04:09,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 18:04:09,657 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 18:04:10,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:09" (1/1) ... [2018-09-14 18:04:10,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:09" (1/1) ... [2018-09-14 18:04:10,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:09" (1/1) ... [2018-09-14 18:04:10,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:09" (1/1) ... [2018-09-14 18:04:10,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:09" (1/1) ... [2018-09-14 18:04:10,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:09" (1/1) ... [2018-09-14 18:04:10,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:09" (1/1) ... [2018-09-14 18:04:10,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 18:04:10,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 18:04:10,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 18:04:10,535 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 18:04:10,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:09" (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 18:04:10,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 18:04:10,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 18:04:10,614 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 18:04:10,614 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 18:04:10,615 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 18:04:10,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 18:04:10,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 18:04:10,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 18:04:10,615 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 18:04:10,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 18:04:22,676 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 18:04:22,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:04:22 BoogieIcfgContainer [2018-09-14 18:04:22,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 18:04:22,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 18:04:22,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 18:04:22,682 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 18:04:22,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 06:04:07" (1/3) ... [2018-09-14 18:04:22,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f318b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:04:22, skipping insertion in model container [2018-09-14 18:04:22,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:09" (2/3) ... [2018-09-14 18:04:22,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f318b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:04:22, skipping insertion in model container [2018-09-14 18:04:22,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:04:22" (3/3) ... [2018-09-14 18:04:22,685 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label29_true-unreach-call.c [2018-09-14 18:04:22,695 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 18:04:22,704 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 18:04:22,763 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 18:04:22,764 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 18:04:22,764 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 18:04:22,764 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 18:04:22,765 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 18:04:22,765 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 18:04:22,765 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 18:04:22,765 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 18:04:22,765 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 18:04:22,811 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-14 18:04:22,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-14 18:04:22,825 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:04:22,826 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, 1, 1] [2018-09-14 18:04:22,827 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:04:22,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1965894100, now seen corresponding path program 1 times [2018-09-14 18:04:22,834 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:04:22,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:22,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:04:22,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:22,886 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:04:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:04:23,423 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-09-14 18:04:23,443 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 18:04:23,445 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:04:23,445 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:04:23,446 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:04:23,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:04:23,467 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:04:23,468 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:04:23,471 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-14 18:04:35,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:04:35,769 INFO L93 Difference]: Finished difference Result 2166 states and 4013 transitions. [2018-09-14 18:04:35,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:04:35,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2018-09-14 18:04:35,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:04:35,805 INFO L225 Difference]: With dead ends: 2166 [2018-09-14 18:04:35,806 INFO L226 Difference]: Without dead ends: 1556 [2018-09-14 18:04:35,819 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:04:35,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2018-09-14 18:04:35,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1068. [2018-09-14 18:04:35,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-09-14 18:04:35,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1850 transitions. [2018-09-14 18:04:35,956 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1850 transitions. Word has length 72 [2018-09-14 18:04:35,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:04:35,957 INFO L480 AbstractCegarLoop]: Abstraction has 1068 states and 1850 transitions. [2018-09-14 18:04:35,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:04:35,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1850 transitions. [2018-09-14 18:04:35,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-14 18:04:35,973 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:04:35,973 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:04:35,973 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:04:35,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1274618542, now seen corresponding path program 1 times [2018-09-14 18:04:35,974 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:04:35,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:35,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:04:35,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:35,976 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:04:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:04:36,386 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:04:36,387 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:04:36,387 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:04:36,387 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:04:36,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:04:36,389 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:04:36,389 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:04:36,390 INFO L87 Difference]: Start difference. First operand 1068 states and 1850 transitions. Second operand 6 states. [2018-09-14 18:04:45,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:04:45,540 INFO L93 Difference]: Finished difference Result 3059 states and 5419 transitions. [2018-09-14 18:04:45,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:04:45,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-09-14 18:04:45,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:04:45,558 INFO L225 Difference]: With dead ends: 3059 [2018-09-14 18:04:45,558 INFO L226 Difference]: Without dead ends: 1997 [2018-09-14 18:04:45,562 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 18:04:45,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2018-09-14 18:04:45,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1975. [2018-09-14 18:04:45,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2018-09-14 18:04:45,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3181 transitions. [2018-09-14 18:04:45,651 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3181 transitions. Word has length 148 [2018-09-14 18:04:45,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:04:45,652 INFO L480 AbstractCegarLoop]: Abstraction has 1975 states and 3181 transitions. [2018-09-14 18:04:45,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:04:45,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3181 transitions. [2018-09-14 18:04:45,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-09-14 18:04:45,662 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:04:45,663 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, 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 18:04:45,664 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:04:45,664 INFO L82 PathProgramCache]: Analyzing trace with hash -73480886, now seen corresponding path program 1 times [2018-09-14 18:04:45,664 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:04:45,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:45,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:04:45,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:45,666 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:04:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:04:45,949 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:04:45,950 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:04:45,950 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:04:45,950 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:04:45,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:04:45,951 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:04:45,951 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:04:45,952 INFO L87 Difference]: Start difference. First operand 1975 states and 3181 transitions. Second operand 6 states. [2018-09-14 18:04:51,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:04:51,884 INFO L93 Difference]: Finished difference Result 4880 states and 7834 transitions. [2018-09-14 18:04:51,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:04:51,885 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2018-09-14 18:04:51,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:04:51,903 INFO L225 Difference]: With dead ends: 4880 [2018-09-14 18:04:51,903 INFO L226 Difference]: Without dead ends: 2911 [2018-09-14 18:04:51,912 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:04:51,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-09-14 18:04:51,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2880. [2018-09-14 18:04:51,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-09-14 18:04:52,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3936 transitions. [2018-09-14 18:04:52,006 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3936 transitions. Word has length 152 [2018-09-14 18:04:52,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:04:52,007 INFO L480 AbstractCegarLoop]: Abstraction has 2880 states and 3936 transitions. [2018-09-14 18:04:52,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:04:52,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3936 transitions. [2018-09-14 18:04:52,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-09-14 18:04:52,013 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:04:52,013 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, 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] [2018-09-14 18:04:52,014 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:04:52,014 INFO L82 PathProgramCache]: Analyzing trace with hash 363729319, now seen corresponding path program 1 times [2018-09-14 18:04:52,014 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:04:52,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:52,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:04:52,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:52,015 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:04:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:04:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:04:52,281 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:04:52,281 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:04:52,281 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:04:52,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:04:52,282 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:04:52,282 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:04:52,283 INFO L87 Difference]: Start difference. First operand 2880 states and 3936 transitions. Second operand 4 states. [2018-09-14 18:04:59,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:04:59,288 INFO L93 Difference]: Finished difference Result 5754 states and 7882 transitions. [2018-09-14 18:04:59,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:04:59,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 182 [2018-09-14 18:04:59,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:04:59,301 INFO L225 Difference]: With dead ends: 5754 [2018-09-14 18:04:59,302 INFO L226 Difference]: Without dead ends: 2880 [2018-09-14 18:04:59,312 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:04:59,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2018-09-14 18:04:59,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2880. [2018-09-14 18:04:59,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-09-14 18:04:59,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3720 transitions. [2018-09-14 18:04:59,373 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3720 transitions. Word has length 182 [2018-09-14 18:04:59,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:04:59,374 INFO L480 AbstractCegarLoop]: Abstraction has 2880 states and 3720 transitions. [2018-09-14 18:04:59,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:04:59,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3720 transitions. [2018-09-14 18:04:59,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-09-14 18:04:59,378 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:04:59,378 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, 3, 3, 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] [2018-09-14 18:04:59,378 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:04:59,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1344568352, now seen corresponding path program 1 times [2018-09-14 18:04:59,379 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:04:59,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:59,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:04:59,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:59,380 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:04:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:04:59,683 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-09-14 18:04:59,684 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:04:59,684 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:04:59,684 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:04:59,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:04:59,685 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:04:59,685 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:04:59,685 INFO L87 Difference]: Start difference. First operand 2880 states and 3720 transitions. Second operand 4 states. [2018-09-14 18:05:06,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:05:06,955 INFO L93 Difference]: Finished difference Result 11049 states and 14698 transitions. [2018-09-14 18:05:06,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:05:06,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 236 [2018-09-14 18:05:06,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:05:06,996 INFO L225 Difference]: With dead ends: 11049 [2018-09-14 18:05:06,996 INFO L226 Difference]: Without dead ends: 8175 [2018-09-14 18:05:07,009 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:05:07,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8175 states. [2018-09-14 18:05:07,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8175 to 8171. [2018-09-14 18:05:07,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8171 states. [2018-09-14 18:05:07,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8171 states to 8171 states and 9880 transitions. [2018-09-14 18:05:07,334 INFO L78 Accepts]: Start accepts. Automaton has 8171 states and 9880 transitions. Word has length 236 [2018-09-14 18:05:07,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:05:07,334 INFO L480 AbstractCegarLoop]: Abstraction has 8171 states and 9880 transitions. [2018-09-14 18:05:07,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:05:07,335 INFO L276 IsEmpty]: Start isEmpty. Operand 8171 states and 9880 transitions. [2018-09-14 18:05:07,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-09-14 18:05:07,343 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:05:07,343 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:05:07,344 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:05:07,344 INFO L82 PathProgramCache]: Analyzing trace with hash -522914045, now seen corresponding path program 1 times [2018-09-14 18:05:07,344 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:05:07,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:07,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:07,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:07,349 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:05:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:07,931 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 130 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:05:07,932 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:05:07,932 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 18:05:07,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:07,942 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:05:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:08,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:05:08,694 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-09-14 18:05:08,835 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-09-14 18:05:08,835 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:05:09,388 WARN L178 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-09-14 18:05:10,235 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2018-09-14 18:05:10,733 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 130 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:05:10,760 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:05:10,760 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 18:05:10,760 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:05:10,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:05:10,762 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:05:10,762 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-09-14 18:05:10,762 INFO L87 Difference]: Start difference. First operand 8171 states and 9880 transitions. Second operand 5 states. [2018-09-14 18:05:20,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:05:20,320 INFO L93 Difference]: Finished difference Result 19150 states and 23023 transitions. [2018-09-14 18:05:20,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:05:20,321 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 259 [2018-09-14 18:05:20,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:05:20,380 INFO L225 Difference]: With dead ends: 19150 [2018-09-14 18:05:20,380 INFO L226 Difference]: Without dead ends: 10985 [2018-09-14 18:05:20,410 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 514 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-09-14 18:05:20,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10985 states. [2018-09-14 18:05:20,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10985 to 10934. [2018-09-14 18:05:20,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10934 states. [2018-09-14 18:05:20,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10934 states to 10934 states and 13049 transitions. [2018-09-14 18:05:20,697 INFO L78 Accepts]: Start accepts. Automaton has 10934 states and 13049 transitions. Word has length 259 [2018-09-14 18:05:20,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:05:20,698 INFO L480 AbstractCegarLoop]: Abstraction has 10934 states and 13049 transitions. [2018-09-14 18:05:20,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:05:20,698 INFO L276 IsEmpty]: Start isEmpty. Operand 10934 states and 13049 transitions. [2018-09-14 18:05:20,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-09-14 18:05:20,719 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:05:20,719 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, 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, 1, 1, 1, 1, 1, 1, 1, 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 18:05:20,720 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:05:20,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1507360391, now seen corresponding path program 1 times [2018-09-14 18:05:20,720 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:05:20,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:20,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:20,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:20,722 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:05:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:21,195 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 18:05:21,196 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:05:21,196 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:05:21,196 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:05:21,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:05:21,197 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:05:21,197 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:05:21,197 INFO L87 Difference]: Start difference. First operand 10934 states and 13049 transitions. Second operand 4 states. [2018-09-14 18:05:29,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:05:29,278 INFO L93 Difference]: Finished difference Result 28822 states and 35063 transitions. [2018-09-14 18:05:29,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:05:29,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 302 [2018-09-14 18:05:29,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:05:29,334 INFO L225 Difference]: With dead ends: 28822 [2018-09-14 18:05:29,334 INFO L226 Difference]: Without dead ends: 17894 [2018-09-14 18:05:29,379 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:05:29,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17894 states. [2018-09-14 18:05:29,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17894 to 17877. [2018-09-14 18:05:29,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17877 states. [2018-09-14 18:05:29,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17877 states to 17877 states and 21038 transitions. [2018-09-14 18:05:29,952 INFO L78 Accepts]: Start accepts. Automaton has 17877 states and 21038 transitions. Word has length 302 [2018-09-14 18:05:29,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:05:29,952 INFO L480 AbstractCegarLoop]: Abstraction has 17877 states and 21038 transitions. [2018-09-14 18:05:29,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:05:29,953 INFO L276 IsEmpty]: Start isEmpty. Operand 17877 states and 21038 transitions. [2018-09-14 18:05:29,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-09-14 18:05:29,967 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:05:29,968 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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 18:05:29,968 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:05:29,969 INFO L82 PathProgramCache]: Analyzing trace with hash -959165458, now seen corresponding path program 1 times [2018-09-14 18:05:29,969 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:05:29,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:29,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:29,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:29,971 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:05:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:30,602 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 205 proven. 142 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 18:05:30,602 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:05:30,603 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 18:05:30,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:30,613 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:05:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:30,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:05:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 284 proven. 2 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2018-09-14 18:05:31,115 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:05:34,222 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2018-09-14 18:05:34,788 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 205 proven. 211 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:05:34,817 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:05:34,818 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:05:34,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:34,846 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:05:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:35,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:05:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 284 proven. 2 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2018-09-14 18:05:35,228 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:05:35,811 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 205 proven. 211 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:05:35,813 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:05:35,813 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8, 7, 8] total 16 [2018-09-14 18:05:35,813 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:05:35,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-14 18:05:35,815 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-14 18:05:35,815 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2018-09-14 18:05:35,815 INFO L87 Difference]: Start difference. First operand 17877 states and 21038 transitions. Second operand 10 states. [2018-09-14 18:05:56,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:05:56,752 INFO L93 Difference]: Finished difference Result 54496 states and 67344 transitions. [2018-09-14 18:05:56,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-14 18:05:56,753 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 311 [2018-09-14 18:05:56,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:05:56,899 INFO L225 Difference]: With dead ends: 54496 [2018-09-14 18:05:56,899 INFO L226 Difference]: Without dead ends: 36625 [2018-09-14 18:05:57,193 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1264 GetRequests, 1238 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2018-09-14 18:05:57,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36625 states. [2018-09-14 18:05:57,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36625 to 34836. [2018-09-14 18:05:57,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34836 states. [2018-09-14 18:05:57,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34836 states to 34836 states and 42424 transitions. [2018-09-14 18:05:57,829 INFO L78 Accepts]: Start accepts. Automaton has 34836 states and 42424 transitions. Word has length 311 [2018-09-14 18:05:57,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:05:57,829 INFO L480 AbstractCegarLoop]: Abstraction has 34836 states and 42424 transitions. [2018-09-14 18:05:57,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-14 18:05:57,830 INFO L276 IsEmpty]: Start isEmpty. Operand 34836 states and 42424 transitions. [2018-09-14 18:05:57,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-09-14 18:05:57,848 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:05:57,848 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:05:57,849 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:05:57,849 INFO L82 PathProgramCache]: Analyzing trace with hash -784168627, now seen corresponding path program 1 times [2018-09-14 18:05:57,849 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:05:57,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:57,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:57,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:57,850 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:05:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:58,269 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-09-14 18:05:58,337 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2018-09-14 18:05:58,337 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:05:58,338 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:05:58,338 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:05:58,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:05:58,339 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:05:58,339 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:05:58,339 INFO L87 Difference]: Start difference. First operand 34836 states and 42424 transitions. Second operand 4 states. [2018-09-14 18:06:05,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:06:05,385 INFO L93 Difference]: Finished difference Result 87473 states and 109074 transitions. [2018-09-14 18:06:05,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:06:05,397 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 334 [2018-09-14 18:06:05,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:06:05,557 INFO L225 Difference]: With dead ends: 87473 [2018-09-14 18:06:05,557 INFO L226 Difference]: Without dead ends: 53084 [2018-09-14 18:06:05,646 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:06:05,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53084 states. [2018-09-14 18:06:06,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53084 to 44101. [2018-09-14 18:06:06,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44101 states. [2018-09-14 18:06:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44101 states to 44101 states and 52958 transitions. [2018-09-14 18:06:06,894 INFO L78 Accepts]: Start accepts. Automaton has 44101 states and 52958 transitions. Word has length 334 [2018-09-14 18:06:06,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:06:06,895 INFO L480 AbstractCegarLoop]: Abstraction has 44101 states and 52958 transitions. [2018-09-14 18:06:06,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:06:06,895 INFO L276 IsEmpty]: Start isEmpty. Operand 44101 states and 52958 transitions. [2018-09-14 18:06:06,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-09-14 18:06:06,930 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:06:06,930 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, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:06:06,930 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:06:06,931 INFO L82 PathProgramCache]: Analyzing trace with hash -416043221, now seen corresponding path program 1 times [2018-09-14 18:06:06,931 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:06:06,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:06,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:06,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:06,932 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:06:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:07,553 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2018-09-14 18:06:07,761 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-09-14 18:06:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 438 proven. 128 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-09-14 18:06:07,961 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:06:07,961 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 18:06:07,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:07,970 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:06:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:08,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:06:08,369 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 502 proven. 2 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2018-09-14 18:06:08,369 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:06:08,787 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 343 proven. 147 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2018-09-14 18:06:08,808 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:06:08,809 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:06:08,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:08,825 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:06:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:09,124 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:06:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 430 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-14 18:06:10,345 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:06:10,964 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 273 proven. 281 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2018-09-14 18:06:10,967 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:06:10,967 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-14 18:06:10,967 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:06:10,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:06:10,968 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:06:10,969 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-09-14 18:06:10,969 INFO L87 Difference]: Start difference. First operand 44101 states and 52958 transitions. Second operand 9 states. [2018-09-14 18:06:34,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:06:34,857 INFO L93 Difference]: Finished difference Result 109387 states and 131744 transitions. [2018-09-14 18:06:34,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-14 18:06:34,857 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 408 [2018-09-14 18:06:34,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:06:35,015 INFO L225 Difference]: With dead ends: 109387 [2018-09-14 18:06:35,016 INFO L226 Difference]: Without dead ends: 56677 [2018-09-14 18:06:35,116 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1701 GetRequests, 1652 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=463, Invalid=1793, Unknown=0, NotChecked=0, Total=2256 [2018-09-14 18:06:35,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56677 states. [2018-09-14 18:06:35,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56677 to 48320. [2018-09-14 18:06:35,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48320 states. [2018-09-14 18:06:35,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48320 states to 48320 states and 55934 transitions. [2018-09-14 18:06:35,850 INFO L78 Accepts]: Start accepts. Automaton has 48320 states and 55934 transitions. Word has length 408 [2018-09-14 18:06:35,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:06:35,851 INFO L480 AbstractCegarLoop]: Abstraction has 48320 states and 55934 transitions. [2018-09-14 18:06:35,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:06:35,851 INFO L276 IsEmpty]: Start isEmpty. Operand 48320 states and 55934 transitions. [2018-09-14 18:06:35,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-09-14 18:06:35,878 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:06:35,878 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, 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, 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] [2018-09-14 18:06:35,879 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:06:35,879 INFO L82 PathProgramCache]: Analyzing trace with hash -391323874, now seen corresponding path program 1 times [2018-09-14 18:06:35,879 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:06:35,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:35,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:35,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:35,880 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:06:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:36,286 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-09-14 18:06:36,286 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:06:36,287 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 18:06:36,287 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:06:36,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:06:36,288 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:06:36,288 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:06:36,288 INFO L87 Difference]: Start difference. First operand 48320 states and 55934 transitions. Second operand 3 states. [2018-09-14 18:06:42,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:06:42,021 INFO L93 Difference]: Finished difference Result 121518 states and 141943 transitions. [2018-09-14 18:06:42,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:06:42,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 467 [2018-09-14 18:06:42,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:06:42,138 INFO L225 Difference]: With dead ends: 121518 [2018-09-14 18:06:42,138 INFO L226 Difference]: Without dead ends: 50685 [2018-09-14 18:06:42,257 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:06:42,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50685 states. [2018-09-14 18:06:42,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50685 to 46754. [2018-09-14 18:06:42,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46754 states. [2018-09-14 18:06:42,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46754 states to 46754 states and 54053 transitions. [2018-09-14 18:06:42,943 INFO L78 Accepts]: Start accepts. Automaton has 46754 states and 54053 transitions. Word has length 467 [2018-09-14 18:06:42,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:06:42,944 INFO L480 AbstractCegarLoop]: Abstraction has 46754 states and 54053 transitions. [2018-09-14 18:06:42,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:06:42,944 INFO L276 IsEmpty]: Start isEmpty. Operand 46754 states and 54053 transitions. [2018-09-14 18:06:43,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2018-09-14 18:06:43,011 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:06:43,012 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, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:06:43,013 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:06:43,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1160423485, now seen corresponding path program 1 times [2018-09-14 18:06:43,013 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:06:43,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:43,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:43,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:43,015 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:06:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:43,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 273 proven. 4 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2018-09-14 18:06:43,714 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:06:43,714 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 18:06:43,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:43,732 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:06:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:43,944 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:06:44,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 677 proven. 0 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2018-09-14 18:06:44,584 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:06:44,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 273 proven. 4 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2018-09-14 18:06:44,911 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:06:44,911 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 3 [2018-09-14 18:06:44,911 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:06:44,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:06:44,912 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:06:44,912 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:06:44,913 INFO L87 Difference]: Start difference. First operand 46754 states and 54053 transitions. Second operand 3 states. [2018-09-14 18:06:47,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:06:47,915 INFO L93 Difference]: Finished difference Result 107887 states and 125601 transitions. [2018-09-14 18:06:47,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:06:47,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 783 [2018-09-14 18:06:47,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:06:48,077 INFO L225 Difference]: With dead ends: 107887 [2018-09-14 18:06:48,077 INFO L226 Difference]: Without dead ends: 61574 [2018-09-14 18:06:48,147 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1568 GetRequests, 1567 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:06:48,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61574 states. [2018-09-14 18:06:48,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61574 to 59400. [2018-09-14 18:06:48,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59400 states. [2018-09-14 18:06:49,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59400 states to 59400 states and 68478 transitions. [2018-09-14 18:06:49,501 INFO L78 Accepts]: Start accepts. Automaton has 59400 states and 68478 transitions. Word has length 783 [2018-09-14 18:06:49,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:06:49,502 INFO L480 AbstractCegarLoop]: Abstraction has 59400 states and 68478 transitions. [2018-09-14 18:06:49,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:06:49,503 INFO L276 IsEmpty]: Start isEmpty. Operand 59400 states and 68478 transitions. [2018-09-14 18:06:49,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2018-09-14 18:06:49,555 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:06:49,556 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, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:49,556 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:06:49,557 INFO L82 PathProgramCache]: Analyzing trace with hash -305601791, now seen corresponding path program 1 times [2018-09-14 18:06:49,557 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:06:49,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:49,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:49,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:49,558 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:06:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 276 proven. 2 refuted. 0 times theorem prover too weak. 711 trivial. 0 not checked. [2018-09-14 18:06:50,565 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:06:50,565 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 18:06:50,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:50,582 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:06:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:50,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:06:51,489 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 811 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2018-09-14 18:06:51,489 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:06:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 282 proven. 8 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked. [2018-09-14 18:06:52,483 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:06:52,484 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2018-09-14 18:06:52,484 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:06:52,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:06:52,485 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:06:52,485 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:06:52,486 INFO L87 Difference]: Start difference. First operand 59400 states and 68478 transitions. Second operand 3 states. [2018-09-14 18:06:54,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:06:54,432 INFO L93 Difference]: Finished difference Result 116582 states and 134424 transitions. [2018-09-14 18:06:54,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:06:54,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 851 [2018-09-14 18:06:54,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:06:54,547 INFO L225 Difference]: With dead ends: 116582 [2018-09-14 18:06:54,548 INFO L226 Difference]: Without dead ends: 57621 [2018-09-14 18:06:54,610 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1705 GetRequests, 1697 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:06:54,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57621 states. [2018-09-14 18:06:55,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57621 to 57185. [2018-09-14 18:06:55,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57185 states. [2018-09-14 18:06:55,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57185 states to 57185 states and 65753 transitions. [2018-09-14 18:06:55,269 INFO L78 Accepts]: Start accepts. Automaton has 57185 states and 65753 transitions. Word has length 851 [2018-09-14 18:06:55,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:06:55,270 INFO L480 AbstractCegarLoop]: Abstraction has 57185 states and 65753 transitions. [2018-09-14 18:06:55,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:06:55,270 INFO L276 IsEmpty]: Start isEmpty. Operand 57185 states and 65753 transitions. [2018-09-14 18:06:55,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2018-09-14 18:06:55,322 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:06:55,323 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, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:55,323 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:06:55,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1929877086, now seen corresponding path program 1 times [2018-09-14 18:06:55,324 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:06:55,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:55,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:55,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:55,325 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:06:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 265 proven. 32 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2018-09-14 18:06:58,836 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:06:58,836 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 18:06:58,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:58,846 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:06:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:59,095 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:07:38,658 WARN L178 SmtUtils]: Spent 31.53 s on a formula simplification. DAG size of input: 433 DAG size of output: 19 [2018-09-14 18:07:43,637 WARN L178 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 42 [2018-09-14 18:07:55,463 WARN L178 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2018-09-14 18:07:57,365 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 623 proven. 61 refuted. 2 times theorem prover too weak. 256 trivial. 0 not checked. [2018-09-14 18:07:57,366 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:08:03,283 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 684 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-09-14 18:08:03,303 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:08:03,304 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 18:08:03,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:08:03,320 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:08:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:08:03,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-09-14 18:08:04,599 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-14 18:08:04,801 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:08:04,801 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:08:04,806 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:08:04,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:08:04 BoogieIcfgContainer [2018-09-14 18:08:04,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:08:04,808 INFO L168 Benchmark]: Toolchain (without parser) took 237174.77 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -352.1 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-09-14 18:08:04,809 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 18:08:04,809 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1735.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-09-14 18:08:04,810 INFO L168 Benchmark]: Boogie Procedure Inliner took 282.53 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. [2018-09-14 18:08:04,811 INFO L168 Benchmark]: Boogie Preprocessor took 878.52 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 939.5 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 123.5 MB. Max. memory is 7.1 GB. [2018-09-14 18:08:04,812 INFO L168 Benchmark]: RCFGBuilder took 12141.93 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.9 GB in the end (delta: 460.4 MB). Peak memory consumption was 460.4 MB. Max. memory is 7.1 GB. [2018-09-14 18:08:04,813 INFO L168 Benchmark]: TraceAbstraction took 222129.02 ms. Allocated memory was 2.5 GB in the beginning and 3.9 GB in the end (delta: 1.4 GB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 118.5 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-09-14 18:08:04,822 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1735.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 282.53 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 878.52 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 939.5 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 123.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12141.93 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.9 GB in the end (delta: 460.4 MB). Peak memory consumption was 460.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222129.02 ms. Allocated memory was 2.5 GB in the beginning and 3.9 GB in the end (delta: 1.4 GB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 118.5 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 203]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 203). Cancelled while BasicCegarLoop was analyzing trace of length 904 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 18 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 222.0s OverallTime, 14 OverallIterations, 5 TraceHistogramMax, 123.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6127 SDtfs, 22470 SDslu, 3429 SDs, 0 SdLazy, 40746 SolverSat, 9708 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 105.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6816 GetRequests, 6692 SyntacticMatches, 15 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59400occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.8s AutomataMinimizationTime, 13 MinimizatonAttempts, 26283 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 17.5s InterpolantComputationTime, 7836 NumberOfCodeBlocks, 7836 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 11140 ConstructedInterpolants, 186 QuantifiedInterpolants, 13132384 SizeOfPredicates, 18 NumberOfNonLiveVariables, 5104 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 27 InterpolantComputations, 11 PerfectInterpolantSequences, 12568/13858 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label29_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-08-04-852.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label29_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-08-04-852.csv Completed graceful shutdown