java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:30:57,806 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:30:57,808 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:30:57,820 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:30:57,821 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:30:57,822 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:30:57,823 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:30:57,825 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:30:57,827 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:30:57,827 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:30:57,828 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:30:57,829 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:30:57,830 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:30:57,831 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:30:57,832 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:30:57,833 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:30:57,833 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:30:57,835 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:30:57,838 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:30:57,839 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:30:57,841 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:30:57,842 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:30:57,848 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-18 11:30:57,854 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:30:57,855 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:30:57,856 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:30:57,856 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:30:57,857 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 11:30:57,882 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:30:57,882 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:30:57,883 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:30:57,883 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:30:57,884 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:30:57,884 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:30:57,884 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:30:57,884 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:30:57,884 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:30:57,885 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:30:57,885 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:30:57,885 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:30:57,886 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:30:57,886 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:30:57,886 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:30:57,887 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:30:57,888 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:30:57,888 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:30:57,888 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:30:57,888 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:30:57,888 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:30:57,889 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:30:57,889 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:30:57,889 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:30:57,889 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:30:57,889 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:30:57,889 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:30:57,890 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:30:57,890 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:30:57,890 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:30:57,890 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:30:57,891 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:30:57,891 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:30:57,891 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:30:57,944 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:30:57,961 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:30:57,968 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:30:57,969 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:30:57,970 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:30:57,971 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label24_true-unreach-call.c [2018-09-18 11:30:58,365 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/371af4386/60fb6368451d471a89271bb865fe75f3/FLAG510b57ebe [2018-09-18 11:30:58,821 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:30:58,822 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label24_true-unreach-call.c [2018-09-18 11:30:58,855 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/371af4386/60fb6368451d471a89271bb865fe75f3/FLAG510b57ebe [2018-09-18 11:30:58,871 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/371af4386/60fb6368451d471a89271bb865fe75f3 [2018-09-18 11:30:58,884 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:30:58,887 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:30:58,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:30:58,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:30:58,896 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:30:58,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:30:58" (1/1) ... [2018-09-18 11:30:58,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e59f23c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:58, skipping insertion in model container [2018-09-18 11:30:58,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:30:58" (1/1) ... [2018-09-18 11:30:58,914 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:31:00,150 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:31:00,171 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:31:00,766 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:31:01,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:31:01 WrapperNode [2018-09-18 11:31:01,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:31:01,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:31:01,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:31:01,032 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:31:01,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:31:01" (1/1) ... [2018-09-18 11:31:01,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:31:01" (1/1) ... [2018-09-18 11:31:01,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:31:01,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:31:01,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:31:01,296 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:31:01,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:31:01" (1/1) ... [2018-09-18 11:31:01,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:31:01" (1/1) ... [2018-09-18 11:31:01,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:31:01" (1/1) ... [2018-09-18 11:31:01,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:31:01" (1/1) ... [2018-09-18 11:31:02,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:31:01" (1/1) ... [2018-09-18 11:31:02,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:31:01" (1/1) ... [2018-09-18 11:31:02,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:31:01" (1/1) ... [2018-09-18 11:31:02,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:31:02,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:31:02,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:31:02,166 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:31:02,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:31:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:31:02,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:31:02,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:31:02,244 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 11:31:02,244 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 11:31:02,244 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 11:31:02,244 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 11:31:02,244 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 11:31:02,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 11:31:02,245 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:31:02,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:31:02,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:31:02,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:31:02,246 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:31:02,246 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:31:12,587 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:31:12,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:31:12 BoogieIcfgContainer [2018-09-18 11:31:12,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:31:12,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:31:12,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:31:12,592 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:31:12,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:30:58" (1/3) ... [2018-09-18 11:31:12,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f10f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:31:12, skipping insertion in model container [2018-09-18 11:31:12,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:31:01" (2/3) ... [2018-09-18 11:31:12,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f10f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:31:12, skipping insertion in model container [2018-09-18 11:31:12,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:31:12" (3/3) ... [2018-09-18 11:31:12,596 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label24_true-unreach-call.c [2018-09-18 11:31:12,606 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:31:12,615 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:31:12,681 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:31:12,682 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:31:12,682 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:31:12,682 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:31:12,683 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:31:12,683 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:31:12,683 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:31:12,683 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:31:12,683 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:31:12,729 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-18 11:31:12,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-18 11:31:12,739 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:31:12,741 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:31:12,742 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:31:12,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1344002707, now seen corresponding path program 1 times [2018-09-18 11:31:12,751 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:31:12,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:12,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:12,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:12,800 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:31:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:13,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:13,333 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:31:13,333 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:31:13,334 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:31:13,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:31:13,356 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:31:13,357 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:31:13,360 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-18 11:31:21,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:31:21,799 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-18 11:31:21,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:31:21,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2018-09-18 11:31:21,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:31:21,831 INFO L225 Difference]: With dead ends: 2446 [2018-09-18 11:31:21,831 INFO L226 Difference]: Without dead ends: 1604 [2018-09-18 11:31:21,841 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:31:21,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-18 11:31:21,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-18 11:31:21,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-18 11:31:21,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-09-18 11:31:21,994 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 53 [2018-09-18 11:31:21,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:31:21,995 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-09-18 11:31:21,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:31:21,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-09-18 11:31:22,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-09-18 11:31:22,003 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:31:22,004 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:31:22,004 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:31:22,004 INFO L82 PathProgramCache]: Analyzing trace with hash -450811892, now seen corresponding path program 1 times [2018-09-18 11:31:22,005 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:31:22,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:22,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:22,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:22,006 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:31:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:22,286 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:31:22,286 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:31:22,286 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:31:22,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:31:22,288 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:31:22,288 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:31:22,289 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-09-18 11:31:34,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:31:34,226 INFO L93 Difference]: Finished difference Result 4038 states and 7427 transitions. [2018-09-18 11:31:34,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:31:34,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2018-09-18 11:31:34,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:31:34,246 INFO L225 Difference]: With dead ends: 4038 [2018-09-18 11:31:34,246 INFO L226 Difference]: Without dead ends: 2440 [2018-09-18 11:31:34,251 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:31:34,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2018-09-18 11:31:34,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2413. [2018-09-18 11:31:34,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2413 states. [2018-09-18 11:31:34,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 4141 transitions. [2018-09-18 11:31:34,330 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 4141 transitions. Word has length 127 [2018-09-18 11:31:34,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:31:34,330 INFO L480 AbstractCegarLoop]: Abstraction has 2413 states and 4141 transitions. [2018-09-18 11:31:34,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:31:34,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 4141 transitions. [2018-09-18 11:31:34,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-09-18 11:31:34,343 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:31:34,343 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:31:34,343 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:31:34,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1515805392, now seen corresponding path program 1 times [2018-09-18 11:31:34,344 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:31:34,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:34,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:34,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:34,345 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:31:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:34,685 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:31:34,948 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:34,948 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:31:34,949 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:31:34,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:34,966 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:31:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:35,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:31:35,153 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:35,153 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:31:35,452 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:35,491 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 11:31:35,492 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-09-18 11:31:35,492 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:31:35,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:31:35,493 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:31:35,493 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:31:35,494 INFO L87 Difference]: Start difference. First operand 2413 states and 4141 transitions. Second operand 3 states. [2018-09-18 11:31:44,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:31:44,311 INFO L93 Difference]: Finished difference Result 7156 states and 12477 transitions. [2018-09-18 11:31:44,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:31:44,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2018-09-18 11:31:44,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:31:44,346 INFO L225 Difference]: With dead ends: 7156 [2018-09-18 11:31:44,347 INFO L226 Difference]: Without dead ends: 4749 [2018-09-18 11:31:44,358 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 258 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:31:44,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4749 states. [2018-09-18 11:31:44,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4749 to 4749. [2018-09-18 11:31:44,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4749 states. [2018-09-18 11:31:44,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4749 states to 4749 states and 7195 transitions. [2018-09-18 11:31:44,500 INFO L78 Accepts]: Start accepts. Automaton has 4749 states and 7195 transitions. Word has length 129 [2018-09-18 11:31:44,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:31:44,501 INFO L480 AbstractCegarLoop]: Abstraction has 4749 states and 7195 transitions. [2018-09-18 11:31:44,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:31:44,501 INFO L276 IsEmpty]: Start isEmpty. Operand 4749 states and 7195 transitions. [2018-09-18 11:31:44,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-09-18 11:31:44,507 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:31:44,507 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:31:44,508 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:31:44,508 INFO L82 PathProgramCache]: Analyzing trace with hash 56708252, now seen corresponding path program 1 times [2018-09-18 11:31:44,508 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:31:44,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:44,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:44,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:44,511 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:31:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:44,823 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:31:45,196 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:45,197 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:31:45,197 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:31:45,197 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:31:45,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:31:45,198 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:31:45,199 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:31:45,199 INFO L87 Difference]: Start difference. First operand 4749 states and 7195 transitions. Second operand 6 states. [2018-09-18 11:31:56,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:31:56,022 INFO L93 Difference]: Finished difference Result 17482 states and 27226 transitions. [2018-09-18 11:31:56,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:31:56,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-09-18 11:31:56,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:31:56,092 INFO L225 Difference]: With dead ends: 17482 [2018-09-18 11:31:56,093 INFO L226 Difference]: Without dead ends: 12739 [2018-09-18 11:31:56,124 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:31:56,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12739 states. [2018-09-18 11:31:56,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12739 to 12652. [2018-09-18 11:31:56,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12652 states. [2018-09-18 11:31:56,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12652 states to 12652 states and 18756 transitions. [2018-09-18 11:31:56,467 INFO L78 Accepts]: Start accepts. Automaton has 12652 states and 18756 transitions. Word has length 135 [2018-09-18 11:31:56,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:31:56,468 INFO L480 AbstractCegarLoop]: Abstraction has 12652 states and 18756 transitions. [2018-09-18 11:31:56,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:31:56,468 INFO L276 IsEmpty]: Start isEmpty. Operand 12652 states and 18756 transitions. [2018-09-18 11:31:56,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-09-18 11:31:56,474 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:31:56,474 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:31:56,474 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:31:56,475 INFO L82 PathProgramCache]: Analyzing trace with hash -2138160203, now seen corresponding path program 1 times [2018-09-18 11:31:56,475 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:31:56,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:56,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:56,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:56,477 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:31:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:56,795 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:31:56,950 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:56,951 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:31:56,951 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:31:56,951 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:31:56,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:31:56,952 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:31:56,952 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:31:56,953 INFO L87 Difference]: Start difference. First operand 12652 states and 18756 transitions. Second operand 6 states. [2018-09-18 11:32:04,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:32:04,106 INFO L93 Difference]: Finished difference Result 28666 states and 43319 transitions. [2018-09-18 11:32:04,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:32:04,109 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2018-09-18 11:32:04,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:32:04,176 INFO L225 Difference]: With dead ends: 28666 [2018-09-18 11:32:04,176 INFO L226 Difference]: Without dead ends: 16020 [2018-09-18 11:32:04,218 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:32:04,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16020 states. [2018-09-18 11:32:04,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16020 to 15974. [2018-09-18 11:32:04,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15974 states. [2018-09-18 11:32:04,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15974 states to 15974 states and 22998 transitions. [2018-09-18 11:32:04,570 INFO L78 Accepts]: Start accepts. Automaton has 15974 states and 22998 transitions. Word has length 156 [2018-09-18 11:32:04,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:32:04,571 INFO L480 AbstractCegarLoop]: Abstraction has 15974 states and 22998 transitions. [2018-09-18 11:32:04,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:32:04,571 INFO L276 IsEmpty]: Start isEmpty. Operand 15974 states and 22998 transitions. [2018-09-18 11:32:04,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-09-18 11:32:04,579 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:32:04,579 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:32:04,580 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:32:04,580 INFO L82 PathProgramCache]: Analyzing trace with hash 802704968, now seen corresponding path program 1 times [2018-09-18 11:32:04,580 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:32:04,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:04,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:04,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:04,581 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:32:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:04,842 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:32:05,067 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:32:05,068 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:32:05,068 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:32:05,068 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:32:05,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:32:05,069 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:32:05,069 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:32:05,069 INFO L87 Difference]: Start difference. First operand 15974 states and 22998 transitions. Second operand 6 states. [2018-09-18 11:32:15,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:32:15,859 INFO L93 Difference]: Finished difference Result 33966 states and 49476 transitions. [2018-09-18 11:32:15,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:32:15,863 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2018-09-18 11:32:15,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:32:15,926 INFO L225 Difference]: With dead ends: 33966 [2018-09-18 11:32:15,926 INFO L226 Difference]: Without dead ends: 17998 [2018-09-18 11:32:15,962 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:32:15,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17998 states. [2018-09-18 11:32:16,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17998 to 17845. [2018-09-18 11:32:16,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17845 states. [2018-09-18 11:32:16,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17845 states to 17845 states and 24000 transitions. [2018-09-18 11:32:16,299 INFO L78 Accepts]: Start accepts. Automaton has 17845 states and 24000 transitions. Word has length 173 [2018-09-18 11:32:16,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:32:16,300 INFO L480 AbstractCegarLoop]: Abstraction has 17845 states and 24000 transitions. [2018-09-18 11:32:16,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:32:16,300 INFO L276 IsEmpty]: Start isEmpty. Operand 17845 states and 24000 transitions. [2018-09-18 11:32:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-09-18 11:32:16,310 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:32:16,316 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:32:16,317 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:32:16,317 INFO L82 PathProgramCache]: Analyzing trace with hash -349036039, now seen corresponding path program 1 times [2018-09-18 11:32:16,317 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:32:16,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:16,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:16,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:16,319 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:32:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:16,592 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:32:17,476 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 93 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-09-18 11:32:17,476 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:32:17,476 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:32:17,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:17,493 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:32:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:17,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:32:17,796 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-09-18 11:32:17,796 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:32:17,999 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-09-18 11:32:18,020 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 11:32:18,020 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [8] total 14 [2018-09-18 11:32:18,020 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:32:18,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:32:18,021 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:32:18,021 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-09-18 11:32:18,022 INFO L87 Difference]: Start difference. First operand 17845 states and 24000 transitions. Second operand 5 states. [2018-09-18 11:32:28,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:32:28,645 INFO L93 Difference]: Finished difference Result 53559 states and 74825 transitions. [2018-09-18 11:32:28,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:32:28,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2018-09-18 11:32:28,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:32:28,765 INFO L225 Difference]: With dead ends: 53559 [2018-09-18 11:32:28,766 INFO L226 Difference]: Without dead ends: 35720 [2018-09-18 11:32:28,804 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 416 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-18 11:32:28,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35720 states. [2018-09-18 11:32:29,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35720 to 35512. [2018-09-18 11:32:29,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35512 states. [2018-09-18 11:32:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35512 states to 35512 states and 45928 transitions. [2018-09-18 11:32:29,430 INFO L78 Accepts]: Start accepts. Automaton has 35512 states and 45928 transitions. Word has length 211 [2018-09-18 11:32:29,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:32:29,431 INFO L480 AbstractCegarLoop]: Abstraction has 35512 states and 45928 transitions. [2018-09-18 11:32:29,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:32:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 35512 states and 45928 transitions. [2018-09-18 11:32:29,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-09-18 11:32:29,443 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:32:29,444 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:32:29,444 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:32:29,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1582239141, now seen corresponding path program 1 times [2018-09-18 11:32:29,444 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:32:29,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:29,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:29,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:29,446 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:32:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:29,680 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 92 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:32:29,680 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:32:29,680 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:32:29,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:29,688 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:32:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:29,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:32:29,822 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-09-18 11:32:29,822 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:32:30,108 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 92 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:32:30,141 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:32:30,142 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-09-18 11:32:30,142 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:32:30,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:32:30,143 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:32:30,143 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:32:30,144 INFO L87 Difference]: Start difference. First operand 35512 states and 45928 transitions. Second operand 5 states. [2018-09-18 11:32:41,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:32:41,263 INFO L93 Difference]: Finished difference Result 108428 states and 148840 transitions. [2018-09-18 11:32:41,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:32:41,270 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2018-09-18 11:32:41,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:32:41,503 INFO L225 Difference]: With dead ends: 108428 [2018-09-18 11:32:41,503 INFO L226 Difference]: Without dead ends: 72922 [2018-09-18 11:32:41,595 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 496 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:32:41,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72922 states. [2018-09-18 11:32:43,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72922 to 71949. [2018-09-18 11:32:43,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71949 states. [2018-09-18 11:32:43,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71949 states to 71949 states and 91971 transitions. [2018-09-18 11:32:43,244 INFO L78 Accepts]: Start accepts. Automaton has 71949 states and 91971 transitions. Word has length 249 [2018-09-18 11:32:43,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:32:43,245 INFO L480 AbstractCegarLoop]: Abstraction has 71949 states and 91971 transitions. [2018-09-18 11:32:43,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:32:43,245 INFO L276 IsEmpty]: Start isEmpty. Operand 71949 states and 91971 transitions. [2018-09-18 11:32:43,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-09-18 11:32:43,256 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:32:43,257 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:32:43,257 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:32:43,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1930999894, now seen corresponding path program 1 times [2018-09-18 11:32:43,257 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:32:43,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:43,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:43,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:43,259 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:32:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:43,533 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-18 11:32:43,534 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:32:43,534 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:32:43,534 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:32:43,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:32:43,535 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:32:43,535 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:32:43,535 INFO L87 Difference]: Start difference. First operand 71949 states and 91971 transitions. Second operand 4 states. [2018-09-18 11:32:53,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:32:53,936 INFO L93 Difference]: Finished difference Result 171281 states and 227457 transitions. [2018-09-18 11:32:53,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:32:53,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 276 [2018-09-18 11:32:53,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:32:54,263 INFO L225 Difference]: With dead ends: 171281 [2018-09-18 11:32:54,264 INFO L226 Difference]: Without dead ends: 99338 [2018-09-18 11:32:54,402 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:32:54,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99338 states. [2018-09-18 11:32:55,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99338 to 99279. [2018-09-18 11:32:55,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99279 states. [2018-09-18 11:32:56,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99279 states to 99279 states and 125533 transitions. [2018-09-18 11:32:56,094 INFO L78 Accepts]: Start accepts. Automaton has 99279 states and 125533 transitions. Word has length 276 [2018-09-18 11:32:56,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:32:56,095 INFO L480 AbstractCegarLoop]: Abstraction has 99279 states and 125533 transitions. [2018-09-18 11:32:56,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:32:56,095 INFO L276 IsEmpty]: Start isEmpty. Operand 99279 states and 125533 transitions. [2018-09-18 11:32:56,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-09-18 11:32:56,116 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:32:56,116 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:32:56,117 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:32:56,117 INFO L82 PathProgramCache]: Analyzing trace with hash 2114558797, now seen corresponding path program 1 times [2018-09-18 11:32:56,117 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:32:56,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:56,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:56,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:56,118 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:32:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:56,418 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:32:56,418 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:32:56,419 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:32:56,419 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:32:56,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:32:56,420 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:32:56,420 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:32:56,420 INFO L87 Difference]: Start difference. First operand 99279 states and 125533 transitions. Second operand 4 states. [2018-09-18 11:33:09,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:33:09,428 INFO L93 Difference]: Finished difference Result 235072 states and 306144 transitions. [2018-09-18 11:33:09,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:33:09,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2018-09-18 11:33:09,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:33:09,783 INFO L225 Difference]: With dead ends: 235072 [2018-09-18 11:33:09,784 INFO L226 Difference]: Without dead ends: 135799 [2018-09-18 11:33:09,953 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:33:10,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135799 states. [2018-09-18 11:33:12,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135799 to 135734. [2018-09-18 11:33:12,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135734 states. [2018-09-18 11:33:13,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135734 states to 135734 states and 172610 transitions. [2018-09-18 11:33:13,272 INFO L78 Accepts]: Start accepts. Automaton has 135734 states and 172610 transitions. Word has length 328 [2018-09-18 11:33:13,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:33:13,273 INFO L480 AbstractCegarLoop]: Abstraction has 135734 states and 172610 transitions. [2018-09-18 11:33:13,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:33:13,273 INFO L276 IsEmpty]: Start isEmpty. Operand 135734 states and 172610 transitions. [2018-09-18 11:33:13,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-09-18 11:33:13,317 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:33:13,318 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:33:13,318 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:33:13,318 INFO L82 PathProgramCache]: Analyzing trace with hash -2027700998, now seen corresponding path program 1 times [2018-09-18 11:33:13,318 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:33:13,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:33:13,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:33:13,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:33:13,320 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:33:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:33:14,325 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 9 proven. 86 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-09-18 11:33:14,325 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:33:14,325 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 [2018-09-18 11:33:14,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:33:14,340 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:33:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:33:14,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:33:14,880 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-09-18 11:33:14,881 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:33:15,082 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2018-09-18 11:33:17,274 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 92 proven. 144 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:33:17,295 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:33:17,295 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-09-18 11:33:17,296 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:33:17,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:33:17,296 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:33:17,297 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:33:17,297 INFO L87 Difference]: Start difference. First operand 135734 states and 172610 transitions. Second operand 5 states. [2018-09-18 11:33:28,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:33:28,257 INFO L93 Difference]: Finished difference Result 288972 states and 368653 transitions. [2018-09-18 11:33:28,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-18 11:33:28,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 380 [2018-09-18 11:33:28,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:33:30,105 INFO L225 Difference]: With dead ends: 288972 [2018-09-18 11:33:30,105 INFO L226 Difference]: Without dead ends: 150916 [2018-09-18 11:33:30,265 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 758 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-09-18 11:33:30,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150916 states. [2018-09-18 11:33:32,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150916 to 149609. [2018-09-18 11:33:32,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149609 states. [2018-09-18 11:33:34,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149609 states to 149609 states and 188555 transitions. [2018-09-18 11:33:34,039 INFO L78 Accepts]: Start accepts. Automaton has 149609 states and 188555 transitions. Word has length 380 [2018-09-18 11:33:34,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:33:34,040 INFO L480 AbstractCegarLoop]: Abstraction has 149609 states and 188555 transitions. [2018-09-18 11:33:34,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:33:34,040 INFO L276 IsEmpty]: Start isEmpty. Operand 149609 states and 188555 transitions. [2018-09-18 11:33:34,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-09-18 11:33:34,068 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:33:34,068 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:33:34,068 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:33:34,068 INFO L82 PathProgramCache]: Analyzing trace with hash 760976397, now seen corresponding path program 1 times [2018-09-18 11:33:34,069 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:33:34,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:33:34,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:33:34,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:33:34,069 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:33:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:33:34,424 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 217 proven. 124 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-18 11:33:34,424 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:33:34,424 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:33:34,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:33:34,433 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:33:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:33:34,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:33:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 366 proven. 2 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-09-18 11:33:34,694 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:33:34,906 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 217 proven. 124 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-18 11:33:34,929 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:33:34,929 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:33:34,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:33:34,957 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:33:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:33:35,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:33:35,560 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 366 proven. 2 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-09-18 11:33:35,561 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:33:35,766 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 11:33:37,633 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 217 proven. 124 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-18 11:33:37,635 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:33:37,636 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:33:37,636 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:33:37,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:33:37,637 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:33:37,637 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:33:37,638 INFO L87 Difference]: Start difference. First operand 149609 states and 188555 transitions. Second operand 9 states. [2018-09-18 11:33:59,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:33:59,590 INFO L93 Difference]: Finished difference Result 305425 states and 429727 transitions. [2018-09-18 11:33:59,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-18 11:33:59,590 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 432 [2018-09-18 11:33:59,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:34:00,172 INFO L225 Difference]: With dead ends: 305425 [2018-09-18 11:34:00,172 INFO L226 Difference]: Without dead ends: 140962 [2018-09-18 11:34:00,464 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1754 GetRequests, 1729 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-09-18 11:34:00,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140962 states. [2018-09-18 11:34:02,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140962 to 138555. [2018-09-18 11:34:02,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138555 states. [2018-09-18 11:34:03,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138555 states to 138555 states and 179464 transitions. [2018-09-18 11:34:03,379 INFO L78 Accepts]: Start accepts. Automaton has 138555 states and 179464 transitions. Word has length 432 [2018-09-18 11:34:03,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:34:03,379 INFO L480 AbstractCegarLoop]: Abstraction has 138555 states and 179464 transitions. [2018-09-18 11:34:03,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:34:03,379 INFO L276 IsEmpty]: Start isEmpty. Operand 138555 states and 179464 transitions. [2018-09-18 11:34:03,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2018-09-18 11:34:03,425 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:34:03,426 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:34:03,426 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:34:03,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1453926586, now seen corresponding path program 1 times [2018-09-18 11:34:03,427 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:34:03,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:34:03,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:34:03,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:34:03,428 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:34:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:34:05,104 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 14 proven. 130 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2018-09-18 11:34:05,104 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:34:05,104 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:34:05,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:34:05,116 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:34:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:34:05,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:34:08,556 WARN L178 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2018-09-18 11:34:08,771 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 14 proven. 130 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2018-09-18 11:34:08,771 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:34:09,053 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2018-09-18 11:34:09,074 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:34:09,075 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 9 [2018-09-18 11:34:09,075 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:34:09,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:34:09,075 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:34:09,076 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=48, Unknown=1, NotChecked=0, Total=72 [2018-09-18 11:34:09,076 INFO L87 Difference]: Start difference. First operand 138555 states and 179464 transitions. Second operand 3 states. [2018-09-18 11:34:18,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:34:18,135 INFO L93 Difference]: Finished difference Result 290152 states and 384178 transitions. [2018-09-18 11:34:18,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:34:18,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 503 [2018-09-18 11:34:18,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:34:18,580 INFO L225 Difference]: With dead ends: 290152 [2018-09-18 11:34:18,581 INFO L226 Difference]: Without dead ends: 152371 [2018-09-18 11:34:18,865 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1018 GetRequests, 1007 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=23, Invalid=48, Unknown=1, NotChecked=0, Total=72 [2018-09-18 11:34:18,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152371 states. [2018-09-18 11:34:21,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152371 to 146943. [2018-09-18 11:34:21,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146943 states. [2018-09-18 11:34:22,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146943 states to 146943 states and 189489 transitions. [2018-09-18 11:34:22,416 INFO L78 Accepts]: Start accepts. Automaton has 146943 states and 189489 transitions. Word has length 503 [2018-09-18 11:34:22,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:34:22,417 INFO L480 AbstractCegarLoop]: Abstraction has 146943 states and 189489 transitions. [2018-09-18 11:34:22,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:34:22,417 INFO L276 IsEmpty]: Start isEmpty. Operand 146943 states and 189489 transitions. [2018-09-18 11:34:22,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1065 [2018-09-18 11:34:22,737 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:34:22,738 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:34:22,739 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:34:22,739 INFO L82 PathProgramCache]: Analyzing trace with hash -341908178, now seen corresponding path program 1 times [2018-09-18 11:34:22,739 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:34:22,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:34:22,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:34:22,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:34:22,740 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:34:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:34:24,367 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 409 proven. 106 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2018-09-18 11:34:24,367 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:34:24,367 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 [2018-09-18 11:34:24,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:34:24,375 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:34:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:34:24,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:34:25,106 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 727 proven. 2 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2018-09-18 11:34:25,107 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:34:26,087 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 409 proven. 106 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2018-09-18 11:34:26,107 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:34:26,108 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 [2018-09-18 11:34:26,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:34:26,123 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:34:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:34:26,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:34:27,745 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 187 proven. 6 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2018-09-18 11:34:27,745 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:34:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2018-09-18 11:34:29,617 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-18 11:34:29,618 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 13 [2018-09-18 11:34:29,618 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:34:29,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:34:29,619 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:34:29,619 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2018-09-18 11:34:29,620 INFO L87 Difference]: Start difference. First operand 146943 states and 189489 transitions. Second operand 5 states. [2018-09-18 11:34:38,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:34:38,799 INFO L93 Difference]: Finished difference Result 293725 states and 380089 transitions. [2018-09-18 11:34:38,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:34:38,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1064 [2018-09-18 11:34:38,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:34:39,254 INFO L225 Difference]: With dead ends: 293725 [2018-09-18 11:34:39,254 INFO L226 Difference]: Without dead ends: 147556 [2018-09-18 11:34:39,558 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4261 GetRequests, 4246 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-09-18 11:34:39,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147556 states. [2018-09-18 11:34:42,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147556 to 145917. [2018-09-18 11:34:42,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145917 states. Received shutdown request... [2018-09-18 11:34:42,268 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:34:42,273 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:34:42,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:34:42 BoogieIcfgContainer [2018-09-18 11:34:42,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:34:42,275 INFO L168 Benchmark]: Toolchain (without parser) took 223390.49 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -519.4 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-09-18 11:34:42,276 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 11:34:42,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2142.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-18 11:34:42,278 INFO L168 Benchmark]: Boogie Procedure Inliner took 263.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-18 11:34:42,279 INFO L168 Benchmark]: Boogie Preprocessor took 869.35 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 915.9 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-09-18 11:34:42,280 INFO L168 Benchmark]: RCFGBuilder took 10422.75 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 659.5 MB). Peak memory consumption was 659.5 MB. Max. memory is 7.1 GB. [2018-09-18 11:34:42,280 INFO L168 Benchmark]: TraceAbstraction took 209685.15 ms. Allocated memory was 2.4 GB in the beginning and 4.7 GB in the end (delta: 2.3 GB). Free memory was 1.6 GB in the beginning and 1.9 GB in the end (delta: -267.2 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-09-18 11:34:42,295 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2142.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 263.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 869.35 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 915.9 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10422.75 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 659.5 MB). Peak memory consumption was 659.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209685.15 ms. Allocated memory was 2.4 GB in the beginning and 4.7 GB in the end (delta: 2.3 GB). Free memory was 1.6 GB in the beginning and 1.9 GB in the end (delta: -267.2 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 150). Cancelled while ReachableStatesComputation was computing reachable states (83979 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 209.6s OverallTime, 14 OverallIterations, 5 TraceHistogramMax, 160.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6849 SDtfs, 35846 SDslu, 2188 SDs, 0 SdLazy, 66730 SolverSat, 14604 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 118.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9067 GetRequests, 8926 SyntacticMatches, 26 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 10.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=149609occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 21.6s AutomataMinimizationTime, 14 MinimizatonAttempts, 10760 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 21.5s InterpolantComputationTime, 8680 NumberOfCodeBlocks, 8680 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 13112 ConstructedInterpolants, 2 QuantifiedInterpolants, 26977350 SizeOfPredicates, 14 NumberOfNonLiveVariables, 6748 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 32 InterpolantComputations, 15 PerfectInterpolantSequences, 9139/10385 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label24_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-34-42-317.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label24_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-34-42-317.csv Completed graceful shutdown