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/Problem13_label31_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:41:34,749 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:41:34,751 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:41:34,774 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:41:34,775 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:41:34,776 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:41:34,777 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:41:34,786 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:41:34,789 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:41:34,793 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:41:34,794 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:41:34,794 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:41:34,795 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:41:34,796 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:41:34,797 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:41:34,798 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:41:34,799 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:41:34,801 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:41:34,803 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:41:34,804 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:41:34,806 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:41:34,807 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:41:34,810 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-18 11:41:34,816 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:41:34,817 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:41:34,818 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:41:34,818 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:41:34,819 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 11:41:34,850 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:41:34,851 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:41:34,852 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:41:34,852 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:41:34,852 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:41:34,853 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:41:34,853 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:41:34,853 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:41:34,853 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:41:34,854 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:41:34,854 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:41:34,854 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:41:34,855 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:41:34,855 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:41:34,855 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:41:34,856 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:41:34,856 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:41:34,856 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:41:34,856 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:41:34,858 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:41:34,858 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:41:34,858 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:41:34,859 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:41:34,859 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:41:34,859 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:41:34,859 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:41:34,859 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:41:34,860 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:41:34,860 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:41:34,860 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:41:34,860 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:41:34,860 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:41:34,861 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:41:34,861 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:41:34,935 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:41:34,950 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:41:34,957 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:41:34,959 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:41:34,959 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:41:34,960 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label31_true-unreach-call.c [2018-09-18 11:41:35,316 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efa038599/c415dc3aa77e485fbb7a931af61d0cba/FLAG3d43d9973 [2018-09-18 11:41:35,821 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:41:35,822 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label31_true-unreach-call.c [2018-09-18 11:41:35,868 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efa038599/c415dc3aa77e485fbb7a931af61d0cba/FLAG3d43d9973 [2018-09-18 11:41:35,891 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efa038599/c415dc3aa77e485fbb7a931af61d0cba [2018-09-18 11:41:35,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:41:35,909 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:41:35,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:41:35,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:41:35,921 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:41:35,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:41:35" (1/1) ... [2018-09-18 11:41:35,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e2a0e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:35, skipping insertion in model container [2018-09-18 11:41:35,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:41:35" (1/1) ... [2018-09-18 11:41:35,941 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:41:37,449 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:41:37,469 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:41:38,150 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:41:38,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:38 WrapperNode [2018-09-18 11:41:38,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:41:38,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:41:38,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:41:38,547 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:41:38,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:38" (1/1) ... [2018-09-18 11:41:38,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:38" (1/1) ... [2018-09-18 11:41:39,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:41:39,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:41:39,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:41:39,621 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:41:39,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:38" (1/1) ... [2018-09-18 11:41:39,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:38" (1/1) ... [2018-09-18 11:41:39,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:38" (1/1) ... [2018-09-18 11:41:39,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:38" (1/1) ... [2018-09-18 11:41:39,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:38" (1/1) ... [2018-09-18 11:41:39,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:38" (1/1) ... [2018-09-18 11:41:40,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:38" (1/1) ... [2018-09-18 11:41:40,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:41:40,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:41:40,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:41:40,083 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:41:40,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:38" (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 11:41:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:41:40,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:41:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 11:41:40,157 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 11:41:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 11:41:40,157 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 11:41:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 11:41:40,157 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 11:41:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:41:40,158 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:41:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:41:40,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:41:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:41:40,159 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:41:50,985 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:41:50,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:41:50 BoogieIcfgContainer [2018-09-18 11:41:50,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:41:50,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:41:50,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:41:50,990 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:41:50,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:41:35" (1/3) ... [2018-09-18 11:41:50,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e106890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:41:50, skipping insertion in model container [2018-09-18 11:41:50,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:38" (2/3) ... [2018-09-18 11:41:50,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e106890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:41:50, skipping insertion in model container [2018-09-18 11:41:50,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:41:50" (3/3) ... [2018-09-18 11:41:50,994 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label31_true-unreach-call.c [2018-09-18 11:41:51,005 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:41:51,015 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:41:51,093 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:41:51,094 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:41:51,094 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:41:51,094 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:41:51,094 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:41:51,096 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:41:51,096 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:41:51,096 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:41:51,096 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:41:51,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-18 11:41:51,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-09-18 11:41:51,163 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:41:51,164 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] [2018-09-18 11:41:51,165 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:41:51,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1693652115, now seen corresponding path program 1 times [2018-09-18 11:41:51,174 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:41:51,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:41:51,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:41:51,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:41:51,226 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:41:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:41:51,638 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:41:51,751 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 11:41:51,753 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:41:51,756 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:41:51,756 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:41:51,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:41:51,779 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:41:51,779 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:41:51,782 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-09-18 11:42:01,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:42:01,767 INFO L93 Difference]: Finished difference Result 3093 states and 5715 transitions. [2018-09-18 11:42:01,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:42:01,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-09-18 11:42:01,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:42:01,803 INFO L225 Difference]: With dead ends: 3093 [2018-09-18 11:42:01,804 INFO L226 Difference]: Without dead ends: 1971 [2018-09-18 11:42:01,815 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:42:01,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2018-09-18 11:42:01,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1957. [2018-09-18 11:42:01,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2018-09-18 11:42:01,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3535 transitions. [2018-09-18 11:42:01,993 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3535 transitions. Word has length 47 [2018-09-18 11:42:01,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:42:01,994 INFO L480 AbstractCegarLoop]: Abstraction has 1957 states and 3535 transitions. [2018-09-18 11:42:01,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:42:01,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3535 transitions. [2018-09-18 11:42:02,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-18 11:42:02,002 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:42:02,003 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:02,003 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:42:02,003 INFO L82 PathProgramCache]: Analyzing trace with hash 459936076, now seen corresponding path program 1 times [2018-09-18 11:42:02,004 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:42:02,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:02,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:02,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:02,005 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:42:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:02,440 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:42:02,440 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:42:02,440 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:42:02,440 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:42:02,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:42:02,443 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:42:02,443 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:42:02,443 INFO L87 Difference]: Start difference. First operand 1957 states and 3535 transitions. Second operand 6 states. [2018-09-18 11:42:17,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:42:17,629 INFO L93 Difference]: Finished difference Result 5627 states and 10356 transitions. [2018-09-18 11:42:17,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:42:17,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-09-18 11:42:17,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:42:17,653 INFO L225 Difference]: With dead ends: 5627 [2018-09-18 11:42:17,654 INFO L226 Difference]: Without dead ends: 3676 [2018-09-18 11:42:17,661 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:42:17,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2018-09-18 11:42:17,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3643. [2018-09-18 11:42:17,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3643 states. [2018-09-18 11:42:17,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 5987 transitions. [2018-09-18 11:42:17,767 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 5987 transitions. Word has length 130 [2018-09-18 11:42:17,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:42:17,768 INFO L480 AbstractCegarLoop]: Abstraction has 3643 states and 5987 transitions. [2018-09-18 11:42:17,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:42:17,768 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 5987 transitions. [2018-09-18 11:42:17,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-18 11:42:17,773 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:42:17,774 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:17,774 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:42:17,774 INFO L82 PathProgramCache]: Analyzing trace with hash -923575044, now seen corresponding path program 1 times [2018-09-18 11:42:17,775 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:42:17,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:17,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:17,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:17,776 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:42:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:18,021 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:42:18,021 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:42:18,021 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:42:18,022 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:42:18,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:42:18,022 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:42:18,023 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:42:18,023 INFO L87 Difference]: Start difference. First operand 3643 states and 5987 transitions. Second operand 5 states. [2018-09-18 11:42:35,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:42:35,770 INFO L93 Difference]: Finished difference Result 10957 states and 18516 transitions. [2018-09-18 11:42:35,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:42:35,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-09-18 11:42:35,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:42:35,817 INFO L225 Difference]: With dead ends: 10957 [2018-09-18 11:42:35,819 INFO L226 Difference]: Without dead ends: 7320 [2018-09-18 11:42:35,832 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:42:35,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7320 states. [2018-09-18 11:42:36,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7320 to 7131. [2018-09-18 11:42:36,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7131 states. [2018-09-18 11:42:36,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7131 states to 7131 states and 10923 transitions. [2018-09-18 11:42:36,030 INFO L78 Accepts]: Start accepts. Automaton has 7131 states and 10923 transitions. Word has length 146 [2018-09-18 11:42:36,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:42:36,030 INFO L480 AbstractCegarLoop]: Abstraction has 7131 states and 10923 transitions. [2018-09-18 11:42:36,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:42:36,031 INFO L276 IsEmpty]: Start isEmpty. Operand 7131 states and 10923 transitions. [2018-09-18 11:42:36,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-09-18 11:42:36,036 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:42:36,036 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:36,036 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:42:36,037 INFO L82 PathProgramCache]: Analyzing trace with hash -616934008, now seen corresponding path program 1 times [2018-09-18 11:42:36,037 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:42:36,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:36,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:36,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:36,038 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:42:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:36,373 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:42:36,572 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:42:36,573 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:42:36,573 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:42:36,573 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:42:36,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:42:36,574 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:42:36,574 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:42:36,574 INFO L87 Difference]: Start difference. First operand 7131 states and 10923 transitions. Second operand 6 states. [2018-09-18 11:42:48,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:42:48,066 INFO L93 Difference]: Finished difference Result 19766 states and 31245 transitions. [2018-09-18 11:42:48,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:42:48,068 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2018-09-18 11:42:48,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:42:48,131 INFO L225 Difference]: With dead ends: 19766 [2018-09-18 11:42:48,131 INFO L226 Difference]: Without dead ends: 12641 [2018-09-18 11:42:48,176 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 11:42:48,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12641 states. [2018-09-18 11:42:48,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12641 to 12439. [2018-09-18 11:42:48,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12439 states. [2018-09-18 11:42:48,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12439 states to 12439 states and 18019 transitions. [2018-09-18 11:42:48,500 INFO L78 Accepts]: Start accepts. Automaton has 12439 states and 18019 transitions. Word has length 183 [2018-09-18 11:42:48,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:42:48,500 INFO L480 AbstractCegarLoop]: Abstraction has 12439 states and 18019 transitions. [2018-09-18 11:42:48,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:42:48,501 INFO L276 IsEmpty]: Start isEmpty. Operand 12439 states and 18019 transitions. [2018-09-18 11:42:48,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-09-18 11:42:48,506 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:42:48,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:48,507 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:42:48,507 INFO L82 PathProgramCache]: Analyzing trace with hash -566668791, now seen corresponding path program 1 times [2018-09-18 11:42:48,508 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:42:48,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:48,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:48,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:48,509 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:42:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:42:49,075 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:42:49,076 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:42:49,076 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:42:49,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:42:49,077 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:42:49,077 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:42:49,077 INFO L87 Difference]: Start difference. First operand 12439 states and 18019 transitions. Second operand 6 states. [2018-09-18 11:43:08,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:43:08,594 INFO L93 Difference]: Finished difference Result 42949 states and 69054 transitions. [2018-09-18 11:43:08,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-18 11:43:08,599 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 205 [2018-09-18 11:43:08,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:43:08,782 INFO L225 Difference]: With dead ends: 42949 [2018-09-18 11:43:08,782 INFO L226 Difference]: Without dead ends: 30516 [2018-09-18 11:43:08,859 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:43:08,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30516 states. [2018-09-18 11:43:09,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30516 to 30278. [2018-09-18 11:43:09,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30278 states. [2018-09-18 11:43:09,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30278 states to 30278 states and 43651 transitions. [2018-09-18 11:43:09,675 INFO L78 Accepts]: Start accepts. Automaton has 30278 states and 43651 transitions. Word has length 205 [2018-09-18 11:43:09,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:43:09,675 INFO L480 AbstractCegarLoop]: Abstraction has 30278 states and 43651 transitions. [2018-09-18 11:43:09,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:43:09,676 INFO L276 IsEmpty]: Start isEmpty. Operand 30278 states and 43651 transitions. [2018-09-18 11:43:09,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-09-18 11:43:09,691 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:43:09,692 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:43:09,692 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:43:09,692 INFO L82 PathProgramCache]: Analyzing trace with hash -620261943, now seen corresponding path program 1 times [2018-09-18 11:43:09,692 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:43:09,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:09,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:09,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:09,694 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:43:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:10,275 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:43:10,275 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:43:10,276 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 11:43:10,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:10,301 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:43:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:10,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:43:10,974 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-09-18 11:43:10,974 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:43:11,335 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-18 11:43:11,367 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:43:11,367 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 8 [2018-09-18 11:43:11,368 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:43:11,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:43:11,369 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:43:11,369 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:43:11,369 INFO L87 Difference]: Start difference. First operand 30278 states and 43651 transitions. Second operand 3 states. [2018-09-18 11:43:23,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:43:23,097 INFO L93 Difference]: Finished difference Result 64609 states and 97159 transitions. [2018-09-18 11:43:23,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:43:23,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 251 [2018-09-18 11:43:23,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:43:23,303 INFO L225 Difference]: With dead ends: 64609 [2018-09-18 11:43:23,303 INFO L226 Difference]: Without dead ends: 40053 [2018-09-18 11:43:23,372 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:43:23,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40053 states. [2018-09-18 11:43:24,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40053 to 40053. [2018-09-18 11:43:24,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40053 states. [2018-09-18 11:43:25,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40053 states to 40053 states and 56850 transitions. [2018-09-18 11:43:25,013 INFO L78 Accepts]: Start accepts. Automaton has 40053 states and 56850 transitions. Word has length 251 [2018-09-18 11:43:25,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:43:25,014 INFO L480 AbstractCegarLoop]: Abstraction has 40053 states and 56850 transitions. [2018-09-18 11:43:25,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:43:25,014 INFO L276 IsEmpty]: Start isEmpty. Operand 40053 states and 56850 transitions. [2018-09-18 11:43:25,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-09-18 11:43:25,032 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:43:25,033 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:43:25,033 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:43:25,033 INFO L82 PathProgramCache]: Analyzing trace with hash -835857679, now seen corresponding path program 1 times [2018-09-18 11:43:25,033 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:43:25,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:25,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:25,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:25,045 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:43:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:25,455 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 80 proven. 94 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:43:25,455 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:43:25,455 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 11:43:25,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:25,466 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:43:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:25,566 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:43:26,049 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-09-18 11:43:26,049 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:43:26,333 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 80 proven. 94 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:43:26,365 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:43:26,365 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2018-09-18 11:43:26,365 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:43:26,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:43:26,366 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:43:26,366 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:43:26,366 INFO L87 Difference]: Start difference. First operand 40053 states and 56850 transitions. Second operand 5 states. [2018-09-18 11:43:39,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:43:39,587 INFO L93 Difference]: Finished difference Result 97021 states and 148152 transitions. [2018-09-18 11:43:39,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:43:39,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 252 [2018-09-18 11:43:39,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:43:39,820 INFO L225 Difference]: With dead ends: 97021 [2018-09-18 11:43:39,821 INFO L226 Difference]: Without dead ends: 56974 [2018-09-18 11:43:39,927 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 499 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:43:39,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56974 states. [2018-09-18 11:43:40,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56974 to 56558. [2018-09-18 11:43:40,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56558 states. [2018-09-18 11:43:41,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56558 states to 56558 states and 82321 transitions. [2018-09-18 11:43:41,180 INFO L78 Accepts]: Start accepts. Automaton has 56558 states and 82321 transitions. Word has length 252 [2018-09-18 11:43:41,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:43:41,180 INFO L480 AbstractCegarLoop]: Abstraction has 56558 states and 82321 transitions. [2018-09-18 11:43:41,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:43:41,180 INFO L276 IsEmpty]: Start isEmpty. Operand 56558 states and 82321 transitions. [2018-09-18 11:43:41,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-09-18 11:43:41,191 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:43:41,192 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:43:41,192 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:43:41,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1920075969, now seen corresponding path program 1 times [2018-09-18 11:43:41,192 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:43:41,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:41,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:41,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:41,194 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:43:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:42,335 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 157 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:43:42,336 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:43:42,336 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 11:43:42,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:42,345 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:43:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:42,426 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:43:42,672 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-18 11:43:42,673 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:43:42,822 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-18 11:43:42,844 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 11:43:42,844 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2018-09-18 11:43:42,844 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:43:42,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:43:42,845 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:43:42,845 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:43:42,845 INFO L87 Difference]: Start difference. First operand 56558 states and 82321 transitions. Second operand 3 states. [2018-09-18 11:43:52,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:43:52,496 INFO L93 Difference]: Finished difference Result 122009 states and 178959 transitions. [2018-09-18 11:43:52,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:43:52,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 258 [2018-09-18 11:43:52,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:43:52,720 INFO L225 Difference]: With dead ends: 122009 [2018-09-18 11:43:52,721 INFO L226 Difference]: Without dead ends: 65457 [2018-09-18 11:43:52,879 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 515 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:43:52,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65457 states. [2018-09-18 11:43:53,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65457 to 62213. [2018-09-18 11:43:53,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62213 states. [2018-09-18 11:43:54,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62213 states to 62213 states and 84002 transitions. [2018-09-18 11:43:54,056 INFO L78 Accepts]: Start accepts. Automaton has 62213 states and 84002 transitions. Word has length 258 [2018-09-18 11:43:54,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:43:54,056 INFO L480 AbstractCegarLoop]: Abstraction has 62213 states and 84002 transitions. [2018-09-18 11:43:54,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:43:54,057 INFO L276 IsEmpty]: Start isEmpty. Operand 62213 states and 84002 transitions. [2018-09-18 11:43:54,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-09-18 11:43:54,089 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:43:54,090 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:43:54,090 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:43:54,090 INFO L82 PathProgramCache]: Analyzing trace with hash 470504346, now seen corresponding path program 1 times [2018-09-18 11:43:54,090 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:43:54,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:54,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:54,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:54,092 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:43:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 202 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-18 11:43:55,506 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:43:55,507 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 11:43:55,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:55,524 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:43:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:55,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:43:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-09-18 11:43:56,009 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:43:56,164 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 202 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-18 11:43:56,184 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:43:56,185 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:43:56,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:56,206 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:43:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:56,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:43:56,566 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-09-18 11:43:56,566 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:43:56,956 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 202 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-18 11:43:56,959 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:43:56,960 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:43:56,960 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:43:56,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:43:56,961 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:43:56,961 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:43:56,961 INFO L87 Difference]: Start difference. First operand 62213 states and 84002 transitions. Second operand 9 states. [2018-09-18 11:44:19,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:44:19,898 INFO L93 Difference]: Finished difference Result 149122 states and 236335 transitions. [2018-09-18 11:44:19,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-18 11:44:19,899 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 330 [2018-09-18 11:44:19,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:44:20,268 INFO L225 Difference]: With dead ends: 149122 [2018-09-18 11:44:20,269 INFO L226 Difference]: Without dead ends: 86915 [2018-09-18 11:44:20,436 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1342 GetRequests, 1318 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-18 11:44:20,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86915 states. [2018-09-18 11:44:22,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86915 to 86501. [2018-09-18 11:44:22,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86501 states. [2018-09-18 11:44:23,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86501 states to 86501 states and 131340 transitions. [2018-09-18 11:44:23,328 INFO L78 Accepts]: Start accepts. Automaton has 86501 states and 131340 transitions. Word has length 330 [2018-09-18 11:44:23,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:44:23,329 INFO L480 AbstractCegarLoop]: Abstraction has 86501 states and 131340 transitions. [2018-09-18 11:44:23,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:44:23,329 INFO L276 IsEmpty]: Start isEmpty. Operand 86501 states and 131340 transitions. [2018-09-18 11:44:23,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-09-18 11:44:23,358 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:44:23,359 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:44:23,359 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:44:23,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1988929760, now seen corresponding path program 1 times [2018-09-18 11:44:23,359 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:44:23,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:44:23,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:44:23,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:44:23,361 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:44:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:44:23,964 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-18 11:44:23,965 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:44:23,965 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-09-18 11:44:23,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:44:23,976 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:44:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:44:24,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:44:24,583 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-18 11:44:24,584 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:44:24,730 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-18 11:44:24,751 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:44:24,751 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:44:24,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:44:24,767 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:44:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:44:24,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:44:25,316 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-18 11:44:25,316 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:44:25,540 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-18 11:44:25,542 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:44:25,542 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-18 11:44:25,543 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:44:25,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:44:25,544 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:44:25,544 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-18 11:44:25,544 INFO L87 Difference]: Start difference. First operand 86501 states and 131340 transitions. Second operand 9 states. [2018-09-18 11:44:26,566 WARN L178 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-18 11:44:56,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:44:56,447 INFO L93 Difference]: Finished difference Result 274765 states and 480251 transitions. [2018-09-18 11:44:56,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-18 11:44:56,447 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 341 [2018-09-18 11:44:56,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:44:57,116 INFO L225 Difference]: With dead ends: 274765 [2018-09-18 11:44:57,116 INFO L226 Difference]: Without dead ends: 187179 [2018-09-18 11:44:57,458 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1426 GetRequests, 1382 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=380, Invalid=1512, Unknown=0, NotChecked=0, Total=1892 [2018-09-18 11:44:57,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187179 states. [2018-09-18 11:45:01,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187179 to 185290. [2018-09-18 11:45:01,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185290 states. [2018-09-18 11:45:01,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185290 states to 185290 states and 236043 transitions. [2018-09-18 11:45:01,635 INFO L78 Accepts]: Start accepts. Automaton has 185290 states and 236043 transitions. Word has length 341 [2018-09-18 11:45:01,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:45:01,636 INFO L480 AbstractCegarLoop]: Abstraction has 185290 states and 236043 transitions. [2018-09-18 11:45:01,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:45:01,636 INFO L276 IsEmpty]: Start isEmpty. Operand 185290 states and 236043 transitions. [2018-09-18 11:45:01,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-09-18 11:45:01,690 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:45:01,691 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:45:01,691 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:45:01,691 INFO L82 PathProgramCache]: Analyzing trace with hash 619095938, now seen corresponding path program 1 times [2018-09-18 11:45:01,692 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:45:01,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:45:01,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:45:01,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:45:01,693 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:45:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:45:02,368 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:45:02,369 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:45:02,369 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 11:45:02,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:45:02,377 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:45:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:45:02,495 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:45:03,915 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:45:03,915 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:45:04,159 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:45:04,180 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:45:04,181 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 11:45:04,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:45:04,198 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:45:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:45:04,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:45:04,600 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:45:04,600 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:45:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:45:04,946 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:45:04,946 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 11:45:04,946 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:45:04,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:45:04,947 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:45:04,947 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:45:04,948 INFO L87 Difference]: Start difference. First operand 185290 states and 236043 transitions. Second operand 9 states. Received shutdown request... [2018-09-18 11:45:23,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-18 11:45:23,985 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:45:23,991 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:45:23,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:45:23 BoogieIcfgContainer [2018-09-18 11:45:23,992 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:45:23,992 INFO L168 Benchmark]: Toolchain (without parser) took 228086.14 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 844.7 MB. Max. memory is 7.1 GB. [2018-09-18 11:45:23,993 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 11:45:23,994 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2635.58 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: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. [2018-09-18 11:45:23,995 INFO L168 Benchmark]: Boogie Procedure Inliner took 1073.73 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.1 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 190.2 MB. Max. memory is 7.1 GB. [2018-09-18 11:45:23,996 INFO L168 Benchmark]: Boogie Preprocessor took 461.82 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 70.1 MB). Peak memory consumption was 70.1 MB. Max. memory is 7.1 GB. [2018-09-18 11:45:23,996 INFO L168 Benchmark]: RCFGBuilder took 10903.73 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 142.1 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 9.2 MB). Peak memory consumption was 712.6 MB. Max. memory is 7.1 GB. [2018-09-18 11:45:23,997 INFO L168 Benchmark]: TraceAbstraction took 213004.52 ms. Allocated memory was 2.7 GB in the beginning and 4.5 GB in the end (delta: 1.8 GB). Free memory was 2.3 GB in the beginning and 3.5 GB in the end (delta: -1.2 GB). Peak memory consumption was 602.1 MB. Max. memory is 7.1 GB. [2018-09-18 11:45:24,003 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2635.58 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: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1073.73 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.1 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 190.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 461.82 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 70.1 MB). Peak memory consumption was 70.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10903.73 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 142.1 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 9.2 MB). Peak memory consumption was 712.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213004.52 ms. Allocated memory was 2.7 GB in the beginning and 4.5 GB in the end (delta: 1.8 GB). Free memory was 2.3 GB in the beginning and 3.5 GB in the end (delta: -1.2 GB). Peak memory consumption was 602.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 132). Cancelled while BasicCegarLoop was constructing difference of abstraction (185290states) and FLOYD_HOARE automaton (currently 11 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (216915 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 212.9s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 184.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7420 SDtfs, 46228 SDslu, 7064 SDs, 0 SdLazy, 80060 SolverSat, 19296 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 147.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5989 GetRequests, 5837 SyntacticMatches, 21 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=185290occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 12.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 6639 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 12.2s InterpolantComputationTime, 5458 NumberOfCodeBlocks, 5458 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 8340 ConstructedInterpolants, 0 QuantifiedInterpolants, 7368963 SizeOfPredicates, 16 NumberOfNonLiveVariables, 5038 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 29 InterpolantComputations, 9 PerfectInterpolantSequences, 5877/6340 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/Problem13_label31_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-45-24-019.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label31_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-45-24-019.csv Completed graceful shutdown