java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label55_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:34:04,909 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:34:04,912 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:34:04,926 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:34:04,926 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:34:04,928 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:34:04,929 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:34:04,930 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:34:04,932 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:34:04,933 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:34:04,934 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:34:04,934 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:34:04,935 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:34:04,936 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:34:04,937 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:34:04,938 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:34:04,939 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:34:04,941 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:34:04,943 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:34:04,945 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:34:04,946 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:34:04,947 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:34:04,950 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:34:04,959 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 19:34:04,975 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:34:04,976 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:34:04,976 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:34:04,977 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:34:04,977 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:34:04,977 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:34:04,977 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:34:04,977 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:34:04,978 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:34:04,978 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:34:04,978 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:34:04,978 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:34:04,979 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:34:04,979 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:34:04,979 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:34:04,979 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:34:04,980 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:34:04,980 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:34:04,980 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:34:04,980 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:34:04,980 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:34:04,981 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:34:04,981 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:34:04,981 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:34:04,981 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:34:04,981 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:34:04,981 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:34:04,983 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:34:04,983 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:34:04,983 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:34:04,983 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:34:04,983 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:34:04,984 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:34:04,984 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:34:05,028 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:34:05,041 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:34:05,045 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:34:05,047 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:34:05,047 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:34:05,048 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label55_true-unreach-call_false-termination.c [2018-10-24 19:34:05,115 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a3cae97b5/a39016ebab5d4daf8461913332addaa1/FLAGd2e6d1c69 [2018-10-24 19:34:05,691 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:34:05,692 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label55_true-unreach-call_false-termination.c [2018-10-24 19:34:05,710 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a3cae97b5/a39016ebab5d4daf8461913332addaa1/FLAGd2e6d1c69 [2018-10-24 19:34:05,730 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a3cae97b5/a39016ebab5d4daf8461913332addaa1 [2018-10-24 19:34:05,745 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:34:05,748 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:34:05,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:34:05,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:34:05,756 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:34:05,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:34:05" (1/1) ... [2018-10-24 19:34:05,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379aca2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:05, skipping insertion in model container [2018-10-24 19:34:05,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:34:05" (1/1) ... [2018-10-24 19:34:05,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:34:05,841 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:34:06,335 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:34:06,341 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:34:06,501 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:34:06,526 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:34:06,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:06 WrapperNode [2018-10-24 19:34:06,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:34:06,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:34:06,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:34:06,528 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:34:06,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:06" (1/1) ... [2018-10-24 19:34:06,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:06" (1/1) ... [2018-10-24 19:34:06,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:34:06,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:34:06,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:34:06,757 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:34:06,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:06" (1/1) ... [2018-10-24 19:34:06,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:06" (1/1) ... [2018-10-24 19:34:06,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:06" (1/1) ... [2018-10-24 19:34:06,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:06" (1/1) ... [2018-10-24 19:34:06,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:06" (1/1) ... [2018-10-24 19:34:06,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:06" (1/1) ... [2018-10-24 19:34:06,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:06" (1/1) ... [2018-10-24 19:34:06,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:34:06,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:34:06,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:34:06,871 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:34:06,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 19:34:06,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:34:06,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:34:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:34:06,940 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:34:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:34:06,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:34:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:34:06,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:34:10,325 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:34:10,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:34:10 BoogieIcfgContainer [2018-10-24 19:34:10,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:34:10,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:34:10,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:34:10,331 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:34:10,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:34:05" (1/3) ... [2018-10-24 19:34:10,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417f998a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:34:10, skipping insertion in model container [2018-10-24 19:34:10,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:06" (2/3) ... [2018-10-24 19:34:10,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417f998a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:34:10, skipping insertion in model container [2018-10-24 19:34:10,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:34:10" (3/3) ... [2018-10-24 19:34:10,337 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label55_true-unreach-call_false-termination.c [2018-10-24 19:34:10,351 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:34:10,365 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:34:10,383 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:34:10,427 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:34:10,427 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:34:10,427 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:34:10,427 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:34:10,427 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:34:10,428 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:34:10,428 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:34:10,428 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:34:10,458 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-24 19:34:10,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-24 19:34:10,473 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:34:10,474 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:34:10,477 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:34:10,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:34:10,484 INFO L82 PathProgramCache]: Analyzing trace with hash -301102600, now seen corresponding path program 1 times [2018-10-24 19:34:10,486 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:34:10,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:10,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:34:10,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:10,538 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:34:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:34:11,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:34:11,159 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:34:11,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:34:11,160 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:34:11,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:34:11,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:34:11,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:34:11,186 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-24 19:34:12,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:34:12,806 INFO L93 Difference]: Finished difference Result 627 states and 1072 transitions. [2018-10-24 19:34:12,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:34:12,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2018-10-24 19:34:12,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:34:12,830 INFO L225 Difference]: With dead ends: 627 [2018-10-24 19:34:12,831 INFO L226 Difference]: Without dead ends: 388 [2018-10-24 19:34:12,838 INFO L605 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 [2018-10-24 19:34:12,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-10-24 19:34:12,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 383. [2018-10-24 19:34:12,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-10-24 19:34:12,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 619 transitions. [2018-10-24 19:34:12,920 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 619 transitions. Word has length 112 [2018-10-24 19:34:12,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:34:12,921 INFO L481 AbstractCegarLoop]: Abstraction has 383 states and 619 transitions. [2018-10-24 19:34:12,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:34:12,921 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 619 transitions. [2018-10-24 19:34:12,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-24 19:34:12,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:34:12,931 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 19:34:12,931 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:34:12,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:34:12,932 INFO L82 PathProgramCache]: Analyzing trace with hash 178328325, now seen corresponding path program 1 times [2018-10-24 19:34:12,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:34:12,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:12,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:34:12,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:12,934 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:34:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:34:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:34:13,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:34:13,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:34:13,323 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:34:13,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:34:13,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:34:13,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:34:13,326 INFO L87 Difference]: Start difference. First operand 383 states and 619 transitions. Second operand 5 states. [2018-10-24 19:34:14,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:34:14,996 INFO L93 Difference]: Finished difference Result 905 states and 1519 transitions. [2018-10-24 19:34:14,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:34:14,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-10-24 19:34:14,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:34:15,002 INFO L225 Difference]: With dead ends: 905 [2018-10-24 19:34:15,003 INFO L226 Difference]: Without dead ends: 382 [2018-10-24 19:34:15,010 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:34:15,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-24 19:34:15,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-10-24 19:34:15,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-24 19:34:15,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 613 transitions. [2018-10-24 19:34:15,046 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 613 transitions. Word has length 121 [2018-10-24 19:34:15,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:34:15,047 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 613 transitions. [2018-10-24 19:34:15,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:34:15,047 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 613 transitions. [2018-10-24 19:34:15,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-24 19:34:15,053 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:34:15,053 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 19:34:15,054 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:34:15,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:34:15,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1372472321, now seen corresponding path program 1 times [2018-10-24 19:34:15,057 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:34:15,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:15,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:34:15,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:15,059 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:34:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:34:15,346 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-24 19:34:15,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:34:15,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:34:15,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:34:15,518 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:34:15,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:34:15,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:34:15,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:34:15,520 INFO L87 Difference]: Start difference. First operand 382 states and 613 transitions. Second operand 6 states. [2018-10-24 19:34:18,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:34:18,225 INFO L93 Difference]: Finished difference Result 1241 states and 2101 transitions. [2018-10-24 19:34:18,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:34:18,226 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-10-24 19:34:18,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:34:18,236 INFO L225 Difference]: With dead ends: 1241 [2018-10-24 19:34:18,236 INFO L226 Difference]: Without dead ends: 865 [2018-10-24 19:34:18,239 INFO L605 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 [2018-10-24 19:34:18,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2018-10-24 19:34:18,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 818. [2018-10-24 19:34:18,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2018-10-24 19:34:18,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1267 transitions. [2018-10-24 19:34:18,308 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1267 transitions. Word has length 123 [2018-10-24 19:34:18,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:34:18,309 INFO L481 AbstractCegarLoop]: Abstraction has 818 states and 1267 transitions. [2018-10-24 19:34:18,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:34:18,309 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1267 transitions. [2018-10-24 19:34:18,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-24 19:34:18,314 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:34:18,314 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 19:34:18,314 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:34:18,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:34:18,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1586168017, now seen corresponding path program 1 times [2018-10-24 19:34:18,315 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:34:18,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:18,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:34:18,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:18,316 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:34:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:34:18,511 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:34:18,511 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:34:18,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:34:18,512 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:34:18,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:34:18,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:34:18,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:34:18,513 INFO L87 Difference]: Start difference. First operand 818 states and 1267 transitions. Second operand 3 states. [2018-10-24 19:34:20,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:34:20,788 INFO L93 Difference]: Finished difference Result 2297 states and 3692 transitions. [2018-10-24 19:34:20,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:34:20,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2018-10-24 19:34:20,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:34:20,802 INFO L225 Difference]: With dead ends: 2297 [2018-10-24 19:34:20,802 INFO L226 Difference]: Without dead ends: 1485 [2018-10-24 19:34:20,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:34:20,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2018-10-24 19:34:20,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1478. [2018-10-24 19:34:20,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1478 states. [2018-10-24 19:34:20,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2327 transitions. [2018-10-24 19:34:20,873 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2327 transitions. Word has length 126 [2018-10-24 19:34:20,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:34:20,874 INFO L481 AbstractCegarLoop]: Abstraction has 1478 states and 2327 transitions. [2018-10-24 19:34:20,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:34:20,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2327 transitions. [2018-10-24 19:34:20,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-24 19:34:20,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:34:20,881 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 19:34:20,881 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:34:20,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:34:20,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1132847554, now seen corresponding path program 1 times [2018-10-24 19:34:20,882 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:34:20,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:20,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:34:20,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:20,885 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:34:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:34:21,339 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-24 19:34:21,578 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-24 19:34:21,647 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:34:21,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:34:21,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:34:21,648 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:34:21,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:34:21,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:34:21,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:34:21,650 INFO L87 Difference]: Start difference. First operand 1478 states and 2327 transitions. Second operand 5 states. [2018-10-24 19:34:22,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:34:22,688 INFO L93 Difference]: Finished difference Result 3050 states and 4851 transitions. [2018-10-24 19:34:22,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:34:22,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2018-10-24 19:34:22,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:34:22,702 INFO L225 Difference]: With dead ends: 3050 [2018-10-24 19:34:22,702 INFO L226 Difference]: Without dead ends: 1430 [2018-10-24 19:34:22,710 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:34:22,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2018-10-24 19:34:22,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1430. [2018-10-24 19:34:22,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1430 states. [2018-10-24 19:34:22,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 2227 transitions. [2018-10-24 19:34:22,755 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 2227 transitions. Word has length 137 [2018-10-24 19:34:22,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:34:22,755 INFO L481 AbstractCegarLoop]: Abstraction has 1430 states and 2227 transitions. [2018-10-24 19:34:22,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:34:22,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 2227 transitions. [2018-10-24 19:34:22,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-24 19:34:22,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:34:22,762 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:34:22,762 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:34:22,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:34:22,762 INFO L82 PathProgramCache]: Analyzing trace with hash 2082625773, now seen corresponding path program 1 times [2018-10-24 19:34:22,763 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:34:22,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:22,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:34:22,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:22,764 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:34:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:34:22,965 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 46 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:34:22,966 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:34:22,966 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:34:22,967 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 164 with the following transitions: [2018-10-24 19:34:22,969 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [131], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [567], [569], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:34:23,042 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:34:23,042 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:35:13,126 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:35:13,127 INFO L272 AbstractInterpreter]: Visited 116 different actions 340 times. Merged at 7 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 38 variables. [2018-10-24 19:35:13,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:35:13,143 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:35:19,035 INFO L232 lantSequenceWeakener]: Weakened 23 states. On average, predicates are now at 84.06% of their original sizes. [2018-10-24 19:35:19,035 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 19:38:32,993 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:38:32,999 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:38:33,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:38:32 BoogieIcfgContainer [2018-10-24 19:38:33,000 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:38:33,001 INFO L168 Benchmark]: Toolchain (without parser) took 267254.62 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 19:38:33,002 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-24 19:38:33,005 INFO L168 Benchmark]: CACSL2BoogieTranslator took 777.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:38:33,006 INFO L168 Benchmark]: Boogie Procedure Inliner took 228.77 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:38:33,008 INFO L168 Benchmark]: Boogie Preprocessor took 113.25 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:38:33,010 INFO L168 Benchmark]: RCFGBuilder took 3455.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 103.2 MB). Peak memory consumption was 103.2 MB. Max. memory is 7.1 GB. [2018-10-24 19:38:33,011 INFO L168 Benchmark]: TraceAbstraction took 262672.35 ms. Allocated memory was 2.3 GB in the beginning and 3.6 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 3.0 GB in the end (delta: -921.9 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 19:38:33,020 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 777.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 228.77 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.25 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3455.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 103.2 MB). Peak memory consumption was 103.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 262672.35 ms. Allocated memory was 2.3 GB in the beginning and 3.6 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 3.0 GB in the end (delta: -921.9 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 487]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 487). Cancelled while BasicCegarLoop was analyzing trace of length 164 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 17 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 262.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 9.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 674 SDtfs, 2319 SDslu, 496 SDs, 0 SdLazy, 3496 SolverSat, 763 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1478occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 50.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9942837574416525 AbsIntWeakeningRatio, 0.2037037037037037 AbsIntAvgWeakeningVarsNumRemoved, 973.0432098765432 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 619 NumberOfCodeBlocks, 619 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 614 ConstructedInterpolants, 0 QuantifiedInterpolants, 563879 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 47/47 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown