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/Problem15_label08_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:45:26,632 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:45:26,634 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:45:26,648 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:45:26,648 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:45:26,649 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:45:26,650 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:45:26,652 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:45:26,654 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:45:26,655 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:45:26,656 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:45:26,656 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:45:26,657 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:45:26,658 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:45:26,659 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:45:26,660 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:45:26,661 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:45:26,663 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:45:26,665 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:45:26,666 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:45:26,668 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:45:26,669 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:45:26,672 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:45:26,683 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 21:45:26,712 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:45:26,712 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:45:26,715 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:45:26,715 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:45:26,716 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:45:26,716 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:45:26,717 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:45:26,717 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:45:26,717 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:45:26,717 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:45:26,717 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:45:26,717 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:45:26,719 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:45:26,719 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:45:26,719 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:45:26,719 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:45:26,719 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:45:26,719 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:45:26,720 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:45:26,720 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:45:26,720 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:45:26,720 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:45:26,721 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:45:26,721 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:45:26,721 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:45:26,721 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:45:26,721 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:45:26,723 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:45:26,723 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:45:26,723 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:45:26,723 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:45:26,724 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:45:26,724 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:45:26,724 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:45:26,801 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:45:26,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:45:26,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:45:26,828 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:45:26,828 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:45:26,829 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label08_true-unreach-call.c [2018-10-24 21:45:26,893 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/35dee9214/e47e0f88b18345f5a73e237d450b971f/FLAGf8a6371ee [2018-10-24 21:45:27,549 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:45:27,550 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label08_true-unreach-call.c [2018-10-24 21:45:27,575 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/35dee9214/e47e0f88b18345f5a73e237d450b971f/FLAGf8a6371ee [2018-10-24 21:45:27,597 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/35dee9214/e47e0f88b18345f5a73e237d450b971f [2018-10-24 21:45:27,610 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:45:27,612 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:45:27,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:45:27,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:45:27,623 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:45:27,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:45:27" (1/1) ... [2018-10-24 21:45:27,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b5137a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:27, skipping insertion in model container [2018-10-24 21:45:27,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:45:27" (1/1) ... [2018-10-24 21:45:27,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:45:27,762 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:45:28,657 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:45:28,662 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:45:28,960 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:45:28,985 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:45:28,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:28 WrapperNode [2018-10-24 21:45:28,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:45:28,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:45:28,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:45:28,987 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:45:28,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:28" (1/1) ... [2018-10-24 21:45:29,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:28" (1/1) ... [2018-10-24 21:45:29,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:45:29,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:45:29,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:45:29,384 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:45:29,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:28" (1/1) ... [2018-10-24 21:45:29,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:28" (1/1) ... [2018-10-24 21:45:29,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:28" (1/1) ... [2018-10-24 21:45:29,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:28" (1/1) ... [2018-10-24 21:45:29,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:28" (1/1) ... [2018-10-24 21:45:29,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:28" (1/1) ... [2018-10-24 21:45:29,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:28" (1/1) ... [2018-10-24 21:45:29,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:45:29,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:45:29,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:45:29,665 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:45:29,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:28" (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 21:45:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:45:29,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:45:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:45:29,739 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:45:29,739 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:45:29,739 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:45:29,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:45:29,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:45:29,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:45:29,740 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:45:37,929 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:45:37,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:45:37 BoogieIcfgContainer [2018-10-24 21:45:37,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:45:37,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:45:37,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:45:37,935 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:45:37,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:45:27" (1/3) ... [2018-10-24 21:45:37,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d50144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:45:37, skipping insertion in model container [2018-10-24 21:45:37,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:45:28" (2/3) ... [2018-10-24 21:45:37,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d50144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:45:37, skipping insertion in model container [2018-10-24 21:45:37,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:45:37" (3/3) ... [2018-10-24 21:45:37,939 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label08_true-unreach-call.c [2018-10-24 21:45:37,950 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:45:37,960 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:45:37,978 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:45:38,019 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:45:38,020 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:45:38,020 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:45:38,020 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:45:38,020 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:45:38,020 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:45:38,020 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:45:38,020 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:45:38,054 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 21:45:38,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-24 21:45:38,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:45:38,066 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] [2018-10-24 21:45:38,069 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:45:38,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:45:38,075 INFO L82 PathProgramCache]: Analyzing trace with hash -561435596, now seen corresponding path program 1 times [2018-10-24 21:45:38,078 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:45:38,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:45:38,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:45:38,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:45:38,136 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:45:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:45:38,607 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:45:38,725 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 21:45:38,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:45:38,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:45:38,729 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:45:38,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:45:38,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:45:38,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:45:38,758 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-10-24 21:45:43,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:45:43,197 INFO L93 Difference]: Finished difference Result 1194 states and 2152 transitions. [2018-10-24 21:45:43,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:45:43,204 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2018-10-24 21:45:43,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:45:43,229 INFO L225 Difference]: With dead ends: 1194 [2018-10-24 21:45:43,229 INFO L226 Difference]: Without dead ends: 754 [2018-10-24 21:45:43,241 INFO L605 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 [2018-10-24 21:45:43,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2018-10-24 21:45:43,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 752. [2018-10-24 21:45:43,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2018-10-24 21:45:43,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1325 transitions. [2018-10-24 21:45:43,512 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1325 transitions. Word has length 58 [2018-10-24 21:45:43,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:45:43,513 INFO L481 AbstractCegarLoop]: Abstraction has 752 states and 1325 transitions. [2018-10-24 21:45:43,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:45:43,514 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1325 transitions. [2018-10-24 21:45:43,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-24 21:45:43,528 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:45:43,530 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, 2, 2, 2, 2, 2, 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] [2018-10-24 21:45:43,530 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:45:43,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:45:43,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1198310345, now seen corresponding path program 1 times [2018-10-24 21:45:43,531 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:45:43,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:45:43,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:45:43,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:45:43,533 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:45:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:45:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:45:44,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:45:44,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:45:44,030 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:45:44,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:45:44,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:45:44,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:45:44,033 INFO L87 Difference]: Start difference. First operand 752 states and 1325 transitions. Second operand 6 states. [2018-10-24 21:45:59,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:45:59,049 INFO L93 Difference]: Finished difference Result 2839 states and 5159 transitions. [2018-10-24 21:45:59,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:45:59,050 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-10-24 21:45:59,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:45:59,068 INFO L225 Difference]: With dead ends: 2839 [2018-10-24 21:45:59,068 INFO L226 Difference]: Without dead ends: 2093 [2018-10-24 21:45:59,076 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:45:59,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2018-10-24 21:45:59,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 2055. [2018-10-24 21:45:59,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2055 states. [2018-10-24 21:45:59,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 3404 transitions. [2018-10-24 21:45:59,179 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 3404 transitions. Word has length 132 [2018-10-24 21:45:59,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:45:59,179 INFO L481 AbstractCegarLoop]: Abstraction has 2055 states and 3404 transitions. [2018-10-24 21:45:59,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:45:59,180 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 3404 transitions. [2018-10-24 21:45:59,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-24 21:45:59,192 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:45:59,192 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, 2, 2, 2, 2, 2, 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] [2018-10-24 21:45:59,193 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:45:59,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:45:59,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1211406466, now seen corresponding path program 1 times [2018-10-24 21:45:59,193 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:45:59,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:45:59,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:45:59,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:45:59,196 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:45:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:45:59,400 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:45:59,401 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:45:59,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:45:59,401 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:45:59,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:45:59,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:45:59,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:45:59,403 INFO L87 Difference]: Start difference. First operand 2055 states and 3404 transitions. Second operand 5 states. [2018-10-24 21:46:07,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:46:07,167 INFO L93 Difference]: Finished difference Result 6122 states and 10301 transitions. [2018-10-24 21:46:07,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:46:07,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-10-24 21:46:07,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:46:07,200 INFO L225 Difference]: With dead ends: 6122 [2018-10-24 21:46:07,201 INFO L226 Difference]: Without dead ends: 4073 [2018-10-24 21:46:07,210 INFO L605 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 [2018-10-24 21:46:07,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4073 states. [2018-10-24 21:46:07,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4073 to 3996. [2018-10-24 21:46:07,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3996 states. [2018-10-24 21:46:07,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 5874 transitions. [2018-10-24 21:46:07,343 INFO L78 Accepts]: Start accepts. Automaton has 3996 states and 5874 transitions. Word has length 135 [2018-10-24 21:46:07,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:46:07,343 INFO L481 AbstractCegarLoop]: Abstraction has 3996 states and 5874 transitions. [2018-10-24 21:46:07,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:46:07,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3996 states and 5874 transitions. [2018-10-24 21:46:07,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-24 21:46:07,346 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:46:07,347 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:46:07,347 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:46:07,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:46:07,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1183440816, now seen corresponding path program 1 times [2018-10-24 21:46:07,348 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:46:07,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:46:07,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:46:07,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:46:07,349 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:46:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:46:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:46:07,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:46:07,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:46:07,558 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:46:07,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:46:07,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:46:07,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:46:07,559 INFO L87 Difference]: Start difference. First operand 3996 states and 5874 transitions. Second operand 6 states. [2018-10-24 21:46:14,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:46:14,449 INFO L93 Difference]: Finished difference Result 11083 states and 16941 transitions. [2018-10-24 21:46:14,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:46:14,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-10-24 21:46:14,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:46:14,500 INFO L225 Difference]: With dead ends: 11083 [2018-10-24 21:46:14,500 INFO L226 Difference]: Without dead ends: 7093 [2018-10-24 21:46:14,534 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:46:14,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7093 states. [2018-10-24 21:46:14,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7093 to 6984. [2018-10-24 21:46:14,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6984 states. [2018-10-24 21:46:14,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6984 states to 6984 states and 9527 transitions. [2018-10-24 21:46:14,733 INFO L78 Accepts]: Start accepts. Automaton has 6984 states and 9527 transitions. Word has length 145 [2018-10-24 21:46:14,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:46:14,733 INFO L481 AbstractCegarLoop]: Abstraction has 6984 states and 9527 transitions. [2018-10-24 21:46:14,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:46:14,734 INFO L276 IsEmpty]: Start isEmpty. Operand 6984 states and 9527 transitions. [2018-10-24 21:46:14,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-24 21:46:14,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:46:14,741 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, 2, 2, 2, 2, 2, 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] [2018-10-24 21:46:14,742 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:46:14,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:46:14,742 INFO L82 PathProgramCache]: Analyzing trace with hash 984930483, now seen corresponding path program 1 times [2018-10-24 21:46:14,743 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:46:14,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:46:14,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:46:14,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:46:14,744 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:46:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:46:15,096 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:46:15,096 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:46:15,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:46:15,096 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:46:15,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:46:15,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:46:15,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:46:15,098 INFO L87 Difference]: Start difference. First operand 6984 states and 9527 transitions. Second operand 5 states. [2018-10-24 21:46:28,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:46:28,477 INFO L93 Difference]: Finished difference Result 18666 states and 26327 transitions. [2018-10-24 21:46:28,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:46:28,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2018-10-24 21:46:28,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:46:28,533 INFO L225 Difference]: With dead ends: 18666 [2018-10-24 21:46:28,534 INFO L226 Difference]: Without dead ends: 11688 [2018-10-24 21:46:28,573 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:46:28,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11688 states. [2018-10-24 21:46:28,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11688 to 11527. [2018-10-24 21:46:28,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11527 states. [2018-10-24 21:46:28,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11527 states to 11527 states and 15503 transitions. [2018-10-24 21:46:28,857 INFO L78 Accepts]: Start accepts. Automaton has 11527 states and 15503 transitions. Word has length 155 [2018-10-24 21:46:28,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:46:28,858 INFO L481 AbstractCegarLoop]: Abstraction has 11527 states and 15503 transitions. [2018-10-24 21:46:28,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:46:28,858 INFO L276 IsEmpty]: Start isEmpty. Operand 11527 states and 15503 transitions. [2018-10-24 21:46:28,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-24 21:46:28,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:46:28,862 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, 2, 2, 2, 2, 2, 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] [2018-10-24 21:46:28,863 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:46:28,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:46:28,863 INFO L82 PathProgramCache]: Analyzing trace with hash 528602966, now seen corresponding path program 1 times [2018-10-24 21:46:28,863 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:46:28,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:46:28,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:46:28,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:46:28,865 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:46:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:46:29,448 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-10-24 21:46:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:46:29,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:46:29,828 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:46:29,829 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 171 with the following transitions: [2018-10-24 21:46:29,831 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [437], [439], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:46:29,929 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:46:29,930 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:46:32,569 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:46:32,570 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:46:32,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:46:32,584 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:46:34,159 INFO L232 lantSequenceWeakener]: Weakened 165 states. On average, predicates are now at 78.46% of their original sizes. [2018-10-24 21:46:34,160 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:46:34,709 INFO L413 sIntCurrentIteration]: We have 169 unified AI predicates [2018-10-24 21:46:34,710 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:46:34,711 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:46:34,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-10-24 21:46:34,711 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:46:34,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 21:46:34,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 21:46:34,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:46:34,712 INFO L87 Difference]: Start difference. First operand 11527 states and 15503 transitions. Second operand 8 states. [2018-10-24 21:46:39,592 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:48:11,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:48:11,307 INFO L93 Difference]: Finished difference Result 23041 states and 30996 transitions. [2018-10-24 21:48:11,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:48:11,307 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 170 [2018-10-24 21:48:11,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:48:11,355 INFO L225 Difference]: With dead ends: 23041 [2018-10-24 21:48:11,355 INFO L226 Difference]: Without dead ends: 11520 [2018-10-24 21:48:11,393 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 171 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:48:11,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11520 states. [2018-10-24 21:48:11,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11520 to 11518. [2018-10-24 21:48:11,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11518 states. [2018-10-24 21:48:11,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11518 states to 11518 states and 15462 transitions. [2018-10-24 21:48:11,620 INFO L78 Accepts]: Start accepts. Automaton has 11518 states and 15462 transitions. Word has length 170 [2018-10-24 21:48:11,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:48:11,620 INFO L481 AbstractCegarLoop]: Abstraction has 11518 states and 15462 transitions. [2018-10-24 21:48:11,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 21:48:11,620 INFO L276 IsEmpty]: Start isEmpty. Operand 11518 states and 15462 transitions. [2018-10-24 21:48:11,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-24 21:48:11,626 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:48:11,627 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:48:11,627 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:48:11,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:48:11,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1907556257, now seen corresponding path program 1 times [2018-10-24 21:48:11,628 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:48:11,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:11,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:48:11,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:11,629 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:48:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:48:12,164 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:48:12,165 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:48:12,165 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:48:12,165 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-10-24 21:48:12,166 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [437], [439], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:48:12,172 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:48:12,172 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:48:14,373 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:48:21,169 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:48:21,170 INFO L272 AbstractInterpreter]: Visited 120 different actions 347 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:48:21,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:48:21,180 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:48:23,660 INFO L232 lantSequenceWeakener]: Weakened 65 states. On average, predicates are now at 78.25% of their original sizes. [2018-10-24 21:48:23,660 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 21:49:12,636 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:49:12,640 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:49:12,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:49:12 BoogieIcfgContainer [2018-10-24 21:49:12,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:49:12,642 INFO L168 Benchmark]: Toolchain (without parser) took 225030.90 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 168.9 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-10-24 21:49:12,643 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:49:12,644 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1372.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:49:12,645 INFO L168 Benchmark]: Boogie Procedure Inliner took 396.17 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.7 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -842.1 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:49:12,646 INFO L168 Benchmark]: Boogie Preprocessor took 280.51 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:49:12,648 INFO L168 Benchmark]: RCFGBuilder took 8266.39 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 296.2 MB). Peak memory consumption was 296.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:49:12,648 INFO L168 Benchmark]: TraceAbstraction took 214709.59 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 1.2 GB in the end (delta: 580.8 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 21:49:12,654 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1372.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 396.17 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.7 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -842.1 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 280.51 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8266.39 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 296.2 MB). Peak memory consumption was 296.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214709.59 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 1.2 GB in the end (delta: 580.8 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 160]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 160). Cancelled while BasicCegarLoop was analyzing trace of length 267 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 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 214.6s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 144.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1326 SDtfs, 7142 SDslu, 1561 SDs, 0 SdLazy, 13668 SolverSat, 2773 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 104.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 214 GetRequests, 177 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11527occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9953499632672143 AbsIntWeakeningRatio, 0.10599078341013825 AbsIntAvgWeakeningVarsNumRemoved, 659.0276497695853 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 389 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 795 NumberOfCodeBlocks, 795 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 789 ConstructedInterpolants, 0 QuantifiedInterpolants, 366304 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 204/255 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown