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/Problem16_label35_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:59:54,855 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:59:54,857 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:59:54,870 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:59:54,871 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:59:54,872 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:59:54,873 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:59:54,875 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:59:54,876 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:59:54,877 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:59:54,878 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:59:54,878 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:59:54,879 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:59:54,880 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:59:54,881 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:59:54,882 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:59:54,883 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:59:54,885 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:59:54,887 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:59:54,888 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:59:54,889 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:59:54,891 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:59:54,893 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:59:54,900 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:59:54,900 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:59:54,901 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:59:54,902 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:59:54,902 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 21:59:54,918 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:59:54,919 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:59:54,920 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:59:54,920 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:59:54,920 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:59:54,920 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:59:54,920 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:59:54,921 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:59:54,921 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:59:54,921 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:59:54,921 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:59:54,921 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:59:54,922 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:59:54,922 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:59:54,922 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:59:54,922 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:59:54,923 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:59:54,923 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:59:54,923 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:59:54,923 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:59:54,923 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:59:54,924 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:59:54,924 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:59:54,924 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:59:54,924 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:59:54,924 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:59:54,925 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:59:54,925 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:59:54,925 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:59:54,925 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:59:54,925 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:59:54,926 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:59:54,926 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:59:54,926 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:59:54,980 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:59:54,998 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:59:55,001 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:59:55,003 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:59:55,003 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:59:55,004 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label35_true-unreach-call.c [2018-10-24 21:59:55,070 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5730dd0f9/14ee6f37cf684b7e8c8079738c84d241/FLAG5ddcee11d [2018-10-24 21:59:55,717 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:59:55,719 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label35_true-unreach-call.c [2018-10-24 21:59:55,740 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5730dd0f9/14ee6f37cf684b7e8c8079738c84d241/FLAG5ddcee11d [2018-10-24 21:59:55,759 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5730dd0f9/14ee6f37cf684b7e8c8079738c84d241 [2018-10-24 21:59:55,770 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:59:55,771 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:59:55,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:59:55,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:59:55,777 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:59:55,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:59:55" (1/1) ... [2018-10-24 21:59:55,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c237445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:55, skipping insertion in model container [2018-10-24 21:59:55,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:59:55" (1/1) ... [2018-10-24 21:59:55,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:59:55,900 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:59:56,638 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:59:56,643 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:59:56,929 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:59:56,953 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:59:56,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:56 WrapperNode [2018-10-24 21:59:56,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:59:56,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:59:56,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:59:56,956 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:59:56,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:56" (1/1) ... [2018-10-24 21:59:57,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:56" (1/1) ... [2018-10-24 21:59:57,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:59:57,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:59:57,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:59:57,350 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:59:57,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:56" (1/1) ... [2018-10-24 21:59:57,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:56" (1/1) ... [2018-10-24 21:59:57,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:56" (1/1) ... [2018-10-24 21:59:57,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:56" (1/1) ... [2018-10-24 21:59:57,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:56" (1/1) ... [2018-10-24 21:59:57,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:56" (1/1) ... [2018-10-24 21:59:57,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:56" (1/1) ... [2018-10-24 21:59:57,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:59:57,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:59:57,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:59:57,534 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:59:57,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:56" (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 21:59:57,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:59:57,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:59:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:59:57,610 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:59:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:59:57,611 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:59:57,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:59:57,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:59:57,611 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:59:57,611 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:00:04,449 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:00:04,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:00:04 BoogieIcfgContainer [2018-10-24 22:00:04,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:00:04,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:00:04,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:00:04,458 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:00:04,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:59:55" (1/3) ... [2018-10-24 22:00:04,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c9f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:00:04, skipping insertion in model container [2018-10-24 22:00:04,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:56" (2/3) ... [2018-10-24 22:00:04,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c9f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:00:04, skipping insertion in model container [2018-10-24 22:00:04,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:00:04" (3/3) ... [2018-10-24 22:00:04,464 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label35_true-unreach-call.c [2018-10-24 22:00:04,474 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:00:04,488 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:00:04,506 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:00:04,546 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:00:04,547 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:00:04,547 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:00:04,547 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:00:04,547 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:00:04,547 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:00:04,548 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:00:04,548 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:00:04,581 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-24 22:00:04,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-24 22:00:04,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:00:04,592 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] [2018-10-24 22:00:04,595 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:00:04,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:00:04,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1960867948, now seen corresponding path program 1 times [2018-10-24 22:00:04,604 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:00:04,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:00:04,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:00:04,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:00:04,655 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:00:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:00:05,102 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 22:00:05,118 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 22:00:05,121 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:00:05,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:00:05,121 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:00:05,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:00:05,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:00:05,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:00:05,148 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-10-24 22:00:10,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:00:10,862 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-10-24 22:00:10,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:00:10,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2018-10-24 22:00:10,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:00:10,896 INFO L225 Difference]: With dead ends: 1513 [2018-10-24 22:00:10,896 INFO L226 Difference]: Without dead ends: 1097 [2018-10-24 22:00:10,906 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:00:10,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-10-24 22:00:11,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 744. [2018-10-24 22:00:11,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 22:00:11,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1357 transitions. [2018-10-24 22:00:11,051 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1357 transitions. Word has length 48 [2018-10-24 22:00:11,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:00:11,052 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1357 transitions. [2018-10-24 22:00:11,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:00:11,052 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1357 transitions. [2018-10-24 22:00:11,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-24 22:00:11,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:00:11,065 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:11,065 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:00:11,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:00:11,067 INFO L82 PathProgramCache]: Analyzing trace with hash 321031098, now seen corresponding path program 1 times [2018-10-24 22:00:11,068 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:00:11,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:00:11,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:00:11,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:00:11,069 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:00:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:00:11,412 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:00:11,413 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:00:11,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:00:11,413 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:00:11,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:00:11,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:00:11,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:00:11,416 INFO L87 Difference]: Start difference. First operand 744 states and 1357 transitions. Second operand 5 states. [2018-10-24 22:00:16,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:00:16,860 INFO L93 Difference]: Finished difference Result 2196 states and 4092 transitions. [2018-10-24 22:00:16,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:00:16,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2018-10-24 22:00:16,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:00:16,876 INFO L225 Difference]: With dead ends: 2196 [2018-10-24 22:00:16,877 INFO L226 Difference]: Without dead ends: 1458 [2018-10-24 22:00:16,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:00:16,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2018-10-24 22:00:16,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1438. [2018-10-24 22:00:16,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1438 states. [2018-10-24 22:00:16,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2551 transitions. [2018-10-24 22:00:16,972 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2551 transitions. Word has length 118 [2018-10-24 22:00:16,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:00:16,972 INFO L481 AbstractCegarLoop]: Abstraction has 1438 states and 2551 transitions. [2018-10-24 22:00:16,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:00:16,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2551 transitions. [2018-10-24 22:00:16,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-24 22:00:16,978 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:00:16,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:16,984 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:00:16,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:00:16,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1441710001, now seen corresponding path program 1 times [2018-10-24 22:00:16,985 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:00:16,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:00:16,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:00:16,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:00:16,987 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:00:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:00:17,280 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:00:17,530 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:00:17,530 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:00:17,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:00:17,530 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:00:17,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:00:17,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:00:17,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:00:17,532 INFO L87 Difference]: Start difference. First operand 1438 states and 2551 transitions. Second operand 6 states. [2018-10-24 22:00:22,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:00:22,309 INFO L93 Difference]: Finished difference Result 4237 states and 7540 transitions. [2018-10-24 22:00:22,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:00:22,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-10-24 22:00:22,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:00:22,327 INFO L225 Difference]: With dead ends: 4237 [2018-10-24 22:00:22,328 INFO L226 Difference]: Without dead ends: 2805 [2018-10-24 22:00:22,338 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:00:22,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2018-10-24 22:00:22,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 2785. [2018-10-24 22:00:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2785 states. [2018-10-24 22:00:22,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 4352 transitions. [2018-10-24 22:00:22,422 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 4352 transitions. Word has length 121 [2018-10-24 22:00:22,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:00:22,423 INFO L481 AbstractCegarLoop]: Abstraction has 2785 states and 4352 transitions. [2018-10-24 22:00:22,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:00:22,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 4352 transitions. [2018-10-24 22:00:22,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-24 22:00:22,425 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:00:22,425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:22,425 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:00:22,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:00:22,426 INFO L82 PathProgramCache]: Analyzing trace with hash 692588274, now seen corresponding path program 1 times [2018-10-24 22:00:22,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:00:22,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:00:22,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:00:22,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:00:22,427 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:00:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:00:22,662 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:00:22,662 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:00:22,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:00:22,662 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:00:22,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:00:22,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:00:22,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:00:22,663 INFO L87 Difference]: Start difference. First operand 2785 states and 4352 transitions. Second operand 6 states. [2018-10-24 22:00:26,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:00:26,969 INFO L93 Difference]: Finished difference Result 6952 states and 11048 transitions. [2018-10-24 22:00:26,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:00:26,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-10-24 22:00:26,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:00:26,996 INFO L225 Difference]: With dead ends: 6952 [2018-10-24 22:00:26,996 INFO L226 Difference]: Without dead ends: 4173 [2018-10-24 22:00:27,012 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 22:00:27,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4173 states. [2018-10-24 22:00:27,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4173 to 4153. [2018-10-24 22:00:27,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4153 states. [2018-10-24 22:00:27,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4153 states to 4153 states and 5896 transitions. [2018-10-24 22:00:27,142 INFO L78 Accepts]: Start accepts. Automaton has 4153 states and 5896 transitions. Word has length 122 [2018-10-24 22:00:27,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:00:27,143 INFO L481 AbstractCegarLoop]: Abstraction has 4153 states and 5896 transitions. [2018-10-24 22:00:27,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:00:27,143 INFO L276 IsEmpty]: Start isEmpty. Operand 4153 states and 5896 transitions. [2018-10-24 22:00:27,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 22:00:27,145 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:00:27,146 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:27,146 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:00:27,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:00:27,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1832365575, now seen corresponding path program 1 times [2018-10-24 22:00:27,146 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:00:27,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:00:27,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:00:27,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:00:27,148 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:00:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:00:27,419 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:00:27,475 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:00:27,476 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:00:27,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:00:27,476 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:00:27,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:00:27,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:00:27,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:00:27,478 INFO L87 Difference]: Start difference. First operand 4153 states and 5896 transitions. Second operand 6 states. [2018-10-24 22:00:32,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:00:32,835 INFO L93 Difference]: Finished difference Result 11374 states and 16767 transitions. [2018-10-24 22:00:32,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:00:32,841 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-24 22:00:32,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:00:32,880 INFO L225 Difference]: With dead ends: 11374 [2018-10-24 22:00:32,881 INFO L226 Difference]: Without dead ends: 7227 [2018-10-24 22:00:32,911 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:00:32,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7227 states. [2018-10-24 22:00:33,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7227 to 7152. [2018-10-24 22:00:33,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7152 states. [2018-10-24 22:00:33,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7152 states to 7152 states and 9826 transitions. [2018-10-24 22:00:33,098 INFO L78 Accepts]: Start accepts. Automaton has 7152 states and 9826 transitions. Word has length 125 [2018-10-24 22:00:33,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:00:33,099 INFO L481 AbstractCegarLoop]: Abstraction has 7152 states and 9826 transitions. [2018-10-24 22:00:33,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:00:33,099 INFO L276 IsEmpty]: Start isEmpty. Operand 7152 states and 9826 transitions. [2018-10-24 22:00:33,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-24 22:00:33,101 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:00:33,102 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:33,102 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:00:33,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:00:33,102 INFO L82 PathProgramCache]: Analyzing trace with hash 911780215, now seen corresponding path program 1 times [2018-10-24 22:00:33,102 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:00:33,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:00:33,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:00:33,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:00:33,104 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:00:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:00:33,359 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:00:33,746 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:00:33,746 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:00:33,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:00:33,747 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:00:33,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:00:33,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:00:33,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:00:33,748 INFO L87 Difference]: Start difference. First operand 7152 states and 9826 transitions. Second operand 6 states. [2018-10-24 22:00:39,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:00:39,811 INFO L93 Difference]: Finished difference Result 17771 states and 25546 transitions. [2018-10-24 22:00:39,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:00:39,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-10-24 22:00:39,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:00:39,870 INFO L225 Difference]: With dead ends: 17771 [2018-10-24 22:00:39,871 INFO L226 Difference]: Without dead ends: 10625 [2018-10-24 22:00:39,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:00:39,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10625 states. [2018-10-24 22:00:40,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10625 to 10585. [2018-10-24 22:00:40,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10585 states. [2018-10-24 22:00:40,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10585 states to 10585 states and 13819 transitions. [2018-10-24 22:00:40,185 INFO L78 Accepts]: Start accepts. Automaton has 10585 states and 13819 transitions. Word has length 133 [2018-10-24 22:00:40,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:00:40,185 INFO L481 AbstractCegarLoop]: Abstraction has 10585 states and 13819 transitions. [2018-10-24 22:00:40,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:00:40,185 INFO L276 IsEmpty]: Start isEmpty. Operand 10585 states and 13819 transitions. [2018-10-24 22:00:40,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-24 22:00:40,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:00:40,188 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:40,189 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:00:40,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:00:40,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1008425326, now seen corresponding path program 1 times [2018-10-24 22:00:40,189 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:00:40,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:00:40,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:00:40,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:00:40,191 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:00:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:00:40,417 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:00:40,776 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 22:00:40,777 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:00:40,777 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:00:40,779 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2018-10-24 22:00:40,784 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [463], [465], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 22:00:40,893 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:00:40,893 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:00:42,863 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:00:50,050 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:00:50,052 INFO L272 AbstractInterpreter]: Visited 99 different actions 288 times. Merged at 5 different actions 13 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 22:00:50,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:00:50,064 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:00:52,393 INFO L232 lantSequenceWeakener]: Weakened 16 states. On average, predicates are now at 82.95% of their original sizes. [2018-10-24 22:00:52,393 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:01:42,582 INFO L413 sIntCurrentIteration]: We have 139 unified AI predicates [2018-10-24 22:01:42,583 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:01:42,583 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:01:42,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [4] total 16 [2018-10-24 22:01:42,584 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:01:42,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 22:01:42,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 22:01:42,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-10-24 22:01:42,585 INFO L87 Difference]: Start difference. First operand 10585 states and 13819 transitions. Second operand 14 states. Received shutdown request... [2018-10-24 22:04:03,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-24 22:04:03,789 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:04:03,794 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:04:03,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:04:03 BoogieIcfgContainer [2018-10-24 22:04:03,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:04:03,795 INFO L168 Benchmark]: Toolchain (without parser) took 248024.91 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 546.8 MB. Max. memory is 7.1 GB. [2018-10-24 22:04:03,797 INFO L168 Benchmark]: CDTParser took 0.24 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 22:04:03,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1181.73 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:04:03,798 INFO L168 Benchmark]: Boogie Procedure Inliner took 394.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -862.1 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:04:03,799 INFO L168 Benchmark]: Boogie Preprocessor took 183.38 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:04:03,799 INFO L168 Benchmark]: RCFGBuilder took 6916.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 262.8 MB). Peak memory consumption was 262.8 MB. Max. memory is 7.1 GB. [2018-10-24 22:04:03,800 INFO L168 Benchmark]: TraceAbstraction took 239343.77 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.5 GB in the end (delta: -1.6 GB). Peak memory consumption was 301.9 MB. Max. memory is 7.1 GB. [2018-10-24 22:04:03,806 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1181.73 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 394.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -862.1 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 183.38 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6916.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 262.8 MB). Peak memory consumption was 262.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239343.77 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.5 GB in the end (delta: -1.6 GB). Peak memory consumption was 301.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 130). Cancelled while BasicCegarLoop was constructing difference of abstraction (10585states) and FLOYD_HOARE automaton (currently 19 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (2525 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 239.2s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 173.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 667 SDtfs, 11782 SDslu, 698 SDs, 0 SdLazy, 14837 SolverSat, 3687 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 80.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 201 GetRequests, 79 SyntacticMatches, 67 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 53.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10585occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9933531435720991 AbsIntWeakeningRatio, 0.14388489208633093 AbsIntAvgWeakeningVarsNumRemoved, 27.74820143884892 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 6 MinimizatonAttempts, 528 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 807 NumberOfCodeBlocks, 807 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 800 ConstructedInterpolants, 0 QuantifiedInterpolants, 375441 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 209/246 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown