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/Problem17_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 02:04:53,077 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 02:04:53,081 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 02:04:53,100 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 02:04:53,100 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 02:04:53,101 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 02:04:53,103 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 02:04:53,104 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 02:04:53,106 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 02:04:53,107 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 02:04:53,108 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 02:04:53,108 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 02:04:53,109 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 02:04:53,110 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 02:04:53,111 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 02:04:53,114 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 02:04:53,115 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 02:04:53,119 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 02:04:53,124 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 02:04:53,126 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 02:04:53,130 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 02:04:53,131 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 02:04:53,133 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 02:04:53,144 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 02:04:53,144 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 02:04:53,145 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 02:04:53,146 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 02:04:53,146 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 02:04:53,175 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 02:04:53,175 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 02:04:53,176 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 02:04:53,176 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 02:04:53,176 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 02:04:53,176 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 02:04:53,177 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 02:04:53,177 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 02:04:53,177 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 02:04:53,178 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 02:04:53,178 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 02:04:53,178 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 02:04:53,179 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 02:04:53,180 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 02:04:53,180 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 02:04:53,180 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 02:04:53,180 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 02:04:53,181 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 02:04:53,181 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 02:04:53,181 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 02:04:53,181 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 02:04:53,181 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 02:04:53,182 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 02:04:53,183 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 02:04:53,183 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 02:04:53,183 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 02:04:53,184 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 02:04:53,184 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 02:04:53,184 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 02:04:53,184 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 02:04:53,185 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 02:04:53,185 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 02:04:53,185 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 02:04:53,185 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 02:04:53,237 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 02:04:53,260 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 02:04:53,263 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 02:04:53,265 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 02:04:53,265 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 02:04:53,266 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label28_true-unreach-call.c [2018-10-24 02:04:53,329 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/59453d42e/4516e3519f1644f8aab25cf018fd0271/FLAGd08f5a0c9 [2018-10-24 02:04:54,078 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 02:04:54,079 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label28_true-unreach-call.c [2018-10-24 02:04:54,102 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/59453d42e/4516e3519f1644f8aab25cf018fd0271/FLAGd08f5a0c9 [2018-10-24 02:04:54,119 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/59453d42e/4516e3519f1644f8aab25cf018fd0271 [2018-10-24 02:04:54,131 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 02:04:54,133 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 02:04:54,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 02:04:54,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 02:04:54,139 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 02:04:54,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:04:54" (1/1) ... [2018-10-24 02:04:54,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57e1d6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:54, skipping insertion in model container [2018-10-24 02:04:54,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:04:54" (1/1) ... [2018-10-24 02:04:54,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 02:04:54,290 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 02:04:55,258 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:04:55,263 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 02:04:55,680 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:04:55,703 INFO L193 MainTranslator]: Completed translation [2018-10-24 02:04:55,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:55 WrapperNode [2018-10-24 02:04:55,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 02:04:55,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 02:04:55,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 02:04:55,705 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 02:04:55,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:55" (1/1) ... [2018-10-24 02:04:55,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:55" (1/1) ... [2018-10-24 02:04:56,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 02:04:56,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 02:04:56,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 02:04:56,266 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 02:04:56,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:55" (1/1) ... [2018-10-24 02:04:56,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:55" (1/1) ... [2018-10-24 02:04:56,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:55" (1/1) ... [2018-10-24 02:04:56,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:55" (1/1) ... [2018-10-24 02:04:56,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:55" (1/1) ... [2018-10-24 02:04:56,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:55" (1/1) ... [2018-10-24 02:04:56,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:55" (1/1) ... [2018-10-24 02:04:56,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 02:04:56,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 02:04:56,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 02:04:56,587 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 02:04:56,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:55" (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 02:04:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 02:04:56,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 02:04:56,659 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 02:04:56,659 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 02:04:56,659 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 02:04:56,660 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 02:04:56,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 02:04:56,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 02:04:56,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 02:04:56,660 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 02:05:07,825 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 02:05:07,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:05:07 BoogieIcfgContainer [2018-10-24 02:05:07,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 02:05:07,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 02:05:07,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 02:05:07,834 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 02:05:07,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:04:54" (1/3) ... [2018-10-24 02:05:07,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e37e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:05:07, skipping insertion in model container [2018-10-24 02:05:07,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:55" (2/3) ... [2018-10-24 02:05:07,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e37e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:05:07, skipping insertion in model container [2018-10-24 02:05:07,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:05:07" (3/3) ... [2018-10-24 02:05:07,839 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label28_true-unreach-call.c [2018-10-24 02:05:07,849 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 02:05:07,863 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 02:05:07,885 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 02:05:07,941 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 02:05:07,942 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 02:05:07,942 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 02:05:07,942 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 02:05:07,942 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 02:05:07,942 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 02:05:07,943 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 02:05:07,943 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 02:05:07,987 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 02:05:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-24 02:05:07,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:05:07,999 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:05:08,001 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:05:08,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:05:08,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1044962550, now seen corresponding path program 1 times [2018-10-24 02:05:08,011 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:05:08,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:05:08,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:05:08,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:05:08,072 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:05:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:05:08,637 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 02:05:08,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:05:08,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 02:05:08,641 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:05:08,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 02:05:08,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 02:05:08,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 02:05:08,670 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 02:05:19,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:05:19,827 INFO L93 Difference]: Finished difference Result 2133 states and 3959 transitions. [2018-10-24 02:05:19,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 02:05:19,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2018-10-24 02:05:19,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:05:19,863 INFO L225 Difference]: With dead ends: 2133 [2018-10-24 02:05:19,863 INFO L226 Difference]: Without dead ends: 1523 [2018-10-24 02:05:19,881 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 02:05:19,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2018-10-24 02:05:20,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1516. [2018-10-24 02:05:20,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2018-10-24 02:05:20,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2287 transitions. [2018-10-24 02:05:20,077 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2287 transitions. Word has length 71 [2018-10-24 02:05:20,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:05:20,078 INFO L481 AbstractCegarLoop]: Abstraction has 1516 states and 2287 transitions. [2018-10-24 02:05:20,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 02:05:20,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2287 transitions. [2018-10-24 02:05:20,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-24 02:05:20,093 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:05:20,094 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, 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] [2018-10-24 02:05:20,094 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:05:20,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:05:20,096 INFO L82 PathProgramCache]: Analyzing trace with hash 497854657, now seen corresponding path program 1 times [2018-10-24 02:05:20,097 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:05:20,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:05:20,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:05:20,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:05:20,099 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:05:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:05:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:05:20,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:05:20,508 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:05:20,509 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 147 with the following transitions: [2018-10-24 02:05:20,512 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1158], [1166], [1174], [1178], [1180], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 02:05:20,583 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:05:20,584 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:05:22,076 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 02:05:42,701 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 02:05:42,702 INFO L272 AbstractInterpreter]: Visited 83 different actions 544 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 02:05:42,748 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:05:42,749 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 02:05:42,750 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:05:42,750 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 02:05:42,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:05:42,763 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 02:05:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:05:42,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 02:06:11,660 WARN L179 SmtUtils]: Spent 24.27 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-24 02:06:31,975 WARN L179 SmtUtils]: Spent 16.10 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-24 02:06:32,635 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:06:32,635 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 02:06:35,122 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-24 02:06:35,195 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-24 02:06:37,651 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-24 02:06:37,970 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:06:38,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 02:06:38,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-24 02:06:38,003 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:06:38,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:06:38,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:06:38,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=161, Unknown=4, NotChecked=0, Total=210 [2018-10-24 02:06:38,004 INFO L87 Difference]: Start difference. First operand 1516 states and 2287 transitions. Second operand 6 states. [2018-10-24 02:08:12,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:08:12,347 INFO L93 Difference]: Finished difference Result 5736 states and 8906 transitions. [2018-10-24 02:08:12,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 02:08:12,479 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-10-24 02:08:12,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:08:12,515 INFO L225 Difference]: With dead ends: 5736 [2018-10-24 02:08:12,515 INFO L226 Difference]: Without dead ends: 4226 [2018-10-24 02:08:12,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 286 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 54.0s TimeCoverageRelationStatistics Valid=45, Invalid=161, Unknown=4, NotChecked=0, Total=210 [2018-10-24 02:08:12,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2018-10-24 02:08:12,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 4196. [2018-10-24 02:08:12,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4196 states. [2018-10-24 02:08:12,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4196 states to 4196 states and 6162 transitions. [2018-10-24 02:08:12,649 INFO L78 Accepts]: Start accepts. Automaton has 4196 states and 6162 transitions. Word has length 146 [2018-10-24 02:08:12,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:08:12,650 INFO L481 AbstractCegarLoop]: Abstraction has 4196 states and 6162 transitions. [2018-10-24 02:08:12,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:08:12,650 INFO L276 IsEmpty]: Start isEmpty. Operand 4196 states and 6162 transitions. [2018-10-24 02:08:12,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-24 02:08:12,658 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:08:12,658 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, 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] [2018-10-24 02:08:12,659 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:08:12,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:08:12,659 INFO L82 PathProgramCache]: Analyzing trace with hash -977557274, now seen corresponding path program 1 times [2018-10-24 02:08:12,659 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:08:12,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:08:12,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:08:12,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:08:12,661 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:08:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:08:12,945 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:08:12,946 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:08:12,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:08:12,946 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:08:12,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:08:12,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:08:12,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:08:12,948 INFO L87 Difference]: Start difference. First operand 4196 states and 6162 transitions. Second operand 6 states. [2018-10-24 02:08:21,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:08:21,904 INFO L93 Difference]: Finished difference Result 12523 states and 19330 transitions. [2018-10-24 02:08:21,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:08:21,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-10-24 02:08:21,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:08:21,957 INFO L225 Difference]: With dead ends: 12523 [2018-10-24 02:08:21,958 INFO L226 Difference]: Without dead ends: 8333 [2018-10-24 02:08:21,982 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 02:08:21,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8333 states. [2018-10-24 02:08:22,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8333 to 8276. [2018-10-24 02:08:22,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8276 states. [2018-10-24 02:08:22,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8276 states to 8276 states and 11770 transitions. [2018-10-24 02:08:22,240 INFO L78 Accepts]: Start accepts. Automaton has 8276 states and 11770 transitions. Word has length 187 [2018-10-24 02:08:22,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:08:22,241 INFO L481 AbstractCegarLoop]: Abstraction has 8276 states and 11770 transitions. [2018-10-24 02:08:22,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:08:22,241 INFO L276 IsEmpty]: Start isEmpty. Operand 8276 states and 11770 transitions. [2018-10-24 02:08:22,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-24 02:08:22,248 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:08:22,249 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:08:22,249 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:08:22,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:08:22,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1079988822, now seen corresponding path program 1 times [2018-10-24 02:08:22,250 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:08:22,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:08:22,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:08:22,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:08:22,251 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:08:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:08:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:08:22,765 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:08:22,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 02:08:22,765 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:08:22,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 02:08:22,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 02:08:22,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 02:08:22,766 INFO L87 Difference]: Start difference. First operand 8276 states and 11770 transitions. Second operand 7 states. [2018-10-24 02:08:47,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:08:47,350 INFO L93 Difference]: Finished difference Result 24280 states and 40115 transitions. [2018-10-24 02:08:47,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 02:08:47,351 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2018-10-24 02:08:47,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:08:47,518 INFO L225 Difference]: With dead ends: 24280 [2018-10-24 02:08:47,519 INFO L226 Difference]: Without dead ends: 16010 [2018-10-24 02:08:47,608 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 02:08:47,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16010 states. [2018-10-24 02:08:48,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16010 to 15760. [2018-10-24 02:08:48,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15760 states. [2018-10-24 02:08:48,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15760 states to 15760 states and 24055 transitions. [2018-10-24 02:08:48,228 INFO L78 Accepts]: Start accepts. Automaton has 15760 states and 24055 transitions. Word has length 205 [2018-10-24 02:08:48,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:08:48,229 INFO L481 AbstractCegarLoop]: Abstraction has 15760 states and 24055 transitions. [2018-10-24 02:08:48,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 02:08:48,229 INFO L276 IsEmpty]: Start isEmpty. Operand 15760 states and 24055 transitions. [2018-10-24 02:08:48,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-10-24 02:08:48,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:08:48,245 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 02:08:48,245 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:08:48,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:08:48,246 INFO L82 PathProgramCache]: Analyzing trace with hash 327547341, now seen corresponding path program 1 times [2018-10-24 02:08:48,246 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:08:48,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:08:48,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:08:48,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:08:48,247 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:08:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:08:48,562 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:08:48,960 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 129 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-24 02:08:48,960 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:08:48,960 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:08:48,961 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 230 with the following transitions: [2018-10-24 02:08:48,961 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1158], [1166], [1174], [1178], [1180], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1262], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 02:08:48,969 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:08:48,969 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:08:50,141 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 02:09:01,255 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 02:09:01,256 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 02:09:01,256 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 02:09:01,256 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:09:01,256 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 02:09:01,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:09:01,264 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 02:09:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:09:01,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 02:09:01,380 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 02:09:01,581 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 02:09:01,581 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 02:09:01,587 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 02:09:01,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:09:01 BoogieIcfgContainer [2018-10-24 02:09:01,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 02:09:01,589 INFO L168 Benchmark]: Toolchain (without parser) took 247456.96 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 2.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 02:09:01,590 INFO L168 Benchmark]: CDTParser took 0.20 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 02:09:01,591 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1569.79 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-24 02:09:01,592 INFO L168 Benchmark]: Boogie Procedure Inliner took 559.62 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -908.6 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 02:09:01,593 INFO L168 Benchmark]: Boogie Preprocessor took 321.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. [2018-10-24 02:09:01,593 INFO L168 Benchmark]: RCFGBuilder took 11242.47 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 470.1 MB). Peak memory consumption was 470.1 MB. Max. memory is 7.1 GB. [2018-10-24 02:09:01,594 INFO L168 Benchmark]: TraceAbstraction took 233757.53 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 2.4 GB in the end (delta: -749.5 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-24 02:09:01,600 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1569.79 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 559.62 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -908.6 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 321.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11242.47 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 470.1 MB). Peak memory consumption was 470.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233757.53 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 2.4 GB in the end (delta: -749.5 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 200]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 200). Cancelled while BasicCegarLoop was analyzing trace of length 230 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 233.6s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 139.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1147 SDtfs, 7610 SDslu, 1307 SDs, 0 SdLazy, 14633 SolverSat, 4138 SolverUnsat, 34 SolverUnknown, 0 SolverNotchecked, 132.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 327 GetRequests, 295 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 54.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15760occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 34.5s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 344 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 56.3s InterpolantComputationTime, 755 NumberOfCodeBlocks, 755 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 895 ConstructedInterpolants, 145 QuantifiedInterpolants, 2474153 SizeOfPredicates, 3 NumberOfNonLiveVariables, 298 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 196/320 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown