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/Problem14_label33_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:40:30,839 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:40:30,843 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:40:30,861 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:40:30,861 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:40:30,862 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:40:30,864 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:40:30,865 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:40:30,867 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:40:30,868 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:40:30,869 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:40:30,869 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:40:30,870 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:40:30,871 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:40:30,872 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:40:30,873 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:40:30,874 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:40:30,876 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:40:30,877 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:40:30,879 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:40:30,880 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:40:30,881 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:40:30,884 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:40:30,893 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 21:40:30,909 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:40:30,910 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:40:30,911 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:40:30,911 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:40:30,912 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:40:30,912 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:40:30,912 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:40:30,912 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:40:30,913 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:40:30,913 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:40:30,913 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:40:30,913 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:40:30,915 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:40:30,915 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:40:30,915 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:40:30,915 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:40:30,915 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:40:30,916 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:40:30,916 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:40:30,916 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:40:30,916 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:40:30,916 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:40:30,917 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:40:30,918 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:40:30,918 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:40:30,918 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:40:30,918 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:40:30,919 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:40:30,919 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:40:30,919 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:40:30,919 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:40:30,920 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:40:30,920 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:40:30,920 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:40:30,972 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:40:30,985 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:40:30,989 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:40:30,990 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:40:30,991 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:40:30,991 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label33_true-unreach-call_false-termination.c [2018-10-24 21:40:31,053 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/48270a6fc/8cbe965b6dea42f78e9c15bf15bfcaaa/FLAGaf87ea07c [2018-10-24 21:40:31,694 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:40:31,699 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label33_true-unreach-call_false-termination.c [2018-10-24 21:40:31,719 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/48270a6fc/8cbe965b6dea42f78e9c15bf15bfcaaa/FLAGaf87ea07c [2018-10-24 21:40:31,739 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/48270a6fc/8cbe965b6dea42f78e9c15bf15bfcaaa [2018-10-24 21:40:31,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:40:31,756 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:40:31,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:40:31,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:40:31,764 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:40:31,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:40:31" (1/1) ... [2018-10-24 21:40:31,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128929bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:31, skipping insertion in model container [2018-10-24 21:40:31,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:40:31" (1/1) ... [2018-10-24 21:40:31,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:40:31,865 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:40:32,339 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:40:32,344 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:40:32,484 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:40:32,504 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:40:32,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:32 WrapperNode [2018-10-24 21:40:32,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:40:32,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:40:32,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:40:32,506 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:40:32,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:32" (1/1) ... [2018-10-24 21:40:32,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:32" (1/1) ... [2018-10-24 21:40:32,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:40:32,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:40:32,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:40:32,771 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:40:32,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:32" (1/1) ... [2018-10-24 21:40:32,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:32" (1/1) ... [2018-10-24 21:40:32,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:32" (1/1) ... [2018-10-24 21:40:32,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:32" (1/1) ... [2018-10-24 21:40:32,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:32" (1/1) ... [2018-10-24 21:40:32,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:32" (1/1) ... [2018-10-24 21:40:32,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:32" (1/1) ... [2018-10-24 21:40:32,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:40:32,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:40:32,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:40:32,909 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:40:32,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:32" (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 21:40:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:40:32,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:40:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:40:32,978 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:40:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:40:32,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:40:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:40:32,978 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:40:36,716 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:40:36,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:40:36 BoogieIcfgContainer [2018-10-24 21:40:36,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:40:36,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:40:36,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:40:36,726 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:40:36,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:40:31" (1/3) ... [2018-10-24 21:40:36,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5de1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:40:36, skipping insertion in model container [2018-10-24 21:40:36,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:32" (2/3) ... [2018-10-24 21:40:36,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5de1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:40:36, skipping insertion in model container [2018-10-24 21:40:36,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:40:36" (3/3) ... [2018-10-24 21:40:36,731 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label33_true-unreach-call_false-termination.c [2018-10-24 21:40:36,742 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:40:36,751 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:40:36,770 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:40:36,810 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:40:36,810 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:40:36,810 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:40:36,810 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:40:36,811 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:40:36,811 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:40:36,811 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:40:36,811 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:40:36,838 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 21:40:36,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-24 21:40:36,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:40:36,850 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] [2018-10-24 21:40:36,853 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:40:36,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:40:36,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1913036537, now seen corresponding path program 1 times [2018-10-24 21:40:36,863 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:40:36,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:40:36,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:40:36,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:40:36,917 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:40:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:40:37,344 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:40:37,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:40:37,465 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:40:37,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:40:37,466 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:40:37,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:40:37,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:40:37,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:40:37,491 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 21:40:39,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:40:39,130 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 21:40:39,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:40:39,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2018-10-24 21:40:39,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:40:39,156 INFO L225 Difference]: With dead ends: 691 [2018-10-24 21:40:39,156 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 21:40:39,165 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:40:39,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 21:40:39,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 21:40:39,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 21:40:39,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-24 21:40:39,282 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 65 [2018-10-24 21:40:39,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:40:39,283 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-24 21:40:39,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:40:39,283 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-24 21:40:39,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-24 21:40:39,299 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:40:39,300 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:40:39,301 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:40:39,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:40:39,301 INFO L82 PathProgramCache]: Analyzing trace with hash 920993175, now seen corresponding path program 1 times [2018-10-24 21:40:39,301 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:40:39,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:40:39,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:40:39,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:40:39,304 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:40:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:40:39,689 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:40:39,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:40:39,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:40:39,690 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:40:39,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:40:39,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:40:39,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:40:39,693 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-24 21:40:41,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:40:41,779 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-24 21:40:41,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:40:41,780 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-10-24 21:40:41,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:40:41,787 INFO L225 Difference]: With dead ends: 1062 [2018-10-24 21:40:41,787 INFO L226 Difference]: Without dead ends: 634 [2018-10-24 21:40:41,790 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:40:41,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-24 21:40:41,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-24 21:40:41,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-24 21:40:41,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-24 21:40:41,844 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 140 [2018-10-24 21:40:41,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:40:41,845 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-24 21:40:41,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:40:41,845 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-24 21:40:41,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-24 21:40:41,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:40:41,850 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:40:41,850 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:40:41,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:40:41,851 INFO L82 PathProgramCache]: Analyzing trace with hash 409670480, now seen corresponding path program 1 times [2018-10-24 21:40:41,851 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:40:41,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:40:41,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:40:41,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:40:41,853 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:40:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:40:42,419 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:40:42,420 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:40:42,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:40:42,420 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:40:42,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:40:42,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:40:42,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:40:42,422 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 6 states. [2018-10-24 21:40:47,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:40:47,520 INFO L93 Difference]: Finished difference Result 1819 states and 2988 transitions. [2018-10-24 21:40:47,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 21:40:47,522 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-10-24 21:40:47,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:40:47,534 INFO L225 Difference]: With dead ends: 1819 [2018-10-24 21:40:47,534 INFO L226 Difference]: Without dead ends: 1200 [2018-10-24 21:40:47,542 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:40:47,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2018-10-24 21:40:47,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1140. [2018-10-24 21:40:47,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1140 states. [2018-10-24 21:40:47,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1733 transitions. [2018-10-24 21:40:47,593 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1733 transitions. Word has length 149 [2018-10-24 21:40:47,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:40:47,593 INFO L481 AbstractCegarLoop]: Abstraction has 1140 states and 1733 transitions. [2018-10-24 21:40:47,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:40:47,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1733 transitions. [2018-10-24 21:40:47,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-24 21:40:47,601 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:40:47,602 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, 2, 2, 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] [2018-10-24 21:40:47,602 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:40:47,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:40:47,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1226965922, now seen corresponding path program 1 times [2018-10-24 21:40:47,604 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:40:47,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:40:47,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:40:47,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:40:47,606 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:40:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:40:48,162 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 21:40:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:40:48,661 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:40:48,662 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:40:48,663 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 235 with the following transitions: [2018-10-24 21:40:48,665 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [421], [423], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:40:48,730 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:40:48,731 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:40:52,381 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:40:52,386 INFO L272 AbstractInterpreter]: Visited 93 different actions 179 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:40:52,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:40:52,410 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:40:56,062 INFO L232 lantSequenceWeakener]: Weakened 60 states. On average, predicates are now at 79.02% of their original sizes. [2018-10-24 21:40:56,063 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:41:17,787 INFO L413 sIntCurrentIteration]: We have 233 unified AI predicates [2018-10-24 21:41:17,788 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:41:17,789 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:41:17,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 28 [2018-10-24 21:41:17,789 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:41:17,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 21:41:17,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 21:41:17,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-10-24 21:41:17,791 INFO L87 Difference]: Start difference. First operand 1140 states and 1733 transitions. Second operand 18 states. [2018-10-24 21:42:25,159 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:44:19,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:44:19,467 INFO L93 Difference]: Finished difference Result 3350 states and 4982 transitions. [2018-10-24 21:44:19,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 21:44:19,468 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 234 [2018-10-24 21:44:19,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:44:19,478 INFO L225 Difference]: With dead ends: 3350 [2018-10-24 21:44:19,478 INFO L226 Difference]: Without dead ends: 2216 [2018-10-24 21:44:19,483 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 239 GetRequests, 197 SyntacticMatches, 20 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2018-10-24 21:44:19,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2018-10-24 21:44:19,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 2182. [2018-10-24 21:44:19,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2182 states. [2018-10-24 21:44:19,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 2810 transitions. [2018-10-24 21:44:19,665 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 2810 transitions. Word has length 234 [2018-10-24 21:44:19,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:44:19,666 INFO L481 AbstractCegarLoop]: Abstraction has 2182 states and 2810 transitions. [2018-10-24 21:44:19,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-24 21:44:19,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 2810 transitions. [2018-10-24 21:44:19,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-24 21:44:19,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:44:19,673 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, 2, 2, 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] [2018-10-24 21:44:19,674 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:44:19,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:44:19,674 INFO L82 PathProgramCache]: Analyzing trace with hash 656086570, now seen corresponding path program 1 times [2018-10-24 21:44:19,674 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:44:19,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:19,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:44:19,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:19,676 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:44:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:44:20,192 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 21:44:20,410 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 21:44:20,912 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 124 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:44:20,912 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:44:20,912 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:44:20,913 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 271 with the following transitions: [2018-10-24 21:44:20,913 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [421], [423], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [698], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:44:20,924 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:44:20,924 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-24 21:44:21,751 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 21:44:21,752 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 21:44:21,753 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 21:44:21,753 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:44:21,753 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 21:44:21,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:44:21,765 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 21:44:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:44:21,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 21:44:21,907 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 21:44:22,108 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 21:44:22,109 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:44:22,113 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:44:22,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:44:22 BoogieIcfgContainer [2018-10-24 21:44:22,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:44:22,114 INFO L168 Benchmark]: Toolchain (without parser) took 230359.14 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -285.4 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 21:44:22,115 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:44:22,115 INFO L168 Benchmark]: CACSL2BoogieTranslator took 745.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2018-10-24 21:44:22,116 INFO L168 Benchmark]: Boogie Procedure Inliner took 265.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -832.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:44:22,117 INFO L168 Benchmark]: Boogie Preprocessor took 137.56 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:44:22,118 INFO L168 Benchmark]: RCFGBuilder took 3808.55 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: 118.4 MB). Peak memory consumption was 118.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:44:22,119 INFO L168 Benchmark]: TraceAbstraction took 225394.72 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 359.8 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 21:44:22,124 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 745.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 265.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -832.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.56 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3808.55 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: 118.4 MB). Peak memory consumption was 118.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225394.72 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 359.8 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 178]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 178). Cancelled while BasicCegarLoop was analyzing trace of length 271 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 225.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 190.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 517 SDtfs, 4382 SDslu, 479 SDs, 0 SdLazy, 6836 SolverSat, 1164 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 81.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 266 GetRequests, 203 SyntacticMatches, 25 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 23.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2182occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.5s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9949384213472666 AbsIntWeakeningRatio, 0.11158798283261803 AbsIntAvgWeakeningVarsNumRemoved, 313.7424892703863 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 103 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 588 NumberOfCodeBlocks, 588 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 584 ConstructedInterpolants, 0 QuantifiedInterpolants, 1167656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 314/316 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown