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/Problem11_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:10:22,738 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:10:22,741 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:10:22,759 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:10:22,759 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:10:22,760 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:10:22,764 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:10:22,766 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:10:22,770 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:10:22,771 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:10:22,773 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:10:22,773 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:10:22,774 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:10:22,782 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:10:22,783 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:10:22,784 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:10:22,787 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:10:22,788 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:10:22,790 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:10:22,791 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:10:22,792 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:10:22,794 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:10:22,795 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:10:22,796 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:10:22,796 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:10:22,797 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:10:22,797 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:10:22,798 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:10:22,799 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:10:22,800 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:10:22,800 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:10:22,801 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:10:22,801 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:10:22,801 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:10:22,802 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:10:22,803 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:10:22,803 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 21:10:22,818 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:10:22,819 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:10:22,819 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:10:22,820 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:10:22,820 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:10:22,820 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:10:22,820 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:10:22,821 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:10:22,821 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:10:22,821 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:10:22,821 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:10:22,821 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:10:22,822 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:10:22,822 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:10:22,822 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:10:22,823 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:10:22,823 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:10:22,823 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:10:22,823 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:10:22,824 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:10:22,824 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:10:22,824 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:10:22,824 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:10:22,825 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:10:22,825 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:10:22,825 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:10:22,825 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:10:22,825 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:10:22,826 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:10:22,826 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:10:22,826 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:10:22,826 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:10:22,826 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:10:22,827 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:10:22,869 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:10:22,888 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:10:22,893 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:10:22,895 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:10:22,895 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:10:22,896 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label26_true-unreach-call.c [2018-10-24 21:10:22,973 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8ec639220/5ccd68e5fd6c446db2b3d933245328a9/FLAG5a0737e53 [2018-10-24 21:10:23,586 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:10:23,587 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label26_true-unreach-call.c [2018-10-24 21:10:23,617 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8ec639220/5ccd68e5fd6c446db2b3d933245328a9/FLAG5a0737e53 [2018-10-24 21:10:23,635 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8ec639220/5ccd68e5fd6c446db2b3d933245328a9 [2018-10-24 21:10:23,648 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:10:23,651 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:10:23,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:10:23,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:10:23,657 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:10:23,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:10:23" (1/1) ... [2018-10-24 21:10:23,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@749149db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:23, skipping insertion in model container [2018-10-24 21:10:23,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:10:23" (1/1) ... [2018-10-24 21:10:23,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:10:23,741 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:10:24,381 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:10:24,385 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:10:24,574 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:10:24,594 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:10:24,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:24 WrapperNode [2018-10-24 21:10:24,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:10:24,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:10:24,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:10:24,596 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:10:24,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:24" (1/1) ... [2018-10-24 21:10:24,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:24" (1/1) ... [2018-10-24 21:10:24,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:10:24,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:10:24,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:10:24,846 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:10:24,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:24" (1/1) ... [2018-10-24 21:10:24,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:24" (1/1) ... [2018-10-24 21:10:24,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:24" (1/1) ... [2018-10-24 21:10:24,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:24" (1/1) ... [2018-10-24 21:10:24,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:24" (1/1) ... [2018-10-24 21:10:24,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:24" (1/1) ... [2018-10-24 21:10:24,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:24" (1/1) ... [2018-10-24 21:10:24,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:10:24,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:10:24,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:10:24,970 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:10:24,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:24" (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 21:10:25,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:10:25,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:10:25,039 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:10:25,039 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:10:25,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:10:25,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:10:25,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:10:25,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:10:29,597 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:10:29,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:10:29 BoogieIcfgContainer [2018-10-24 21:10:29,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:10:29,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:10:29,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:10:29,607 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:10:29,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:10:23" (1/3) ... [2018-10-24 21:10:29,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e949777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:10:29, skipping insertion in model container [2018-10-24 21:10:29,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:24" (2/3) ... [2018-10-24 21:10:29,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e949777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:10:29, skipping insertion in model container [2018-10-24 21:10:29,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:10:29" (3/3) ... [2018-10-24 21:10:29,611 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label26_true-unreach-call.c [2018-10-24 21:10:29,621 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:10:29,630 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:10:29,648 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:10:29,687 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:10:29,689 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:10:29,689 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:10:29,689 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:10:29,690 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:10:29,690 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:10:29,690 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:10:29,690 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:10:29,722 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 21:10:29,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-24 21:10:29,732 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:10:29,733 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] [2018-10-24 21:10:29,735 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:10:29,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:10:29,742 INFO L82 PathProgramCache]: Analyzing trace with hash -242196732, now seen corresponding path program 1 times [2018-10-24 21:10:29,745 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:10:29,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:29,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:10:29,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:29,807 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:10:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:10:30,260 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:10:30,378 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 21:10:30,381 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:10:30,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:10:30,381 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:10:30,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:10:30,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:10:30,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:10:30,408 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-10-24 21:10:32,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:10:32,865 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-10-24 21:10:32,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:10:32,869 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2018-10-24 21:10:32,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:10:32,891 INFO L225 Difference]: With dead ends: 782 [2018-10-24 21:10:32,891 INFO L226 Difference]: Without dead ends: 487 [2018-10-24 21:10:32,902 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 21:10:32,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-10-24 21:10:32,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-10-24 21:10:32,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-10-24 21:10:32,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 843 transitions. [2018-10-24 21:10:32,993 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 843 transitions. Word has length 46 [2018-10-24 21:10:32,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:10:32,994 INFO L481 AbstractCegarLoop]: Abstraction has 482 states and 843 transitions. [2018-10-24 21:10:32,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:10:32,995 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 843 transitions. [2018-10-24 21:10:33,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-24 21:10:33,002 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:10:33,002 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:33,003 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:10:33,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:10:33,003 INFO L82 PathProgramCache]: Analyzing trace with hash -567234993, now seen corresponding path program 1 times [2018-10-24 21:10:33,004 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:10:33,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:33,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:10:33,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:33,007 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:10:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:10:33,611 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 21:10:34,050 WARN L179 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-10-24 21:10:34,221 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:10:34,222 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:10:34,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 21:10:34,222 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:10:34,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:10:34,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:10:34,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:10:34,225 INFO L87 Difference]: Start difference. First operand 482 states and 843 transitions. Second operand 7 states. [2018-10-24 21:10:40,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:10:40,674 INFO L93 Difference]: Finished difference Result 1760 states and 3239 transitions. [2018-10-24 21:10:40,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 21:10:40,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2018-10-24 21:10:40,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:10:40,691 INFO L225 Difference]: With dead ends: 1760 [2018-10-24 21:10:40,691 INFO L226 Difference]: Without dead ends: 1284 [2018-10-24 21:10:40,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-24 21:10:40,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2018-10-24 21:10:40,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1037. [2018-10-24 21:10:40,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-10-24 21:10:40,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1685 transitions. [2018-10-24 21:10:40,774 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1685 transitions. Word has length 121 [2018-10-24 21:10:40,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:10:40,775 INFO L481 AbstractCegarLoop]: Abstraction has 1037 states and 1685 transitions. [2018-10-24 21:10:40,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:10:40,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1685 transitions. [2018-10-24 21:10:40,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-24 21:10:40,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:10:40,786 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:10:40,790 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:10:40,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:10:40,790 INFO L82 PathProgramCache]: Analyzing trace with hash -2085119040, now seen corresponding path program 1 times [2018-10-24 21:10:40,790 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:10:40,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:40,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:10:40,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:40,794 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:10:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:10:41,102 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:10:41,156 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 78 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:10:41,156 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:10:41,156 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:10:41,157 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 195 with the following transitions: [2018-10-24 21:10:41,160 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], [269], [271], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:10:41,239 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:10:41,240 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:10:43,148 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:10:43,428 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:10:43,430 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-24 21:10:43,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:10:43,442 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:10:45,726 INFO L232 lantSequenceWeakener]: Weakened 186 states. On average, predicates are now at 73.64% of their original sizes. [2018-10-24 21:10:45,726 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:10:46,210 INFO L413 sIntCurrentIteration]: We have 193 unified AI predicates [2018-10-24 21:10:46,211 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:10:46,212 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:10:46,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 21:10:46,212 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:10:46,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:10:46,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:10:46,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:10:46,214 INFO L87 Difference]: Start difference. First operand 1037 states and 1685 transitions. Second operand 7 states. [2018-10-24 21:11:37,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:11:37,102 INFO L93 Difference]: Finished difference Result 2260 states and 3574 transitions. [2018-10-24 21:11:37,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:11:37,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2018-10-24 21:11:37,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:11:37,109 INFO L225 Difference]: With dead ends: 2260 [2018-10-24 21:11:37,109 INFO L226 Difference]: Without dead ends: 1229 [2018-10-24 21:11:37,114 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 194 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:11:37,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2018-10-24 21:11:37,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1227. [2018-10-24 21:11:37,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2018-10-24 21:11:37,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1883 transitions. [2018-10-24 21:11:37,151 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1883 transitions. Word has length 194 [2018-10-24 21:11:37,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:11:37,152 INFO L481 AbstractCegarLoop]: Abstraction has 1227 states and 1883 transitions. [2018-10-24 21:11:37,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:11:37,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1883 transitions. [2018-10-24 21:11:37,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-24 21:11:37,157 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:11:37,157 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:11:37,157 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:11:37,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:11:37,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1893502118, now seen corresponding path program 1 times [2018-10-24 21:11:37,158 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:11:37,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:11:37,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:11:37,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:11:37,160 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:11:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:11:37,730 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 82 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:11:37,730 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:11:37,731 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:11:37,731 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 239 with the following transitions: [2018-10-24 21:11:37,731 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], [269], [271], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:11:37,739 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:11:37,739 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:11:40,356 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:11:52,819 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:11:52,819 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 21:11:52,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:11:52,828 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:11:56,329 INFO L232 lantSequenceWeakener]: Weakened 106 states. On average, predicates are now at 74.54% of their original sizes. [2018-10-24 21:11:56,330 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:12:08,597 INFO L413 sIntCurrentIteration]: We have 237 unified AI predicates [2018-10-24 21:12:08,597 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:12:08,598 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:12:08,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [10] total 25 [2018-10-24 21:12:08,598 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:12:08,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 21:12:08,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 21:12:08,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2018-10-24 21:12:08,600 INFO L87 Difference]: Start difference. First operand 1227 states and 1883 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 21:14:26,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 21:14:26,846 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:14:26,851 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:14:26,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:14:26 BoogieIcfgContainer [2018-10-24 21:14:26,851 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:14:26,852 INFO L168 Benchmark]: Toolchain (without parser) took 243203.20 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 2.2 GB in the end (delta: -795.5 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 21:14:26,853 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:14:26,854 INFO L168 Benchmark]: CACSL2BoogieTranslator took 943.47 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:14:26,856 INFO L168 Benchmark]: Boogie Procedure Inliner took 249.84 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 692.1 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -784.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:14:26,857 INFO L168 Benchmark]: Boogie Preprocessor took 123.48 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:14:26,857 INFO L168 Benchmark]: RCFGBuilder took 4628.83 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 192.4 MB). Peak memory consumption was 192.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:14:26,858 INFO L168 Benchmark]: TraceAbstraction took 237252.33 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.2 GB in the end (delta: -267.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 21:14:26,863 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 943.47 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 249.84 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 692.1 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -784.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.48 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4628.83 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 192.4 MB). Peak memory consumption was 192.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237252.33 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.2 GB in the end (delta: -267.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 123). Cancelled while BasicCegarLoop was constructing difference of abstraction (1227states) and FLOYD_HOARE automaton (currently 18 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (1064 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 237.1s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 198.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 716 SDtfs, 2785 SDslu, 667 SDs, 0 SdLazy, 4937 SolverSat, 853 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 96.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 456 GetRequests, 415 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 17.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1227occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 17.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9953119232189004 AbsIntWeakeningRatio, 0.13023255813953488 AbsIntAvgWeakeningVarsNumRemoved, 554.9162790697675 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 254 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 599 NumberOfCodeBlocks, 599 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 595 ConstructedInterpolants, 0 QuantifiedInterpolants, 700885 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 204/343 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown