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_label58_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:57:32,965 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:57:32,970 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:57:32,982 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:57:32,982 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:57:32,983 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:57:32,984 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:57:32,986 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:57:32,988 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:57:32,988 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:57:32,989 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:57:32,990 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:57:32,991 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:57:32,992 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:57:32,993 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:57:32,994 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:57:32,995 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:57:32,996 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:57:32,998 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:57:33,000 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:57:33,004 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:57:33,008 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:57:33,010 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:57:33,012 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:57:33,012 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:57:33,013 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:57:33,016 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:57:33,017 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:57:33,018 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:57:33,021 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:57:33,022 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:57:33,023 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 23:57:33,028 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 [2018-10-26 23:57:33,058 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:57:33,059 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:57:33,059 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:57:33,060 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:57:33,061 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:57:33,061 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:57:33,061 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:57:33,061 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:57:33,061 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 23:57:33,062 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:57:33,062 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:57:33,062 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:57:33,063 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:57:33,063 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:57:33,063 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:57:33,064 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:57:33,064 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:57:33,064 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:57:33,064 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:57:33,064 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:57:33,065 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:57:33,065 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:57:33,065 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:57:33,065 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:57:33,065 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:57:33,065 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:57:33,066 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:57:33,066 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:57:33,066 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:57:33,066 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:57:33,066 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:57:33,067 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:57:33,067 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 23:57:33,067 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 23:57:33,113 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:57:33,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:57:33,129 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:57:33,131 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:57:33,131 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:57:33,132 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label58_false-unreach-call_false-termination.c [2018-10-26 23:57:33,203 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fce739f8c/9a987c3bf28a4ee28c5a50203ee3de26/FLAGa9949e17d [2018-10-26 23:57:33,856 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:57:33,857 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label58_false-unreach-call_false-termination.c [2018-10-26 23:57:33,879 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fce739f8c/9a987c3bf28a4ee28c5a50203ee3de26/FLAGa9949e17d [2018-10-26 23:57:33,901 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fce739f8c/9a987c3bf28a4ee28c5a50203ee3de26 [2018-10-26 23:57:33,915 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:57:33,917 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:57:33,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:57:33,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:57:33,922 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:57:33,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:57:33" (1/1) ... [2018-10-26 23:57:33,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11290b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:33, skipping insertion in model container [2018-10-26 23:57:33,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:57:33" (1/1) ... [2018-10-26 23:57:33,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:57:34,024 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:57:34,671 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:57:34,675 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:57:34,845 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:57:34,864 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:57:34,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:34 WrapperNode [2018-10-26 23:57:34,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:57:34,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:57:34,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:57:34,867 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:57:34,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:34" (1/1) ... [2018-10-26 23:57:34,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:34" (1/1) ... [2018-10-26 23:57:35,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:57:35,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:57:35,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:57:35,104 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:57:35,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:34" (1/1) ... [2018-10-26 23:57:35,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:34" (1/1) ... [2018-10-26 23:57:35,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:34" (1/1) ... [2018-10-26 23:57:35,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:34" (1/1) ... [2018-10-26 23:57:35,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:34" (1/1) ... [2018-10-26 23:57:35,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:34" (1/1) ... [2018-10-26 23:57:35,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:34" (1/1) ... [2018-10-26 23:57:35,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:57:35,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:57:35,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:57:35,189 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:57:35,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:34" (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 [2018-10-26 23:57:35,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:57:35,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:57:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 23:57:35,258 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 23:57:35,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:57:35,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:57:35,259 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:57:35,259 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:57:38,769 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:57:38,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:57:38 BoogieIcfgContainer [2018-10-26 23:57:38,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:57:38,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:57:38,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:57:38,775 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:57:38,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:57:33" (1/3) ... [2018-10-26 23:57:38,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edb8343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:57:38, skipping insertion in model container [2018-10-26 23:57:38,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:34" (2/3) ... [2018-10-26 23:57:38,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edb8343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:57:38, skipping insertion in model container [2018-10-26 23:57:38,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:57:38" (3/3) ... [2018-10-26 23:57:38,781 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label58_false-unreach-call_false-termination.c [2018-10-26 23:57:38,792 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:57:38,801 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:57:38,820 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:57:38,861 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:57:38,861 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:57:38,862 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:57:38,862 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:57:38,862 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:57:38,862 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:57:38,862 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:57:38,862 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:57:38,890 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-26 23:57:38,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-26 23:57:38,898 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:57:38,899 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] [2018-10-26 23:57:38,901 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:57:38,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:57:38,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1333191671, now seen corresponding path program 1 times [2018-10-26 23:57:38,911 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:57:38,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:57:38,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:57:38,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:57:38,972 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:57:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:57:39,383 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-26 23:57:39,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:57:39,397 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:57:39,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:57:39,397 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:57:39,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:57:39,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:57:39,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:57:39,427 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-10-26 23:57:42,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:57:42,607 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-10-26 23:57:42,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:57:42,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-10-26 23:57:42,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:57:42,633 INFO L225 Difference]: With dead ends: 894 [2018-10-26 23:57:42,634 INFO L226 Difference]: Without dead ends: 633 [2018-10-26 23:57:42,644 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:57:42,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-10-26 23:57:42,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-10-26 23:57:42,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-10-26 23:57:42,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1007 transitions. [2018-10-26 23:57:42,740 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1007 transitions. Word has length 21 [2018-10-26 23:57:42,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:57:42,741 INFO L481 AbstractCegarLoop]: Abstraction has 633 states and 1007 transitions. [2018-10-26 23:57:42,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:57:42,742 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1007 transitions. [2018-10-26 23:57:42,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-26 23:57:42,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:57:42,750 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:57:42,751 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:57:42,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:57:42,751 INFO L82 PathProgramCache]: Analyzing trace with hash -128001133, now seen corresponding path program 1 times [2018-10-26 23:57:42,752 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:57:42,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:57:42,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:57:42,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:57:42,753 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:57:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:57:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:57:43,063 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:57:43,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:57:43,064 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:57:43,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:57:43,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:57:43,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:57:43,067 INFO L87 Difference]: Start difference. First operand 633 states and 1007 transitions. Second operand 4 states. [2018-10-26 23:57:46,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:57:46,506 INFO L93 Difference]: Finished difference Result 2358 states and 3922 transitions. [2018-10-26 23:57:46,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:57:46,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2018-10-26 23:57:46,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:57:46,520 INFO L225 Difference]: With dead ends: 2358 [2018-10-26 23:57:46,520 INFO L226 Difference]: Without dead ends: 1731 [2018-10-26 23:57:46,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:57:46,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-10-26 23:57:46,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-10-26 23:57:46,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-10-26 23:57:46,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2621 transitions. [2018-10-26 23:57:46,612 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2621 transitions. Word has length 134 [2018-10-26 23:57:46,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:57:46,613 INFO L481 AbstractCegarLoop]: Abstraction has 1731 states and 2621 transitions. [2018-10-26 23:57:46,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:57:46,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2621 transitions. [2018-10-26 23:57:46,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-26 23:57:46,627 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:57:46,627 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:57:46,627 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:57:46,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:57:46,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1381552484, now seen corresponding path program 1 times [2018-10-26 23:57:46,629 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:57:46,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:57:46,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:57:46,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:57:46,631 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:57:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:57:46,945 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:57:46,945 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:57:46,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:57:46,946 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:57:46,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:57:46,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:57:46,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:57:46,951 INFO L87 Difference]: Start difference. First operand 1731 states and 2621 transitions. Second operand 4 states. [2018-10-26 23:57:50,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:57:50,409 INFO L93 Difference]: Finished difference Result 6200 states and 9916 transitions. [2018-10-26 23:57:50,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:57:50,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2018-10-26 23:57:50,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:57:50,453 INFO L225 Difference]: With dead ends: 6200 [2018-10-26 23:57:50,453 INFO L226 Difference]: Without dead ends: 4475 [2018-10-26 23:57:50,479 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:57:50,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2018-10-26 23:57:50,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 4292. [2018-10-26 23:57:50,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4292 states. [2018-10-26 23:57:50,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 6361 transitions. [2018-10-26 23:57:50,646 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 6361 transitions. Word has length 155 [2018-10-26 23:57:50,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:57:50,648 INFO L481 AbstractCegarLoop]: Abstraction has 4292 states and 6361 transitions. [2018-10-26 23:57:50,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:57:50,648 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 6361 transitions. [2018-10-26 23:57:50,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-10-26 23:57:50,663 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:57:50,664 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:57:50,664 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:57:50,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:57:50,664 INFO L82 PathProgramCache]: Analyzing trace with hash 622289172, now seen corresponding path program 1 times [2018-10-26 23:57:50,665 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:57:50,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:57:50,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:57:50,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:57:50,666 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:57:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:57:51,551 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-26 23:57:51,828 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-10-26 23:57:51,998 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2018-10-26 23:57:52,586 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 119 proven. 86 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-26 23:57:52,587 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:57:52,587 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:57:52,588 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 314 with the following transitions: [2018-10-26 23:57:52,591 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [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], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [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], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-26 23:57:52,681 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:57:52,682 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:57:54,097 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:57:56,835 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:57:56,836 INFO L272 AbstractInterpreter]: Visited 137 different actions 137 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-26 23:57:56,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:57:56,849 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:57:59,514 INFO L227 lantSequenceWeakener]: Weakened 302 states. On average, predicates are now at 77.4% of their original sizes. [2018-10-26 23:57:59,514 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:58:00,004 INFO L415 sIntCurrentIteration]: We unified 312 AI predicates to 312 [2018-10-26 23:58:00,004 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:58:00,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:58:00,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2018-10-26 23:58:00,006 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:58:00,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 23:58:00,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 23:58:00,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-26 23:58:00,008 INFO L87 Difference]: Start difference. First operand 4292 states and 6361 transitions. Second operand 7 states. [2018-10-26 23:58:14,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:58:14,810 INFO L93 Difference]: Finished difference Result 8763 states and 12926 transitions. [2018-10-26 23:58:14,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:58:14,810 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 313 [2018-10-26 23:58:14,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:58:14,840 INFO L225 Difference]: With dead ends: 8763 [2018-10-26 23:58:14,840 INFO L226 Difference]: Without dead ends: 4477 [2018-10-26 23:58:14,865 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 313 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:58:14,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4477 states. [2018-10-26 23:58:14,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4477 to 4475. [2018-10-26 23:58:14,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4475 states. [2018-10-26 23:58:15,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4475 states to 4475 states and 6552 transitions. [2018-10-26 23:58:15,011 INFO L78 Accepts]: Start accepts. Automaton has 4475 states and 6552 transitions. Word has length 313 [2018-10-26 23:58:15,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:58:15,012 INFO L481 AbstractCegarLoop]: Abstraction has 4475 states and 6552 transitions. [2018-10-26 23:58:15,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 23:58:15,012 INFO L276 IsEmpty]: Start isEmpty. Operand 4475 states and 6552 transitions. [2018-10-26 23:58:15,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-10-26 23:58:15,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:58:15,028 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:58:15,029 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:58:15,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:58:15,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1980550211, now seen corresponding path program 1 times [2018-10-26 23:58:15,030 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:58:15,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:58:15,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:58:15,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:58:15,033 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:58:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:58:16,077 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 130 proven. 164 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 23:58:16,077 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:58:16,077 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:58:16,077 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 325 with the following transitions: [2018-10-26 23:58:16,078 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [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], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [562], [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], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-26 23:58:16,085 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:58:16,086 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:58:17,519 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:58:24,468 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:58:24,468 INFO L272 AbstractInterpreter]: Visited 140 different actions 273 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-26 23:58:24,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:58:24,476 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:58:28,364 INFO L227 lantSequenceWeakener]: Weakened 104 states. On average, predicates are now at 77.87% of their original sizes. [2018-10-26 23:58:28,365 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:59:17,697 INFO L415 sIntCurrentIteration]: We unified 323 AI predicates to 323 [2018-10-26 23:59:17,697 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:59:17,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:59:17,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [12] total 29 [2018-10-26 23:59:17,698 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:59:17,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-26 23:59:17,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-26 23:59:17,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2018-10-26 23:59:17,699 INFO L87 Difference]: Start difference. First operand 4475 states and 6552 transitions. Second operand 19 states. Received shutdown request... [2018-10-27 00:01:39,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-27 00:01:39,507 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:01:39,512 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:01:39,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:01:39 BoogieIcfgContainer [2018-10-27 00:01:39,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:01:39,513 INFO L168 Benchmark]: Toolchain (without parser) took 245598.09 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 2.3 GB in the end (delta: -833.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-27 00:01:39,515 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. [2018-10-27 00:01:39,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 947.96 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-27 00:01:39,516 INFO L168 Benchmark]: Boogie Procedure Inliner took 237.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -834.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2018-10-27 00:01:39,517 INFO L168 Benchmark]: Boogie Preprocessor took 84.83 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 00:01:39,518 INFO L168 Benchmark]: RCFGBuilder took 3581.95 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: 132.4 MB). Peak memory consumption was 132.4 MB. Max. memory is 7.1 GB. [2018-10-27 00:01:39,519 INFO L168 Benchmark]: TraceAbstraction took 240740.94 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 2.3 GB in the end (delta: -174.5 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-27 00:01:39,526 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 947.96 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 237.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -834.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.83 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3581.95 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: 132.4 MB). Peak memory consumption was 132.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 240740.94 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 2.3 GB in the end (delta: -174.5 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: 46]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 46). Cancelled while BasicCegarLoop was constructing difference of abstraction (4475states) and FLOYD_HOARE automaton (currently 23 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (8113 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 240.6s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 166.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 881 SDtfs, 4797 SDslu, 684 SDs, 0 SdLazy, 5595 SolverSat, 1328 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 659 GetRequests, 563 SyntacticMatches, 60 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 51.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4475occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9958832591578225 AbsIntWeakeningRatio, 0.10078740157480315 AbsIntAvgWeakeningVarsNumRemoved, 494.6503937007874 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 185 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 947 NumberOfCodeBlocks, 947 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 942 ConstructedInterpolants, 0 QuantifiedInterpolants, 3414409 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 354/604 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown