java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label39_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 17:44:53,966 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 17:44:53,969 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 17:44:53,983 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 17:44:53,983 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 17:44:53,985 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 17:44:53,986 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 17:44:53,988 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 17:44:53,990 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 17:44:53,991 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 17:44:53,992 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 17:44:53,992 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 17:44:53,993 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 17:44:53,997 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 17:44:53,998 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 17:44:54,001 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 17:44:54,002 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 17:44:54,008 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 17:44:54,015 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 17:44:54,017 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 17:44:54,021 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 17:44:54,023 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 17:44:54,026 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 17:44:54,026 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 17:44:54,027 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 17:44:54,028 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 17:44:54,030 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 17:44:54,034 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 17:44:54,035 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 17:44:54,036 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 17:44:54,036 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 17:44:54,039 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 17:44:54,039 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 17:44:54,039 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 17:44:54,040 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 17:44:54,041 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 17:44:54,041 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 17:44:54,062 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 17:44:54,062 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 17:44:54,063 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 17:44:54,066 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 17:44:54,066 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 17:44:54,066 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 17:44:54,067 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 17:44:54,067 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 17:44:54,067 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 17:44:54,067 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 17:44:54,067 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 17:44:54,068 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 17:44:54,068 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 17:44:54,069 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 17:44:54,069 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 17:44:54,069 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 17:44:54,069 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 17:44:54,070 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 17:44:54,071 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 17:44:54,071 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 17:44:54,071 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 17:44:54,071 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 17:44:54,071 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 17:44:54,072 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 17:44:54,072 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 17:44:54,072 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 17:44:54,072 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 17:44:54,072 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 17:44:54,073 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 17:44:54,073 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 17:44:54,073 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 17:44:54,074 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 17:44:54,074 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 17:44:54,074 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 17:44:54,074 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 17:44:54,142 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 17:44:54,157 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 17:44:54,162 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 17:44:54,164 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 17:44:54,165 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 17:44:54,165 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label39_false-unreach-call.c [2018-11-07 17:44:54,228 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/219646c71/70534d92b34846d3ab7d2ae6fe0ba1fe/FLAGca9ef1285 [2018-11-07 17:44:54,852 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 17:44:54,853 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label39_false-unreach-call.c [2018-11-07 17:44:54,882 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/219646c71/70534d92b34846d3ab7d2ae6fe0ba1fe/FLAGca9ef1285 [2018-11-07 17:44:54,898 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/219646c71/70534d92b34846d3ab7d2ae6fe0ba1fe [2018-11-07 17:44:54,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 17:44:54,913 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 17:44:54,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 17:44:54,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 17:44:54,918 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 17:44:54,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:44:54" (1/1) ... [2018-11-07 17:44:54,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da72689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:44:54, skipping insertion in model container [2018-11-07 17:44:54,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:44:54" (1/1) ... [2018-11-07 17:44:54,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 17:44:55,011 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 17:44:55,658 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 17:44:55,673 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 17:44:55,872 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 17:44:55,892 INFO L193 MainTranslator]: Completed translation [2018-11-07 17:44:55,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:44:55 WrapperNode [2018-11-07 17:44:55,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 17:44:55,893 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 17:44:55,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 17:44:55,894 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 17:44:55,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:44:55" (1/1) ... [2018-11-07 17:44:56,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:44:55" (1/1) ... [2018-11-07 17:44:56,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 17:44:56,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 17:44:56,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 17:44:56,063 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 17:44:56,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:44:55" (1/1) ... [2018-11-07 17:44:56,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:44:55" (1/1) ... [2018-11-07 17:44:56,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:44:55" (1/1) ... [2018-11-07 17:44:56,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:44:55" (1/1) ... [2018-11-07 17:44:56,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:44:55" (1/1) ... [2018-11-07 17:44:56,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:44:55" (1/1) ... [2018-11-07 17:44:56,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:44:55" (1/1) ... [2018-11-07 17:44:56,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 17:44:56,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 17:44:56,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 17:44:56,214 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 17:44:56,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:44:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 17:44:56,279 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 17:44:56,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 17:44:56,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 17:44:56,279 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 17:44:56,279 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 17:44:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 17:44:56,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 17:44:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 17:44:56,280 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 17:45:00,790 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 17:45:00,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:45:00 BoogieIcfgContainer [2018-11-07 17:45:00,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 17:45:00,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 17:45:00,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 17:45:00,796 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 17:45:00,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:44:54" (1/3) ... [2018-11-07 17:45:00,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6181eec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:45:00, skipping insertion in model container [2018-11-07 17:45:00,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:44:55" (2/3) ... [2018-11-07 17:45:00,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6181eec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:45:00, skipping insertion in model container [2018-11-07 17:45:00,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:45:00" (3/3) ... [2018-11-07 17:45:00,803 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label39_false-unreach-call.c [2018-11-07 17:45:00,813 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 17:45:00,822 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 17:45:00,838 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 17:45:00,878 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 17:45:00,878 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 17:45:00,878 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 17:45:00,878 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 17:45:00,879 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 17:45:00,879 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 17:45:00,879 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 17:45:00,879 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 17:45:00,908 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 17:45:00,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-07 17:45:00,914 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:45:00,915 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:45:00,918 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:45:00,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:45:00,924 INFO L82 PathProgramCache]: Analyzing trace with hash -254580935, now seen corresponding path program 1 times [2018-11-07 17:45:00,927 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:45:00,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:45:00,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:45:00,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:45:00,980 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:45:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:45:01,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:45:01,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:45:01,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 17:45:01,219 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:45:01,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 17:45:01,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 17:45:01,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 17:45:01,240 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-11-07 17:45:03,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:45:03,828 INFO L93 Difference]: Finished difference Result 783 states and 1371 transitions. [2018-11-07 17:45:03,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 17:45:03,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-11-07 17:45:03,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:45:03,850 INFO L225 Difference]: With dead ends: 783 [2018-11-07 17:45:03,851 INFO L226 Difference]: Without dead ends: 488 [2018-11-07 17:45:03,859 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 17:45:03,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2018-11-07 17:45:03,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2018-11-07 17:45:03,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2018-11-07 17:45:03,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 737 transitions. [2018-11-07 17:45:03,952 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 737 transitions. Word has length 17 [2018-11-07 17:45:03,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:45:03,952 INFO L480 AbstractCegarLoop]: Abstraction has 488 states and 737 transitions. [2018-11-07 17:45:03,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 17:45:03,953 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 737 transitions. [2018-11-07 17:45:03,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-11-07 17:45:03,957 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:45:03,958 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 17:45:03,958 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:45:03,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:45:03,959 INFO L82 PathProgramCache]: Analyzing trace with hash -908384725, now seen corresponding path program 1 times [2018-11-07 17:45:03,959 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:45:03,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:45:03,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:45:03,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:45:03,961 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:45:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:45:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:45:04,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:45:04,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 17:45:04,345 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:45:04,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 17:45:04,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 17:45:04,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 17:45:04,349 INFO L87 Difference]: Start difference. First operand 488 states and 737 transitions. Second operand 6 states. [2018-11-07 17:45:08,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:45:08,860 INFO L93 Difference]: Finished difference Result 1564 states and 2506 transitions. [2018-11-07 17:45:08,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 17:45:08,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2018-11-07 17:45:08,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:45:08,870 INFO L225 Difference]: With dead ends: 1564 [2018-11-07 17:45:08,870 INFO L226 Difference]: Without dead ends: 1082 [2018-11-07 17:45:08,873 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 17:45:08,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2018-11-07 17:45:08,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1070. [2018-11-07 17:45:08,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2018-11-07 17:45:08,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1603 transitions. [2018-11-07 17:45:08,928 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1603 transitions. Word has length 90 [2018-11-07 17:45:08,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:45:08,929 INFO L480 AbstractCegarLoop]: Abstraction has 1070 states and 1603 transitions. [2018-11-07 17:45:08,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 17:45:08,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1603 transitions. [2018-11-07 17:45:08,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-11-07 17:45:08,931 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:45:08,932 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 17:45:08,932 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:45:08,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:45:08,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1292382188, now seen corresponding path program 1 times [2018-11-07 17:45:08,933 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:45:08,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:45:08,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:45:08,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:45:08,934 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:45:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:45:09,427 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:45:09,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:45:09,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 17:45:09,427 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:45:09,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 17:45:09,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 17:45:09,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 17:45:09,429 INFO L87 Difference]: Start difference. First operand 1070 states and 1603 transitions. Second operand 7 states. [2018-11-07 17:45:17,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:45:17,315 INFO L93 Difference]: Finished difference Result 2995 states and 4583 transitions. [2018-11-07 17:45:17,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 17:45:17,317 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2018-11-07 17:45:17,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:45:17,333 INFO L225 Difference]: With dead ends: 2995 [2018-11-07 17:45:17,334 INFO L226 Difference]: Without dead ends: 1931 [2018-11-07 17:45:17,340 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-07 17:45:17,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2018-11-07 17:45:17,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 1825. [2018-11-07 17:45:17,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1825 states. [2018-11-07 17:45:17,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2579 transitions. [2018-11-07 17:45:17,425 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2579 transitions. Word has length 91 [2018-11-07 17:45:17,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:45:17,426 INFO L480 AbstractCegarLoop]: Abstraction has 1825 states and 2579 transitions. [2018-11-07 17:45:17,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 17:45:17,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2579 transitions. [2018-11-07 17:45:17,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-07 17:45:17,435 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:45:17,436 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1] [2018-11-07 17:45:17,436 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:45:17,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:45:17,436 INFO L82 PathProgramCache]: Analyzing trace with hash -598381571, now seen corresponding path program 1 times [2018-11-07 17:45:17,437 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:45:17,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:45:17,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:45:17,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:45:17,439 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:45:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:45:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:45:18,369 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:45:18,369 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:45:18,370 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 150 with the following transitions: [2018-11-07 17:45:18,374 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [37], [39], [42], [50], [58], [66], [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], [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], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 17:45:18,446 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:45:18,446 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:45:19,167 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:45:20,348 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:45:20,350 INFO L272 AbstractInterpreter]: Visited 139 different actions 404 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 17:45:20,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:45:20,396 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:45:20,933 INFO L227 lantSequenceWeakener]: Weakened 146 states. On average, predicates are now at 72.94% of their original sizes. [2018-11-07 17:45:20,934 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:45:21,530 INFO L415 sIntCurrentIteration]: We unified 148 AI predicates to 148 [2018-11-07 17:45:21,530 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:45:21,532 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:45:21,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [8] total 19 [2018-11-07 17:45:21,532 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:45:21,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 17:45:21,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 17:45:21,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-11-07 17:45:21,534 INFO L87 Difference]: Start difference. First operand 1825 states and 2579 transitions. Second operand 13 states. [2018-11-07 17:45:49,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:45:49,155 INFO L93 Difference]: Finished difference Result 4420 states and 6147 transitions. [2018-11-07 17:45:49,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 17:45:49,155 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 149 [2018-11-07 17:45:49,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:45:49,166 INFO L225 Difference]: With dead ends: 4420 [2018-11-07 17:45:49,167 INFO L226 Difference]: Without dead ends: 2601 [2018-11-07 17:45:49,172 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 158 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2018-11-07 17:45:49,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2601 states. [2018-11-07 17:45:49,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2601 to 2595. [2018-11-07 17:45:49,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2595 states. [2018-11-07 17:45:49,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2595 states to 2595 states and 3394 transitions. [2018-11-07 17:45:49,235 INFO L78 Accepts]: Start accepts. Automaton has 2595 states and 3394 transitions. Word has length 149 [2018-11-07 17:45:49,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:45:49,236 INFO L480 AbstractCegarLoop]: Abstraction has 2595 states and 3394 transitions. [2018-11-07 17:45:49,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-07 17:45:49,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2595 states and 3394 transitions. [2018-11-07 17:45:49,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-11-07 17:45:49,240 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:45:49,240 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:45:49,241 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:45:49,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:45:49,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1166590572, now seen corresponding path program 1 times [2018-11-07 17:45:49,241 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:45:49,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:45:49,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:45:49,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:45:49,243 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:45:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:45:49,513 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 17:45:49,513 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:45:49,513 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:45:49,513 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 209 with the following transitions: [2018-11-07 17:45:49,514 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [37], [39], [42], [50], [58], [66], [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], [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] [2018-11-07 17:45:49,519 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:45:49,520 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:45:49,698 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:45:49,813 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:45:49,813 INFO L272 AbstractInterpreter]: Visited 125 different actions 244 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 17:45:49,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:45:49,856 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:45:50,201 INFO L227 lantSequenceWeakener]: Weakened 205 states. On average, predicates are now at 72.94% of their original sizes. [2018-11-07 17:45:50,202 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:45:50,608 INFO L415 sIntCurrentIteration]: We unified 207 AI predicates to 207 [2018-11-07 17:45:50,608 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:45:50,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:45:50,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-11-07 17:45:50,609 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:45:50,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 17:45:50,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 17:45:50,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 17:45:50,610 INFO L87 Difference]: Start difference. First operand 2595 states and 3394 transitions. Second operand 10 states. [2018-11-07 17:46:04,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:46:04,477 INFO L93 Difference]: Finished difference Result 4612 states and 6225 transitions. [2018-11-07 17:46:04,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 17:46:04,478 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 208 [2018-11-07 17:46:04,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:46:04,489 INFO L225 Difference]: With dead ends: 4612 [2018-11-07 17:46:04,489 INFO L226 Difference]: Without dead ends: 2793 [2018-11-07 17:46:04,494 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 214 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-11-07 17:46:04,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2793 states. [2018-11-07 17:46:04,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2793 to 2790. [2018-11-07 17:46:04,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2790 states. [2018-11-07 17:46:04,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 3614 transitions. [2018-11-07 17:46:04,554 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 3614 transitions. Word has length 208 [2018-11-07 17:46:04,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:46:04,555 INFO L480 AbstractCegarLoop]: Abstraction has 2790 states and 3614 transitions. [2018-11-07 17:46:04,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 17:46:04,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 3614 transitions. [2018-11-07 17:46:04,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-11-07 17:46:04,558 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:46:04,559 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 17:46:04,559 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:46:04,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:46:04,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1466390173, now seen corresponding path program 1 times [2018-11-07 17:46:04,560 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:46:04,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:46:04,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:46:04,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:46:04,561 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:46:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:46:04,806 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 17:46:04,806 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:46:04,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 17:46:04,807 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:46:04,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 17:46:04,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 17:46:04,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 17:46:04,808 INFO L87 Difference]: Start difference. First operand 2790 states and 3614 transitions. Second operand 4 states. [2018-11-07 17:46:07,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:46:07,281 INFO L93 Difference]: Finished difference Result 5579 states and 7616 transitions. [2018-11-07 17:46:07,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 17:46:07,282 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2018-11-07 17:46:07,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:46:07,294 INFO L225 Difference]: With dead ends: 5579 [2018-11-07 17:46:07,294 INFO L226 Difference]: Without dead ends: 3183 [2018-11-07 17:46:07,302 INFO L604 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 [2018-11-07 17:46:07,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2018-11-07 17:46:07,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 2972. [2018-11-07 17:46:07,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2972 states. [2018-11-07 17:46:07,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 3945 transitions. [2018-11-07 17:46:07,374 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 3945 transitions. Word has length 215 [2018-11-07 17:46:07,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:46:07,374 INFO L480 AbstractCegarLoop]: Abstraction has 2972 states and 3945 transitions. [2018-11-07 17:46:07,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 17:46:07,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 3945 transitions. [2018-11-07 17:46:07,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-11-07 17:46:07,378 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:46:07,379 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:46:07,379 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:46:07,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:46:07,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1748514848, now seen corresponding path program 1 times [2018-11-07 17:46:07,380 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:46:07,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:46:07,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:46:07,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:46:07,381 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:46:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:46:07,890 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 17:46:07,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:46:07,891 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:46:07,891 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-11-07 17:46:07,891 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [37], [39], [42], [50], [58], [66], [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], [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], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 17:46:07,896 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:46:07,897 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:46:07,982 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:46:08,219 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:46:08,219 INFO L272 AbstractInterpreter]: Visited 135 different actions 392 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 17:46:08,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:46:08,226 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:46:08,503 INFO L227 lantSequenceWeakener]: Weakened 215 states. On average, predicates are now at 72.97% of their original sizes. [2018-11-07 17:46:08,503 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:46:08,627 INFO L415 sIntCurrentIteration]: We unified 217 AI predicates to 217 [2018-11-07 17:46:08,627 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:46:08,627 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:46:08,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2018-11-07 17:46:08,627 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:46:08,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 17:46:08,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 17:46:08,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 17:46:08,628 INFO L87 Difference]: Start difference. First operand 2972 states and 3945 transitions. Second operand 11 states. [2018-11-07 17:46:16,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:46:16,753 INFO L93 Difference]: Finished difference Result 5746 states and 7773 transitions. [2018-11-07 17:46:16,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 17:46:16,753 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 218 [2018-11-07 17:46:16,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:46:16,765 INFO L225 Difference]: With dead ends: 5746 [2018-11-07 17:46:16,765 INFO L226 Difference]: Without dead ends: 3362 [2018-11-07 17:46:16,770 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 227 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-11-07 17:46:16,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3362 states. [2018-11-07 17:46:16,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3362 to 3356. [2018-11-07 17:46:16,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3356 states. [2018-11-07 17:46:16,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3356 states to 3356 states and 4391 transitions. [2018-11-07 17:46:16,839 INFO L78 Accepts]: Start accepts. Automaton has 3356 states and 4391 transitions. Word has length 218 [2018-11-07 17:46:16,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:46:16,839 INFO L480 AbstractCegarLoop]: Abstraction has 3356 states and 4391 transitions. [2018-11-07 17:46:16,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 17:46:16,839 INFO L276 IsEmpty]: Start isEmpty. Operand 3356 states and 4391 transitions. [2018-11-07 17:46:16,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-11-07 17:46:16,844 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:46:16,844 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:46:16,844 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:46:16,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:46:16,845 INFO L82 PathProgramCache]: Analyzing trace with hash -2143533651, now seen corresponding path program 1 times [2018-11-07 17:46:16,845 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:46:16,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:46:16,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:46:16,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:46:16,846 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:46:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:46:17,411 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2018-11-07 17:46:17,652 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 17:46:17,652 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:46:17,652 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:46:17,653 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 240 with the following transitions: [2018-11-07 17:46:17,653 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [37], [39], [42], [50], [58], [66], [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], [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], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 17:46:17,657 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:46:17,657 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:46:17,784 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:46:18,807 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:46:18,807 INFO L272 AbstractInterpreter]: Visited 156 different actions 455 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 17:46:18,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:46:18,841 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:46:19,352 INFO L227 lantSequenceWeakener]: Weakened 25 states. On average, predicates are now at 74.23% of their original sizes. [2018-11-07 17:46:19,353 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:46:19,768 INFO L415 sIntCurrentIteration]: We unified 238 AI predicates to 238 [2018-11-07 17:46:19,768 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:46:19,769 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:46:19,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [7] total 26 [2018-11-07 17:46:19,769 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:46:19,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 17:46:19,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 17:46:19,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2018-11-07 17:46:19,771 INFO L87 Difference]: Start difference. First operand 3356 states and 4391 transitions. Second operand 21 states. [2018-11-07 17:46:40,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:46:40,773 INFO L93 Difference]: Finished difference Result 7113 states and 9438 transitions. [2018-11-07 17:46:40,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-07 17:46:40,774 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 239 [2018-11-07 17:46:40,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:46:40,788 INFO L225 Difference]: With dead ends: 7113 [2018-11-07 17:46:40,788 INFO L226 Difference]: Without dead ends: 4343 [2018-11-07 17:46:40,794 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 258 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=314, Invalid=1326, Unknown=0, NotChecked=0, Total=1640 [2018-11-07 17:46:40,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4343 states. [2018-11-07 17:46:40,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4343 to 4324. [2018-11-07 17:46:40,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4324 states. [2018-11-07 17:46:40,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4324 states to 4324 states and 5496 transitions. [2018-11-07 17:46:40,888 INFO L78 Accepts]: Start accepts. Automaton has 4324 states and 5496 transitions. Word has length 239 [2018-11-07 17:46:40,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:46:40,888 INFO L480 AbstractCegarLoop]: Abstraction has 4324 states and 5496 transitions. [2018-11-07 17:46:40,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 17:46:40,888 INFO L276 IsEmpty]: Start isEmpty. Operand 4324 states and 5496 transitions. [2018-11-07 17:46:40,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-11-07 17:46:40,895 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:46:40,895 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:46:40,896 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:46:40,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:46:40,896 INFO L82 PathProgramCache]: Analyzing trace with hash -864973644, now seen corresponding path program 1 times [2018-11-07 17:46:40,896 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:46:40,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:46:40,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:46:40,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:46:40,898 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:46:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:46:41,446 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-11-07 17:46:41,446 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:46:41,446 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:46:41,447 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 263 with the following transitions: [2018-11-07 17:46:41,447 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [37], [39], [42], [50], [58], [66], [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], [506], [507], [511], [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], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [971], [975], [979], [983], [986], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 17:46:41,450 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:46:41,450 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:46:41,678 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:46:42,203 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 17:46:42,204 INFO L272 AbstractInterpreter]: Visited 181 different actions 718 times. Merged at 7 different actions 29 times. Widened at 1 different actions 1 times. Found 4 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 17:46:42,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:46:42,214 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 17:46:42,214 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:46:42,214 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 17:46:42,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:46:42,225 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 17:46:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:46:42,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 17:46:46,409 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-11-07 17:46:46,410 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 17:46:46,812 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-11-07 17:46:46,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 17:46:46,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 9 [2018-11-07 17:46:46,836 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:46:46,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 17:46:46,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 17:46:46,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=47, Unknown=2, NotChecked=0, Total=72 [2018-11-07 17:46:46,837 INFO L87 Difference]: Start difference. First operand 4324 states and 5496 transitions. Second operand 3 states. [2018-11-07 17:46:48,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:46:48,649 INFO L93 Difference]: Finished difference Result 9506 states and 12708 transitions. [2018-11-07 17:46:48,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 17:46:48,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 262 [2018-11-07 17:46:48,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:46:48,671 INFO L225 Difference]: With dead ends: 9506 [2018-11-07 17:46:48,671 INFO L226 Difference]: Without dead ends: 5581 [2018-11-07 17:46:48,700 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 523 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=23, Invalid=47, Unknown=2, NotChecked=0, Total=72 [2018-11-07 17:46:48,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5581 states. [2018-11-07 17:46:48,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5581 to 5328. [2018-11-07 17:46:48,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5328 states. [2018-11-07 17:46:48,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 6989 transitions. [2018-11-07 17:46:48,853 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 6989 transitions. Word has length 262 [2018-11-07 17:46:48,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:46:48,854 INFO L480 AbstractCegarLoop]: Abstraction has 5328 states and 6989 transitions. [2018-11-07 17:46:48,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 17:46:48,854 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 6989 transitions. [2018-11-07 17:46:48,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-11-07 17:46:48,866 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:46:48,866 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-07 17:46:48,866 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:46:48,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:46:48,867 INFO L82 PathProgramCache]: Analyzing trace with hash 893053686, now seen corresponding path program 1 times [2018-11-07 17:46:48,867 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:46:48,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:46:48,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:46:48,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:46:48,871 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:46:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:46:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 43 proven. 219 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-07 17:46:49,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:46:49,589 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:46:49,589 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 306 with the following transitions: [2018-11-07 17:46:49,590 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [37], [39], [42], [50], [58], [66], [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], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 17:46:49,594 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:46:49,595 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:46:49,806 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:46:51,827 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 17:46:51,827 INFO L272 AbstractInterpreter]: Visited 137 different actions 679 times. Merged at 8 different actions 41 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 17:46:51,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:46:51,863 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 17:46:51,864 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:46:51,864 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 17:46:51,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:46:51,876 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 17:46:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:46:51,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 17:46:53,115 WARN L179 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 17:46:53,202 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 17:46:53,202 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 17:46:53,578 WARN L179 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-11-07 17:46:54,421 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 17:46:54,443 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 17:46:54,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 18 [2018-11-07 17:46:54,444 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 17:46:54,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 17:46:54,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 17:46:54,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2018-11-07 17:46:54,446 INFO L87 Difference]: Start difference. First operand 5328 states and 6989 transitions. Second operand 16 states. [2018-11-07 17:47:14,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:47:14,018 INFO L93 Difference]: Finished difference Result 18332 states and 30360 transitions. [2018-11-07 17:47:14,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-11-07 17:47:14,019 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 305 [2018-11-07 17:47:14,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:47:14,094 INFO L225 Difference]: With dead ends: 18332 [2018-11-07 17:47:14,094 INFO L226 Difference]: Without dead ends: 14360 [2018-11-07 17:47:14,133 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 684 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1728, Invalid=8778, Unknown=0, NotChecked=0, Total=10506 [2018-11-07 17:47:14,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14360 states. [2018-11-07 17:47:14,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14360 to 13068. [2018-11-07 17:47:14,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13068 states. [2018-11-07 17:47:14,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13068 states to 13068 states and 18758 transitions. [2018-11-07 17:47:14,611 INFO L78 Accepts]: Start accepts. Automaton has 13068 states and 18758 transitions. Word has length 305 [2018-11-07 17:47:14,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:47:14,612 INFO L480 AbstractCegarLoop]: Abstraction has 13068 states and 18758 transitions. [2018-11-07 17:47:14,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 17:47:14,612 INFO L276 IsEmpty]: Start isEmpty. Operand 13068 states and 18758 transitions. [2018-11-07 17:47:14,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-11-07 17:47:14,629 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:47:14,629 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 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] [2018-11-07 17:47:14,629 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:47:14,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:47:14,630 INFO L82 PathProgramCache]: Analyzing trace with hash -2057198679, now seen corresponding path program 1 times [2018-11-07 17:47:14,630 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:47:14,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:14,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:47:14,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:14,631 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:47:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:47:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 208 proven. 82 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 17:47:15,306 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:47:15,306 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:47:15,306 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 317 with the following transitions: [2018-11-07 17:47:15,306 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [37], [39], [42], [50], [58], [66], [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], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [602], [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] [2018-11-07 17:47:15,312 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:47:15,312 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:47:15,494 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:47:15,952 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:47:15,952 INFO L272 AbstractInterpreter]: Visited 126 different actions 497 times. Merged at 7 different actions 26 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 17:47:15,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:47:15,957 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:47:16,575 INFO L227 lantSequenceWeakener]: Weakened 313 states. On average, predicates are now at 74.93% of their original sizes. [2018-11-07 17:47:16,576 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:47:17,350 INFO L415 sIntCurrentIteration]: We unified 315 AI predicates to 315 [2018-11-07 17:47:17,351 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:47:17,351 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:47:17,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 17:47:17,351 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:47:17,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 17:47:17,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 17:47:17,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 17:47:17,353 INFO L87 Difference]: Start difference. First operand 13068 states and 18758 transitions. Second operand 10 states. [2018-11-07 17:47:31,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:47:31,223 INFO L93 Difference]: Finished difference Result 25221 states and 37230 transitions. [2018-11-07 17:47:31,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 17:47:31,223 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 316 [2018-11-07 17:47:31,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:47:31,276 INFO L225 Difference]: With dead ends: 25221 [2018-11-07 17:47:31,276 INFO L226 Difference]: Without dead ends: 14667 [2018-11-07 17:47:31,303 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 322 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-11-07 17:47:31,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14667 states. [2018-11-07 17:47:31,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14667 to 14153. [2018-11-07 17:47:31,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14153 states. [2018-11-07 17:47:31,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14153 states to 14153 states and 20157 transitions. [2018-11-07 17:47:31,600 INFO L78 Accepts]: Start accepts. Automaton has 14153 states and 20157 transitions. Word has length 316 [2018-11-07 17:47:31,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:47:31,601 INFO L480 AbstractCegarLoop]: Abstraction has 14153 states and 20157 transitions. [2018-11-07 17:47:31,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 17:47:31,601 INFO L276 IsEmpty]: Start isEmpty. Operand 14153 states and 20157 transitions. [2018-11-07 17:47:31,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-11-07 17:47:31,617 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:47:31,618 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 17:47:31,618 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:47:31,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:47:31,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1750656308, now seen corresponding path program 1 times [2018-11-07 17:47:31,618 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:47:31,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:31,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:47:31,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:31,619 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:47:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:47:32,129 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-07 17:47:32,316 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 17:47:32,786 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 17:47:33,169 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 122 proven. 88 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-11-07 17:47:33,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:47:33,170 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:47:33,170 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 327 with the following transitions: [2018-11-07 17:47:33,170 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [37], [39], [42], [50], [58], [66], [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], [555], [559], [563], [567], [570], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [633], [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] [2018-11-07 17:47:33,172 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:47:33,173 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:47:33,243 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:47:33,850 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 17:47:33,850 INFO L272 AbstractInterpreter]: Visited 127 different actions 627 times. Merged at 8 different actions 40 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 17:47:33,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:47:33,857 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 17:47:33,857 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:47:33,857 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 17:47:33,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:47:33,866 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 17:47:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:47:33,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 17:47:34,136 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 212 proven. 8 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-11-07 17:47:34,137 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 17:47:34,319 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 218 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-11-07 17:47:34,339 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 17:47:34,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 14 [2018-11-07 17:47:34,339 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 17:47:34,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 17:47:34,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 17:47:34,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2018-11-07 17:47:34,341 INFO L87 Difference]: Start difference. First operand 14153 states and 20157 transitions. Second operand 13 states. [2018-11-07 17:47:35,158 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2018-11-07 17:47:44,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:47:44,355 INFO L93 Difference]: Finished difference Result 30953 states and 51376 transitions. [2018-11-07 17:47:44,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-07 17:47:44,355 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 326 [2018-11-07 17:47:44,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:47:44,428 INFO L225 Difference]: With dead ends: 30953 [2018-11-07 17:47:44,428 INFO L226 Difference]: Without dead ends: 19122 [2018-11-07 17:47:44,482 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 674 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=600, Invalid=1950, Unknown=0, NotChecked=0, Total=2550 [2018-11-07 17:47:44,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19122 states. [2018-11-07 17:47:44,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19122 to 18406. [2018-11-07 17:47:44,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18406 states. [2018-11-07 17:47:44,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18406 states to 18406 states and 26040 transitions. [2018-11-07 17:47:44,936 INFO L78 Accepts]: Start accepts. Automaton has 18406 states and 26040 transitions. Word has length 326 [2018-11-07 17:47:44,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:47:44,937 INFO L480 AbstractCegarLoop]: Abstraction has 18406 states and 26040 transitions. [2018-11-07 17:47:44,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-07 17:47:44,937 INFO L276 IsEmpty]: Start isEmpty. Operand 18406 states and 26040 transitions. [2018-11-07 17:47:44,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-11-07 17:47:44,957 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:47:44,957 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 17:47:44,958 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:47:44,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:47:44,958 INFO L82 PathProgramCache]: Analyzing trace with hash -327650024, now seen corresponding path program 1 times [2018-11-07 17:47:44,958 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:47:44,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:44,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:47:44,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:44,959 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:47:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:47:45,291 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 220 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-11-07 17:47:45,292 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:47:45,292 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:47:45,292 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 339 with the following transitions: [2018-11-07 17:47:45,292 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [37], [39], [42], [50], [58], [66], [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], [555], [559], [563], [567], [571], [575], [579], [582], [583], [587], [591], [595], [599], [602], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 17:47:45,295 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:47:45,295 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:47:45,379 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:47:46,526 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:47:46,526 INFO L272 AbstractInterpreter]: Visited 141 different actions 828 times. Merged at 7 different actions 37 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 17:47:46,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:47:46,561 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:47:47,418 INFO L227 lantSequenceWeakener]: Weakened 335 states. On average, predicates are now at 73.07% of their original sizes. [2018-11-07 17:47:47,418 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:47:47,563 INFO L415 sIntCurrentIteration]: We unified 337 AI predicates to 337 [2018-11-07 17:47:47,563 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:47:47,564 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:47:47,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-11-07 17:47:47,564 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:47:47,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 17:47:47,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 17:47:47,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-11-07 17:47:47,565 INFO L87 Difference]: Start difference. First operand 18406 states and 26040 transitions. Second operand 13 states. [2018-11-07 17:48:14,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:48:14,903 INFO L93 Difference]: Finished difference Result 34828 states and 50469 transitions. [2018-11-07 17:48:14,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 17:48:14,903 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 338 [2018-11-07 17:48:14,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:48:14,962 INFO L225 Difference]: With dead ends: 34828 [2018-11-07 17:48:14,963 INFO L226 Difference]: Without dead ends: 21037 [2018-11-07 17:48:14,992 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 352 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2018-11-07 17:48:15,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21037 states. [2018-11-07 17:48:15,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21037 to 20956. [2018-11-07 17:48:15,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20956 states. [2018-11-07 17:48:15,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20956 states to 20956 states and 29566 transitions. [2018-11-07 17:48:15,408 INFO L78 Accepts]: Start accepts. Automaton has 20956 states and 29566 transitions. Word has length 338 [2018-11-07 17:48:15,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:48:15,409 INFO L480 AbstractCegarLoop]: Abstraction has 20956 states and 29566 transitions. [2018-11-07 17:48:15,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-07 17:48:15,409 INFO L276 IsEmpty]: Start isEmpty. Operand 20956 states and 29566 transitions. [2018-11-07 17:48:15,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-11-07 17:48:15,431 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:48:15,431 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 17:48:15,432 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:48:15,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:48:15,432 INFO L82 PathProgramCache]: Analyzing trace with hash -558347344, now seen corresponding path program 1 times [2018-11-07 17:48:15,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:48:15,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:48:15,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:48:15,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:48:15,433 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:48:15,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:48:15,881 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 224 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:48:15,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:48:15,881 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:48:15,882 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 340 with the following transitions: [2018-11-07 17:48:15,882 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [37], [39], [42], [50], [58], [66], [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], [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], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [780], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 17:48:15,885 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:48:15,885 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:48:15,955 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:48:16,358 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 17:48:16,358 INFO L272 AbstractInterpreter]: Visited 141 different actions 558 times. Merged at 8 different actions 30 times. Never widened. Found 6 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 17:48:16,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:48:16,365 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 17:48:16,365 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:48:16,365 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 17:48:16,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:48:16,374 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 17:48:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:48:16,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 17:48:16,781 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-07 17:48:16,781 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 17:48:17,194 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-11-07 17:48:18,245 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-07 17:48:18,266 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 17:48:18,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2018-11-07 17:48:18,266 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 17:48:18,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 17:48:18,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 17:48:18,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2018-11-07 17:48:18,268 INFO L87 Difference]: Start difference. First operand 20956 states and 29566 transitions. Second operand 13 states. [2018-11-07 17:48:28,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:48:28,945 INFO L93 Difference]: Finished difference Result 42864 states and 68333 transitions. [2018-11-07 17:48:28,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-11-07 17:48:28,946 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 339 [2018-11-07 17:48:28,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:48:29,009 INFO L225 Difference]: With dead ends: 42864 [2018-11-07 17:48:29,010 INFO L226 Difference]: Without dead ends: 17930 [2018-11-07 17:48:29,083 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 707 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=598, Invalid=2372, Unknown=0, NotChecked=0, Total=2970 [2018-11-07 17:48:29,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17930 states. Received shutdown request... [2018-11-07 17:48:29,192 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 17:48:29,196 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 17:48:29,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:48:29 BoogieIcfgContainer [2018-11-07 17:48:29,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 17:48:29,198 INFO L168 Benchmark]: Toolchain (without parser) took 214287.09 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -613.4 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-07 17:48:29,200 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-11-07 17:48:29,201 INFO L168 Benchmark]: CACSL2BoogieTranslator took 979.23 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-11-07 17:48:29,201 INFO L168 Benchmark]: Boogie Procedure Inliner took 169.38 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -847.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2018-11-07 17:48:29,204 INFO L168 Benchmark]: Boogie Preprocessor took 150.32 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. [2018-11-07 17:48:29,206 INFO L168 Benchmark]: RCFGBuilder took 4577.99 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 187.5 MB). Peak memory consumption was 187.5 MB. Max. memory is 7.1 GB. [2018-11-07 17:48:29,206 INFO L168 Benchmark]: TraceAbstraction took 208404.50 ms. Allocated memory was 2.3 GB in the beginning and 4.5 GB in the end (delta: 2.2 GB). Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: -17.2 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 17:48:29,214 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 979.23 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 169.38 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -847.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 150.32 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 4577.99 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 187.5 MB). Peak memory consumption was 187.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208404.50 ms. Allocated memory was 2.3 GB in the beginning and 4.5 GB in the end (delta: 2.2 GB). Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: -17.2 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 36]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 36). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 208.3s OverallTime, 14 OverallIterations, 4 TraceHistogramMax, 172.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3283 SDtfs, 25445 SDslu, 6176 SDs, 0 SdLazy, 46589 SolverSat, 7143 SolverUnsat, 15 SolverUnknown, 0 SolverNotchecked, 79.9s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 4371 GetRequests, 3996 SyntacticMatches, 10 SemanticMatches, 365 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6059 ImplicationChecksByTransitivity, 18.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20956occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.0s AbstIntTime, 10 AbstIntIterations, 6 AbstIntStrong, 0.997218132912686 AbsIntWeakeningRatio, 0.12038303693570451 AbsIntAvgWeakeningVarsNumRemoved, 22.623803009575923 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 3219 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 15.5s InterpolantComputationTime, 4345 NumberOfCodeBlocks, 4345 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 5555 ConstructedInterpolants, 9 QuantifiedInterpolants, 7284546 SizeOfPredicates, 10 NumberOfNonLiveVariables, 2182 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 22 InterpolantComputations, 5 PerfectInterpolantSequences, 3330/3913 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown