java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label19_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 20:57:34,937 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 20:57:34,939 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 20:57:34,956 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 20:57:34,957 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 20:57:34,958 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 20:57:34,960 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 20:57:34,962 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 20:57:34,965 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 20:57:34,965 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 20:57:34,968 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 20:57:34,968 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 20:57:34,970 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 20:57:34,971 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 20:57:34,975 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 20:57:34,981 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 20:57:34,982 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 20:57:34,986 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 20:57:34,990 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 20:57:34,992 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 20:57:34,995 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 20:57:34,997 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 20:57:35,000 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 20:57:35,001 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 20:57:35,001 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 20:57:35,002 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 20:57:35,003 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 20:57:35,004 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 20:57:35,004 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 20:57:35,007 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 20:57:35,007 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 20:57:35,009 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 20:57:35,009 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 20:57:35,010 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 20:57:35,011 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 20:57:35,012 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 20:57:35,012 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 20:57:35,032 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 20:57:35,032 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 20:57:35,033 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 20:57:35,033 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 20:57:35,033 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 20:57:35,034 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 20:57:35,034 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 20:57:35,034 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 20:57:35,034 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 20:57:35,034 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 20:57:35,035 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 20:57:35,035 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 20:57:35,036 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 20:57:35,036 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 20:57:35,036 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 20:57:35,036 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 20:57:35,037 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 20:57:35,037 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 20:57:35,037 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 20:57:35,037 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 20:57:35,037 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 20:57:35,038 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 20:57:35,038 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 20:57:35,038 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 20:57:35,038 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 20:57:35,038 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 20:57:35,039 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 20:57:35,039 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 20:57:35,039 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 20:57:35,039 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 20:57:35,040 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 20:57:35,040 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 20:57:35,040 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 20:57:35,040 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 20:57:35,084 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 20:57:35,096 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 20:57:35,100 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 20:57:35,102 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 20:57:35,102 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 20:57:35,103 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label19_true-unreach-call.c [2018-10-24 20:57:35,163 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c99bcd3f1/0f38beb0366f47a5bf0ae17dc5ab02a7/FLAG2b9244434 [2018-10-24 20:57:35,739 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 20:57:35,740 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label19_true-unreach-call.c [2018-10-24 20:57:35,757 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c99bcd3f1/0f38beb0366f47a5bf0ae17dc5ab02a7/FLAG2b9244434 [2018-10-24 20:57:35,781 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c99bcd3f1/0f38beb0366f47a5bf0ae17dc5ab02a7 [2018-10-24 20:57:35,793 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 20:57:35,796 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 20:57:35,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 20:57:35,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 20:57:35,803 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 20:57:35,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 08:57:35" (1/1) ... [2018-10-24 20:57:35,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@206c1d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:35, skipping insertion in model container [2018-10-24 20:57:35,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 08:57:35" (1/1) ... [2018-10-24 20:57:35,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 20:57:35,886 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 20:57:36,400 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 20:57:36,412 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 20:57:36,603 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 20:57:36,623 INFO L193 MainTranslator]: Completed translation [2018-10-24 20:57:36,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:36 WrapperNode [2018-10-24 20:57:36,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 20:57:36,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 20:57:36,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 20:57:36,625 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 20:57:36,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:36" (1/1) ... [2018-10-24 20:57:36,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:36" (1/1) ... [2018-10-24 20:57:36,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 20:57:36,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 20:57:36,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 20:57:36,866 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 20:57:36,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:36" (1/1) ... [2018-10-24 20:57:36,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:36" (1/1) ... [2018-10-24 20:57:36,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:36" (1/1) ... [2018-10-24 20:57:36,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:36" (1/1) ... [2018-10-24 20:57:36,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:36" (1/1) ... [2018-10-24 20:57:36,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:36" (1/1) ... [2018-10-24 20:57:36,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:36" (1/1) ... [2018-10-24 20:57:36,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 20:57:36,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 20:57:36,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 20:57:36,956 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 20:57:36,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 20:57:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 20:57:37,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 20:57:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 20:57:37,039 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 20:57:37,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 20:57:37,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 20:57:37,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 20:57:37,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 20:57:40,076 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 20:57:40,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 08:57:40 BoogieIcfgContainer [2018-10-24 20:57:40,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 20:57:40,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 20:57:40,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 20:57:40,082 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 20:57:40,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 08:57:35" (1/3) ... [2018-10-24 20:57:40,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4603ef78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 08:57:40, skipping insertion in model container [2018-10-24 20:57:40,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:36" (2/3) ... [2018-10-24 20:57:40,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4603ef78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 08:57:40, skipping insertion in model container [2018-10-24 20:57:40,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 08:57:40" (3/3) ... [2018-10-24 20:57:40,086 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label19_true-unreach-call.c [2018-10-24 20:57:40,097 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 20:57:40,106 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 20:57:40,123 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 20:57:40,162 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 20:57:40,163 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 20:57:40,163 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 20:57:40,163 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 20:57:40,164 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 20:57:40,164 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 20:57:40,164 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 20:57:40,164 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 20:57:40,191 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 20:57:40,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-24 20:57:40,200 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:57:40,201 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 20:57:40,203 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:57:40,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:57:40,210 INFO L82 PathProgramCache]: Analyzing trace with hash -354571332, now seen corresponding path program 1 times [2018-10-24 20:57:40,213 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:57:40,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:57:40,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:57:40,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:57:40,274 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:57:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:57:40,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 20:57:40,587 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 20:57:40,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 20:57:40,588 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:57:40,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 20:57:40,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 20:57:40,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 20:57:40,611 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-24 20:57:42,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 20:57:42,635 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-24 20:57:42,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 20:57:42,637 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2018-10-24 20:57:42,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 20:57:42,656 INFO L225 Difference]: With dead ends: 574 [2018-10-24 20:57:42,656 INFO L226 Difference]: Without dead ends: 356 [2018-10-24 20:57:42,664 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 20:57:42,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-24 20:57:42,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-24 20:57:42,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 20:57:42,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-24 20:57:42,744 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 36 [2018-10-24 20:57:42,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 20:57:42,744 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-24 20:57:42,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 20:57:42,745 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-24 20:57:42,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-24 20:57:42,752 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:57:42,752 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 20:57:42,753 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:57:42,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:57:42,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1266355187, now seen corresponding path program 1 times [2018-10-24 20:57:42,754 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:57:42,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:57:42,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:57:42,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:57:42,755 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:57:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:57:43,135 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 20:57:43,136 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 20:57:43,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 20:57:43,136 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:57:43,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 20:57:43,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 20:57:43,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 20:57:43,141 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-10-24 20:57:46,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 20:57:46,190 INFO L93 Difference]: Finished difference Result 1289 states and 2315 transitions. [2018-10-24 20:57:46,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 20:57:46,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2018-10-24 20:57:46,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 20:57:46,201 INFO L225 Difference]: With dead ends: 1289 [2018-10-24 20:57:46,202 INFO L226 Difference]: Without dead ends: 939 [2018-10-24 20:57:46,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 20:57:46,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2018-10-24 20:57:46,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 926. [2018-10-24 20:57:46,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2018-10-24 20:57:46,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1444 transitions. [2018-10-24 20:57:46,271 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1444 transitions. Word has length 119 [2018-10-24 20:57:46,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 20:57:46,272 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1444 transitions. [2018-10-24 20:57:46,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 20:57:46,272 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1444 transitions. [2018-10-24 20:57:46,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-24 20:57:46,278 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:57:46,278 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 20:57:46,278 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:57:46,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:57:46,279 INFO L82 PathProgramCache]: Analyzing trace with hash 585581779, now seen corresponding path program 1 times [2018-10-24 20:57:46,279 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:57:46,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:57:46,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:57:46,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:57:46,281 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:57:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:57:46,588 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 20:57:46,588 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 20:57:46,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 20:57:46,589 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:57:46,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 20:57:46,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 20:57:46,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 20:57:46,590 INFO L87 Difference]: Start difference. First operand 926 states and 1444 transitions. Second operand 6 states. [2018-10-24 20:57:50,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 20:57:50,356 INFO L93 Difference]: Finished difference Result 2537 states and 4091 transitions. [2018-10-24 20:57:50,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 20:57:50,356 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-10-24 20:57:50,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 20:57:50,368 INFO L225 Difference]: With dead ends: 2537 [2018-10-24 20:57:50,368 INFO L226 Difference]: Without dead ends: 1617 [2018-10-24 20:57:50,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 20:57:50,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2018-10-24 20:57:50,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1586. [2018-10-24 20:57:50,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2018-10-24 20:57:50,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 2321 transitions. [2018-10-24 20:57:50,432 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 2321 transitions. Word has length 135 [2018-10-24 20:57:50,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 20:57:50,433 INFO L481 AbstractCegarLoop]: Abstraction has 1586 states and 2321 transitions. [2018-10-24 20:57:50,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 20:57:50,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 2321 transitions. [2018-10-24 20:57:50,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-24 20:57:50,438 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:57:50,438 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 20:57:50,438 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:57:50,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:57:50,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1699784157, now seen corresponding path program 1 times [2018-10-24 20:57:50,439 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:57:50,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:57:50,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:57:50,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:57:50,441 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:57:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:57:50,678 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 20:57:50,679 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 20:57:50,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 20:57:50,679 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:57:50,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 20:57:50,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 20:57:50,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 20:57:50,681 INFO L87 Difference]: Start difference. First operand 1586 states and 2321 transitions. Second operand 6 states. [2018-10-24 20:57:51,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 20:57:51,875 INFO L93 Difference]: Finished difference Result 3508 states and 5316 transitions. [2018-10-24 20:57:51,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 20:57:51,879 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2018-10-24 20:57:51,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 20:57:51,895 INFO L225 Difference]: With dead ends: 3508 [2018-10-24 20:57:51,895 INFO L226 Difference]: Without dead ends: 1928 [2018-10-24 20:57:51,903 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 20:57:51,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2018-10-24 20:57:51,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1889. [2018-10-24 20:57:51,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1889 states. [2018-10-24 20:57:51,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2675 transitions. [2018-10-24 20:57:51,966 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2675 transitions. Word has length 159 [2018-10-24 20:57:51,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 20:57:51,967 INFO L481 AbstractCegarLoop]: Abstraction has 1889 states and 2675 transitions. [2018-10-24 20:57:51,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 20:57:51,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2675 transitions. [2018-10-24 20:57:51,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-24 20:57:51,973 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:57:51,973 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 20:57:51,974 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:57:51,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:57:51,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1084822497, now seen corresponding path program 1 times [2018-10-24 20:57:51,974 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:57:51,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:57:51,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:57:51,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:57:51,976 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:57:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:57:52,658 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 20:57:52,659 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 20:57:52,659 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 20:57:52,660 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 200 with the following transitions: [2018-10-24 20:57:52,662 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [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], [534], [535], [539], [543], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 20:57:52,747 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 20:57:52,748 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 20:57:55,102 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 20:58:07,531 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 20:58:07,533 INFO L272 AbstractInterpreter]: Visited 91 different actions 516 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 20:58:07,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:58:07,565 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 20:58:10,505 INFO L232 lantSequenceWeakener]: Weakened 14 states. On average, predicates are now at 77.27% of their original sizes. [2018-10-24 20:58:10,506 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 20:58:37,604 INFO L413 sIntCurrentIteration]: We have 198 unified AI predicates [2018-10-24 20:58:37,605 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 20:58:37,605 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 20:58:37,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [12] total 27 [2018-10-24 20:58:37,606 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:58:37,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 20:58:37,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 20:58:37,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-10-24 20:58:37,607 INFO L87 Difference]: Start difference. First operand 1889 states and 2675 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 21:01:44,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-24 21:01:44,492 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:01:44,497 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:01:44,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:01:44 BoogieIcfgContainer [2018-10-24 21:01:44,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:01:44,499 INFO L168 Benchmark]: Toolchain (without parser) took 248704.83 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -856.4 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 21:01:44,501 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:01:44,501 INFO L168 Benchmark]: CACSL2BoogieTranslator took 826.69 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:01:44,502 INFO L168 Benchmark]: Boogie Procedure Inliner took 240.55 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: -817.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:01:44,503 INFO L168 Benchmark]: Boogie Preprocessor took 90.00 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:01:44,504 INFO L168 Benchmark]: RCFGBuilder took 3121.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.8 MB). Peak memory consumption was 119.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:01:44,505 INFO L168 Benchmark]: TraceAbstraction took 244419.26 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -190.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 21:01:44,510 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 826.69 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 240.55 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: -817.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.00 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 3121.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.8 MB). Peak memory consumption was 119.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 244419.26 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -190.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 91). Cancelled while BasicCegarLoop was constructing difference of abstraction (1889states) and FLOYD_HOARE automaton (currently 22 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (4037 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 244.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 197.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 532 SDtfs, 4547 SDslu, 495 SDs, 0 SdLazy, 5327 SolverSat, 1153 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 105.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 238 GetRequests, 161 SyntacticMatches, 35 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 28.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1889occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9940436978480458 AbsIntWeakeningRatio, 0.13131313131313133 AbsIntAvgWeakeningVarsNumRemoved, 216.72222222222223 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 83 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 648 NumberOfCodeBlocks, 648 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 643 ConstructedInterpolants, 0 QuantifiedInterpolants, 784468 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 223/225 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown