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/Problem15_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:48:33,969 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:48:33,973 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:48:33,990 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:48:33,990 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:48:33,992 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:48:33,993 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:48:33,996 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:48:33,998 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:48:33,999 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:48:34,000 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:48:34,000 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:48:34,001 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:48:34,002 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:48:34,003 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:48:34,004 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:48:34,005 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:48:34,007 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:48:34,009 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:48:34,010 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:48:34,011 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:48:34,012 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:48:34,015 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 01:48:34,015 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 01:48:34,015 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 01:48:34,016 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 01:48:34,017 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 01:48:34,018 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 01:48:34,019 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 01:48:34,020 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 01:48:34,020 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 01:48:34,021 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 01:48:34,021 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 01:48:34,021 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 01:48:34,022 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 01:48:34,023 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 01:48:34,023 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 01:48:34,039 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:48:34,040 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:48:34,041 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:48:34,041 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:48:34,041 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:48:34,041 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:48:34,042 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:48:34,042 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:48:34,042 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:48:34,042 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:48:34,042 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:48:34,042 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:48:34,043 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:48:34,043 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:48:34,044 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:48:34,045 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:48:34,045 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:48:34,045 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:48:34,045 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:48:34,046 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:48:34,046 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:48:34,046 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:48:34,046 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:48:34,046 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:48:34,047 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:48:34,048 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:48:34,048 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:48:34,048 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:48:34,049 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:48:34,049 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:48:34,049 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:48:34,049 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:48:34,050 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:48:34,050 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:48:34,109 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:48:34,121 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:48:34,126 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:48:34,128 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:48:34,128 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:48:34,129 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label57_true-unreach-call.c [2018-10-24 01:48:34,201 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6f9fac087/89397bd6eb4241f38f15336257878255/FLAG22162780f [2018-10-24 01:48:34,893 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:48:34,894 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label57_true-unreach-call.c [2018-10-24 01:48:34,915 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6f9fac087/89397bd6eb4241f38f15336257878255/FLAG22162780f [2018-10-24 01:48:34,930 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6f9fac087/89397bd6eb4241f38f15336257878255 [2018-10-24 01:48:34,941 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:48:34,942 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:48:34,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:48:34,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:48:34,947 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:48:34,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:48:34" (1/1) ... [2018-10-24 01:48:34,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d7ae5c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:34, skipping insertion in model container [2018-10-24 01:48:34,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:48:34" (1/1) ... [2018-10-24 01:48:34,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:48:35,051 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:48:35,831 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:48:35,837 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:48:36,162 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:48:36,186 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:48:36,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:36 WrapperNode [2018-10-24 01:48:36,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:48:36,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:48:36,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:48:36,188 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:48:36,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:36" (1/1) ... [2018-10-24 01:48:36,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:36" (1/1) ... [2018-10-24 01:48:36,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:48:36,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:48:36,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:48:36,602 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:48:36,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:36" (1/1) ... [2018-10-24 01:48:36,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:36" (1/1) ... [2018-10-24 01:48:36,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:36" (1/1) ... [2018-10-24 01:48:36,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:36" (1/1) ... [2018-10-24 01:48:36,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:36" (1/1) ... [2018-10-24 01:48:36,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:36" (1/1) ... [2018-10-24 01:48:36,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:36" (1/1) ... [2018-10-24 01:48:36,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:48:36,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:48:36,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:48:36,806 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:48:36,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:36" (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 01:48:36,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:48:36,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:48:36,883 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 01:48:36,884 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 01:48:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:48:36,884 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:48:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:48:36,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:48:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:48:36,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:48:45,068 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:48:45,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:48:45 BoogieIcfgContainer [2018-10-24 01:48:45,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:48:45,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:48:45,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:48:45,076 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:48:45,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:48:34" (1/3) ... [2018-10-24 01:48:45,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a331a8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:48:45, skipping insertion in model container [2018-10-24 01:48:45,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:36" (2/3) ... [2018-10-24 01:48:45,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a331a8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:48:45, skipping insertion in model container [2018-10-24 01:48:45,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:48:45" (3/3) ... [2018-10-24 01:48:45,080 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label57_true-unreach-call.c [2018-10-24 01:48:45,090 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:48:45,098 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:48:45,116 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:48:45,156 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:48:45,156 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:48:45,156 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:48:45,157 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:48:45,157 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:48:45,157 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:48:45,157 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:48:45,157 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:48:45,201 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 01:48:45,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-24 01:48:45,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:48:45,214 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:48:45,217 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:48:45,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:48:45,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1926433044, now seen corresponding path program 1 times [2018-10-24 01:48:45,227 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:48:45,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:48:45,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:48:45,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:48:45,275 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:48:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:48:45,698 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 01:48:45,700 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:48:45,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:48:45,701 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:48:45,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:48:45,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:48:45,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:48:45,727 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-24 01:48:54,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:48:54,527 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-10-24 01:48:54,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:48:54,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2018-10-24 01:48:54,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:48:54,557 INFO L225 Difference]: With dead ends: 1550 [2018-10-24 01:48:54,557 INFO L226 Difference]: Without dead ends: 1106 [2018-10-24 01:48:54,568 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:48:54,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-10-24 01:48:54,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-10-24 01:48:54,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-10-24 01:48:54,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-10-24 01:48:54,690 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 48 [2018-10-24 01:48:54,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:48:54,691 INFO L481 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-10-24 01:48:54,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:48:54,691 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-10-24 01:48:54,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-24 01:48:54,701 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:48:54,701 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:54,702 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:48:54,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:48:54,702 INFO L82 PathProgramCache]: Analyzing trace with hash -45753950, now seen corresponding path program 1 times [2018-10-24 01:48:54,702 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:48:54,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:48:54,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:48:54,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:48:54,705 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:48:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:48:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:48:55,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:48:55,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:48:55,033 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:48:55,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:48:55,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:48:55,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:48:55,036 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 5 states. [2018-10-24 01:49:02,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:49:02,733 INFO L93 Difference]: Finished difference Result 2245 states and 3758 transitions. [2018-10-24 01:49:02,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:49:02,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-10-24 01:49:02,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:49:02,749 INFO L225 Difference]: With dead ends: 2245 [2018-10-24 01:49:02,749 INFO L226 Difference]: Without dead ends: 1489 [2018-10-24 01:49:02,753 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 01:49:02,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2018-10-24 01:49:02,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1457. [2018-10-24 01:49:02,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-10-24 01:49:02,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-10-24 01:49:02,841 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 121 [2018-10-24 01:49:02,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:49:02,842 INFO L481 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-10-24 01:49:02,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:49:02,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-10-24 01:49:02,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-24 01:49:02,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:49:02,852 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:02,852 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:49:02,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:49:02,853 INFO L82 PathProgramCache]: Analyzing trace with hash 935470738, now seen corresponding path program 1 times [2018-10-24 01:49:02,854 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:49:02,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:49:02,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:49:02,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:49:02,856 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:49:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:49:03,076 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:49:03,076 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:49:03,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:49:03,076 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:49:03,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:49:03,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:49:03,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:49:03,078 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 4 states. [2018-10-24 01:49:09,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:49:09,495 INFO L93 Difference]: Finished difference Result 5394 states and 8283 transitions. [2018-10-24 01:49:09,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:49:09,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2018-10-24 01:49:09,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:49:09,522 INFO L225 Difference]: With dead ends: 5394 [2018-10-24 01:49:09,523 INFO L226 Difference]: Without dead ends: 3943 [2018-10-24 01:49:09,537 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:49:09,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2018-10-24 01:49:09,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 3943. [2018-10-24 01:49:09,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3943 states. [2018-10-24 01:49:09,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3943 states to 3943 states and 5430 transitions. [2018-10-24 01:49:09,651 INFO L78 Accepts]: Start accepts. Automaton has 3943 states and 5430 transitions. Word has length 129 [2018-10-24 01:49:09,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:49:09,652 INFO L481 AbstractCegarLoop]: Abstraction has 3943 states and 5430 transitions. [2018-10-24 01:49:09,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:49:09,653 INFO L276 IsEmpty]: Start isEmpty. Operand 3943 states and 5430 transitions. [2018-10-24 01:49:09,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-24 01:49:09,660 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:49:09,660 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:49:09,660 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:49:09,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:49:09,661 INFO L82 PathProgramCache]: Analyzing trace with hash 107667736, now seen corresponding path program 1 times [2018-10-24 01:49:09,661 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:49:09,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:49:09,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:49:09,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:49:09,662 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:49:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:49:09,962 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:49:10,385 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 82 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 01:49:10,386 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:49:10,386 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:49:10,387 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 216 with the following transitions: [2018-10-24 01:49:10,389 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [633], [638], [640], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 01:49:10,484 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:49:10,485 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:49:12,158 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:49:12,545 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:49:12,547 INFO L272 AbstractInterpreter]: Visited 90 different actions 90 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 01:49:12,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:49:12,570 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:49:14,690 INFO L232 lantSequenceWeakener]: Weakened 205 states. On average, predicates are now at 78.03% of their original sizes. [2018-10-24 01:49:14,690 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:49:15,050 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:49:15,051 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:49:15,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 01:49:15,052 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:49:15,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 01:49:15,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 01:49:15,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 01:49:15,054 INFO L87 Difference]: Start difference. First operand 3943 states and 5430 transitions. Second operand 7 states. [2018-10-24 01:50:17,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:50:17,079 INFO L93 Difference]: Finished difference Result 8190 states and 11236 transitions. [2018-10-24 01:50:17,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:50:17,080 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2018-10-24 01:50:17,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:50:17,101 INFO L225 Difference]: With dead ends: 8190 [2018-10-24 01:50:17,101 INFO L226 Difference]: Without dead ends: 4253 [2018-10-24 01:50:17,120 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:50:17,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4253 states. [2018-10-24 01:50:17,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4253 to 4251. [2018-10-24 01:50:17,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4251 states. [2018-10-24 01:50:17,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4251 states to 4251 states and 5746 transitions. [2018-10-24 01:50:17,231 INFO L78 Accepts]: Start accepts. Automaton has 4251 states and 5746 transitions. Word has length 215 [2018-10-24 01:50:17,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:50:17,232 INFO L481 AbstractCegarLoop]: Abstraction has 4251 states and 5746 transitions. [2018-10-24 01:50:17,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 01:50:17,232 INFO L276 IsEmpty]: Start isEmpty. Operand 4251 states and 5746 transitions. [2018-10-24 01:50:17,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-10-24 01:50:17,241 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:50:17,242 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 01:50:17,242 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:50:17,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:50:17,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1560998385, now seen corresponding path program 1 times [2018-10-24 01:50:17,243 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:50:17,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:50:17,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:50:17,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:50:17,245 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:50:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:50:17,627 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:50:18,107 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 129 proven. 221 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 01:50:18,107 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:50:18,107 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:50:18,108 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 312 with the following transitions: [2018-10-24 01:50:18,108 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 01:50:18,128 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:50:18,128 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:50:18,887 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:50:26,438 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:50:26,438 INFO L272 AbstractInterpreter]: Visited 105 different actions 302 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 01:50:26,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:50:26,467 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:50:30,164 INFO L232 lantSequenceWeakener]: Weakened 102 states. On average, predicates are now at 78.83% of their original sizes. [2018-10-24 01:50:30,164 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:52:12,014 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:52:12,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:52:12,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-10-24 01:52:12,015 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:52:12,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-24 01:52:12,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-24 01:52:12,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2018-10-24 01:52:12,016 INFO L87 Difference]: Start difference. First operand 4251 states and 5746 transitions. Second operand 19 states. Received shutdown request... [2018-10-24 01:52:36,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 01:52:36,489 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:52:36,496 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:52:36,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:52:36 BoogieIcfgContainer [2018-10-24 01:52:36,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:52:36,497 INFO L168 Benchmark]: Toolchain (without parser) took 241555.83 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 373.2 MB. Max. memory is 7.1 GB. [2018-10-24 01:52:36,498 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. [2018-10-24 01:52:36,499 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1244.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:52:36,500 INFO L168 Benchmark]: Boogie Procedure Inliner took 413.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -873.9 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-24 01:52:36,502 INFO L168 Benchmark]: Boogie Preprocessor took 203.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2018-10-24 01:52:36,503 INFO L168 Benchmark]: RCFGBuilder took 8264.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 304.3 MB). Peak memory consumption was 304.3 MB. Max. memory is 7.1 GB. [2018-10-24 01:52:36,504 INFO L168 Benchmark]: TraceAbstraction took 231425.23 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 1.9 GB in the beginning and 3.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 50.3 MB. Max. memory is 7.1 GB. [2018-10-24 01:52:36,510 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1244.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 413.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -873.9 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 203.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8264.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 304.3 MB). Peak memory consumption was 304.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231425.23 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 1.9 GB in the beginning and 3.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 50.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 130). Cancelled while BasicCegarLoop was constructing difference of abstraction (4251states) and FLOYD_HOARE automaton (currently 9 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (67 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 231.3s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 109.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1170 SDtfs, 3792 SDslu, 958 SDs, 0 SdLazy, 6867 SolverSat, 1828 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 62.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 550 GetRequests, 388 SyntacticMatches, 124 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 103.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4251occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9955021296603607 AbsIntWeakeningRatio, 0.11450381679389313 AbsIntAvgWeakeningVarsNumRemoved, 415.3473282442748 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 378 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 824 NumberOfCodeBlocks, 824 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 819 ConstructedInterpolants, 0 QuantifiedInterpolants, 559839 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 316/612 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown