java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label50_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 16:58:51,905 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 16:58:51,907 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 16:58:51,919 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 16:58:51,920 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 16:58:51,921 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 16:58:51,922 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 16:58:51,924 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 16:58:51,926 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 16:58:51,927 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 16:58:51,928 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 16:58:51,929 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 16:58:51,930 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 16:58:51,931 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 16:58:51,932 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 16:58:51,933 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 16:58:51,934 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 16:58:51,936 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 16:58:51,938 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 16:58:51,940 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 16:58:51,941 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 16:58:51,943 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 16:58:51,945 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 16:58:51,946 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 16:58:51,946 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 16:58:51,947 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 16:58:51,948 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 16:58:51,949 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 16:58:51,950 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 16:58:51,951 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 16:58:51,951 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 16:58:51,952 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 16:58:51,953 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 16:58:51,953 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 16:58:51,954 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 16:58:51,955 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 16:58:51,955 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 16:58:51,972 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 16:58:51,972 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 16:58:51,973 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 16:58:51,973 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 16:58:51,973 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 16:58:51,974 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 16:58:51,974 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 16:58:51,974 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 16:58:51,974 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 16:58:51,975 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 16:58:51,975 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 16:58:51,975 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 16:58:51,975 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 16:58:51,976 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 16:58:51,976 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 16:58:51,977 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 16:58:51,977 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 16:58:51,977 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 16:58:51,977 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 16:58:51,978 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 16:58:51,978 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 16:58:51,978 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 16:58:51,978 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 16:58:51,978 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 16:58:51,979 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 16:58:51,979 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 16:58:51,979 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 16:58:51,979 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 16:58:51,980 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 16:58:51,980 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 16:58:51,980 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 16:58:51,980 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 16:58:51,980 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 16:58:51,981 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 16:58:51,981 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 16:58:52,025 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 16:58:52,038 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 16:58:52,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 16:58:52,043 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 16:58:52,044 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 16:58:52,045 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label50_false-unreach-call.c [2018-11-07 16:58:52,104 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58703c982/7bfe4292fb8443e08305fe805ee7c184/FLAG7db424792 [2018-11-07 16:58:52,765 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 16:58:52,767 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label50_false-unreach-call.c [2018-11-07 16:58:52,789 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58703c982/7bfe4292fb8443e08305fe805ee7c184/FLAG7db424792 [2018-11-07 16:58:52,810 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58703c982/7bfe4292fb8443e08305fe805ee7c184 [2018-11-07 16:58:52,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 16:58:52,824 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 16:58:52,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 16:58:52,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 16:58:52,832 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 16:58:52,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:58:52" (1/1) ... [2018-11-07 16:58:52,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56927dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:52, skipping insertion in model container [2018-11-07 16:58:52,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:58:52" (1/1) ... [2018-11-07 16:58:52,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 16:58:52,961 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 16:58:53,726 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 16:58:53,732 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 16:58:54,032 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 16:58:54,056 INFO L193 MainTranslator]: Completed translation [2018-11-07 16:58:54,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:54 WrapperNode [2018-11-07 16:58:54,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 16:58:54,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 16:58:54,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 16:58:54,058 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 16:58:54,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:54" (1/1) ... [2018-11-07 16:58:54,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:54" (1/1) ... [2018-11-07 16:58:54,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 16:58:54,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 16:58:54,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 16:58:54,283 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 16:58:54,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:54" (1/1) ... [2018-11-07 16:58:54,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:54" (1/1) ... [2018-11-07 16:58:54,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:54" (1/1) ... [2018-11-07 16:58:54,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:54" (1/1) ... [2018-11-07 16:58:54,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:54" (1/1) ... [2018-11-07 16:58:54,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:54" (1/1) ... [2018-11-07 16:58:54,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:54" (1/1) ... [2018-11-07 16:58:54,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 16:58:54,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 16:58:54,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 16:58:54,433 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 16:58:54,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 16:58:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 16:58:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 16:58:54,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 16:58:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 16:58:54,519 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 16:58:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 16:58:54,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 16:58:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 16:58:54,519 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 16:59:00,083 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 16:59:00,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:59:00 BoogieIcfgContainer [2018-11-07 16:59:00,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 16:59:00,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 16:59:00,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 16:59:00,091 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 16:59:00,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:58:52" (1/3) ... [2018-11-07 16:59:00,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7843be26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:59:00, skipping insertion in model container [2018-11-07 16:59:00,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:58:54" (2/3) ... [2018-11-07 16:59:00,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7843be26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:59:00, skipping insertion in model container [2018-11-07 16:59:00,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:59:00" (3/3) ... [2018-11-07 16:59:00,098 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label50_false-unreach-call.c [2018-11-07 16:59:00,109 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 16:59:00,124 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 16:59:00,143 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 16:59:00,191 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 16:59:00,191 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 16:59:00,192 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 16:59:00,192 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 16:59:00,192 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 16:59:00,192 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 16:59:00,192 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 16:59:00,193 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 16:59:00,240 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 16:59:00,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-11-07 16:59:00,269 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:59:00,270 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:59:00,275 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:59:00,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:59:00,282 INFO L82 PathProgramCache]: Analyzing trace with hash -919823164, now seen corresponding path program 1 times [2018-11-07 16:59:00,285 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:59:00,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:59:00,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:59:00,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:59:00,349 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:59:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:59:01,266 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 16:59:01,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 16:59:01,630 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 16:59:01,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 16:59:01,631 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:59:01,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 16:59:01,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 16:59:01,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 16:59:01,659 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-11-07 16:59:05,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:59:05,134 INFO L93 Difference]: Finished difference Result 1080 states and 1936 transitions. [2018-11-07 16:59:05,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 16:59:05,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2018-11-07 16:59:05,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:59:05,159 INFO L225 Difference]: With dead ends: 1080 [2018-11-07 16:59:05,159 INFO L226 Difference]: Without dead ends: 762 [2018-11-07 16:59:05,167 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 16:59:05,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2018-11-07 16:59:05,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 520. [2018-11-07 16:59:05,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-11-07 16:59:05,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 919 transitions. [2018-11-07 16:59:05,289 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 919 transitions. Word has length 161 [2018-11-07 16:59:05,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:59:05,290 INFO L480 AbstractCegarLoop]: Abstraction has 520 states and 919 transitions. [2018-11-07 16:59:05,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 16:59:05,293 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 919 transitions. [2018-11-07 16:59:05,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-11-07 16:59:05,311 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:59:05,312 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:59:05,312 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:59:05,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:59:05,313 INFO L82 PathProgramCache]: Analyzing trace with hash 942984968, now seen corresponding path program 1 times [2018-11-07 16:59:05,313 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:59:05,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:59:05,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:59:05,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:59:05,315 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:59:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:59:05,670 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 16:59:05,928 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-07 16:59:06,078 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 16:59:06,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 16:59:06,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 16:59:06,079 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:59:06,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 16:59:06,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 16:59:06,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 16:59:06,083 INFO L87 Difference]: Start difference. First operand 520 states and 919 transitions. Second operand 7 states. [2018-11-07 16:59:06,343 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-07 16:59:10,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:59:10,308 INFO L93 Difference]: Finished difference Result 1609 states and 2945 transitions. [2018-11-07 16:59:10,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 16:59:10,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 178 [2018-11-07 16:59:10,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:59:10,327 INFO L225 Difference]: With dead ends: 1609 [2018-11-07 16:59:10,327 INFO L226 Difference]: Without dead ends: 1095 [2018-11-07 16:59:10,333 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-07 16:59:10,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2018-11-07 16:59:10,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1030. [2018-11-07 16:59:10,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1030 states. [2018-11-07 16:59:10,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1816 transitions. [2018-11-07 16:59:10,441 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1816 transitions. Word has length 178 [2018-11-07 16:59:10,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:59:10,442 INFO L480 AbstractCegarLoop]: Abstraction has 1030 states and 1816 transitions. [2018-11-07 16:59:10,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 16:59:10,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1816 transitions. [2018-11-07 16:59:10,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-11-07 16:59:10,451 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:59:10,452 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:59:10,452 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:59:10,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:59:10,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1192010291, now seen corresponding path program 1 times [2018-11-07 16:59:10,453 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:59:10,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:59:10,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:59:10,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:59:10,455 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:59:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:59:10,752 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 16:59:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 16:59:10,908 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 16:59:10,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 16:59:10,908 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:59:10,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 16:59:10,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 16:59:10,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 16:59:10,910 INFO L87 Difference]: Start difference. First operand 1030 states and 1816 transitions. Second operand 6 states. [2018-11-07 16:59:14,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:59:14,106 INFO L93 Difference]: Finished difference Result 3134 states and 5772 transitions. [2018-11-07 16:59:14,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 16:59:14,108 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 179 [2018-11-07 16:59:14,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:59:14,133 INFO L225 Difference]: With dead ends: 3134 [2018-11-07 16:59:14,133 INFO L226 Difference]: Without dead ends: 2110 [2018-11-07 16:59:14,138 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 16:59:14,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2018-11-07 16:59:14,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2036. [2018-11-07 16:59:14,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2036 states. [2018-11-07 16:59:14,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 3605 transitions. [2018-11-07 16:59:14,220 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 3605 transitions. Word has length 179 [2018-11-07 16:59:14,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:59:14,220 INFO L480 AbstractCegarLoop]: Abstraction has 2036 states and 3605 transitions. [2018-11-07 16:59:14,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 16:59:14,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 3605 transitions. [2018-11-07 16:59:14,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-11-07 16:59:14,228 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:59:14,228 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:59:14,228 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:59:14,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:59:14,229 INFO L82 PathProgramCache]: Analyzing trace with hash 602837679, now seen corresponding path program 1 times [2018-11-07 16:59:14,229 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:59:14,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:59:14,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:59:14,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:59:14,230 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:59:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:59:14,499 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 16:59:14,575 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 16:59:14,576 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 16:59:14,576 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 16:59:14,577 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 189 with the following transitions: [2018-11-07 16:59:14,580 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [749], [751], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 16:59:14,643 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 16:59:14,644 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 16:59:16,138 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 16:59:16,140 INFO L272 AbstractInterpreter]: Visited 162 different actions 162 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 16:59:16,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:59:16,192 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 16:59:17,487 INFO L227 lantSequenceWeakener]: Weakened 179 states. On average, predicates are now at 70.86% of their original sizes. [2018-11-07 16:59:17,488 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 16:59:19,454 INFO L415 sIntCurrentIteration]: We unified 187 AI predicates to 187 [2018-11-07 16:59:19,454 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 16:59:19,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 16:59:19,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-11-07 16:59:19,456 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:59:19,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 16:59:19,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 16:59:19,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2018-11-07 16:59:19,458 INFO L87 Difference]: Start difference. First operand 2036 states and 3605 transitions. Second operand 21 states. [2018-11-07 17:00:11,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:00:11,670 INFO L93 Difference]: Finished difference Result 4276 states and 7590 transitions. [2018-11-07 17:00:11,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 17:00:11,670 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 188 [2018-11-07 17:00:11,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:00:11,682 INFO L225 Difference]: With dead ends: 4276 [2018-11-07 17:00:11,682 INFO L226 Difference]: Without dead ends: 2246 [2018-11-07 17:00:11,688 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 190 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2018-11-07 17:00:11,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2018-11-07 17:00:11,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2244. [2018-11-07 17:00:11,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2244 states. [2018-11-07 17:00:11,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 3822 transitions. [2018-11-07 17:00:11,745 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 3822 transitions. Word has length 188 [2018-11-07 17:00:11,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:00:11,745 INFO L480 AbstractCegarLoop]: Abstraction has 2244 states and 3822 transitions. [2018-11-07 17:00:11,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 17:00:11,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 3822 transitions. [2018-11-07 17:00:11,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-11-07 17:00:11,752 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:00:11,752 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:00:11,753 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:00:11,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:00:11,753 INFO L82 PathProgramCache]: Analyzing trace with hash -679713230, now seen corresponding path program 1 times [2018-11-07 17:00:11,753 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:00:11,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:00:11,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:00:11,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:00:11,755 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:00:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:00:12,033 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 17:00:12,973 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 21 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 17:00:12,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:00:12,973 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:00:12,974 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 201 with the following transitions: [2018-11-07 17:00:12,975 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [24], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [749], [751], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 17:00:12,987 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:00:12,987 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:00:14,756 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:00:14,756 INFO L272 AbstractInterpreter]: Visited 166 different actions 328 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 17:00:14,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:00:14,766 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:00:16,037 INFO L227 lantSequenceWeakener]: Weakened 65 states. On average, predicates are now at 73.01% of their original sizes. [2018-11-07 17:00:16,038 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:00:22,151 INFO L415 sIntCurrentIteration]: We unified 199 AI predicates to 199 [2018-11-07 17:00:22,152 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:00:22,152 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:00:22,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [27] imperfect sequences [9] total 34 [2018-11-07 17:00:22,153 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:00:22,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-07 17:00:22,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-07 17:00:22,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2018-11-07 17:00:22,156 INFO L87 Difference]: Start difference. First operand 2244 states and 3822 transitions. Second operand 27 states. [2018-11-07 17:00:50,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:00:50,638 INFO L93 Difference]: Finished difference Result 4488 states and 7812 transitions. [2018-11-07 17:00:50,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 17:00:50,638 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 200 [2018-11-07 17:00:50,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:00:50,650 INFO L225 Difference]: With dead ends: 4488 [2018-11-07 17:00:50,650 INFO L226 Difference]: Without dead ends: 2458 [2018-11-07 17:00:50,656 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 207 GetRequests, 125 SyntacticMatches, 49 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2018-11-07 17:00:50,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2018-11-07 17:00:50,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 2455. [2018-11-07 17:00:50,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2455 states. [2018-11-07 17:00:50,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4048 transitions. [2018-11-07 17:00:50,726 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4048 transitions. Word has length 200 [2018-11-07 17:00:50,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:00:50,727 INFO L480 AbstractCegarLoop]: Abstraction has 2455 states and 4048 transitions. [2018-11-07 17:00:50,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-11-07 17:00:50,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4048 transitions. [2018-11-07 17:00:50,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-11-07 17:00:50,734 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:00:50,734 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:00:50,734 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:00:50,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:00:50,735 INFO L82 PathProgramCache]: Analyzing trace with hash 2132858967, now seen corresponding path program 1 times [2018-11-07 17:00:50,735 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:00:50,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:00:50,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:00:50,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:00:50,736 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:00:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:00:51,243 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:00:51,243 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:00:51,244 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:00:51,244 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 201 with the following transitions: [2018-11-07 17:00:51,244 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [749], [751], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 17:00:51,250 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:00:51,251 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:00:52,910 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:00:52,910 INFO L272 AbstractInterpreter]: Visited 165 different actions 323 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 17:00:52,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:00:52,917 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:00:53,725 INFO L227 lantSequenceWeakener]: Weakened 197 states. On average, predicates are now at 70.71% of their original sizes. [2018-11-07 17:00:53,726 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:00:53,977 INFO L415 sIntCurrentIteration]: We unified 199 AI predicates to 199 [2018-11-07 17:00:53,977 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:00:53,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:00:53,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-07 17:00:53,978 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:00:53,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 17:00:53,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 17:00:53,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-11-07 17:00:53,979 INFO L87 Difference]: Start difference. First operand 2455 states and 4048 transitions. Second operand 17 states. [2018-11-07 17:01:55,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:01:55,778 INFO L93 Difference]: Finished difference Result 6709 states and 11973 transitions. [2018-11-07 17:01:55,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 17:01:55,778 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 200 [2018-11-07 17:01:55,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:01:55,801 INFO L225 Difference]: With dead ends: 6709 [2018-11-07 17:01:55,802 INFO L226 Difference]: Without dead ends: 4679 [2018-11-07 17:01:55,812 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 208 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2018-11-07 17:01:55,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4679 states. [2018-11-07 17:01:55,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4679 to 4672. [2018-11-07 17:01:55,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4672 states. [2018-11-07 17:01:55,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4672 states to 4672 states and 6826 transitions. [2018-11-07 17:01:55,947 INFO L78 Accepts]: Start accepts. Automaton has 4672 states and 6826 transitions. Word has length 200 [2018-11-07 17:01:55,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:01:55,947 INFO L480 AbstractCegarLoop]: Abstraction has 4672 states and 6826 transitions. [2018-11-07 17:01:55,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 17:01:55,948 INFO L276 IsEmpty]: Start isEmpty. Operand 4672 states and 6826 transitions. [2018-11-07 17:01:55,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-11-07 17:01:55,959 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:01:55,959 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:01:55,959 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:01:55,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:01:55,960 INFO L82 PathProgramCache]: Analyzing trace with hash 901719322, now seen corresponding path program 1 times [2018-11-07 17:01:55,960 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:01:55,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:01:55,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:01:55,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:01:55,961 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:01:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:01:56,237 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 17:01:56,514 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 48 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 17:01:56,514 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:01:56,515 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:01:56,515 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-11-07 17:01:56,515 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [749], [751], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 17:01:56,520 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:01:56,520 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:01:59,021 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 17:01:59,021 INFO L272 AbstractInterpreter]: Visited 167 different actions 497 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 17:01:59,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:01:59,027 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 17:01:59,027 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:01:59,027 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 17:01:59,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:01:59,036 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 17:01:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:01:59,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 17:01:59,618 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-07 17:01:59,618 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 17:01:59,843 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 17:02:00,270 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 57 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-07 17:02:00,293 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 17:02:00,293 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-11-07 17:02:00,293 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 17:02:00,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 17:02:00,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 17:02:00,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-11-07 17:02:00,295 INFO L87 Difference]: Start difference. First operand 4672 states and 6826 transitions. Second operand 12 states. [2018-11-07 17:02:08,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:02:08,395 INFO L93 Difference]: Finished difference Result 19680 states and 34117 transitions. [2018-11-07 17:02:08,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-07 17:02:08,398 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 212 [2018-11-07 17:02:08,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:02:08,487 INFO L225 Difference]: With dead ends: 19680 [2018-11-07 17:02:08,488 INFO L226 Difference]: Without dead ends: 15014 [2018-11-07 17:02:08,527 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 446 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2018-11-07 17:02:08,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15014 states. [2018-11-07 17:02:09,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15014 to 15005. [2018-11-07 17:02:09,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15005 states. [2018-11-07 17:02:09,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15005 states to 15005 states and 23038 transitions. [2018-11-07 17:02:09,161 INFO L78 Accepts]: Start accepts. Automaton has 15005 states and 23038 transitions. Word has length 212 [2018-11-07 17:02:09,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:02:09,161 INFO L480 AbstractCegarLoop]: Abstraction has 15005 states and 23038 transitions. [2018-11-07 17:02:09,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 17:02:09,162 INFO L276 IsEmpty]: Start isEmpty. Operand 15005 states and 23038 transitions. [2018-11-07 17:02:09,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-11-07 17:02:09,229 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:02:09,229 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 17:02:09,230 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:02:09,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:02:09,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1655863225, now seen corresponding path program 1 times [2018-11-07 17:02:09,230 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:02:09,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:02:09,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:02:09,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:02:09,231 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:02:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:02:09,931 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 160 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-07 17:02:09,932 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:02:09,932 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:02:09,932 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 304 with the following transitions: [2018-11-07 17:02:09,932 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [76], [79], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [749], [751], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 17:02:09,937 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:02:09,938 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:02:12,036 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:02:12,036 INFO L272 AbstractInterpreter]: Visited 166 different actions 326 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 17:02:12,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:02:12,042 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:02:13,956 INFO L227 lantSequenceWeakener]: Weakened 300 states. On average, predicates are now at 70.4% of their original sizes. [2018-11-07 17:02:13,956 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:02:14,497 INFO L415 sIntCurrentIteration]: We unified 302 AI predicates to 302 [2018-11-07 17:02:14,497 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:02:14,498 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:02:14,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-07 17:02:14,498 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:02:14,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 17:02:14,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 17:02:14,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-07 17:02:14,502 INFO L87 Difference]: Start difference. First operand 15005 states and 23038 transitions. Second operand 19 states. Received shutdown request... [2018-11-07 17:02:44,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 17:02:44,218 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 17:02:44,223 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 17:02:44,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:02:44 BoogieIcfgContainer [2018-11-07 17:02:44,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 17:02:44,225 INFO L168 Benchmark]: Toolchain (without parser) took 231402.12 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 496.4 MB in the end (delta: 908.1 MB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2018-11-07 17:02:44,226 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 17:02:44,226 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1231.11 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 17:02:44,227 INFO L168 Benchmark]: Boogie Procedure Inliner took 224.56 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 731.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -855.8 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. [2018-11-07 17:02:44,228 INFO L168 Benchmark]: Boogie Preprocessor took 149.79 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 17:02:44,229 INFO L168 Benchmark]: RCFGBuilder took 5651.83 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 269.6 MB). Peak memory consumption was 269.6 MB. Max. memory is 7.1 GB. [2018-11-07 17:02:44,230 INFO L168 Benchmark]: TraceAbstraction took 224138.53 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 496.4 MB in the end (delta: 1.4 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-11-07 17:02:44,234 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1231.11 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 224.56 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 731.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -855.8 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 149.79 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5651.83 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 269.6 MB). Peak memory consumption was 269.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224138.53 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 496.4 MB in the end (delta: 1.4 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1497]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1497). Cancelled while BasicCegarLoop was constructing difference of abstraction (15005states) and FLOYD_HOARE automaton (currently 13 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (2806 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 224.0s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 191.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1584 SDtfs, 13153 SDslu, 3491 SDs, 0 SdLazy, 17687 SolverSat, 3385 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 121.9s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 1434 GetRequests, 1215 SyntacticMatches, 55 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1580 ImplicationChecksByTransitivity, 12.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15005occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.7s AbstIntTime, 5 AbstIntIterations, 4 AbstIntStrong, 0.9988055985678238 AbsIntWeakeningRatio, 0.2965050732807215 AbsIntAvgWeakeningVarsNumRemoved, 54.877113866967306 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 402 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 1833 NumberOfCodeBlocks, 1833 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2035 ConstructedInterpolants, 0 QuantifiedInterpolants, 819960 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1185 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 525/612 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown