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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:49:55,860 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:49:55,862 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:49:55,883 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:49:55,883 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:49:55,884 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:49:55,888 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:49:55,890 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:49:55,891 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:49:55,892 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:49:55,893 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:49:55,893 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:49:55,894 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:49:55,895 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:49:55,896 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:49:55,897 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:49:55,898 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:49:55,900 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:49:55,903 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:49:55,908 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:49:55,909 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:49:55,913 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:49:55,916 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:49:55,916 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:49:55,916 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:49:55,920 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:49:55,921 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:49:55,922 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:49:55,925 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:49:55,926 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:49:55,926 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:49:55,927 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:49:55,927 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:49:55,927 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:49:55,929 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:49:55,931 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:49:55,931 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.epf [2018-11-07 15:49:55,946 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:49:55,946 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:49:55,950 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:49:55,950 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:49:55,950 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:49:55,951 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:49:55,951 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:49:55,951 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:49:55,951 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:49:55,951 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:49:55,952 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:49:55,952 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:49:55,952 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:49:55,956 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:49:55,956 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:49:55,956 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:49:55,956 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:49:55,956 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:49:55,957 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:49:55,957 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:49:55,957 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:49:55,957 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:49:55,957 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:49:55,958 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:49:55,958 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:49:55,958 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:49:55,958 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:49:55,958 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:49:55,959 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:49:55,959 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:49:55,959 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:49:55,959 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:49:55,959 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:49:55,959 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:49:56,007 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:49:56,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:49:56,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:49:56,026 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:49:56,026 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:49:56,027 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label02_true-unreach-call.c [2018-11-07 15:49:56,086 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88fe736f3/9b66010328024361a6b45bb599695c48/FLAGd061f3cd9 [2018-11-07 15:49:56,993 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:49:56,994 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label02_true-unreach-call.c [2018-11-07 15:49:57,045 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88fe736f3/9b66010328024361a6b45bb599695c48/FLAGd061f3cd9 [2018-11-07 15:49:57,061 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88fe736f3/9b66010328024361a6b45bb599695c48 [2018-11-07 15:49:57,073 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:49:57,076 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:49:57,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:49:57,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:49:57,083 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:49:57,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:49:57" (1/1) ... [2018-11-07 15:49:57,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bbdaad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:57, skipping insertion in model container [2018-11-07 15:49:57,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:49:57" (1/1) ... [2018-11-07 15:49:57,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:49:57,381 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:49:59,355 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:49:59,360 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:50:00,571 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:50:00,628 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:50:00,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:00 WrapperNode [2018-11-07 15:50:00,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:50:00,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:50:00,630 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:50:00,630 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:50:00,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:00" (1/1) ... [2018-11-07 15:50:01,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:00" (1/1) ... [2018-11-07 15:50:01,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:50:01,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:50:01,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:50:01,183 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:50:01,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:00" (1/1) ... [2018-11-07 15:50:01,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:00" (1/1) ... [2018-11-07 15:50:01,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:00" (1/1) ... [2018-11-07 15:50:01,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:00" (1/1) ... [2018-11-07 15:50:01,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:00" (1/1) ... [2018-11-07 15:50:01,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:00" (1/1) ... [2018-11-07 15:50:01,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:00" (1/1) ... [2018-11-07 15:50:01,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:50:01,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:50:01,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:50:01,659 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:50:01,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:00" (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 15:50:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:50:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:50:01,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:50:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 15:50:01,742 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 15:50:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 15:50:01,743 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 15:50:01,743 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 15:50:01,743 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 15:50:01,743 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 15:50:01,744 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 15:50:01,744 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:50:01,744 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:50:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:50:01,745 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:50:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:50:01,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:50:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:50:01,746 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:50:15,704 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:50:15,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:50:15 BoogieIcfgContainer [2018-11-07 15:50:15,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:50:15,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:50:15,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:50:15,710 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:50:15,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:49:57" (1/3) ... [2018-11-07 15:50:15,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f210f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:50:15, skipping insertion in model container [2018-11-07 15:50:15,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:00" (2/3) ... [2018-11-07 15:50:15,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f210f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:50:15, skipping insertion in model container [2018-11-07 15:50:15,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:50:15" (3/3) ... [2018-11-07 15:50:15,714 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label02_true-unreach-call.c [2018-11-07 15:50:15,724 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:50:15,735 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:50:15,753 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:50:15,806 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:50:15,807 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:50:15,807 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:50:15,807 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:50:15,807 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:50:15,807 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:50:15,808 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:50:15,808 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:50:15,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 15:50:15,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-11-07 15:50:15,877 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:50:15,878 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] [2018-11-07 15:50:15,880 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:50:15,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:50:15,886 INFO L82 PathProgramCache]: Analyzing trace with hash -204669534, now seen corresponding path program 1 times [2018-11-07 15:50:15,889 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:50:15,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:50:15,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:50:15,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:50:15,943 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:50:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:50:16,416 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:50:16,524 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 15:50:16,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:50:16,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:50:16,528 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:50:16,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:50:16,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:50:16,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:50:16,559 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 15:50:29,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:50:29,270 INFO L93 Difference]: Finished difference Result 5034 states and 9499 transitions. [2018-11-07 15:50:29,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:50:29,279 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2018-11-07 15:50:29,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:50:29,330 INFO L225 Difference]: With dead ends: 5034 [2018-11-07 15:50:29,331 INFO L226 Difference]: Without dead ends: 3254 [2018-11-07 15:50:29,343 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:50:29,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2018-11-07 15:50:29,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3207. [2018-11-07 15:50:29,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3207 states. [2018-11-07 15:50:29,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 5994 transitions. [2018-11-07 15:50:29,594 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 5994 transitions. Word has length 73 [2018-11-07 15:50:29,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:50:29,595 INFO L480 AbstractCegarLoop]: Abstraction has 3207 states and 5994 transitions. [2018-11-07 15:50:29,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:50:29,595 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 5994 transitions. [2018-11-07 15:50:29,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-07 15:50:29,612 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:50:29,613 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, 2, 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] [2018-11-07 15:50:29,613 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:50:29,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:50:29,614 INFO L82 PathProgramCache]: Analyzing trace with hash -238257218, now seen corresponding path program 1 times [2018-11-07 15:50:29,614 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:50:29,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:50:29,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:50:29,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:50:29,616 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:50:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:50:30,283 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:50:30,283 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:50:30,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:50:30,284 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:50:30,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:50:30,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:50:30,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:50:30,288 INFO L87 Difference]: Start difference. First operand 3207 states and 5994 transitions. Second operand 6 states. [2018-11-07 15:50:50,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:50:50,786 INFO L93 Difference]: Finished difference Result 9599 states and 17994 transitions. [2018-11-07 15:50:50,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 15:50:50,787 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-11-07 15:50:50,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:50:50,824 INFO L225 Difference]: With dead ends: 9599 [2018-11-07 15:50:50,824 INFO L226 Difference]: Without dead ends: 6398 [2018-11-07 15:50:50,835 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 15:50:50,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6398 states. [2018-11-07 15:50:51,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6398 to 6274. [2018-11-07 15:50:51,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6274 states. [2018-11-07 15:50:51,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6274 states to 6274 states and 11303 transitions. [2018-11-07 15:50:51,031 INFO L78 Accepts]: Start accepts. Automaton has 6274 states and 11303 transitions. Word has length 146 [2018-11-07 15:50:51,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:50:51,032 INFO L480 AbstractCegarLoop]: Abstraction has 6274 states and 11303 transitions. [2018-11-07 15:50:51,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:50:51,032 INFO L276 IsEmpty]: Start isEmpty. Operand 6274 states and 11303 transitions. [2018-11-07 15:50:51,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-11-07 15:50:51,035 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:50:51,036 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, 2, 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] [2018-11-07 15:50:51,036 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:50:51,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:50:51,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1315033247, now seen corresponding path program 1 times [2018-11-07 15:50:51,037 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:50:51,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:50:51,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:50:51,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:50:51,038 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:50:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:50:51,404 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:50:51,405 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:50:51,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:50:51,405 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:50:51,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:50:51,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:50:51,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:50:51,407 INFO L87 Difference]: Start difference. First operand 6274 states and 11303 transitions. Second operand 5 states. [2018-11-07 15:51:09,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:51:09,503 INFO L93 Difference]: Finished difference Result 18938 states and 34291 transitions. [2018-11-07 15:51:09,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 15:51:09,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2018-11-07 15:51:09,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:51:09,579 INFO L225 Difference]: With dead ends: 18938 [2018-11-07 15:51:09,580 INFO L226 Difference]: Without dead ends: 12670 [2018-11-07 15:51:09,600 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:51:09,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12670 states. [2018-11-07 15:51:09,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12670 to 12405. [2018-11-07 15:51:09,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12405 states. [2018-11-07 15:51:09,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12405 states to 12405 states and 18885 transitions. [2018-11-07 15:51:09,899 INFO L78 Accepts]: Start accepts. Automaton has 12405 states and 18885 transitions. Word has length 160 [2018-11-07 15:51:09,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:51:09,899 INFO L480 AbstractCegarLoop]: Abstraction has 12405 states and 18885 transitions. [2018-11-07 15:51:09,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:51:09,900 INFO L276 IsEmpty]: Start isEmpty. Operand 12405 states and 18885 transitions. [2018-11-07 15:51:09,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-11-07 15:51:09,903 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:51:09,907 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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:51:09,908 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:51:09,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:51:09,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1267702423, now seen corresponding path program 1 times [2018-11-07 15:51:09,908 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:51:09,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:51:09,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:51:09,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:51:09,910 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:51:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:51:10,272 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 132 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:51:10,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:51:10,273 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:51:10,274 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 251 with the following transitions: [2018-11-07 15:51:10,276 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5610], [5618], [5626], [5634], [5642], [5650], [5658], [5666], [5674], [5682], [5690], [5698], [5706], [5710], [5712], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5822], [5823], [5827], [5838], [5841], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 15:51:10,335 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:51:10,335 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:51:10,880 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:51:10,882 INFO L272 AbstractInterpreter]: Visited 95 different actions 95 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 15:51:10,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:51:10,914 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:51:11,551 INFO L227 lantSequenceWeakener]: Weakened 241 states. On average, predicates are now at 75.88% of their original sizes. [2018-11-07 15:51:11,552 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:51:11,917 INFO L415 sIntCurrentIteration]: We unified 249 AI predicates to 249 [2018-11-07 15:51:11,918 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:51:11,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:51:11,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 15:51:11,922 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:51:11,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 15:51:11,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 15:51:11,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 15:51:11,923 INFO L87 Difference]: Start difference. First operand 12405 states and 18885 transitions. Second operand 7 states. [2018-11-07 15:51:17,318 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown