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/Problem03_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 12:57:33,855 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 12:57:33,857 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 12:57:33,869 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 12:57:33,870 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 12:57:33,871 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 12:57:33,872 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 12:57:33,874 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 12:57:33,876 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 12:57:33,877 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 12:57:33,878 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 12:57:33,878 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 12:57:33,880 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 12:57:33,881 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 12:57:33,884 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 12:57:33,885 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 12:57:33,886 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 12:57:33,890 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 12:57:33,897 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 12:57:33,902 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 12:57:33,906 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 12:57:33,907 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 12:57:33,913 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 12:57:33,913 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 12:57:33,913 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 12:57:33,914 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 12:57:33,916 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 12:57:33,917 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 12:57:33,918 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 12:57:33,919 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 12:57:33,919 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 12:57:33,925 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 12:57:33,925 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 12:57:33,925 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 12:57:33,926 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 12:57:33,927 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 12:57:33,927 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 12:57:33,959 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 12:57:33,959 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 12:57:33,962 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 12:57:33,963 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 12:57:33,966 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 12:57:33,966 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 12:57:33,966 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 12:57:33,967 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 12:57:33,967 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 12:57:33,967 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 12:57:33,967 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 12:57:33,967 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 12:57:33,968 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 12:57:33,969 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 12:57:33,969 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 12:57:33,969 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 12:57:33,969 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 12:57:33,969 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 12:57:33,970 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 12:57:33,970 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 12:57:33,970 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 12:57:33,970 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 12:57:33,970 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 12:57:33,972 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 12:57:33,973 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:57:33,973 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 12:57:33,973 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 12:57:33,973 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 12:57:33,973 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 12:57:33,974 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 12:57:33,974 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 12:57:33,974 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 12:57:33,974 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 12:57:33,974 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 12:57:34,024 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 12:57:34,040 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 12:57:34,044 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 12:57:34,046 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 12:57:34,046 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 12:57:34,047 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label01_true-unreach-call.c [2018-11-07 12:57:34,113 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38010c79e/59712f8ae706499fa8e7c401bc204612/FLAG204c67900 [2018-11-07 12:57:34,731 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 12:57:34,734 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label01_true-unreach-call.c [2018-11-07 12:57:34,752 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38010c79e/59712f8ae706499fa8e7c401bc204612/FLAG204c67900 [2018-11-07 12:57:34,769 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38010c79e/59712f8ae706499fa8e7c401bc204612 [2018-11-07 12:57:34,780 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 12:57:34,781 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 12:57:34,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 12:57:34,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 12:57:34,786 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 12:57:34,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:57:34" (1/1) ... [2018-11-07 12:57:34,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673adebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:34, skipping insertion in model container [2018-11-07 12:57:34,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:57:34" (1/1) ... [2018-11-07 12:57:34,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 12:57:34,891 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 12:57:35,639 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:57:35,645 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 12:57:35,972 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:57:35,995 INFO L193 MainTranslator]: Completed translation [2018-11-07 12:57:35,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:35 WrapperNode [2018-11-07 12:57:35,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 12:57:35,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 12:57:35,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 12:57:35,998 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 12:57:36,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:35" (1/1) ... [2018-11-07 12:57:36,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:35" (1/1) ... [2018-11-07 12:57:36,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 12:57:36,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 12:57:36,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 12:57:36,201 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 12:57:36,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:35" (1/1) ... [2018-11-07 12:57:36,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:35" (1/1) ... [2018-11-07 12:57:36,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:35" (1/1) ... [2018-11-07 12:57:36,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:35" (1/1) ... [2018-11-07 12:57:36,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:35" (1/1) ... [2018-11-07 12:57:36,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:35" (1/1) ... [2018-11-07 12:57:36,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:35" (1/1) ... [2018-11-07 12:57:36,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 12:57:36,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 12:57:36,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 12:57:36,350 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 12:57:36,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:35" (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 12:57:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 12:57:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 12:57:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 12:57:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 12:57:36,419 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 12:57:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 12:57:36,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 12:57:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 12:57:36,420 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 12:57:41,551 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 12:57:41,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:57:41 BoogieIcfgContainer [2018-11-07 12:57:41,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 12:57:41,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 12:57:41,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 12:57:41,557 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 12:57:41,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:57:34" (1/3) ... [2018-11-07 12:57:41,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626ec42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:57:41, skipping insertion in model container [2018-11-07 12:57:41,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:35" (2/3) ... [2018-11-07 12:57:41,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626ec42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:57:41, skipping insertion in model container [2018-11-07 12:57:41,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:57:41" (3/3) ... [2018-11-07 12:57:41,562 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label01_true-unreach-call.c [2018-11-07 12:57:41,573 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 12:57:41,584 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 12:57:41,602 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 12:57:41,643 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 12:57:41,643 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 12:57:41,643 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 12:57:41,644 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 12:57:41,644 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 12:57:41,644 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 12:57:41,644 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 12:57:41,644 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 12:57:41,675 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 12:57:41,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-11-07 12:57:41,694 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:57:41,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:57:41,699 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:57:41,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:57:41,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1178454204, now seen corresponding path program 1 times [2018-11-07 12:57:41,710 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:57:41,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:57:41,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:57:41,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:57:41,772 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:57:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:57:42,643 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:57:42,917 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 12:57:42,919 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:57:42,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 12:57:42,920 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:57:42,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 12:57:42,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 12:57:42,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:57:42,947 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-07 12:57:45,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:57:45,255 INFO L93 Difference]: Finished difference Result 844 states and 1489 transitions. [2018-11-07 12:57:45,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 12:57:45,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2018-11-07 12:57:45,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:57:45,281 INFO L225 Difference]: With dead ends: 844 [2018-11-07 12:57:45,281 INFO L226 Difference]: Without dead ends: 530 [2018-11-07 12:57:45,289 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 12:57:45,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2018-11-07 12:57:45,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 525. [2018-11-07 12:57:45,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-11-07 12:57:45,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 865 transitions. [2018-11-07 12:57:45,391 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 865 transitions. Word has length 193 [2018-11-07 12:57:45,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:57:45,393 INFO L480 AbstractCegarLoop]: Abstraction has 525 states and 865 transitions. [2018-11-07 12:57:45,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 12:57:45,393 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 865 transitions. [2018-11-07 12:57:45,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-11-07 12:57:45,402 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:57:45,402 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:57:45,403 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:57:45,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:57:45,404 INFO L82 PathProgramCache]: Analyzing trace with hash 851918400, now seen corresponding path program 1 times [2018-11-07 12:57:45,404 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:57:45,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:57:45,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:57:45,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:57:45,405 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:57:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:57:45,915 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:57:45,916 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:57:45,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 12:57:45,916 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:57:45,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 12:57:45,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 12:57:45,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:57:45,921 INFO L87 Difference]: Start difference. First operand 525 states and 865 transitions. Second operand 3 states. [2018-11-07 12:57:48,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:57:48,019 INFO L93 Difference]: Finished difference Result 1477 states and 2511 transitions. [2018-11-07 12:57:48,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 12:57:48,019 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 206 [2018-11-07 12:57:48,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:57:48,027 INFO L225 Difference]: With dead ends: 1477 [2018-11-07 12:57:48,028 INFO L226 Difference]: Without dead ends: 958 [2018-11-07 12:57:48,031 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:57:48,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2018-11-07 12:57:48,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 943. [2018-11-07 12:57:48,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2018-11-07 12:57:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1546 transitions. [2018-11-07 12:57:48,086 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1546 transitions. Word has length 206 [2018-11-07 12:57:48,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:57:48,087 INFO L480 AbstractCegarLoop]: Abstraction has 943 states and 1546 transitions. [2018-11-07 12:57:48,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 12:57:48,087 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1546 transitions. [2018-11-07 12:57:48,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-11-07 12:57:48,093 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:57:48,094 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:57:48,094 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:57:48,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:57:48,094 INFO L82 PathProgramCache]: Analyzing trace with hash 584750157, now seen corresponding path program 1 times [2018-11-07 12:57:48,095 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:57:48,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:57:48,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:57:48,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:57:48,096 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:57:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:57:48,368 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 12:57:48,735 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 12:57:48,735 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:57:48,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:57:48,735 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:57:48,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:57:48,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:57:48,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:57:48,737 INFO L87 Difference]: Start difference. First operand 943 states and 1546 transitions. Second operand 6 states. [2018-11-07 12:57:55,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:57:55,392 INFO L93 Difference]: Finished difference Result 2885 states and 4975 transitions. [2018-11-07 12:57:55,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 12:57:55,393 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2018-11-07 12:57:55,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:57:55,419 INFO L225 Difference]: With dead ends: 2885 [2018-11-07 12:57:55,420 INFO L226 Difference]: Without dead ends: 1948 [2018-11-07 12:57:55,426 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 12:57:55,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2018-11-07 12:57:55,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1883. [2018-11-07 12:57:55,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1883 states. [2018-11-07 12:57:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 3103 transitions. [2018-11-07 12:57:55,526 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 3103 transitions. Word has length 211 [2018-11-07 12:57:55,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:57:55,526 INFO L480 AbstractCegarLoop]: Abstraction has 1883 states and 3103 transitions. [2018-11-07 12:57:55,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:57:55,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 3103 transitions. [2018-11-07 12:57:55,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-11-07 12:57:55,535 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:57:55,535 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:57:55,536 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:57:55,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:57:55,536 INFO L82 PathProgramCache]: Analyzing trace with hash -223286947, now seen corresponding path program 1 times [2018-11-07 12:57:55,536 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:57:55,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:57:55,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:57:55,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:57:55,538 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:57:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:57:55,826 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:57:55,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:57:55,827 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:57:55,827 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-11-07 12:57:55,830 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [36], [37], [41], [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], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1005], [1007], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 12:57:55,910 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:57:55,910 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:58:15,052 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:58:15,054 INFO L272 AbstractInterpreter]: Visited 194 different actions 194 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 12:58:15,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:58:15,077 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:58:26,637 INFO L227 lantSequenceWeakener]: Weakened 209 states. On average, predicates are now at 73.87% of their original sizes. [2018-11-07 12:58:26,637 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:58:27,159 INFO L415 sIntCurrentIteration]: We unified 217 AI predicates to 217 [2018-11-07 12:58:27,160 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:58:27,160 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:58:27,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-11-07 12:58:27,161 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:58:27,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 12:58:27,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 12:58:27,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2018-11-07 12:58:27,164 INFO L87 Difference]: Start difference. First operand 1883 states and 3103 transitions. Second operand 21 states. [2018-11-07 12:59:42,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:59:42,968 INFO L93 Difference]: Finished difference Result 3970 states and 6516 transitions. [2018-11-07 12:59:42,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 12:59:42,969 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 218 [2018-11-07 12:59:42,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:59:42,982 INFO L225 Difference]: With dead ends: 3970 [2018-11-07 12:59:42,982 INFO L226 Difference]: Without dead ends: 2093 [2018-11-07 12:59:42,993 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 220 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2018-11-07 12:59:42,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2018-11-07 12:59:43,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 2091. [2018-11-07 12:59:43,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2091 states. [2018-11-07 12:59:43,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2091 states to 2091 states and 3320 transitions. [2018-11-07 12:59:43,060 INFO L78 Accepts]: Start accepts. Automaton has 2091 states and 3320 transitions. Word has length 218 [2018-11-07 12:59:43,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:59:43,061 INFO L480 AbstractCegarLoop]: Abstraction has 2091 states and 3320 transitions. [2018-11-07 12:59:43,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 12:59:43,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 3320 transitions. [2018-11-07 12:59:43,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-11-07 12:59:43,070 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:59:43,071 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:43,071 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:59:43,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:59:43,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1470271054, now seen corresponding path program 1 times [2018-11-07 12:59:43,072 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:59:43,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:59:43,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:59:43,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:59:43,073 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:59:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:59:43,414 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:59:43,415 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:59:43,415 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:59:43,415 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 226 with the following transitions: [2018-11-07 12:59:43,416 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [37], [41], [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], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1005], [1007], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 12:59:43,442 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:59:43,442 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 13:01:05,683 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 13:01:05,683 INFO L272 AbstractInterpreter]: Visited 197 different actions 387 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 13:01:05,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:01:05,693 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 13:01:47,283 INFO L227 lantSequenceWeakener]: Weakened 222 states. On average, predicates are now at 73.67% of their original sizes. [2018-11-07 13:01:47,283 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 13:01:47,885 INFO L415 sIntCurrentIteration]: We unified 224 AI predicates to 224 [2018-11-07 13:01:47,885 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 13:01:47,886 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 13:01:47,886 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [6] total 28 [2018-11-07 13:01:47,886 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:01:47,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-07 13:01:47,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-07 13:01:47,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2018-11-07 13:01:47,887 INFO L87 Difference]: Start difference. First operand 2091 states and 3320 transitions. Second operand 24 states. Received shutdown request... [2018-11-07 13:01:48,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 13:01:48,085 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 13:01:48,090 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 13:01:48,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:01:48 BoogieIcfgContainer [2018-11-07 13:01:48,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 13:01:48,091 INFO L168 Benchmark]: Toolchain (without parser) took 253311.20 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -380.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 13:01:48,093 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 13:01:48,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1214.23 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 13:01:48,094 INFO L168 Benchmark]: Boogie Procedure Inliner took 203.48 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -857.5 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. [2018-11-07 13:01:48,095 INFO L168 Benchmark]: Boogie Preprocessor took 147.97 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 13:01:48,096 INFO L168 Benchmark]: RCFGBuilder took 5202.62 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 250.1 MB). Peak memory consumption was 250.1 MB. Max. memory is 7.1 GB. [2018-11-07 13:01:48,097 INFO L168 Benchmark]: TraceAbstraction took 246537.52 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 142.3 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 13:01:48,102 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1214.23 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 203.48 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -857.5 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.97 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5202.62 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 250.1 MB). Peak memory consumption was 250.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246537.52 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 142.3 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1593]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1593). Cancelled while BasicCegarLoop was constructing difference of abstraction (2091states) and FLOYD_HOARE automaton (currently 3 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (2 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 246.4s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 87.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 881 SDtfs, 2270 SDslu, 1324 SDs, 0 SdLazy, 5175 SolverSat, 663 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 69.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 463 GetRequests, 407 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2091occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 101.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9990479479937497 AbsIntWeakeningRatio, 0.2811791383219955 AbsIntAvgWeakeningVarsNumRemoved, 64.98639455782313 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 87 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 1053 NumberOfCodeBlocks, 1053 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1048 ConstructedInterpolants, 0 QuantifiedInterpolants, 449163 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 86/90 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown