java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label58_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 01:13:35,334 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 01:13:35,336 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 01:13:35,349 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 01:13:35,349 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 01:13:35,350 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 01:13:35,352 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 01:13:35,353 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 01:13:35,355 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 01:13:35,356 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 01:13:35,357 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 01:13:35,357 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 01:13:35,358 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 01:13:35,359 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 01:13:35,360 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 01:13:35,361 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 01:13:35,362 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 01:13:35,364 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 01:13:35,366 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 01:13:35,368 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 01:13:35,373 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 01:13:35,374 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 01:13:35,377 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 01:13:35,378 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 01:13:35,378 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 01:13:35,379 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 01:13:35,380 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 01:13:35,380 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 01:13:35,381 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 01:13:35,382 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 01:13:35,382 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 01:13:35,383 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 01:13:35,383 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 01:13:35,384 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 01:13:35,384 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 01:13:35,385 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 01:13:35,385 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 01:13:35,401 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 01:13:35,402 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 01:13:35,402 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 01:13:35,403 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 01:13:35,403 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 01:13:35,403 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 01:13:35,403 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 01:13:35,403 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 01:13:35,404 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 01:13:35,404 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 01:13:35,404 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 01:13:35,404 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 01:13:35,405 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 01:13:35,405 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 01:13:35,405 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 01:13:35,406 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 01:13:35,406 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 01:13:35,406 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 01:13:35,406 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 01:13:35,406 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 01:13:35,407 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 01:13:35,407 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 01:13:35,407 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 01:13:35,407 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 01:13:35,407 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 01:13:35,408 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 01:13:35,408 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 01:13:35,408 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 01:13:35,408 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 01:13:35,408 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 01:13:35,409 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 01:13:35,409 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 01:13:35,409 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 01:13:35,409 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 01:13:35,454 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 01:13:35,467 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 01:13:35,471 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 01:13:35,473 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 01:13:35,473 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 01:13:35,474 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label58_true-unreach-call.c [2018-10-27 01:13:35,533 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/679e18a8f/1781909ec3fa4422bc254535a3df858f/FLAGb06434747 [2018-10-27 01:13:36,225 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 01:13:36,228 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label58_true-unreach-call.c [2018-10-27 01:13:36,249 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/679e18a8f/1781909ec3fa4422bc254535a3df858f/FLAGb06434747 [2018-10-27 01:13:36,271 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/679e18a8f/1781909ec3fa4422bc254535a3df858f [2018-10-27 01:13:36,284 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 01:13:36,286 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 01:13:36,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 01:13:36,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 01:13:36,291 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 01:13:36,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:13:36" (1/1) ... [2018-10-27 01:13:36,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b295a00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:36, skipping insertion in model container [2018-10-27 01:13:36,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:13:36" (1/1) ... [2018-10-27 01:13:36,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 01:13:36,408 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 01:13:37,111 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 01:13:37,117 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 01:13:37,413 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 01:13:37,438 INFO L193 MainTranslator]: Completed translation [2018-10-27 01:13:37,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:37 WrapperNode [2018-10-27 01:13:37,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 01:13:37,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 01:13:37,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 01:13:37,441 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 01:13:37,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:37" (1/1) ... [2018-10-27 01:13:37,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:37" (1/1) ... [2018-10-27 01:13:37,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 01:13:37,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 01:13:37,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 01:13:37,769 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 01:13:37,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:37" (1/1) ... [2018-10-27 01:13:37,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:37" (1/1) ... [2018-10-27 01:13:37,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:37" (1/1) ... [2018-10-27 01:13:37,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:37" (1/1) ... [2018-10-27 01:13:37,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:37" (1/1) ... [2018-10-27 01:13:37,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:37" (1/1) ... [2018-10-27 01:13:37,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:37" (1/1) ... [2018-10-27 01:13:37,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 01:13:37,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 01:13:37,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 01:13:37,876 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 01:13:37,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 01:13:37,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 01:13:37,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 01:13:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 01:13:37,938 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 01:13:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 01:13:37,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 01:13:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 01:13:37,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 01:13:42,894 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 01:13:42,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:13:42 BoogieIcfgContainer [2018-10-27 01:13:42,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 01:13:42,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 01:13:42,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 01:13:42,901 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 01:13:42,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:13:36" (1/3) ... [2018-10-27 01:13:42,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760b9175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:13:42, skipping insertion in model container [2018-10-27 01:13:42,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:37" (2/3) ... [2018-10-27 01:13:42,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760b9175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:13:42, skipping insertion in model container [2018-10-27 01:13:42,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:13:42" (3/3) ... [2018-10-27 01:13:42,905 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label58_true-unreach-call.c [2018-10-27 01:13:42,915 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 01:13:42,925 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 01:13:42,942 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 01:13:42,983 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 01:13:42,983 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 01:13:42,984 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 01:13:42,984 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 01:13:42,984 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 01:13:42,984 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 01:13:42,984 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 01:13:42,985 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 01:13:43,012 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-27 01:13:43,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-27 01:13:43,030 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 01:13:43,031 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] [2018-10-27 01:13:43,034 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 01:13:43,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 01:13:43,039 INFO L82 PathProgramCache]: Analyzing trace with hash 25486780, now seen corresponding path program 1 times [2018-10-27 01:13:43,042 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 01:13:43,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 01:13:43,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 01:13:43,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 01:13:43,092 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 01:13:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 01:13:43,955 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-27 01:13:44,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 01:13:44,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 01:13:44,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 01:13:44,359 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 01:13:44,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 01:13:44,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 01:13:44,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 01:13:44,384 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-27 01:13:47,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 01:13:47,565 INFO L93 Difference]: Finished difference Result 1080 states and 1936 transitions. [2018-10-27 01:13:47,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 01:13:47,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2018-10-27 01:13:47,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 01:13:47,595 INFO L225 Difference]: With dead ends: 1080 [2018-10-27 01:13:47,596 INFO L226 Difference]: Without dead ends: 762 [2018-10-27 01:13:47,603 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 01:13:47,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2018-10-27 01:13:47,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 520. [2018-10-27 01:13:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-10-27 01:13:47,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 919 transitions. [2018-10-27 01:13:47,695 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 919 transitions. Word has length 167 [2018-10-27 01:13:47,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 01:13:47,696 INFO L481 AbstractCegarLoop]: Abstraction has 520 states and 919 transitions. [2018-10-27 01:13:47,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 01:13:47,697 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 919 transitions. [2018-10-27 01:13:47,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-27 01:13:47,704 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 01:13:47,705 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 01:13:47,705 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 01:13:47,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 01:13:47,706 INFO L82 PathProgramCache]: Analyzing trace with hash 256333056, now seen corresponding path program 1 times [2018-10-27 01:13:47,706 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 01:13:47,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 01:13:47,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 01:13:47,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 01:13:47,708 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 01:13:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 01:13:48,041 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 01:13:48,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 01:13:48,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-27 01:13:48,042 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 01:13:48,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 01:13:48,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 01:13:48,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 01:13:48,045 INFO L87 Difference]: Start difference. First operand 520 states and 919 transitions. Second operand 7 states. [2018-10-27 01:13:51,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 01:13:51,320 INFO L93 Difference]: Finished difference Result 1609 states and 2945 transitions. [2018-10-27 01:13:51,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-27 01:13:51,323 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2018-10-27 01:13:51,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 01:13:51,339 INFO L225 Difference]: With dead ends: 1609 [2018-10-27 01:13:51,339 INFO L226 Difference]: Without dead ends: 1095 [2018-10-27 01:13:51,343 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-27 01:13:51,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2018-10-27 01:13:51,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1030. [2018-10-27 01:13:51,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1030 states. [2018-10-27 01:13:51,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1816 transitions. [2018-10-27 01:13:51,455 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1816 transitions. Word has length 184 [2018-10-27 01:13:51,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 01:13:51,455 INFO L481 AbstractCegarLoop]: Abstraction has 1030 states and 1816 transitions. [2018-10-27 01:13:51,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 01:13:51,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1816 transitions. [2018-10-27 01:13:51,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-27 01:13:51,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 01:13:51,468 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] [2018-10-27 01:13:51,468 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 01:13:51,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 01:13:51,469 INFO L82 PathProgramCache]: Analyzing trace with hash -208733179, now seen corresponding path program 1 times [2018-10-27 01:13:51,469 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 01:13:51,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 01:13:51,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 01:13:51,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 01:13:51,471 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 01:13:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 01:13:51,742 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-27 01:13:51,997 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 01:13:51,998 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 01:13:51,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 01:13:51,998 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 01:13:51,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 01:13:51,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 01:13:51,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 01:13:52,000 INFO L87 Difference]: Start difference. First operand 1030 states and 1816 transitions. Second operand 6 states. [2018-10-27 01:13:55,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 01:13:55,219 INFO L93 Difference]: Finished difference Result 3134 states and 5772 transitions. [2018-10-27 01:13:55,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 01:13:55,220 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 185 [2018-10-27 01:13:55,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 01:13:55,237 INFO L225 Difference]: With dead ends: 3134 [2018-10-27 01:13:55,237 INFO L226 Difference]: Without dead ends: 2110 [2018-10-27 01:13:55,242 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 01:13:55,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2018-10-27 01:13:55,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2036. [2018-10-27 01:13:55,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2036 states. [2018-10-27 01:13:55,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 3605 transitions. [2018-10-27 01:13:55,336 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 3605 transitions. Word has length 185 [2018-10-27 01:13:55,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 01:13:55,337 INFO L481 AbstractCegarLoop]: Abstraction has 2036 states and 3605 transitions. [2018-10-27 01:13:55,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 01:13:55,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 3605 transitions. [2018-10-27 01:13:55,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-27 01:13:55,344 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 01:13:55,345 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 01:13:55,345 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 01:13:55,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 01:13:55,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1838382951, now seen corresponding path program 1 times [2018-10-27 01:13:55,346 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 01:13:55,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 01:13:55,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 01:13:55,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 01:13:55,348 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 01:13:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 01:13:55,581 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-27 01:13:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 01:13:55,724 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 01:13:55,724 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 01:13:55,726 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 195 with the following transitions: [2018-10-27 01:13:55,728 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [797], [799], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 01:13:55,825 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 01:13:55,826 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 01:18:09,507 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 01:18:09,509 INFO L272 AbstractInterpreter]: Visited 168 different actions 168 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-27 01:18:09,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 01:18:09,521 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown