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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label00_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:46:17,297 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:46:17,300 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:46:17,317 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:46:17,318 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:46:17,320 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:46:17,321 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:46:17,324 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:46:17,327 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:46:17,328 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:46:17,332 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:46:17,332 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:46:17,334 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:46:17,335 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:46:17,336 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:46:17,336 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:46:17,345 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:46:17,347 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:46:17,350 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:46:17,355 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:46:17,356 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:46:17,357 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:46:17,359 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:46:17,359 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:46:17,360 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:46:17,360 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:46:17,362 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:46:17,363 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:46:17,364 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:46:17,365 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:46:17,365 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:46:17,366 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:46:17,366 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:46:17,368 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:46:17,370 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:46:17,371 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:46:17,371 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:46:17,398 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:46:17,398 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:46:17,399 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:46:17,400 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:46:17,400 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:46:17,400 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:46:17,400 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:46:17,400 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:46:17,400 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:46:17,401 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:46:17,401 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:46:17,401 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:46:17,401 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:46:17,401 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:46:17,405 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:46:17,405 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:46:17,405 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:46:17,405 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:46:17,405 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:46:17,405 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:46:17,406 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:46:17,406 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:46:17,406 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:46:17,406 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:46:17,406 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:46:17,407 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:46:17,407 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:46:17,407 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:46:17,407 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:46:17,407 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:46:17,408 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:46:17,408 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:46:17,408 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:46:17,408 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:46:17,408 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:46:17,408 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:46:17,470 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:46:17,490 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:46:17,495 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:46:17,497 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:46:17,498 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:46:17,499 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label00_true-unreach-call.c [2018-11-07 08:46:17,581 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7ba29e88/56e2414d37614e6c944451baca85f687/FLAG0add9d780 [2018-11-07 08:46:18,575 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:46:18,576 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label00_true-unreach-call.c [2018-11-07 08:46:18,621 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7ba29e88/56e2414d37614e6c944451baca85f687/FLAG0add9d780 [2018-11-07 08:46:18,641 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7ba29e88/56e2414d37614e6c944451baca85f687 [2018-11-07 08:46:18,656 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:46:18,659 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:46:18,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:46:18,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:46:18,666 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:46:18,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:46:18" (1/1) ... [2018-11-07 08:46:18,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@386f4038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:18, skipping insertion in model container [2018-11-07 08:46:18,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:46:18" (1/1) ... [2018-11-07 08:46:18,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:46:18,881 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:46:20,477 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:46:20,483 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:46:21,326 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:46:21,366 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:46:21,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:21 WrapperNode [2018-11-07 08:46:21,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:46:21,368 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:46:21,368 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:46:21,368 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:46:21,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:21" (1/1) ... [2018-11-07 08:46:21,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:21" (1/1) ... [2018-11-07 08:46:21,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:46:21,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:46:21,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:46:21,815 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:46:21,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:21" (1/1) ... [2018-11-07 08:46:21,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:21" (1/1) ... [2018-11-07 08:46:21,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:21" (1/1) ... [2018-11-07 08:46:21,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:21" (1/1) ... [2018-11-07 08:46:21,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:21" (1/1) ... [2018-11-07 08:46:22,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:21" (1/1) ... [2018-11-07 08:46:22,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:21" (1/1) ... [2018-11-07 08:46:22,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:46:22,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:46:22,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:46:22,127 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:46:22,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:21" (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 08:46:22,202 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:46:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:46:22,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:46:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 08:46:22,203 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 08:46:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 08:46:22,204 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 08:46:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 08:46:22,204 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 08:46:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:46:22,204 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:46:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:46:22,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:46:22,206 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:46:22,206 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:46:31,940 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:46:31,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:46:31 BoogieIcfgContainer [2018-11-07 08:46:31,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:46:31,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:46:31,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:46:31,946 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:46:31,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:46:18" (1/3) ... [2018-11-07 08:46:31,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7409c34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:46:31, skipping insertion in model container [2018-11-07 08:46:31,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:21" (2/3) ... [2018-11-07 08:46:31,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7409c34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:46:31, skipping insertion in model container [2018-11-07 08:46:31,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:46:31" (3/3) ... [2018-11-07 08:46:31,950 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label00_true-unreach-call.c [2018-11-07 08:46:31,960 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:46:31,970 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:46:31,986 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:46:32,045 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:46:32,045 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:46:32,045 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:46:32,045 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:46:32,045 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:46:32,046 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:46:32,046 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:46:32,046 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:46:32,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 08:46:32,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-07 08:46:32,099 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:46:32,101 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] [2018-11-07 08:46:32,103 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:46:32,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:46:32,111 INFO L82 PathProgramCache]: Analyzing trace with hash -920036068, now seen corresponding path program 1 times [2018-11-07 08:46:32,114 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:46:32,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:46:32,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:46:32,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:46:32,172 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:46:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:46:32,574 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 08:46:32,592 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 08:46:32,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:46:32,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 08:46:32,595 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:46:32,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 08:46:32,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 08:46:32,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:46:32,623 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 08:46:46,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:46:46,204 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-11-07 08:46:46,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 08:46:46,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-11-07 08:46:46,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:46:46,260 INFO L225 Difference]: With dead ends: 3968 [2018-11-07 08:46:46,260 INFO L226 Difference]: Without dead ends: 2842 [2018-11-07 08:46:46,273 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:46:46,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-11-07 08:46:46,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-11-07 08:46:46,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-11-07 08:46:46,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-11-07 08:46:46,474 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 44 [2018-11-07 08:46:46,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:46:46,475 INFO L480 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-11-07 08:46:46,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 08:46:46,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-11-07 08:46:46,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-07 08:46:46,482 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:46:46,483 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:46:46,485 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:46:46,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:46:46,485 INFO L82 PathProgramCache]: Analyzing trace with hash 673844312, now seen corresponding path program 1 times [2018-11-07 08:46:46,486 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:46:46,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:46:46,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:46:46,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:46:46,488 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:46:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:46:46,905 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:46:46,905 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:46:46,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:46:46,905 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:46:46,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:46:46,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:46:46,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:46:46,908 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-11-07 08:46:59,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:46:59,060 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-11-07 08:46:59,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:46:59,064 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-11-07 08:46:59,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:46:59,096 INFO L225 Difference]: With dead ends: 5673 [2018-11-07 08:46:59,096 INFO L226 Difference]: Without dead ends: 3698 [2018-11-07 08:46:59,105 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:46:59,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-11-07 08:46:59,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-11-07 08:46:59,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-11-07 08:46:59,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-11-07 08:46:59,226 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 114 [2018-11-07 08:46:59,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:46:59,227 INFO L480 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-11-07 08:46:59,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:46:59,227 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-11-07 08:46:59,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-11-07 08:46:59,231 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:46:59,231 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:46:59,231 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:46:59,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:46:59,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1072616972, now seen corresponding path program 1 times [2018-11-07 08:46:59,232 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:46:59,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:46:59,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:46:59,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:46:59,233 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:46:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:46:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:46:59,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:46:59,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:46:59,427 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:46:59,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:46:59,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:46:59,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:46:59,429 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-11-07 08:47:08,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:47:08,813 INFO L93 Difference]: Finished difference Result 10955 states and 17866 transitions. [2018-11-07 08:47:08,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 08:47:08,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2018-11-07 08:47:08,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:47:08,862 INFO L225 Difference]: With dead ends: 10955 [2018-11-07 08:47:08,863 INFO L226 Difference]: Without dead ends: 7274 [2018-11-07 08:47:08,876 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:47:08,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2018-11-07 08:47:09,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 7167. [2018-11-07 08:47:09,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7167 states. [2018-11-07 08:47:09,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 10519 transitions. [2018-11-07 08:47:09,089 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 10519 transitions. Word has length 116 [2018-11-07 08:47:09,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:47:09,090 INFO L480 AbstractCegarLoop]: Abstraction has 7167 states and 10519 transitions. [2018-11-07 08:47:09,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:47:09,090 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 10519 transitions. [2018-11-07 08:47:09,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-11-07 08:47:09,096 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:47:09,096 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:47:09,096 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:47:09,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:47:09,097 INFO L82 PathProgramCache]: Analyzing trace with hash -2080422020, now seen corresponding path program 1 times [2018-11-07 08:47:09,097 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:47:09,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:47:09,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:47:09,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:47:09,098 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:47:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:47:09,408 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:47:09,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:47:09,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:47:09,409 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:47:09,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:47:09,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:47:09,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:47:09,410 INFO L87 Difference]: Start difference. First operand 7167 states and 10519 transitions. Second operand 6 states. [2018-11-07 08:47:10,155 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-07 08:47:24,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:47:24,432 INFO L93 Difference]: Finished difference Result 18104 states and 26170 transitions. [2018-11-07 08:47:24,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 08:47:24,433 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2018-11-07 08:47:24,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:47:24,498 INFO L225 Difference]: With dead ends: 18104 [2018-11-07 08:47:24,498 INFO L226 Difference]: Without dead ends: 10943 [2018-11-07 08:47:24,531 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:47:24,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10943 states. [2018-11-07 08:47:24,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10943 to 10593. [2018-11-07 08:47:24,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10593 states. [2018-11-07 08:47:24,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10593 states to 10593 states and 14759 transitions. [2018-11-07 08:47:24,833 INFO L78 Accepts]: Start accepts. Automaton has 10593 states and 14759 transitions. Word has length 160 [2018-11-07 08:47:24,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:47:24,833 INFO L480 AbstractCegarLoop]: Abstraction has 10593 states and 14759 transitions. [2018-11-07 08:47:24,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:47:24,834 INFO L276 IsEmpty]: Start isEmpty. Operand 10593 states and 14759 transitions. [2018-11-07 08:47:24,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-07 08:47:24,838 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:47:24,839 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:47:24,839 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:47:24,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:47:24,840 INFO L82 PathProgramCache]: Analyzing trace with hash 2003986425, now seen corresponding path program 1 times [2018-11-07 08:47:24,840 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:47:24,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:47:24,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:47:24,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:47:24,841 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:47:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:47:25,166 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:47:25,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:47:25,167 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:47:25,168 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 175 with the following transitions: [2018-11-07 08:47:25,170 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2879], [2881], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3409], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 08:47:25,222 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:47:25,222 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:47:26,752 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:47:26,753 INFO L272 AbstractInterpreter]: Visited 138 different actions 400 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 08:47:26,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:47:26,799 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:47:26,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:47:26,799 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 08:47:26,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:47:26,813 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:47:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:47:26,902 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:47:27,112 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:47:27,112 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:47:27,452 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:47:27,485 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 08:47:27,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-11-07 08:47:27,486 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:47:27,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:47:27,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:47:27,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-11-07 08:47:27,488 INFO L87 Difference]: Start difference. First operand 10593 states and 14759 transitions. Second operand 6 states. [2018-11-07 08:47:44,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:47:44,210 INFO L93 Difference]: Finished difference Result 38939 states and 58362 transitions. [2018-11-07 08:47:44,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 08:47:44,213 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2018-11-07 08:47:44,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:47:44,370 INFO L225 Difference]: With dead ends: 38939 [2018-11-07 08:47:44,370 INFO L226 Difference]: Without dead ends: 29161 [2018-11-07 08:47:44,441 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 346 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-11-07 08:47:44,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29161 states. [2018-11-07 08:47:45,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29161 to 28932. [2018-11-07 08:47:45,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28932 states. [2018-11-07 08:47:45,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28932 states to 28932 states and 41232 transitions. [2018-11-07 08:47:45,213 INFO L78 Accepts]: Start accepts. Automaton has 28932 states and 41232 transitions. Word has length 174 [2018-11-07 08:47:45,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:47:45,215 INFO L480 AbstractCegarLoop]: Abstraction has 28932 states and 41232 transitions. [2018-11-07 08:47:45,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:47:45,215 INFO L276 IsEmpty]: Start isEmpty. Operand 28932 states and 41232 transitions. [2018-11-07 08:47:45,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-11-07 08:47:45,221 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:47:45,221 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:47:45,222 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:47:45,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:47:45,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1640504864, now seen corresponding path program 1 times [2018-11-07 08:47:45,222 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:47:45,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:47:45,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:47:45,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:47:45,224 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:47:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:47:45,509 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:47:45,909 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 74 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:47:45,909 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:47:45,909 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:47:45,910 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 195 with the following transitions: [2018-11-07 08:47:45,910 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2879], [2881], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3128], [3129], [3133], [3137], [3148], [3152], [3156], [3159], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 08:47:45,924 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:47:45,924 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:47:50,743 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:47:50,743 INFO L272 AbstractInterpreter]: Visited 83 different actions 83 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 08:47:50,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:47:50,781 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:47:53,832 INFO L227 lantSequenceWeakener]: Weakened 185 states. On average, predicates are now at 71.28% of their original sizes. [2018-11-07 08:47:53,833 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:47:53,923 INFO L415 sIntCurrentIteration]: We unified 193 AI predicates to 193 [2018-11-07 08:47:53,924 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:47:53,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:47:53,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 08:47:53,925 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:47:53,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:47:53,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:47:53,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:47:53,926 INFO L87 Difference]: Start difference. First operand 28932 states and 41232 transitions. Second operand 6 states. Received shutdown request... [2018-11-07 08:50:10,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 08:50:10,984 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 08:50:10,990 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 08:50:10,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:50:10 BoogieIcfgContainer [2018-11-07 08:50:10,991 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 08:50:10,991 INFO L168 Benchmark]: Toolchain (without parser) took 232334.79 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.8 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-07 08:50:10,993 INFO L168 Benchmark]: CDTParser took 0.19 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 08:50:10,993 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2707.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-07 08:50:10,994 INFO L168 Benchmark]: Boogie Procedure Inliner took 446.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 799.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2018-11-07 08:50:10,995 INFO L168 Benchmark]: Boogie Preprocessor took 312.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. [2018-11-07 08:50:10,996 INFO L168 Benchmark]: RCFGBuilder took 9814.51 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 179.3 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -400.9 kB). Peak memory consumption was 673.4 MB. Max. memory is 7.1 GB. [2018-11-07 08:50:10,997 INFO L168 Benchmark]: TraceAbstraction took 219048.39 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 1.3 GB in the end (delta: 951.2 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-07 08:50:11,002 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 2707.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 446.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 799.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 312.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9814.51 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 179.3 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -400.9 kB). Peak memory consumption was 673.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219048.39 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 1.3 GB in the end (delta: 951.2 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 123). Cancelled while BasicCegarLoop was constructing difference of abstraction (28932states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (46881 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 218.9s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 204.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2975 SDtfs, 17978 SDslu, 2988 SDs, 0 SdLazy, 33242 SolverSat, 7826 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 176.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 584 GetRequests, 546 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28932occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.5s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9973333811191438 AbsIntWeakeningRatio, 0.13989637305699482 AbsIntAvgWeakeningVarsNumRemoved, 16.253886010362695 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 1558 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 976 NumberOfCodeBlocks, 976 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1142 ConstructedInterpolants, 0 QuantifiedInterpolants, 800138 SizeOfPredicates, 3 NumberOfNonLiveVariables, 345 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 235/368 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown