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/Problem02_label24_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:26:10,346 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:26:10,349 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:26:10,364 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:26:10,365 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:26:10,366 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:26:10,368 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:26:10,371 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:26:10,375 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:26:10,376 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:26:10,377 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:26:10,377 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:26:10,378 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:26:10,379 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:26:10,388 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:26:10,389 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:26:10,394 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:26:10,395 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:26:10,400 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:26:10,402 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:26:10,406 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:26:10,407 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:26:10,411 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 19:26:10,414 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 19:26:10,415 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 19:26:10,416 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 19:26:10,417 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 19:26:10,420 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 19:26:10,421 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 19:26:10,422 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 19:26:10,424 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 19:26:10,425 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 19:26:10,425 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 19:26:10,425 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 19:26:10,426 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 19:26:10,428 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 19:26:10,429 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 [2018-10-24 19:26:10,458 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:26:10,459 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:26:10,459 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:26:10,460 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:26:10,460 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:26:10,460 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:26:10,460 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:26:10,460 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:26:10,461 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:26:10,461 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:26:10,461 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:26:10,461 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:26:10,462 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:26:10,462 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:26:10,462 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:26:10,462 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:26:10,463 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:26:10,463 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:26:10,463 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:26:10,463 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:26:10,463 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:26:10,464 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:26:10,464 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:26:10,464 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:26:10,464 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:26:10,464 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:26:10,465 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:26:10,465 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:26:10,465 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:26:10,465 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:26:10,465 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:26:10,466 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:26:10,466 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:26:10,466 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:26:10,528 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:26:10,542 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:26:10,546 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:26:10,548 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:26:10,548 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:26:10,549 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label24_true-unreach-call_false-termination.c [2018-10-24 19:26:10,615 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/183de7fb7/fced4f8fd9cc4e56aef8d88b72e114d5/FLAG3a8ff5e7e [2018-10-24 19:26:11,240 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:26:11,241 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label24_true-unreach-call_false-termination.c [2018-10-24 19:26:11,260 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/183de7fb7/fced4f8fd9cc4e56aef8d88b72e114d5/FLAG3a8ff5e7e [2018-10-24 19:26:11,283 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/183de7fb7/fced4f8fd9cc4e56aef8d88b72e114d5 [2018-10-24 19:26:11,296 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:26:11,299 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:26:11,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:26:11,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:26:11,304 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:26:11,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:26:11" (1/1) ... [2018-10-24 19:26:11,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a25570f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:26:11, skipping insertion in model container [2018-10-24 19:26:11,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:26:11" (1/1) ... [2018-10-24 19:26:11,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:26:11,394 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:26:11,853 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:26:11,861 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:26:11,992 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:26:12,012 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:26:12,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:26:12 WrapperNode [2018-10-24 19:26:12,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:26:12,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:26:12,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:26:12,014 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:26:12,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:26:12" (1/1) ... [2018-10-24 19:26:12,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:26:12" (1/1) ... [2018-10-24 19:26:12,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:26:12,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:26:12,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:26:12,193 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:26:12,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:26:12" (1/1) ... [2018-10-24 19:26:12,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:26:12" (1/1) ... [2018-10-24 19:26:12,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:26:12" (1/1) ... [2018-10-24 19:26:12,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:26:12" (1/1) ... [2018-10-24 19:26:12,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:26:12" (1/1) ... [2018-10-24 19:26:12,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:26:12" (1/1) ... [2018-10-24 19:26:12,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:26:12" (1/1) ... [2018-10-24 19:26:12,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:26:12,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:26:12,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:26:12,271 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:26:12,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:26:12" (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 [2018-10-24 19:26:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:26:12,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:26:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:26:12,344 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:26:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:26:12,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:26:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:26:12,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:26:15,640 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:26:15,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:26:15 BoogieIcfgContainer [2018-10-24 19:26:15,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:26:15,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:26:15,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:26:15,650 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:26:15,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:26:11" (1/3) ... [2018-10-24 19:26:15,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207bf428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:26:15, skipping insertion in model container [2018-10-24 19:26:15,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:26:12" (2/3) ... [2018-10-24 19:26:15,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207bf428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:26:15, skipping insertion in model container [2018-10-24 19:26:15,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:26:15" (3/3) ... [2018-10-24 19:26:15,655 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label24_true-unreach-call_false-termination.c [2018-10-24 19:26:15,664 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:26:15,673 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:26:15,690 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:26:15,728 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:26:15,729 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:26:15,729 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:26:15,729 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:26:15,729 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:26:15,730 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:26:15,730 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:26:15,730 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:26:15,769 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-24 19:26:15,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-24 19:26:15,788 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:26:15,793 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] [2018-10-24 19:26:15,796 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:26:15,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:26:15,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1658764377, now seen corresponding path program 1 times [2018-10-24 19:26:15,807 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:26:15,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:26:15,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:26:15,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:26:15,858 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:26:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:26:16,467 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:26:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:26:16,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:26:16,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:26:16,537 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:26:16,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:26:16,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:26:16,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:26:16,562 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-24 19:26:18,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:26:18,111 INFO L93 Difference]: Finished difference Result 621 states and 1060 transitions. [2018-10-24 19:26:18,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:26:18,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2018-10-24 19:26:18,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:26:18,135 INFO L225 Difference]: With dead ends: 621 [2018-10-24 19:26:18,135 INFO L226 Difference]: Without dead ends: 382 [2018-10-24 19:26:18,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:26:18,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-24 19:26:18,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 381. [2018-10-24 19:26:18,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-10-24 19:26:18,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 637 transitions. [2018-10-24 19:26:18,223 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 637 transitions. Word has length 121 [2018-10-24 19:26:18,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:26:18,224 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 637 transitions. [2018-10-24 19:26:18,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:26:18,225 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 637 transitions. [2018-10-24 19:26:18,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-24 19:26:18,234 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:26:18,234 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 19:26:18,235 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:26:18,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:26:18,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1422747334, now seen corresponding path program 1 times [2018-10-24 19:26:18,235 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:26:18,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:26:18,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:26:18,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:26:18,237 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:26:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:26:18,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:26:18,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:26:18,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:26:18,814 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:26:18,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:26:18,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:26:18,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:26:18,817 INFO L87 Difference]: Start difference. First operand 381 states and 637 transitions. Second operand 5 states. [2018-10-24 19:26:20,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:26:20,319 INFO L93 Difference]: Finished difference Result 901 states and 1555 transitions. [2018-10-24 19:26:20,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:26:20,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-10-24 19:26:20,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:26:20,328 INFO L225 Difference]: With dead ends: 901 [2018-10-24 19:26:20,328 INFO L226 Difference]: Without dead ends: 380 [2018-10-24 19:26:20,334 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:26:20,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2018-10-24 19:26:20,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2018-10-24 19:26:20,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2018-10-24 19:26:20,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 632 transitions. [2018-10-24 19:26:20,358 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 632 transitions. Word has length 130 [2018-10-24 19:26:20,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:26:20,359 INFO L481 AbstractCegarLoop]: Abstraction has 380 states and 632 transitions. [2018-10-24 19:26:20,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:26:20,359 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 632 transitions. [2018-10-24 19:26:20,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-24 19:26:20,363 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:26:20,363 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:26:20,363 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:26:20,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:26:20,364 INFO L82 PathProgramCache]: Analyzing trace with hash -2099227971, now seen corresponding path program 1 times [2018-10-24 19:26:20,364 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:26:20,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:26:20,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:26:20,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:26:20,366 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:26:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:26:20,657 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:26:21,076 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:26:21,077 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:26:21,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:26:21,078 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:26:21,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:26:21,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:26:21,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:26:21,083 INFO L87 Difference]: Start difference. First operand 380 states and 632 transitions. Second operand 6 states. [2018-10-24 19:26:23,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:26:23,642 INFO L93 Difference]: Finished difference Result 1184 states and 2066 transitions. [2018-10-24 19:26:23,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:26:23,642 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2018-10-24 19:26:23,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:26:23,650 INFO L225 Difference]: With dead ends: 1184 [2018-10-24 19:26:23,654 INFO L226 Difference]: Without dead ends: 810 [2018-10-24 19:26:23,658 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:26:23,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2018-10-24 19:26:23,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 800. [2018-10-24 19:26:23,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 800 states. [2018-10-24 19:26:23,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1274 transitions. [2018-10-24 19:26:23,720 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1274 transitions. Word has length 155 [2018-10-24 19:26:23,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:26:23,721 INFO L481 AbstractCegarLoop]: Abstraction has 800 states and 1274 transitions. [2018-10-24 19:26:23,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:26:23,721 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1274 transitions. [2018-10-24 19:26:23,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-24 19:26:23,725 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:26:23,725 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:26:23,725 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:26:23,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:26:23,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1213735243, now seen corresponding path program 1 times [2018-10-24 19:26:23,726 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:26:23,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:26:23,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:26:23,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:26:23,727 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:26:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:26:23,921 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:26:23,922 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:26:23,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:26:23,922 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:26:23,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:26:23,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:26:23,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:26:23,923 INFO L87 Difference]: Start difference. First operand 800 states and 1274 transitions. Second operand 3 states. [2018-10-24 19:26:25,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:26:25,690 INFO L93 Difference]: Finished difference Result 2306 states and 3791 transitions. [2018-10-24 19:26:25,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:26:25,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2018-10-24 19:26:25,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:26:25,711 INFO L225 Difference]: With dead ends: 2306 [2018-10-24 19:26:25,711 INFO L226 Difference]: Without dead ends: 1512 [2018-10-24 19:26:25,715 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:26:25,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2018-10-24 19:26:25,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1507. [2018-10-24 19:26:25,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1507 states. [2018-10-24 19:26:25,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 2312 transitions. [2018-10-24 19:26:25,778 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 2312 transitions. Word has length 156 [2018-10-24 19:26:25,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:26:25,779 INFO L481 AbstractCegarLoop]: Abstraction has 1507 states and 2312 transitions. [2018-10-24 19:26:25,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:26:25,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 2312 transitions. [2018-10-24 19:26:25,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-24 19:26:25,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:26:25,786 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:26:25,786 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:26:25,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:26:25,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1427113375, now seen corresponding path program 1 times [2018-10-24 19:26:25,787 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:26:25,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:26:25,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:26:25,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:26:25,788 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:26:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:26:26,102 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2018-10-24 19:26:26,159 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 44 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:26:26,159 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:26:26,159 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:26:26,160 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 174 with the following transitions: [2018-10-24 19:26:26,162 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [198], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [639], [641], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:26:26,249 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:26:26,249 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:26:50,018 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:26:50,019 INFO L272 AbstractInterpreter]: Visited 124 different actions 242 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2018-10-24 19:26:50,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:26:50,033 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:26:55,112 INFO L232 lantSequenceWeakener]: Weakened 62 states. On average, predicates are now at 82.39% of their original sizes. [2018-10-24 19:26:55,113 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:27:42,717 INFO L413 sIntCurrentIteration]: We have 172 unified AI predicates [2018-10-24 19:27:42,717 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:27:42,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:27:42,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-24 19:27:42,719 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:27:42,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 19:27:42,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 19:27:42,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2018-10-24 19:27:42,720 INFO L87 Difference]: Start difference. First operand 1507 states and 2312 transitions. Second operand 18 states. Received shutdown request... [2018-10-24 19:30:31,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-24 19:30:31,840 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:30:31,846 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:30:31,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:30:31 BoogieIcfgContainer [2018-10-24 19:30:31,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:30:31,849 INFO L168 Benchmark]: Toolchain (without parser) took 260552.26 ms. Allocated memory was 1.5 GB in the beginning and 2.9 GB in the end (delta: 1.4 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -284.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 19:30:31,850 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-24 19:30:31,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:30:31,852 INFO L168 Benchmark]: Boogie Procedure Inliner took 179.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:30:31,853 INFO L168 Benchmark]: Boogie Preprocessor took 77.11 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:30:31,853 INFO L168 Benchmark]: RCFGBuilder took 3373.54 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 117.7 MB). Peak memory consumption was 117.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:30:31,854 INFO L168 Benchmark]: TraceAbstraction took 256201.42 ms. Allocated memory was 2.3 GB in the beginning and 2.9 GB in the end (delta: 645.4 MB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 358.5 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-24 19:30:31,862 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 713.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 179.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.11 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3373.54 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 117.7 MB). Peak memory consumption was 117.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 256201.42 ms. Allocated memory was 2.3 GB in the beginning and 2.9 GB in the end (delta: 645.4 MB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 358.5 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 514]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 514). Cancelled while BasicCegarLoop was constructing difference of abstraction (1507states) and FLOYD_HOARE automaton (currently 24 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (1759 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 256.1s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 176.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 897 SDtfs, 2997 SDslu, 344 SDs, 0 SdLazy, 3475 SolverSat, 791 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 69.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 208 GetRequests, 142 SyntacticMatches, 28 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 56.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1507occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 23.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9955464950874989 AbsIntWeakeningRatio, 0.1569767441860465 AbsIntAvgWeakeningVarsNumRemoved, 1404.7848837209303 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 735 NumberOfCodeBlocks, 735 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 730 ConstructedInterpolants, 0 QuantifiedInterpolants, 495484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 113/118 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown