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/Problem18_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:42:08,559 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:42:08,561 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:42:08,579 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:42:08,580 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:42:08,581 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:42:08,584 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:42:08,587 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:42:08,589 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:42:08,594 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:42:08,595 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:42:08,600 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:42:08,601 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:42:08,604 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:42:08,605 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:42:08,607 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:42:08,608 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:42:08,610 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:42:08,614 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:42:08,615 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:42:08,616 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:42:08,617 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:42:08,621 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:42:08,621 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:42:08,622 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:42:08,624 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:42:08,624 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:42:08,628 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:42:08,628 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:42:08,629 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:42:08,630 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:42:08,631 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:42:08,631 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:42:08,631 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:42:08,632 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:42:08,632 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:42:08,635 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 09:42:08,657 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:42:08,657 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:42:08,658 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:42:08,658 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:42:08,658 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:42:08,659 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:42:08,659 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:42:08,659 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:42:08,659 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:42:08,659 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:42:08,660 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:42:08,662 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:42:08,662 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:42:08,662 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:42:08,663 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:42:08,663 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:42:08,664 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:42:08,664 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:42:08,664 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:42:08,664 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:42:08,664 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:42:08,665 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:42:08,665 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:42:08,665 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:42:08,665 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:42:08,665 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:42:08,666 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:42:08,666 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:42:08,666 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:42:08,666 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:42:08,666 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:42:08,667 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:42:08,667 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:42:08,667 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:42:08,667 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:42:08,667 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:42:08,722 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:42:08,739 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:42:08,744 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:42:08,745 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:42:08,746 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:42:08,747 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label56_true-unreach-call.c [2018-11-07 09:42:08,809 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/954fd107f/a1a7a34274be4829afa06b5476cb7a20/FLAG332828fdd [2018-11-07 09:42:09,505 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:42:09,506 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label56_true-unreach-call.c [2018-11-07 09:42:09,530 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/954fd107f/a1a7a34274be4829afa06b5476cb7a20/FLAG332828fdd [2018-11-07 09:42:09,547 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/954fd107f/a1a7a34274be4829afa06b5476cb7a20 [2018-11-07 09:42:09,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:42:09,560 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:42:09,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:42:09,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:42:09,566 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:42:09,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:42:09" (1/1) ... [2018-11-07 09:42:09,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a3a9bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:09, skipping insertion in model container [2018-11-07 09:42:09,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:42:09" (1/1) ... [2018-11-07 09:42:09,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:42:09,729 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:42:10,855 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:42:10,860 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:42:11,374 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:42:11,407 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:42:11,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:11 WrapperNode [2018-11-07 09:42:11,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:42:11,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:42:11,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:42:11,409 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:42:11,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:11" (1/1) ... [2018-11-07 09:42:11,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:11" (1/1) ... [2018-11-07 09:42:11,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:42:11,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:42:11,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:42:11,690 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:42:11,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:11" (1/1) ... [2018-11-07 09:42:11,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:11" (1/1) ... [2018-11-07 09:42:11,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:11" (1/1) ... [2018-11-07 09:42:11,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:11" (1/1) ... [2018-11-07 09:42:11,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:11" (1/1) ... [2018-11-07 09:42:11,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:11" (1/1) ... [2018-11-07 09:42:11,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:11" (1/1) ... [2018-11-07 09:42:11,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:42:11,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:42:11,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:42:11,952 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:42:11,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:11" (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 09:42:12,028 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:42:12,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:42:12,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:42:12,029 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 09:42:12,029 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 09:42:12,030 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:42:12,030 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:42:12,030 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:42:12,030 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:42:12,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:42:12,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:42:12,031 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:42:12,032 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:42:20,134 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:42:20,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:42:20 BoogieIcfgContainer [2018-11-07 09:42:20,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:42:20,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:42:20,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:42:20,140 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:42:20,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:42:09" (1/3) ... [2018-11-07 09:42:20,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67dce65e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:42:20, skipping insertion in model container [2018-11-07 09:42:20,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:11" (2/3) ... [2018-11-07 09:42:20,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67dce65e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:42:20, skipping insertion in model container [2018-11-07 09:42:20,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:42:20" (3/3) ... [2018-11-07 09:42:20,144 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label56_true-unreach-call.c [2018-11-07 09:42:20,154 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:42:20,164 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:42:20,182 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:42:20,228 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:42:20,228 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:42:20,228 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:42:20,229 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:42:20,229 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:42:20,229 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:42:20,229 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:42:20,229 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:42:20,277 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 09:42:20,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-07 09:42:20,289 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:42:20,291 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] [2018-11-07 09:42:20,293 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:42:20,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:42:20,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1650138055, now seen corresponding path program 1 times [2018-11-07 09:42:20,302 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:42:20,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:42:20,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:42:20,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:42:20,359 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:42:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:42:20,880 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 09:42:20,932 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 09:42:20,934 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:42:20,935 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:42:20,935 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:42:20,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:42:20,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:42:20,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:42:20,966 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-11-07 09:42:33,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:42:33,692 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-11-07 09:42:33,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:42:33,694 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-11-07 09:42:33,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:42:33,851 INFO L225 Difference]: With dead ends: 2974 [2018-11-07 09:42:33,852 INFO L226 Difference]: Without dead ends: 2193 [2018-11-07 09:42:33,868 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:42:33,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-11-07 09:42:34,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-11-07 09:42:34,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-11-07 09:42:34,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3677 transitions. [2018-11-07 09:42:34,091 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3677 transitions. Word has length 55 [2018-11-07 09:42:34,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:42:34,092 INFO L480 AbstractCegarLoop]: Abstraction has 2193 states and 3677 transitions. [2018-11-07 09:42:34,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:42:34,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3677 transitions. [2018-11-07 09:42:34,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-07 09:42:34,099 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:42:34,100 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, 1, 1, 1, 1, 1, 1, 1, 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 09:42:34,100 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:42:34,101 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:42:34,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1840391000, now seen corresponding path program 1 times [2018-11-07 09:42:34,101 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:42:34,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:42:34,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:42:34,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:42:34,103 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:42:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:42:34,453 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:42:34,683 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:42:34,683 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:42:34,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:42:34,684 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:42:34,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:42:34,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:42:34,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:42:34,687 INFO L87 Difference]: Start difference. First operand 2193 states and 3677 transitions. Second operand 5 states. [2018-11-07 09:42:46,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:42:46,087 INFO L93 Difference]: Finished difference Result 6600 states and 11248 transitions. [2018-11-07 09:42:46,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:42:46,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2018-11-07 09:42:46,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:42:46,130 INFO L225 Difference]: With dead ends: 6600 [2018-11-07 09:42:46,131 INFO L226 Difference]: Without dead ends: 4413 [2018-11-07 09:42:46,140 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:42:46,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-11-07 09:42:46,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-11-07 09:42:46,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-11-07 09:42:46,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6986 transitions. [2018-11-07 09:42:46,304 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6986 transitions. Word has length 125 [2018-11-07 09:42:46,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:42:46,305 INFO L480 AbstractCegarLoop]: Abstraction has 4378 states and 6986 transitions. [2018-11-07 09:42:46,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:42:46,305 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6986 transitions. [2018-11-07 09:42:46,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-11-07 09:42:46,318 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:42:46,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:42:46,319 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:42:46,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:42:46,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1923458833, now seen corresponding path program 1 times [2018-11-07 09:42:46,322 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:42:46,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:42:46,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:42:46,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:42:46,323 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:42:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:42:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:42:46,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:42:46,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:42:46,967 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:42:46,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:42:46,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:42:46,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:42:46,969 INFO L87 Difference]: Start difference. First operand 4378 states and 6986 transitions. Second operand 6 states. [2018-11-07 09:42:53,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:42:53,056 INFO L93 Difference]: Finished difference Result 11002 states and 17598 transitions. [2018-11-07 09:42:53,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:42:53,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2018-11-07 09:42:53,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:42:53,109 INFO L225 Difference]: With dead ends: 11002 [2018-11-07 09:42:53,109 INFO L226 Difference]: Without dead ends: 6630 [2018-11-07 09:42:53,127 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:42:53,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-11-07 09:42:53,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-11-07 09:42:53,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-11-07 09:42:53,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 9022 transitions. [2018-11-07 09:42:53,332 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 9022 transitions. Word has length 152 [2018-11-07 09:42:53,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:42:53,332 INFO L480 AbstractCegarLoop]: Abstraction has 6590 states and 9022 transitions. [2018-11-07 09:42:53,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:42:53,333 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 9022 transitions. [2018-11-07 09:42:53,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-11-07 09:42:53,341 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:42:53,341 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 09:42:53,342 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:42:53,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:42:53,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1294774890, now seen corresponding path program 1 times [2018-11-07 09:42:53,342 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:42:53,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:42:53,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:42:53,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:42:53,346 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:42:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:42:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 09:42:53,610 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:42:53,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:42:53,610 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:42:53,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:42:53,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:42:53,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:42:53,612 INFO L87 Difference]: Start difference. First operand 6590 states and 9022 transitions. Second operand 4 states. [2018-11-07 09:42:59,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:42:59,985 INFO L93 Difference]: Finished difference Result 26034 states and 37031 transitions. [2018-11-07 09:42:59,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:42:59,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 232 [2018-11-07 09:42:59,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:43:00,086 INFO L225 Difference]: With dead ends: 26034 [2018-11-07 09:43:00,087 INFO L226 Difference]: Without dead ends: 19450 [2018-11-07 09:43:00,131 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:43:00,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19450 states. [2018-11-07 09:43:00,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19450 to 19450. [2018-11-07 09:43:00,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19450 states. [2018-11-07 09:43:00,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19450 states to 19450 states and 25983 transitions. [2018-11-07 09:43:00,613 INFO L78 Accepts]: Start accepts. Automaton has 19450 states and 25983 transitions. Word has length 232 [2018-11-07 09:43:00,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:43:00,614 INFO L480 AbstractCegarLoop]: Abstraction has 19450 states and 25983 transitions. [2018-11-07 09:43:00,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:43:00,614 INFO L276 IsEmpty]: Start isEmpty. Operand 19450 states and 25983 transitions. [2018-11-07 09:43:00,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-11-07 09:43:00,627 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:43:00,628 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 09:43:00,628 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:43:00,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:43:00,628 INFO L82 PathProgramCache]: Analyzing trace with hash 2023127083, now seen corresponding path program 1 times [2018-11-07 09:43:00,629 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:43:00,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:43:00,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:43:00,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:43:00,630 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:43:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:43:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:43:01,211 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:43:01,211 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:43:01,212 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 240 with the following transitions: [2018-11-07 09:43:01,215 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1963], [1965], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:43:01,264 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:43:01,264 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:43:01,835 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:43:01,837 INFO L272 AbstractInterpreter]: Visited 112 different actions 112 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:43:01,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:43:01,877 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:43:02,469 INFO L227 lantSequenceWeakener]: Weakened 230 states. On average, predicates are now at 78.04% of their original sizes. [2018-11-07 09:43:02,470 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:43:02,708 INFO L415 sIntCurrentIteration]: We unified 238 AI predicates to 238 [2018-11-07 09:43:02,708 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:43:02,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:43:02,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 09:43:02,709 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:43:02,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:43:02,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:43:02,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:43:02,711 INFO L87 Difference]: Start difference. First operand 19450 states and 25983 transitions. Second operand 6 states. [2018-11-07 09:44:55,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:44:55,423 INFO L93 Difference]: Finished difference Result 39599 states and 52734 transitions. [2018-11-07 09:44:55,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:44:55,423 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 239 [2018-11-07 09:44:55,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:44:55,485 INFO L225 Difference]: With dead ends: 39599 [2018-11-07 09:44:55,486 INFO L226 Difference]: Without dead ends: 20155 [2018-11-07 09:44:55,539 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 239 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:44:55,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20155 states. [2018-11-07 09:44:55,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20155 to 20153. [2018-11-07 09:44:55,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20153 states. [2018-11-07 09:44:55,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20153 states to 20153 states and 26698 transitions. [2018-11-07 09:44:55,943 INFO L78 Accepts]: Start accepts. Automaton has 20153 states and 26698 transitions. Word has length 239 [2018-11-07 09:44:55,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:44:55,944 INFO L480 AbstractCegarLoop]: Abstraction has 20153 states and 26698 transitions. [2018-11-07 09:44:55,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:44:55,944 INFO L276 IsEmpty]: Start isEmpty. Operand 20153 states and 26698 transitions. [2018-11-07 09:44:55,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-11-07 09:44:55,957 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:44:55,957 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:44:55,958 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:44:55,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:44:55,958 INFO L82 PathProgramCache]: Analyzing trace with hash -577564023, now seen corresponding path program 1 times [2018-11-07 09:44:55,959 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:44:55,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:44:55,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:44:55,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:44:55,960 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:44:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:44:56,461 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:44:56,650 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:44:56,869 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:44:57,532 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 203 proven. 197 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:44:57,533 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:44:57,533 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:44:57,533 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 427 with the following transitions: [2018-11-07 09:44:57,534 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1963], [1965], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:44:57,543 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:44:57,543 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:44:57,787 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:44:57,787 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:44:57,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:44:57,816 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:44:58,266 INFO L227 lantSequenceWeakener]: Weakened 423 states. On average, predicates are now at 77.75% of their original sizes. [2018-11-07 09:44:58,266 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:44:58,603 INFO L415 sIntCurrentIteration]: We unified 425 AI predicates to 425 [2018-11-07 09:44:58,604 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:44:58,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:44:58,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2018-11-07 09:44:58,604 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:44:58,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:44:58,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:44:58,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:44:58,606 INFO L87 Difference]: Start difference. First operand 20153 states and 26698 transitions. Second operand 10 states. Received shutdown request... [2018-11-07 09:46:00,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 09:46:00,426 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:46:00,431 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:46:00,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:46:00 BoogieIcfgContainer [2018-11-07 09:46:00,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:46:00,433 INFO L168 Benchmark]: Toolchain (without parser) took 230874.20 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 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-07 09:46:00,434 INFO L168 Benchmark]: CDTParser took 1.04 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 09:46:00,435 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1847.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 09:46:00,436 INFO L168 Benchmark]: Boogie Procedure Inliner took 280.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -964.1 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. [2018-11-07 09:46:00,437 INFO L168 Benchmark]: Boogie Preprocessor took 262.00 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-11-07 09:46:00,438 INFO L168 Benchmark]: RCFGBuilder took 8183.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 509.9 MB). Peak memory consumption was 509.9 MB. Max. memory is 7.1 GB. [2018-11-07 09:46:00,439 INFO L168 Benchmark]: TraceAbstraction took 220295.89 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.9 GB in the end (delta: -1.2 GB). Peak memory consumption was 681.2 MB. Max. memory is 7.1 GB. [2018-11-07 09:46:00,444 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.04 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 1847.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 280.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -964.1 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 262.00 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8183.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 509.9 MB). Peak memory consumption was 509.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220295.89 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.9 GB in the end (delta: -1.2 GB). Peak memory consumption was 681.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 153]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 153). Cancelled while BasicCegarLoop was constructing difference of abstraction (20153states) and FLOYD_HOARE automaton (currently 16 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (29785 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 220.2s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 211.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2493 SDtfs, 13139 SDslu, 1186 SDs, 0 SdLazy, 23077 SolverSat, 4944 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 166.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 703 GetRequests, 662 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20153occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9976405237274804 AbsIntWeakeningRatio, 0.08748114630467571 AbsIntAvgWeakeningVarsNumRemoved, 16.466063348416288 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 77 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1229 NumberOfCodeBlocks, 1229 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1223 ConstructedInterpolants, 0 QuantifiedInterpolants, 1870432 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 641/840 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown