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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label58_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:40:12,782 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:40:12,784 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:40:12,796 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:40:12,797 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:40:12,798 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:40:12,799 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:40:12,801 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:40:12,802 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:40:12,803 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:40:12,804 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:40:12,804 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:40:12,805 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:40:12,806 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:40:12,807 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:40:12,808 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:40:12,809 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:40:12,811 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:40:12,814 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:40:12,821 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:40:12,822 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:40:12,826 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:40:12,829 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 03:40:12,829 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 03:40:12,829 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 03:40:12,830 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 03:40:12,831 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 03:40:12,832 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 03:40:12,835 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 03:40:12,836 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 03:40:12,836 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 03:40:12,837 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 03:40:12,837 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:40:12,838 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:40:12,838 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:40:12,839 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:40:12,839 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:40:12,861 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:40:12,861 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:40:12,862 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:40:12,863 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:40:12,863 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:40:12,863 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:40:12,863 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:40:12,863 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:40:12,864 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:40:12,864 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:40:12,864 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:40:12,864 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:40:12,865 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:40:12,865 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:40:12,865 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:40:12,865 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:40:12,866 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:40:12,866 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:40:12,866 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:40:12,866 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:40:12,866 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:40:12,867 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:40:12,867 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:40:12,867 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:40:12,867 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:40:12,867 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:40:12,868 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:40:12,868 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:40:12,868 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:40:12,868 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:40:12,868 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:40:12,869 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:40:12,869 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:40:12,869 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:40:12,926 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:40:12,943 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:40:12,948 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:40:12,950 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:40:12,950 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:40:12,951 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label58_true-unreach-call.c [2018-11-07 03:40:13,018 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e7de9a2/dc9e35a4549942a39c97d5821275cb71/FLAG8a3c01d57 [2018-11-07 03:40:13,642 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:40:13,643 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label58_true-unreach-call.c [2018-11-07 03:40:13,667 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e7de9a2/dc9e35a4549942a39c97d5821275cb71/FLAG8a3c01d57 [2018-11-07 03:40:13,690 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e7de9a2/dc9e35a4549942a39c97d5821275cb71 [2018-11-07 03:40:13,704 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:40:13,706 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:40:13,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:40:13,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:40:13,712 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:40:13,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:40:13" (1/1) ... [2018-11-07 03:40:13,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36bd1723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:13, skipping insertion in model container [2018-11-07 03:40:13,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:40:13" (1/1) ... [2018-11-07 03:40:13,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:40:13,841 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:40:14,636 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:40:14,640 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:40:14,956 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:40:14,978 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:40:14,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:14 WrapperNode [2018-11-07 03:40:14,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:40:14,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:40:14,980 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:40:14,980 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:40:14,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:14" (1/1) ... [2018-11-07 03:40:15,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:14" (1/1) ... [2018-11-07 03:40:15,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:40:15,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:40:15,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:40:15,180 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:40:15,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:14" (1/1) ... [2018-11-07 03:40:15,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:14" (1/1) ... [2018-11-07 03:40:15,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:14" (1/1) ... [2018-11-07 03:40:15,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:14" (1/1) ... [2018-11-07 03:40:15,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:14" (1/1) ... [2018-11-07 03:40:15,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:14" (1/1) ... [2018-11-07 03:40:15,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:14" (1/1) ... [2018-11-07 03:40:15,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:40:15,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:40:15,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:40:15,358 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:40:15,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:14" (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 03:40:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:40:15,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:40:15,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:40:15,426 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:40:15,426 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:40:15,426 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:40:15,426 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:40:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:40:15,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:40:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:40:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:40:22,287 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:40:22,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:40:22 BoogieIcfgContainer [2018-11-07 03:40:22,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:40:22,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:40:22,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:40:22,294 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:40:22,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:40:13" (1/3) ... [2018-11-07 03:40:22,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d96653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:40:22, skipping insertion in model container [2018-11-07 03:40:22,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:14" (2/3) ... [2018-11-07 03:40:22,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d96653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:40:22, skipping insertion in model container [2018-11-07 03:40:22,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:40:22" (3/3) ... [2018-11-07 03:40:22,300 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label58_true-unreach-call.c [2018-11-07 03:40:22,310 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:40:22,321 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:40:22,340 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:40:22,381 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:40:22,382 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:40:22,382 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:40:22,382 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:40:22,382 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:40:22,382 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:40:22,382 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:40:22,383 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:40:22,418 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 03:40:22,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-07 03:40:22,429 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:40:22,430 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] [2018-11-07 03:40:22,433 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:40:22,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:40:22,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1265036959, now seen corresponding path program 1 times [2018-11-07 03:40:22,441 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:40:22,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:22,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:40:22,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:22,497 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:40:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:40:23,018 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 03:40:23,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:40:23,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:40:23,021 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:40:23,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:40:23,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:40:23,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:40:23,049 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 03:40:29,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:40:29,547 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-07 03:40:29,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:40:29,549 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-11-07 03:40:29,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:40:29,577 INFO L225 Difference]: With dead ends: 1558 [2018-11-07 03:40:29,578 INFO L226 Difference]: Without dead ends: 1114 [2018-11-07 03:40:29,587 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:40:29,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-07 03:40:29,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1091. [2018-11-07 03:40:29,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2018-11-07 03:40:29,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1853 transitions. [2018-11-07 03:40:29,753 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1853 transitions. Word has length 57 [2018-11-07 03:40:29,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:40:29,754 INFO L480 AbstractCegarLoop]: Abstraction has 1091 states and 1853 transitions. [2018-11-07 03:40:29,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:40:29,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1853 transitions. [2018-11-07 03:40:29,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-07 03:40:29,774 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:40:29,775 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, 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] [2018-11-07 03:40:29,775 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:40:29,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:40:29,776 INFO L82 PathProgramCache]: Analyzing trace with hash 569089420, now seen corresponding path program 1 times [2018-11-07 03:40:29,777 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:40:29,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:29,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:40:29,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:29,779 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:40:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:40:30,085 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:40:30,086 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:40:30,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:40:30,086 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:40:30,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:40:30,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:40:30,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:40:30,089 INFO L87 Difference]: Start difference. First operand 1091 states and 1853 transitions. Second operand 5 states. [2018-11-07 03:40:35,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:40:35,377 INFO L93 Difference]: Finished difference Result 3246 states and 5588 transitions. [2018-11-07 03:40:35,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:40:35,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-11-07 03:40:35,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:40:35,401 INFO L225 Difference]: With dead ends: 3246 [2018-11-07 03:40:35,401 INFO L226 Difference]: Without dead ends: 2161 [2018-11-07 03:40:35,408 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:40:35,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2018-11-07 03:40:35,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2114. [2018-11-07 03:40:35,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2018-11-07 03:40:35,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3176 transitions. [2018-11-07 03:40:35,508 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3176 transitions. Word has length 130 [2018-11-07 03:40:35,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:40:35,509 INFO L480 AbstractCegarLoop]: Abstraction has 2114 states and 3176 transitions. [2018-11-07 03:40:35,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:40:35,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3176 transitions. [2018-11-07 03:40:35,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-07 03:40:35,513 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:40:35,514 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, 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 03:40:35,514 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:40:35,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:40:35,514 INFO L82 PathProgramCache]: Analyzing trace with hash 139406748, now seen corresponding path program 1 times [2018-11-07 03:40:35,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:40:35,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:35,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:40:35,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:35,516 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:40:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:40:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:40:35,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:40:35,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:40:35,668 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:40:35,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:40:35,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:40:35,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:40:35,669 INFO L87 Difference]: Start difference. First operand 2114 states and 3176 transitions. Second operand 4 states. [2018-11-07 03:40:40,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:40:40,456 INFO L93 Difference]: Finished difference Result 7942 states and 12442 transitions. [2018-11-07 03:40:40,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:40:40,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2018-11-07 03:40:40,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:40:40,506 INFO L225 Difference]: With dead ends: 7942 [2018-11-07 03:40:40,506 INFO L226 Difference]: Without dead ends: 5834 [2018-11-07 03:40:40,534 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 03:40:40,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5834 states. [2018-11-07 03:40:40,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 5834. [2018-11-07 03:40:40,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5834 states. [2018-11-07 03:40:40,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 8160 transitions. [2018-11-07 03:40:40,721 INFO L78 Accepts]: Start accepts. Automaton has 5834 states and 8160 transitions. Word has length 138 [2018-11-07 03:40:40,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:40:40,722 INFO L480 AbstractCegarLoop]: Abstraction has 5834 states and 8160 transitions. [2018-11-07 03:40:40,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:40:40,722 INFO L276 IsEmpty]: Start isEmpty. Operand 5834 states and 8160 transitions. [2018-11-07 03:40:40,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-11-07 03:40:40,734 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:40:40,734 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:40:40,735 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:40:40,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:40:40,735 INFO L82 PathProgramCache]: Analyzing trace with hash -23603164, now seen corresponding path program 1 times [2018-11-07 03:40:40,735 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:40:40,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:40,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:40:40,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:40,736 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:40:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:40:41,068 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:40:41,180 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:40:41,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:40:41,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:40:41,181 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:40:41,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:40:41,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:40:41,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:40:41,182 INFO L87 Difference]: Start difference. First operand 5834 states and 8160 transitions. Second operand 6 states. [2018-11-07 03:40:46,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:40:46,131 INFO L93 Difference]: Finished difference Result 15454 states and 22423 transitions. [2018-11-07 03:40:46,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:40:46,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 226 [2018-11-07 03:40:46,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:40:46,190 INFO L225 Difference]: With dead ends: 15454 [2018-11-07 03:40:46,190 INFO L226 Difference]: Without dead ends: 9626 [2018-11-07 03:40:46,246 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:40:46,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9626 states. [2018-11-07 03:40:46,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9626 to 9588. [2018-11-07 03:40:46,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9588 states. [2018-11-07 03:40:46,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9588 states to 9588 states and 12974 transitions. [2018-11-07 03:40:46,494 INFO L78 Accepts]: Start accepts. Automaton has 9588 states and 12974 transitions. Word has length 226 [2018-11-07 03:40:46,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:40:46,495 INFO L480 AbstractCegarLoop]: Abstraction has 9588 states and 12974 transitions. [2018-11-07 03:40:46,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:40:46,496 INFO L276 IsEmpty]: Start isEmpty. Operand 9588 states and 12974 transitions. [2018-11-07 03:40:46,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-11-07 03:40:46,511 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:40:46,511 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:40:46,512 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:40:46,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:40:46,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1826308229, now seen corresponding path program 1 times [2018-11-07 03:40:46,512 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:40:46,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:46,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:40:46,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:46,514 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:40:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:40:46,790 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:40:47,215 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 100 proven. 78 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 03:40:47,215 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:40:47,216 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:40:47,217 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 228 with the following transitions: [2018-11-07 03:40:47,219 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [625], [626], [630], [633], [638], [640], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 03:40:47,306 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:40:47,307 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:40:49,208 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:40:49,210 INFO L272 AbstractInterpreter]: Visited 90 different actions 90 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 03:40:49,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:40:49,217 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:40:51,000 INFO L227 lantSequenceWeakener]: Weakened 217 states. On average, predicates are now at 78.18% of their original sizes. [2018-11-07 03:40:51,001 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:40:51,461 INFO L415 sIntCurrentIteration]: We unified 226 AI predicates to 226 [2018-11-07 03:40:51,461 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:40:51,465 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:40:51,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 03:40:51,466 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:40:51,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 03:40:51,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 03:40:51,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 03:40:51,467 INFO L87 Difference]: Start difference. First operand 9588 states and 12974 transitions. Second operand 7 states. [2018-11-07 03:40:53,919 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:41:28,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:41:28,115 INFO L93 Difference]: Finished difference Result 19480 states and 26317 transitions. [2018-11-07 03:41:28,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:41:28,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2018-11-07 03:41:28,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:41:28,159 INFO L225 Difference]: With dead ends: 19480 [2018-11-07 03:41:28,159 INFO L226 Difference]: Without dead ends: 9898 [2018-11-07 03:41:28,184 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 227 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:41:28,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9898 states. [2018-11-07 03:41:28,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9898 to 9896. [2018-11-07 03:41:28,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9896 states. [2018-11-07 03:41:28,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9896 states to 9896 states and 13291 transitions. [2018-11-07 03:41:28,437 INFO L78 Accepts]: Start accepts. Automaton has 9896 states and 13291 transitions. Word has length 227 [2018-11-07 03:41:28,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:41:28,438 INFO L480 AbstractCegarLoop]: Abstraction has 9896 states and 13291 transitions. [2018-11-07 03:41:28,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 03:41:28,438 INFO L276 IsEmpty]: Start isEmpty. Operand 9896 states and 13291 transitions. [2018-11-07 03:41:28,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-11-07 03:41:28,456 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:41:28,456 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, 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, 3, 3, 3, 3, 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] [2018-11-07 03:41:28,457 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:41:28,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:41:28,457 INFO L82 PathProgramCache]: Analyzing trace with hash 2005617649, now seen corresponding path program 1 times [2018-11-07 03:41:28,457 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:41:28,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:41:28,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:41:28,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:41:28,459 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:41:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:41:28,785 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:41:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 156 proven. 227 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-07 03:41:29,290 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:41:29,290 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:41:29,290 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 324 with the following transitions: [2018-11-07 03:41:29,291 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [625], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 03:41:29,297 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:41:29,297 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:41:30,630 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:41:35,786 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:41:35,787 INFO L272 AbstractInterpreter]: Visited 105 different actions 302 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 03:41:35,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:41:35,821 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:41:38,500 INFO L227 lantSequenceWeakener]: Weakened 63 states. On average, predicates are now at 78.21% of their original sizes. [2018-11-07 03:41:38,501 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:43:10,063 INFO L415 sIntCurrentIteration]: We unified 322 AI predicates to 322 [2018-11-07 03:43:10,063 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:43:10,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:43:10,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-07 03:43:10,064 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:43:10,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 03:43:10,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 03:43:10,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2018-11-07 03:43:10,066 INFO L87 Difference]: Start difference. First operand 9896 states and 13291 transitions. Second operand 17 states. Received shutdown request... [2018-11-07 03:44:08,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 03:44:08,039 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:44:08,046 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:44:08,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:44:08 BoogieIcfgContainer [2018-11-07 03:44:08,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:44:08,047 INFO L168 Benchmark]: Toolchain (without parser) took 234342.53 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 239.7 MB. Max. memory is 7.1 GB. [2018-11-07 03:44:08,049 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:44:08,049 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1272.37 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-07 03:44:08,050 INFO L168 Benchmark]: Boogie Procedure Inliner took 199.57 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 774.4 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -921.6 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:44:08,051 INFO L168 Benchmark]: Boogie Preprocessor took 177.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:44:08,052 INFO L168 Benchmark]: RCFGBuilder took 6931.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 303.6 MB). Peak memory consumption was 303.6 MB. Max. memory is 7.1 GB. [2018-11-07 03:44:08,053 INFO L168 Benchmark]: TraceAbstraction took 225756.76 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.3 GB). Free memory was 1.9 GB in the beginning and 3.3 GB in the end (delta: -1.4 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:44:08,059 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1272.37 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 199.57 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 774.4 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -921.6 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 177.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6931.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 303.6 MB). Peak memory consumption was 303.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225756.76 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.3 GB). Free memory was 1.9 GB in the beginning and 3.3 GB in the end (delta: -1.4 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 157]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 157). Cancelled while BasicCegarLoop was constructing difference of abstraction (9896states) and FLOYD_HOARE automaton (currently 18 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (209 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 225.6s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 116.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1353 SDtfs, 6193 SDslu, 967 SDs, 0 SdLazy, 9417 SolverSat, 2412 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 587 GetRequests, 417 SyntacticMatches, 124 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 94.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9896occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9956991166825346 AbsIntWeakeningRatio, 0.10948905109489052 AbsIntAvgWeakeningVarsNumRemoved, 607.1350364963504 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 110 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1101 NumberOfCodeBlocks, 1101 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1095 ConstructedInterpolants, 0 QuantifiedInterpolants, 907268 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 429/734 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown