java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 02:30:40,742 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 02:30:40,747 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 02:30:40,765 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 02:30:40,766 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 02:30:40,768 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 02:30:40,771 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 02:30:40,773 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 02:30:40,775 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 02:30:40,776 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 02:30:40,779 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 02:30:40,779 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 02:30:40,780 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 02:30:40,781 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 02:30:40,784 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 02:30:40,792 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 02:30:40,793 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 02:30:40,796 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 02:30:40,798 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 02:30:40,802 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 02:30:40,803 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 02:30:40,806 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 02:30:40,808 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 02:30:40,809 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 02:30:40,809 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 02:30:40,810 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 02:30:40,811 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 02:30:40,812 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 02:30:40,812 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 02:30:40,816 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 02:30:40,816 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 02:30:40,817 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 02:30:40,817 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 02:30:40,817 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 02:30:40,818 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 02:30:40,818 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 02:30:40,819 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 02:30:40,834 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 02:30:40,834 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 02:30:40,835 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 02:30:40,835 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 02:30:40,835 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 02:30:40,835 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 02:30:40,835 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 02:30:40,838 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 02:30:40,838 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 02:30:40,838 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 02:30:40,838 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 02:30:40,839 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 02:30:40,839 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 02:30:40,840 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 02:30:40,841 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 02:30:40,841 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 02:30:40,841 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 02:30:40,841 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 02:30:40,842 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 02:30:40,842 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 02:30:40,842 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 02:30:40,842 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 02:30:40,842 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 02:30:40,843 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 02:30:40,844 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 02:30:40,844 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 02:30:40,844 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 02:30:40,845 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 02:30:40,845 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 02:30:40,845 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 02:30:40,845 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 02:30:40,845 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 02:30:40,846 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 02:30:40,846 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 02:30:40,902 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 02:30:40,914 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 02:30:40,918 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 02:30:40,920 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 02:30:40,920 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 02:30:40,921 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label11_true-unreach-call.c [2018-10-27 02:30:40,987 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/62fd209d7/a654bb7bd4c74f8f8a80d9b9289cc608/FLAG4afe73e4c [2018-10-27 02:30:41,571 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 02:30:41,572 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label11_true-unreach-call.c [2018-10-27 02:30:41,589 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/62fd209d7/a654bb7bd4c74f8f8a80d9b9289cc608/FLAG4afe73e4c [2018-10-27 02:30:41,612 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/62fd209d7/a654bb7bd4c74f8f8a80d9b9289cc608 [2018-10-27 02:30:41,625 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 02:30:41,628 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 02:30:41,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 02:30:41,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 02:30:41,636 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 02:30:41,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:30:41" (1/1) ... [2018-10-27 02:30:41,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8cfec52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:41, skipping insertion in model container [2018-10-27 02:30:41,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:30:41" (1/1) ... [2018-10-27 02:30:41,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 02:30:41,743 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 02:30:42,419 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:30:42,424 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 02:30:42,589 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:30:42,608 INFO L193 MainTranslator]: Completed translation [2018-10-27 02:30:42,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:42 WrapperNode [2018-10-27 02:30:42,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 02:30:42,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 02:30:42,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 02:30:42,611 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 02:30:42,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:42" (1/1) ... [2018-10-27 02:30:42,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:42" (1/1) ... [2018-10-27 02:30:42,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 02:30:42,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 02:30:42,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 02:30:42,895 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 02:30:42,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:42" (1/1) ... [2018-10-27 02:30:42,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:42" (1/1) ... [2018-10-27 02:30:42,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:42" (1/1) ... [2018-10-27 02:30:42,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:42" (1/1) ... [2018-10-27 02:30:42,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:42" (1/1) ... [2018-10-27 02:30:43,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:42" (1/1) ... [2018-10-27 02:30:43,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:42" (1/1) ... [2018-10-27 02:30:43,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 02:30:43,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 02:30:43,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 02:30:43,044 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 02:30:43,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 02:30:43,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 02:30:43,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 02:30:43,107 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 02:30:43,107 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 02:30:43,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 02:30:43,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 02:30:43,108 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 02:30:43,108 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 02:30:47,389 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 02:30:47,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:30:47 BoogieIcfgContainer [2018-10-27 02:30:47,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 02:30:47,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 02:30:47,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 02:30:47,400 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 02:30:47,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:30:41" (1/3) ... [2018-10-27 02:30:47,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2ca42d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:30:47, skipping insertion in model container [2018-10-27 02:30:47,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:42" (2/3) ... [2018-10-27 02:30:47,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2ca42d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:30:47, skipping insertion in model container [2018-10-27 02:30:47,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:30:47" (3/3) ... [2018-10-27 02:30:47,405 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label11_true-unreach-call.c [2018-10-27 02:30:47,414 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 02:30:47,426 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 02:30:47,446 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 02:30:47,500 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 02:30:47,501 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 02:30:47,501 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 02:30:47,501 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 02:30:47,501 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 02:30:47,501 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 02:30:47,502 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 02:30:47,502 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 02:30:47,532 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-27 02:30:47,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-27 02:30:47,543 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:30:47,545 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:30:47,548 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:30:47,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:30:47,554 INFO L82 PathProgramCache]: Analyzing trace with hash 586215740, now seen corresponding path program 1 times [2018-10-27 02:30:47,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:30:47,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:30:47,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:30:47,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:30:47,606 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:30:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:30:48,076 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 02:30:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:30:48,207 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:30:48,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 02:30:48,208 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:30:48,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 02:30:48,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 02:30:48,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 02:30:48,235 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-10-27 02:30:50,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:30:50,428 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-10-27 02:30:50,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 02:30:50,430 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2018-10-27 02:30:50,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:30:50,453 INFO L225 Difference]: With dead ends: 782 [2018-10-27 02:30:50,453 INFO L226 Difference]: Without dead ends: 487 [2018-10-27 02:30:50,463 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 02:30:50,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-10-27 02:30:50,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-10-27 02:30:50,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-10-27 02:30:50,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 843 transitions. [2018-10-27 02:30:50,555 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 843 transitions. Word has length 68 [2018-10-27 02:30:50,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:30:50,556 INFO L481 AbstractCegarLoop]: Abstraction has 482 states and 843 transitions. [2018-10-27 02:30:50,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 02:30:50,556 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 843 transitions. [2018-10-27 02:30:50,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-27 02:30:50,565 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:30:50,566 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, 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] [2018-10-27 02:30:50,566 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:30:50,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:30:50,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1561490343, now seen corresponding path program 1 times [2018-10-27 02:30:50,567 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:30:50,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:30:50,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:30:50,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:30:50,569 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:30:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:30:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:30:51,448 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:30:51,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-27 02:30:51,449 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:30:51,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 02:30:51,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 02:30:51,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 02:30:51,453 INFO L87 Difference]: Start difference. First operand 482 states and 843 transitions. Second operand 7 states. [2018-10-27 02:30:59,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:30:59,056 INFO L93 Difference]: Finished difference Result 1760 states and 3239 transitions. [2018-10-27 02:30:59,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 02:30:59,066 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2018-10-27 02:30:59,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:30:59,084 INFO L225 Difference]: With dead ends: 1760 [2018-10-27 02:30:59,085 INFO L226 Difference]: Without dead ends: 1284 [2018-10-27 02:30:59,096 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-27 02:30:59,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2018-10-27 02:30:59,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1037. [2018-10-27 02:30:59,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-10-27 02:30:59,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1685 transitions. [2018-10-27 02:30:59,206 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1685 transitions. Word has length 143 [2018-10-27 02:30:59,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:30:59,207 INFO L481 AbstractCegarLoop]: Abstraction has 1037 states and 1685 transitions. [2018-10-27 02:30:59,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 02:30:59,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1685 transitions. [2018-10-27 02:30:59,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-27 02:30:59,219 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:30:59,219 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:30:59,220 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:30:59,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:30:59,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1636025592, now seen corresponding path program 1 times [2018-10-27 02:30:59,220 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:30:59,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:30:59,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:30:59,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:30:59,222 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:30:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:30:59,600 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 02:30:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 122 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 02:30:59,775 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:30:59,775 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:30:59,777 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 217 with the following transitions: [2018-10-27 02:30:59,779 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [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], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 02:30:59,851 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:30:59,851 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:31:01,769 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 02:31:02,048 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 02:31:02,049 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-27 02:31:02,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:31:02,063 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 02:31:04,557 INFO L227 lantSequenceWeakener]: Weakened 208 states. On average, predicates are now at 73.99% of their original sizes. [2018-10-27 02:31:04,557 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 02:31:05,066 INFO L415 sIntCurrentIteration]: We unified 215 AI predicates to 215 [2018-10-27 02:31:05,067 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 02:31:05,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 02:31:05,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 02:31:05,068 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:31:05,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 02:31:05,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 02:31:05,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 02:31:05,074 INFO L87 Difference]: Start difference. First operand 1037 states and 1685 transitions. Second operand 7 states. [2018-10-27 02:31:59,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:31:59,011 INFO L93 Difference]: Finished difference Result 2260 states and 3574 transitions. [2018-10-27 02:31:59,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:31:59,012 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2018-10-27 02:31:59,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:31:59,018 INFO L225 Difference]: With dead ends: 2260 [2018-10-27 02:31:59,019 INFO L226 Difference]: Without dead ends: 1229 [2018-10-27 02:31:59,022 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 216 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-27 02:31:59,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2018-10-27 02:31:59,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1227. [2018-10-27 02:31:59,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2018-10-27 02:31:59,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1883 transitions. [2018-10-27 02:31:59,059 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1883 transitions. Word has length 216 [2018-10-27 02:31:59,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:31:59,060 INFO L481 AbstractCegarLoop]: Abstraction has 1227 states and 1883 transitions. [2018-10-27 02:31:59,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 02:31:59,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1883 transitions. [2018-10-27 02:31:59,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-10-27 02:31:59,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:31:59,066 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:31:59,066 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:31:59,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:31:59,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1687745886, now seen corresponding path program 1 times [2018-10-27 02:31:59,067 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:31:59,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:31:59,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:31:59,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:31:59,068 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:31:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:32:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-27 02:32:00,008 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:32:00,008 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:32:00,009 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 261 with the following transitions: [2018-10-27 02:32:00,010 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [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], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 02:32:00,021 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:32:00,023 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:32:05,217 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 02:32:14,630 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 02:32:14,630 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-27 02:32:14,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:32:14,640 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 02:32:18,266 INFO L227 lantSequenceWeakener]: Weakened 258 states. On average, predicates are now at 73.86% of their original sizes. [2018-10-27 02:32:18,266 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 02:32:19,384 INFO L415 sIntCurrentIteration]: We unified 259 AI predicates to 259 [2018-10-27 02:32:19,384 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 02:32:19,384 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 02:32:19,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [7] total 17 [2018-10-27 02:32:19,385 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:32:19,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-27 02:32:19,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-27 02:32:19,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-10-27 02:32:19,386 INFO L87 Difference]: Start difference. First operand 1227 states and 1883 transitions. Second operand 12 states. [2018-10-27 02:33:34,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:33:34,361 INFO L93 Difference]: Finished difference Result 2455 states and 3933 transitions. [2018-10-27 02:33:34,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-27 02:33:34,361 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 260 [2018-10-27 02:33:34,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:33:34,373 INFO L225 Difference]: With dead ends: 2455 [2018-10-27 02:33:34,373 INFO L226 Difference]: Without dead ends: 1424 [2018-10-27 02:33:34,377 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 269 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2018-10-27 02:33:34,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2018-10-27 02:33:34,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1420. [2018-10-27 02:33:34,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1420 states. [2018-10-27 02:33:34,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 2098 transitions. [2018-10-27 02:33:34,425 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 2098 transitions. Word has length 260 [2018-10-27 02:33:34,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:33:34,426 INFO L481 AbstractCegarLoop]: Abstraction has 1420 states and 2098 transitions. [2018-10-27 02:33:34,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-27 02:33:34,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 2098 transitions. [2018-10-27 02:33:34,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-27 02:33:34,431 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:33:34,431 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:33:34,432 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:33:34,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:33:34,432 INFO L82 PathProgramCache]: Analyzing trace with hash 629945386, now seen corresponding path program 1 times [2018-10-27 02:33:34,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:33:34,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:33:34,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:33:34,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:33:34,434 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:33:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:33:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-27 02:33:34,805 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:33:34,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 02:33:34,805 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:33:34,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 02:33:34,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 02:33:34,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:33:34,807 INFO L87 Difference]: Start difference. First operand 1420 states and 2098 transitions. Second operand 4 states. [2018-10-27 02:33:36,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:33:36,640 INFO L93 Difference]: Finished difference Result 3924 states and 6517 transitions. [2018-10-27 02:33:36,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 02:33:36,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 270 [2018-10-27 02:33:36,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:33:36,660 INFO L225 Difference]: With dead ends: 3924 [2018-10-27 02:33:36,660 INFO L226 Difference]: Without dead ends: 2893 [2018-10-27 02:33:36,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:33:36,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2018-10-27 02:33:36,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2889. [2018-10-27 02:33:36,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2889 states. [2018-10-27 02:33:36,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2889 states to 2889 states and 4267 transitions. [2018-10-27 02:33:36,759 INFO L78 Accepts]: Start accepts. Automaton has 2889 states and 4267 transitions. Word has length 270 [2018-10-27 02:33:36,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:33:36,760 INFO L481 AbstractCegarLoop]: Abstraction has 2889 states and 4267 transitions. [2018-10-27 02:33:36,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 02:33:36,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2889 states and 4267 transitions. [2018-10-27 02:33:36,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-27 02:33:36,772 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:33:36,772 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:33:36,773 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:33:36,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:33:36,773 INFO L82 PathProgramCache]: Analyzing trace with hash -307629149, now seen corresponding path program 1 times [2018-10-27 02:33:36,773 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:33:36,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:33:36,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:33:36,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:33:36,775 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:33:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:33:37,023 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-27 02:33:37,024 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:33:37,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 02:33:37,024 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:33:37,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 02:33:37,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 02:33:37,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 02:33:37,026 INFO L87 Difference]: Start difference. First operand 2889 states and 4267 transitions. Second operand 3 states. [2018-10-27 02:33:38,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:33:38,799 INFO L93 Difference]: Finished difference Result 6152 states and 9541 transitions. [2018-10-27 02:33:38,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 02:33:38,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 286 [2018-10-27 02:33:38,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:33:38,820 INFO L225 Difference]: With dead ends: 6152 [2018-10-27 02:33:38,820 INFO L226 Difference]: Without dead ends: 3652 [2018-10-27 02:33:38,840 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 02:33:38,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3652 states. [2018-10-27 02:33:38,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3652 to 3652. [2018-10-27 02:33:38,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3652 states. [2018-10-27 02:33:38,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 5306 transitions. [2018-10-27 02:33:38,948 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 5306 transitions. Word has length 286 [2018-10-27 02:33:38,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:33:38,949 INFO L481 AbstractCegarLoop]: Abstraction has 3652 states and 5306 transitions. [2018-10-27 02:33:38,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 02:33:38,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 5306 transitions. [2018-10-27 02:33:38,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-10-27 02:33:38,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:33:38,962 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, 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] [2018-10-27 02:33:38,962 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:33:38,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:33:38,963 INFO L82 PathProgramCache]: Analyzing trace with hash 748491532, now seen corresponding path program 1 times [2018-10-27 02:33:38,963 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:33:38,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:33:38,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:33:38,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:33:38,964 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:33:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:33:39,258 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-10-27 02:33:39,258 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:33:39,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 02:33:39,260 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:33:39,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 02:33:39,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 02:33:39,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 02:33:39,262 INFO L87 Difference]: Start difference. First operand 3652 states and 5306 transitions. Second operand 3 states. [2018-10-27 02:33:41,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:33:41,989 INFO L93 Difference]: Finished difference Result 9909 states and 15038 transitions. [2018-10-27 02:33:41,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 02:33:41,994 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 291 [2018-10-27 02:33:41,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:33:42,028 INFO L225 Difference]: With dead ends: 9909 [2018-10-27 02:33:42,028 INFO L226 Difference]: Without dead ends: 6646 [2018-10-27 02:33:42,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 02:33:42,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6646 states. [2018-10-27 02:33:42,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6646 to 6646. [2018-10-27 02:33:42,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6646 states. [2018-10-27 02:33:42,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6646 states to 6646 states and 9564 transitions. [2018-10-27 02:33:42,243 INFO L78 Accepts]: Start accepts. Automaton has 6646 states and 9564 transitions. Word has length 291 [2018-10-27 02:33:42,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:33:42,244 INFO L481 AbstractCegarLoop]: Abstraction has 6646 states and 9564 transitions. [2018-10-27 02:33:42,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 02:33:42,244 INFO L276 IsEmpty]: Start isEmpty. Operand 6646 states and 9564 transitions. [2018-10-27 02:33:42,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-10-27 02:33:42,267 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:33:42,268 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 02:33:42,268 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:33:42,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:33:42,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1761643877, now seen corresponding path program 1 times [2018-10-27 02:33:42,269 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:33:42,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:33:42,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:33:42,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:33:42,270 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:33:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:33:42,792 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-10-27 02:33:42,793 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:33:42,793 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:33:42,793 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 308 with the following transitions: [2018-10-27 02:33:42,794 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [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], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [649], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 02:33:42,799 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:33:42,799 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:33:48,480 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 02:34:02,559 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 02:34:02,559 INFO L272 AbstractInterpreter]: Visited 140 different actions 407 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-27 02:34:02,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:34:02,573 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 02:34:05,567 INFO L227 lantSequenceWeakener]: Weakened 15 states. On average, predicates are now at 77.18% of their original sizes. [2018-10-27 02:34:05,567 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-27 02:34:35,682 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 02:34:35,687 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 02:34:35,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:34:35 BoogieIcfgContainer [2018-10-27 02:34:35,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 02:34:35,689 INFO L168 Benchmark]: Toolchain (without parser) took 234062.95 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. [2018-10-27 02:34:35,690 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 02:34:35,691 INFO L168 Benchmark]: CACSL2BoogieTranslator took 981.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-27 02:34:35,691 INFO L168 Benchmark]: Boogie Procedure Inliner took 283.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 765.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -859.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2018-10-27 02:34:35,692 INFO L168 Benchmark]: Boogie Preprocessor took 148.58 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 02:34:35,693 INFO L168 Benchmark]: RCFGBuilder took 4349.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 172.4 MB). Peak memory consumption was 172.4 MB. Max. memory is 7.1 GB. [2018-10-27 02:34:35,694 INFO L168 Benchmark]: TraceAbstraction took 228292.20 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -841.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-27 02:34:35,699 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 981.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 283.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 765.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -859.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 148.58 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4349.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 172.4 MB). Peak memory consumption was 172.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228292.20 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -841.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 189]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 189). Cancelled while BasicCegarLoop was analyzing trace of length 308 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 9 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 228.1s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 145.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1747 SDtfs, 3943 SDslu, 1372 SDs, 0 SdLazy, 7812 SolverSat, 1616 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 96.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 517 GetRequests, 474 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6646occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 36.6s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9959825668158997 AbsIntWeakeningRatio, 0.10897435897435898 AbsIntAvgWeakeningVarsNumRemoved, 775.5230769230769 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 262 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1534 NumberOfCodeBlocks, 1534 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1527 ConstructedInterpolants, 0 QuantifiedInterpolants, 999322 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 888/1081 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown