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-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label55_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:52:15,806 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:52:15,811 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:52:15,824 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:52:15,824 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:52:15,825 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:52:15,827 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:52:15,828 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:52:15,830 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:52:15,831 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:52:15,832 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:52:15,832 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:52:15,833 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:52:15,834 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:52:15,835 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:52:15,836 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:52:15,837 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:52:15,839 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:52:15,841 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:52:15,843 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:52:15,844 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:52:15,845 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:52:15,847 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:52:15,848 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:52:15,848 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:52:15,849 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:52:15,850 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:52:15,851 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:52:15,852 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:52:15,853 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:52:15,853 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:52:15,854 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:52:15,854 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:52:15,854 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:52:15,855 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:52:15,856 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:52:15,856 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 16:52:15,880 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:52:15,880 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:52:15,882 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:52:15,882 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:52:15,882 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:52:15,882 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:52:15,882 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:52:15,886 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:52:15,886 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:52:15,886 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:52:15,886 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:52:15,887 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:52:15,887 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:52:15,888 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:52:15,888 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:52:15,888 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:52:15,888 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:52:15,888 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:52:15,890 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:52:15,891 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:52:15,891 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:52:15,891 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:52:15,891 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:52:15,892 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:52:15,892 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:52:15,892 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:52:15,892 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:52:15,893 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:52:15,893 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:52:15,893 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:52:15,893 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:52:15,893 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:52:15,894 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:52:15,894 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:52:15,894 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:52:15,939 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:52:15,957 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:52:15,962 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:52:15,964 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:52:15,965 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:52:15,965 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label55_false-unreach-call.c [2018-11-12 16:52:16,040 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c920bfd1b/50afa62290d34ac4b40ac291131203c4/FLAGe7633380a [2018-11-12 16:52:16,772 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:52:16,773 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label55_false-unreach-call.c [2018-11-12 16:52:16,799 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c920bfd1b/50afa62290d34ac4b40ac291131203c4/FLAGe7633380a [2018-11-12 16:52:16,816 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c920bfd1b/50afa62290d34ac4b40ac291131203c4 [2018-11-12 16:52:16,830 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:52:16,831 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:52:16,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:52:16,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:52:16,838 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:52:16,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:52:16" (1/1) ... [2018-11-12 16:52:16,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58a05363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:52:16, skipping insertion in model container [2018-11-12 16:52:16,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:52:16" (1/1) ... [2018-11-12 16:52:16,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:52:16,992 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:52:18,010 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:52:18,015 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:52:18,473 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:52:18,497 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:52:18,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:52:18 WrapperNode [2018-11-12 16:52:18,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:52:18,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:52:18,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:52:18,500 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:52:18,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:52:18" (1/1) ... [2018-11-12 16:52:18,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:52:18" (1/1) ... [2018-11-12 16:52:18,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:52:18,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:52:18,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:52:18,777 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:52:18,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:52:18" (1/1) ... [2018-11-12 16:52:18,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:52:18" (1/1) ... [2018-11-12 16:52:18,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:52:18" (1/1) ... [2018-11-12 16:52:18,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:52:18" (1/1) ... [2018-11-12 16:52:18,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:52:18" (1/1) ... [2018-11-12 16:52:18,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:52:18" (1/1) ... [2018-11-12 16:52:18,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:52:18" (1/1) ... [2018-11-12 16:52:18,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:52:18,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:52:18,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:52:18,999 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:52:19,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:52:18" (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 [2018-11-12 16:52:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:52:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:52:19,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:52:19,069 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:52:19,069 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:52:19,069 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:52:19,069 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:52:19,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:52:19,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:52:19,070 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:52:19,070 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:52:29,116 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:52:29,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:52:29 BoogieIcfgContainer [2018-11-12 16:52:29,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:52:29,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:52:29,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:52:29,123 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:52:29,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:52:16" (1/3) ... [2018-11-12 16:52:29,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789fda72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:52:29, skipping insertion in model container [2018-11-12 16:52:29,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:52:18" (2/3) ... [2018-11-12 16:52:29,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789fda72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:52:29, skipping insertion in model container [2018-11-12 16:52:29,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:52:29" (3/3) ... [2018-11-12 16:52:29,127 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label55_false-unreach-call.c [2018-11-12 16:52:29,137 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:52:29,145 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:52:29,164 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:52:29,207 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:52:29,207 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:52:29,208 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:52:29,208 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:52:29,208 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:52:29,208 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:52:29,208 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:52:29,209 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:52:29,243 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-12 16:52:29,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-12 16:52:29,250 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:52:29,251 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:52:29,254 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:52:29,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:52:29,260 INFO L82 PathProgramCache]: Analyzing trace with hash -2057459564, now seen corresponding path program 1 times [2018-11-12 16:52:29,263 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:52:29,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:52:29,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:52:29,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:52:29,312 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:52:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:52:29,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:52:29,715 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:52:29,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:52:29,715 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:52:29,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:52:29,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:52:29,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:52:29,740 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-12 16:52:39,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:52:39,487 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-11-12 16:52:39,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:52:39,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-11-12 16:52:39,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:52:39,536 INFO L225 Difference]: With dead ends: 2164 [2018-11-12 16:52:39,536 INFO L226 Difference]: Without dead ends: 1554 [2018-11-12 16:52:39,546 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:52:39,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-11-12 16:52:39,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-11-12 16:52:39,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-11-12 16:52:39,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-11-12 16:52:39,675 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 18 [2018-11-12 16:52:39,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:52:39,676 INFO L480 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-11-12 16:52:39,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:52:39,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-11-12 16:52:39,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-11-12 16:52:39,682 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:52:39,682 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:52:39,682 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:52:39,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:52:39,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1959202398, now seen corresponding path program 1 times [2018-11-12 16:52:39,683 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:52:39,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:52:39,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:52:39,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:52:39,685 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:52:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:52:39,984 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:52:39,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:52:39,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:52:39,985 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:52:39,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:52:39,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:52:39,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:52:39,990 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-11-12 16:52:47,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:52:47,523 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-11-12 16:52:47,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:52:47,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2018-11-12 16:52:47,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:52:47,541 INFO L225 Difference]: With dead ends: 3031 [2018-11-12 16:52:47,542 INFO L226 Difference]: Without dead ends: 1985 [2018-11-12 16:52:47,547 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:52:47,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-11-12 16:52:47,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-11-12 16:52:47,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-11-12 16:52:47,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-11-12 16:52:47,643 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 90 [2018-11-12 16:52:47,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:52:47,647 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-11-12 16:52:47,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:52:47,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-11-12 16:52:47,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-12 16:52:47,652 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:52:47,653 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:52:47,653 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:52:47,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:52:47,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1042899370, now seen corresponding path program 1 times [2018-11-12 16:52:47,653 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:52:47,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:52:47,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:52:47,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:52:47,659 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:52:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:52:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:52:47,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:52:47,926 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:52:47,927 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 94 with the following transitions: [2018-11-12 16:52:47,929 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [754], [756], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 16:52:47,980 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:52:47,980 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:52:48,483 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:52:49,184 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:52:49,186 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Performed 3908 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3908 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 16:52:49,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:52:49,233 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:52:49,233 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:52:49,233 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:52:49,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:52:49,256 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:52:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:52:49,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:52:52,245 WARN L179 SmtUtils]: Spent 2.38 s on a formula simplification that was a NOOP. DAG size: 42 [2018-11-12 16:52:53,154 WARN L179 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 21 [2018-11-12 16:52:53,208 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:52:53,209 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:52:53,947 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-11-12 16:52:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:52:54,245 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 16:52:54,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-11-12 16:52:54,246 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:52:54,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:52:54,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:52:54,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-11-12 16:52:54,247 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 6 states. [2018-11-12 16:53:06,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:53:06,769 INFO L93 Difference]: Finished difference Result 7518 states and 12893 transitions. [2018-11-12 16:53:06,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-12 16:53:06,769 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-11-12 16:53:06,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:53:06,818 INFO L225 Difference]: With dead ends: 7518 [2018-11-12 16:53:06,818 INFO L226 Difference]: Without dead ends: 5565 [2018-11-12 16:53:06,835 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-11-12 16:53:06,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5565 states. [2018-11-12 16:53:07,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5565 to 5555. [2018-11-12 16:53:07,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5555 states. [2018-11-12 16:53:07,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5555 states to 5555 states and 9340 transitions. [2018-11-12 16:53:07,031 INFO L78 Accepts]: Start accepts. Automaton has 5555 states and 9340 transitions. Word has length 93 [2018-11-12 16:53:07,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:53:07,032 INFO L480 AbstractCegarLoop]: Abstraction has 5555 states and 9340 transitions. [2018-11-12 16:53:07,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:53:07,032 INFO L276 IsEmpty]: Start isEmpty. Operand 5555 states and 9340 transitions. [2018-11-12 16:53:07,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-11-12 16:53:07,036 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:53:07,037 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:53:07,037 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:53:07,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:53:07,037 INFO L82 PathProgramCache]: Analyzing trace with hash -514206206, now seen corresponding path program 1 times [2018-11-12 16:53:07,038 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:53:07,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:53:07,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:53:07,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:53:07,039 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:53:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:53:07,374 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:53:07,796 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:53:07,797 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:53:07,797 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:53:07,797 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 107 with the following transitions: [2018-11-12 16:53:07,798 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [754], [756], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 16:53:07,803 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:53:07,803 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:53:07,919 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:53:08,518 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:53:08,518 INFO L272 AbstractInterpreter]: Visited 96 different actions 274 times. Merged at 5 different actions 9 times. Never widened. Performed 4197 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4197 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 16:53:08,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:53:08,556 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:53:08,556 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:53:08,556 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:53:08,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:53:08,574 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:53:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:53:08,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:53:08,786 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:53:08,787 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:53:09,247 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:53:09,281 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:53:09,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-11-12 16:53:09,281 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:53:09,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:53:09,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:53:09,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:53:09,283 INFO L87 Difference]: Start difference. First operand 5555 states and 9340 transitions. Second operand 3 states. [2018-11-12 16:53:13,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:53:13,191 INFO L93 Difference]: Finished difference Result 13726 states and 22953 transitions. [2018-11-12 16:53:13,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:53:13,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2018-11-12 16:53:13,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:53:13,246 INFO L225 Difference]: With dead ends: 13726 [2018-11-12 16:53:13,246 INFO L226 Difference]: Without dead ends: 8177 [2018-11-12 16:53:13,283 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 211 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:53:13,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8177 states. [2018-11-12 16:53:13,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8177 to 8176. [2018-11-12 16:53:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8176 states. [2018-11-12 16:53:13,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8176 states to 8176 states and 12764 transitions. [2018-11-12 16:53:13,515 INFO L78 Accepts]: Start accepts. Automaton has 8176 states and 12764 transitions. Word has length 106 [2018-11-12 16:53:13,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:53:13,515 INFO L480 AbstractCegarLoop]: Abstraction has 8176 states and 12764 transitions. [2018-11-12 16:53:13,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:53:13,517 INFO L276 IsEmpty]: Start isEmpty. Operand 8176 states and 12764 transitions. [2018-11-12 16:53:13,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-11-12 16:53:13,523 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:53:13,523 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-12 16:53:13,526 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:53:13,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:53:13,527 INFO L82 PathProgramCache]: Analyzing trace with hash -477862812, now seen corresponding path program 1 times [2018-11-12 16:53:13,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:53:13,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:53:13,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:53:13,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:53:13,528 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:53:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:53:13,866 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 16:53:13,867 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:53:13,867 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:53:13,867 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 192 with the following transitions: [2018-11-12 16:53:13,867 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [754], [756], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1329], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 16:53:13,874 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:53:13,874 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:53:13,967 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:53:14,545 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:53:14,545 INFO L272 AbstractInterpreter]: Visited 107 different actions 307 times. Merged at 5 different actions 9 times. Never widened. Performed 5333 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5333 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 16:53:14,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:53:14,582 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:53:14,582 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:53:14,582 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:53:14,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:53:14,598 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:53:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:53:14,686 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:53:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:53:15,063 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:53:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:53:15,632 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:53:15,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-12 16:53:15,635 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:53:15,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 16:53:15,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 16:53:15,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:53:15,636 INFO L87 Difference]: Start difference. First operand 8176 states and 12764 transitions. Second operand 9 states. [2018-11-12 16:53:22,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:53:22,559 INFO L93 Difference]: Finished difference Result 16005 states and 25151 transitions. [2018-11-12 16:53:22,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-12 16:53:22,559 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 191 [2018-11-12 16:53:22,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:53:22,603 INFO L225 Difference]: With dead ends: 16005 [2018-11-12 16:53:22,603 INFO L226 Difference]: Without dead ends: 6865 [2018-11-12 16:53:22,640 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 380 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-11-12 16:53:22,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6865 states. [2018-11-12 16:53:22,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6865 to 6832. [2018-11-12 16:53:22,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6832 states. [2018-11-12 16:53:22,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 8194 transitions. [2018-11-12 16:53:22,808 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 8194 transitions. Word has length 191 [2018-11-12 16:53:22,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:53:22,809 INFO L480 AbstractCegarLoop]: Abstraction has 6832 states and 8194 transitions. [2018-11-12 16:53:22,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 16:53:22,809 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 8194 transitions. [2018-11-12 16:53:22,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-11-12 16:53:22,814 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:53:22,814 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:53:22,814 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:53:22,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:53:22,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1709165469, now seen corresponding path program 1 times [2018-11-12 16:53:22,817 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:53:22,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:53:22,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:53:22,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:53:22,819 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:53:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:53:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-12 16:53:23,222 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:53:23,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:53:23,223 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:53:23,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:53:23,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:53:23,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:53:23,224 INFO L87 Difference]: Start difference. First operand 6832 states and 8194 transitions. Second operand 4 states. [2018-11-12 16:53:27,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:53:27,928 INFO L93 Difference]: Finished difference Result 24688 states and 30252 transitions. [2018-11-12 16:53:27,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:53:27,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 272 [2018-11-12 16:53:27,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:53:27,973 INFO L225 Difference]: With dead ends: 24688 [2018-11-12 16:53:27,973 INFO L226 Difference]: Without dead ends: 14315 [2018-11-12 16:53:27,999 INFO L604 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 [2018-11-12 16:53:28,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14315 states. [2018-11-12 16:53:28,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14315 to 14310. [2018-11-12 16:53:28,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14310 states. [2018-11-12 16:53:28,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14310 states to 14310 states and 16679 transitions. [2018-11-12 16:53:28,507 INFO L78 Accepts]: Start accepts. Automaton has 14310 states and 16679 transitions. Word has length 272 [2018-11-12 16:53:28,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:53:28,508 INFO L480 AbstractCegarLoop]: Abstraction has 14310 states and 16679 transitions. [2018-11-12 16:53:28,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:53:28,509 INFO L276 IsEmpty]: Start isEmpty. Operand 14310 states and 16679 transitions. [2018-11-12 16:53:28,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-11-12 16:53:28,520 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:53:28,521 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:53:28,521 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:53:28,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:53:28,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1227854719, now seen corresponding path program 1 times [2018-11-12 16:53:28,522 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:53:28,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:53:28,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:53:28,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:53:28,523 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:53:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:53:29,482 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:53:29,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:53:29,483 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:53:29,483 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 367 with the following transitions: [2018-11-12 16:53:29,487 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [273], [710], [711], [718], [726], [734], [742], [750], [754], [756], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-12 16:53:29,517 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:53:29,517 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:53:33,770 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:53:33,770 INFO L272 AbstractInterpreter]: Visited 356 different actions 2105 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Performed 40532 root evaluator evaluations with a maximum evaluation depth of 6. Performed 40532 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 16:53:33,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:53:33,809 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:53:33,809 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:53:33,809 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:53:33,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:53:33,825 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:53:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:53:33,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:53:34,194 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:53:34,195 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:53:34,487 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-12 16:53:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:53:35,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 16:53:35,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-11-12 16:53:35,015 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:53:35,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:53:35,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:53:35,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:53:35,017 INFO L87 Difference]: Start difference. First operand 14310 states and 16679 transitions. Second operand 6 states. [2018-11-12 16:53:39,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:53:39,976 INFO L93 Difference]: Finished difference Result 30378 states and 35433 transitions. [2018-11-12 16:53:39,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-12 16:53:39,976 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 366 [2018-11-12 16:53:39,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:53:40,022 INFO L225 Difference]: With dead ends: 30378 [2018-11-12 16:53:40,022 INFO L226 Difference]: Without dead ends: 15635 [2018-11-12 16:53:40,042 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 731 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:53:40,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15635 states. [2018-11-12 16:53:40,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15635 to 15193. [2018-11-12 16:53:40,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15193 states. [2018-11-12 16:53:40,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15193 states to 15193 states and 17728 transitions. [2018-11-12 16:53:40,331 INFO L78 Accepts]: Start accepts. Automaton has 15193 states and 17728 transitions. Word has length 366 [2018-11-12 16:53:40,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:53:40,332 INFO L480 AbstractCegarLoop]: Abstraction has 15193 states and 17728 transitions. [2018-11-12 16:53:40,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:53:40,332 INFO L276 IsEmpty]: Start isEmpty. Operand 15193 states and 17728 transitions. [2018-11-12 16:53:40,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-11-12 16:53:40,354 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:53:40,355 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:53:40,355 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:53:40,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:53:40,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1648283374, now seen corresponding path program 1 times [2018-11-12 16:53:40,356 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:53:40,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:53:40,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:53:40,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:53:40,357 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:53:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:53:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 43 proven. 159 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-11-12 16:53:41,226 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:53:41,227 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:53:41,227 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 475 with the following transitions: [2018-11-12 16:53:41,228 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [754], [756], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2275], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 16:53:41,234 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:53:41,234 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:53:41,298 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:53:44,309 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:53:44,309 INFO L272 AbstractInterpreter]: Visited 299 different actions 1496 times. Merged at 8 different actions 46 times. Widened at 1 different actions 1 times. Performed 30227 root evaluator evaluations with a maximum evaluation depth of 6. Performed 30227 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 9 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-12 16:53:44,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:53:44,317 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:53:44,317 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:53:44,317 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:53:44,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:53:44,335 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:53:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:53:44,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:53:44,888 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-12 16:53:44,888 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:53:46,271 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 43 proven. 231 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:53:46,292 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:53:46,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 14 [2018-11-12 16:53:46,292 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:53:46,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 16:53:46,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 16:53:46,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-11-12 16:53:46,294 INFO L87 Difference]: Start difference. First operand 15193 states and 17728 transitions. Second operand 9 states. [2018-11-12 16:53:57,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:53:57,637 INFO L93 Difference]: Finished difference Result 42382 states and 50438 transitions. [2018-11-12 16:53:57,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 16:53:57,638 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 474 [2018-11-12 16:53:57,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:53:57,723 INFO L225 Difference]: With dead ends: 42382 [2018-11-12 16:53:57,723 INFO L226 Difference]: Without dead ends: 27195 [2018-11-12 16:53:57,750 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 977 GetRequests, 952 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=182, Invalid=418, Unknown=0, NotChecked=0, Total=600 [2018-11-12 16:53:57,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27195 states. [2018-11-12 16:53:58,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27195 to 23262. [2018-11-12 16:53:58,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23262 states. [2018-11-12 16:53:58,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23262 states to 23262 states and 27287 transitions. [2018-11-12 16:53:58,173 INFO L78 Accepts]: Start accepts. Automaton has 23262 states and 27287 transitions. Word has length 474 [2018-11-12 16:53:58,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:53:58,173 INFO L480 AbstractCegarLoop]: Abstraction has 23262 states and 27287 transitions. [2018-11-12 16:53:58,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 16:53:58,174 INFO L276 IsEmpty]: Start isEmpty. Operand 23262 states and 27287 transitions. [2018-11-12 16:53:58,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2018-11-12 16:53:58,216 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:53:58,216 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:53:58,217 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:53:58,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:53:58,217 INFO L82 PathProgramCache]: Analyzing trace with hash -595798553, now seen corresponding path program 1 times [2018-11-12 16:53:58,217 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:53:58,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:53:58,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:53:58,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:53:58,218 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:53:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:53:58,884 WARN L179 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-11-12 16:53:59,250 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-12 16:53:59,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:53:59,250 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:53:59,251 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 586 with the following transitions: [2018-11-12 16:53:59,251 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [754], [756], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1356], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2275], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 16:53:59,257 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:53:59,258 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:53:59,362 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:54:02,247 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:54:02,247 INFO L272 AbstractInterpreter]: Visited 300 different actions 1509 times. Merged at 9 different actions 54 times. Widened at 1 different actions 1 times. Performed 32724 root evaluator evaluations with a maximum evaluation depth of 6. Performed 32724 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 12 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-12 16:54:02,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:54:02,257 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:54:02,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:54:02,257 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:54:02,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:54:02,266 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:54:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:54:02,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:54:14,849 WARN L179 SmtUtils]: Spent 12.28 s on a formula simplification. DAG size of input: 423 DAG size of output: 59 [2018-11-12 16:54:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-12 16:54:15,169 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:54:16,115 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-12 16:54:16,135 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:54:16,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2018-11-12 16:54:16,135 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:54:16,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:54:16,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:54:16,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:54:16,137 INFO L87 Difference]: Start difference. First operand 23262 states and 27287 transitions. Second operand 6 states. [2018-11-12 16:54:30,681 WARN L179 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 66 [2018-11-12 16:54:32,782 WARN L179 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 62 [2018-11-12 16:56:12,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:56:12,162 INFO L93 Difference]: Finished difference Result 60939 states and 75262 transitions. [2018-11-12 16:56:12,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 16:56:12,163 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 585 [2018-11-12 16:56:12,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:56:12,277 INFO L225 Difference]: With dead ends: 60939 [2018-11-12 16:56:12,278 INFO L226 Difference]: Without dead ends: 37683 [2018-11-12 16:56:12,320 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1183 GetRequests, 1170 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2018-11-12 16:56:12,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37683 states. [2018-11-12 16:56:13,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37683 to 34657. [2018-11-12 16:56:13,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34657 states. [2018-11-12 16:56:13,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34657 states to 34657 states and 40933 transitions. [2018-11-12 16:56:13,115 INFO L78 Accepts]: Start accepts. Automaton has 34657 states and 40933 transitions. Word has length 585 [2018-11-12 16:56:13,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:56:13,116 INFO L480 AbstractCegarLoop]: Abstraction has 34657 states and 40933 transitions. [2018-11-12 16:56:13,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:56:13,116 INFO L276 IsEmpty]: Start isEmpty. Operand 34657 states and 40933 transitions. [2018-11-12 16:56:13,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2018-11-12 16:56:13,166 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:56:13,166 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:56:13,167 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:56:13,167 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:56:13,167 INFO L82 PathProgramCache]: Analyzing trace with hash -257296657, now seen corresponding path program 1 times [2018-11-12 16:56:13,167 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:56:13,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:13,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:56:13,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:13,170 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:56:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:56:14,437 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-12 16:56:15,127 WARN L179 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 Received shutdown request... [2018-11-12 16:56:15,652 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 61 proven. 427 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-11-12 16:56:15,652 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:56:15,652 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:56:15,652 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 590 with the following transitions: [2018-11-12 16:56:15,653 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [754], [756], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1266], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2275], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 16:56:15,658 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:56:15,659 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:56:15,659 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-12 16:56:15,660 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-12 16:56:15,660 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 16:56:15,660 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:56:15,660 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:56:15,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:56:15,899 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:56:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:56:16,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:56:16,071 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-12 16:56:16,272 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:56:16,273 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:56:16,278 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:56:16,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:56:16 BoogieIcfgContainer [2018-11-12 16:56:16,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:56:16,280 INFO L168 Benchmark]: Toolchain (without parser) took 239449.37 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 357.7 MB. Max. memory is 7.1 GB. [2018-11-12 16:56:16,281 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-11-12 16:56:16,281 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1666.04 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-12 16:56:16,282 INFO L168 Benchmark]: Boogie Procedure Inliner took 277.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -955.5 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-12 16:56:16,283 INFO L168 Benchmark]: Boogie Preprocessor took 220.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-11-12 16:56:16,283 INFO L168 Benchmark]: RCFGBuilder took 10119.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 480.8 MB). Peak memory consumption was 480.8 MB. Max. memory is 7.1 GB. [2018-11-12 16:56:16,284 INFO L168 Benchmark]: TraceAbstraction took 227160.11 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 3.5 GB in the end (delta: -1.8 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:56:16,289 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1666.04 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 277.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -955.5 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 220.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10119.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 480.8 MB). Peak memory consumption was 480.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227160.11 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 3.5 GB in the end (delta: -1.8 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 41). Cancelled while BasicCegarLoop was analyzing trace of length 590 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 227.0s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 178.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2797 SDtfs, 16582 SDslu, 2065 SDs, 0 SdLazy, 30769 SolverSat, 6539 SolverUnsat, 48 SolverUnknown, 0 SolverNotchecked, 162.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3736 GetRequests, 3633 SyntacticMatches, 15 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 26.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34657occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.2s AbstIntTime, 7 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 7978 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 27.1s InterpolantComputationTime, 4010 NumberOfCodeBlocks, 4010 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 5804 ConstructedInterpolants, 192 QuantifiedInterpolants, 9820869 SizeOfPredicates, 12 NumberOfNonLiveVariables, 2987 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 21 InterpolantComputations, 7 PerfectInterpolantSequences, 2653/3100 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown