java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label18_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:39:39,782 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:39:39,784 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:39:39,801 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:39:39,802 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:39:39,803 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:39:39,804 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:39:39,807 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:39:39,810 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:39:39,810 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:39:39,819 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:39:39,819 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:39:39,821 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:39:39,823 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:39:39,824 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:39:39,827 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:39:39,829 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:39:39,832 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:39:39,838 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:39:39,840 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:39:39,841 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:39:39,842 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:39:39,845 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 23:39:39,845 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 23:39:39,846 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 23:39:39,846 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 23:39:39,848 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 23:39:39,848 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 23:39:39,849 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 23:39:39,851 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 23:39:39,851 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 23:39:39,852 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 23:39:39,852 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 23:39:39,852 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 23:39:39,854 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 23:39:39,855 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 23:39:39,855 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-24 23:39:39,883 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:39:39,883 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:39:39,884 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:39:39,884 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:39:39,885 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:39:39,885 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:39:39,885 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:39:39,885 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:39:39,886 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:39:39,886 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:39:39,886 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:39:39,886 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:39:39,886 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:39:39,887 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:39:39,887 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:39:39,888 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:39:39,889 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:39:39,889 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:39:39,889 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:39:39,889 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:39:39,890 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:39:39,890 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:39:39,890 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:39:39,890 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:39:39,890 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:39:39,891 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:39:39,891 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:39:39,891 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:39:39,891 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:39:39,891 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:39:39,892 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:39:39,892 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:39:39,892 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:39:39,892 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:39:39,892 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:39:39,893 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:39:39,952 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:39:39,965 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:39:39,970 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:39:39,972 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:39:39,973 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:39:39,973 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label18_false-unreach-call_false-termination.c [2018-10-24 23:39:40,054 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/810e12579/f57cd0522a1849aab6e4463b98ca18f6/FLAGfa38c0209 [2018-10-24 23:39:40,735 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:39:40,736 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label18_false-unreach-call_false-termination.c [2018-10-24 23:39:40,757 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/810e12579/f57cd0522a1849aab6e4463b98ca18f6/FLAGfa38c0209 [2018-10-24 23:39:40,777 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/810e12579/f57cd0522a1849aab6e4463b98ca18f6 [2018-10-24 23:39:40,788 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:39:40,790 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:39:40,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:39:40,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:39:40,796 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:39:40,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:39:40" (1/1) ... [2018-10-24 23:39:40,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@400d873a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:40, skipping insertion in model container [2018-10-24 23:39:40,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:39:40" (1/1) ... [2018-10-24 23:39:40,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:39:40,929 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:39:41,801 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:39:41,808 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:39:42,107 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:39:42,132 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:39:42,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:42 WrapperNode [2018-10-24 23:39:42,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:39:42,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:39:42,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:39:42,134 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:39:42,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:42" (1/1) ... [2018-10-24 23:39:42,196 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:42" (1/1) ... [2018-10-24 23:39:42,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:39:42,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:39:42,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:39:42,557 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:39:42,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:42" (1/1) ... [2018-10-24 23:39:42,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:42" (1/1) ... [2018-10-24 23:39:42,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:42" (1/1) ... [2018-10-24 23:39:42,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:42" (1/1) ... [2018-10-24 23:39:42,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:42" (1/1) ... [2018-10-24 23:39:42,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:42" (1/1) ... [2018-10-24 23:39:42,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:42" (1/1) ... [2018-10-24 23:39:42,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:39:42,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:39:42,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:39:42,783 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:39:42,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:39:42,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:39:42,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:39:42,860 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 23:39:42,860 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 23:39:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:39:42,861 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:39:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:39:42,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:39:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:39:42,861 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:39:51,412 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:39:51,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:39:51 BoogieIcfgContainer [2018-10-24 23:39:51,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:39:51,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:39:51,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:39:51,418 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:39:51,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:39:40" (1/3) ... [2018-10-24 23:39:51,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb7530b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:39:51, skipping insertion in model container [2018-10-24 23:39:51,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:42" (2/3) ... [2018-10-24 23:39:51,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb7530b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:39:51, skipping insertion in model container [2018-10-24 23:39:51,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:39:51" (3/3) ... [2018-10-24 23:39:51,422 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label18_false-unreach-call_false-termination.c [2018-10-24 23:39:51,432 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:39:51,441 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:39:51,459 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:39:51,501 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:39:51,501 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:39:51,501 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:39:51,501 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:39:51,502 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:39:51,502 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:39:51,502 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:39:51,502 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:39:51,535 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 23:39:51,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-24 23:39:51,545 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:39:51,546 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:39:51,550 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:39:51,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:39:51,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1622466265, now seen corresponding path program 1 times [2018-10-24 23:39:51,557 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:39:51,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:39:51,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:39:51,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:39:51,617 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:39:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:39:51,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:39:51,990 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:39:51,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:39:51,991 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:39:51,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:39:52,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:39:52,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:39:52,017 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-24 23:40:01,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:40:01,354 INFO L93 Difference]: Finished difference Result 1514 states and 2777 transitions. [2018-10-24 23:40:01,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:40:01,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-10-24 23:40:01,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:40:01,393 INFO L225 Difference]: With dead ends: 1514 [2018-10-24 23:40:01,394 INFO L226 Difference]: Without dead ends: 1070 [2018-10-24 23:40:01,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:40:01,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2018-10-24 23:40:01,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1068. [2018-10-24 23:40:01,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-10-24 23:40:01,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1675 transitions. [2018-10-24 23:40:01,532 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1675 transitions. Word has length 15 [2018-10-24 23:40:01,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:40:01,533 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1675 transitions. [2018-10-24 23:40:01,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:40:01,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1675 transitions. [2018-10-24 23:40:01,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-24 23:40:01,538 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:40:01,538 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:40:01,538 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:40:01,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:40:01,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1644253011, now seen corresponding path program 1 times [2018-10-24 23:40:01,539 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:40:01,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:40:01,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:40:01,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:40:01,541 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:40:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:40:01,789 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:40:01,789 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:40:01,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 23:40:01,789 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:40:01,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:40:01,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:40:01,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:40:01,792 INFO L87 Difference]: Start difference. First operand 1068 states and 1675 transitions. Second operand 3 states. [2018-10-24 23:40:07,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:40:07,855 INFO L93 Difference]: Finished difference Result 3059 states and 4890 transitions. [2018-10-24 23:40:07,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:40:07,857 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2018-10-24 23:40:07,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:40:07,879 INFO L225 Difference]: With dead ends: 3059 [2018-10-24 23:40:07,880 INFO L226 Difference]: Without dead ends: 1997 [2018-10-24 23:40:07,887 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:40:07,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2018-10-24 23:40:07,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1995. [2018-10-24 23:40:07,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2018-10-24 23:40:07,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2748 transitions. [2018-10-24 23:40:07,969 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2748 transitions. Word has length 85 [2018-10-24 23:40:07,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:40:07,970 INFO L481 AbstractCegarLoop]: Abstraction has 1995 states and 2748 transitions. [2018-10-24 23:40:07,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:40:07,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2748 transitions. [2018-10-24 23:40:07,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-24 23:40:07,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:40:07,982 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:40:07,982 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:40:07,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:40:07,982 INFO L82 PathProgramCache]: Analyzing trace with hash -76739898, now seen corresponding path program 1 times [2018-10-24 23:40:07,983 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:40:07,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:40:07,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:40:07,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:40:07,984 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:40:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:40:08,485 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 17 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 23:40:08,485 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:40:08,485 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:40:08,486 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 196 with the following transitions: [2018-10-24 23:40:08,488 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [93], [95], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 23:40:08,542 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:40:08,542 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:40:09,987 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 23:40:09,989 INFO L272 AbstractInterpreter]: Visited 104 different actions 299 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 23:40:10,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:40:10,037 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 23:40:10,892 INFO L232 lantSequenceWeakener]: Weakened 192 states. On average, predicates are now at 77.85% of their original sizes. [2018-10-24 23:40:10,892 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 23:40:11,279 INFO L413 sIntCurrentIteration]: We have 194 unified AI predicates [2018-10-24 23:40:11,279 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 23:40:11,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:40:11,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-10-24 23:40:11,280 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:40:11,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 23:40:11,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 23:40:11,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:40:11,282 INFO L87 Difference]: Start difference. First operand 1995 states and 2748 transitions. Second operand 9 states. [2018-10-24 23:41:06,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:41:06,775 INFO L93 Difference]: Finished difference Result 4926 states and 6576 transitions. [2018-10-24 23:41:06,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 23:41:06,775 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 195 [2018-10-24 23:41:06,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:41:06,793 INFO L225 Difference]: With dead ends: 4926 [2018-10-24 23:41:06,794 INFO L226 Difference]: Without dead ends: 2937 [2018-10-24 23:41:06,801 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 200 GetRequests, 184 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-10-24 23:41:06,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2018-10-24 23:41:06,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2934. [2018-10-24 23:41:06,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2934 states. [2018-10-24 23:41:06,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 3745 transitions. [2018-10-24 23:41:06,876 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 3745 transitions. Word has length 195 [2018-10-24 23:41:06,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:41:06,877 INFO L481 AbstractCegarLoop]: Abstraction has 2934 states and 3745 transitions. [2018-10-24 23:41:06,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 23:41:06,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 3745 transitions. [2018-10-24 23:41:06,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2018-10-24 23:41:06,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:41:06,888 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:41:06,889 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:41:06,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:41:06,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1749750815, now seen corresponding path program 1 times [2018-10-24 23:41:06,889 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:41:06,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:41:06,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:41:06,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:41:06,891 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:41:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:41:07,267 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-24 23:41:07,267 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:41:07,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 23:41:07,268 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:41:07,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:41:07,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:41:07,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:41:07,269 INFO L87 Difference]: Start difference. First operand 2934 states and 3745 transitions. Second operand 3 states. [2018-10-24 23:41:11,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:41:11,804 INFO L93 Difference]: Finished difference Result 5853 states and 8065 transitions. [2018-10-24 23:41:11,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:41:11,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 371 [2018-10-24 23:41:11,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:41:11,827 INFO L225 Difference]: With dead ends: 5853 [2018-10-24 23:41:11,827 INFO L226 Difference]: Without dead ends: 3864 [2018-10-24 23:41:11,840 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:41:11,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3864 states. [2018-10-24 23:41:11,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3864 to 3864. [2018-10-24 23:41:11,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3864 states. [2018-10-24 23:41:11,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3864 states to 3864 states and 4831 transitions. [2018-10-24 23:41:11,932 INFO L78 Accepts]: Start accepts. Automaton has 3864 states and 4831 transitions. Word has length 371 [2018-10-24 23:41:11,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:41:11,933 INFO L481 AbstractCegarLoop]: Abstraction has 3864 states and 4831 transitions. [2018-10-24 23:41:11,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:41:11,934 INFO L276 IsEmpty]: Start isEmpty. Operand 3864 states and 4831 transitions. [2018-10-24 23:41:11,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-10-24 23:41:11,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:41:11,943 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:41:11,943 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:41:11,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:41:11,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1636810859, now seen corresponding path program 1 times [2018-10-24 23:41:11,944 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:41:11,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:41:11,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:41:11,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:41:11,946 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:41:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:41:12,489 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:41:12,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:41:12,490 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:41:12,490 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 378 with the following transitions: [2018-10-24 23:41:12,491 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [93], [95], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 23:41:12,507 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:41:12,509 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:41:13,396 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:41:13,397 INFO L272 AbstractInterpreter]: Visited 286 different actions 1133 times. Merged at 7 different actions 26 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-24 23:41:13,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:41:13,436 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:41:13,436 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:41:13,436 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 23:41:13,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:41:13,451 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:41:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:41:13,643 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:41:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:41:14,071 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:41:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:41:14,784 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:41:14,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-24 23:41:14,785 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:41:14,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 23:41:14,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 23:41:14,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-24 23:41:14,788 INFO L87 Difference]: Start difference. First operand 3864 states and 4831 transitions. Second operand 9 states. [2018-10-24 23:41:26,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:41:26,548 INFO L93 Difference]: Finished difference Result 10357 states and 14853 transitions. [2018-10-24 23:41:26,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-24 23:41:26,551 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 377 [2018-10-24 23:41:26,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:41:26,603 INFO L225 Difference]: With dead ends: 10357 [2018-10-24 23:41:26,604 INFO L226 Difference]: Without dead ends: 7438 [2018-10-24 23:41:26,640 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 757 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2018-10-24 23:41:26,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7438 states. [2018-10-24 23:41:26,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7438 to 7426. [2018-10-24 23:41:26,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7426 states. [2018-10-24 23:41:26,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7426 states to 7426 states and 9649 transitions. [2018-10-24 23:41:26,869 INFO L78 Accepts]: Start accepts. Automaton has 7426 states and 9649 transitions. Word has length 377 [2018-10-24 23:41:26,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:41:26,870 INFO L481 AbstractCegarLoop]: Abstraction has 7426 states and 9649 transitions. [2018-10-24 23:41:26,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 23:41:26,870 INFO L276 IsEmpty]: Start isEmpty. Operand 7426 states and 9649 transitions. [2018-10-24 23:41:26,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-10-24 23:41:26,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:41:26,881 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 23:41:26,882 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:41:26,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:41:26,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1236413052, now seen corresponding path program 1 times [2018-10-24 23:41:26,883 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:41:26,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:41:26,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:41:26,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:41:26,884 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:41:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:41:27,645 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-24 23:41:27,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:41:27,646 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:41:27,646 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 396 with the following transitions: [2018-10-24 23:41:27,647 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [93], [95], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [625], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 23:41:27,656 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:41:27,657 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:41:29,195 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:41:29,195 INFO L272 AbstractInterpreter]: Visited 211 different actions 831 times. Merged at 7 different actions 23 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-24 23:41:29,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:41:29,221 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:41:29,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:41:29,222 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 23:41:29,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:41:29,236 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:41:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:41:29,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:41:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-24 23:41:29,935 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:41:30,179 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-24 23:41:30,700 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-24 23:41:30,722 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:41:30,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-24 23:41:30,722 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:41:30,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 23:41:30,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 23:41:30,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-24 23:41:30,725 INFO L87 Difference]: Start difference. First operand 7426 states and 9649 transitions. Second operand 9 states. [2018-10-24 23:41:55,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:41:55,514 INFO L93 Difference]: Finished difference Result 23662 states and 35801 transitions. [2018-10-24 23:41:55,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-24 23:41:55,514 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 395 [2018-10-24 23:41:55,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:41:55,656 INFO L225 Difference]: With dead ends: 23662 [2018-10-24 23:41:55,657 INFO L226 Difference]: Without dead ends: 16550 [2018-10-24 23:41:55,761 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 879 GetRequests, 825 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=557, Invalid=2305, Unknown=0, NotChecked=0, Total=2862 [2018-10-24 23:41:55,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16550 states. [2018-10-24 23:41:56,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16550 to 14304. [2018-10-24 23:41:56,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14304 states. [2018-10-24 23:41:56,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14304 states to 14304 states and 17921 transitions. [2018-10-24 23:41:56,336 INFO L78 Accepts]: Start accepts. Automaton has 14304 states and 17921 transitions. Word has length 395 [2018-10-24 23:41:56,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:41:56,338 INFO L481 AbstractCegarLoop]: Abstraction has 14304 states and 17921 transitions. [2018-10-24 23:41:56,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 23:41:56,338 INFO L276 IsEmpty]: Start isEmpty. Operand 14304 states and 17921 transitions. [2018-10-24 23:41:56,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2018-10-24 23:41:56,350 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:41:56,351 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 23:41:56,351 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:41:56,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:41:56,352 INFO L82 PathProgramCache]: Analyzing trace with hash 2013462730, now seen corresponding path program 1 times [2018-10-24 23:41:56,352 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:41:56,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:41:56,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:41:56,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:41:56,353 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:41:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:41:57,069 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-24 23:41:57,069 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:41:57,070 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:41:57,070 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 400 with the following transitions: [2018-10-24 23:41:57,070 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [93], [95], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 23:41:57,076 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:41:57,077 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:41:58,366 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:41:58,367 INFO L272 AbstractInterpreter]: Visited 213 different actions 1051 times. Merged at 8 different actions 39 times. Widened at 1 different actions 3 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-24 23:41:58,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:41:58,383 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:41:58,383 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:41:58,383 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 23:41:58,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:41:58,393 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:41:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:41:58,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:41:58,802 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-24 23:41:58,802 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:41:58,979 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-24 23:41:59,008 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:41:59,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-24 23:41:59,009 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:41:59,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 23:41:59,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 23:41:59,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-24 23:41:59,011 INFO L87 Difference]: Start difference. First operand 14304 states and 17921 transitions. Second operand 9 states. [2018-10-24 23:42:09,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:42:09,973 INFO L93 Difference]: Finished difference Result 28761 states and 39839 transitions. [2018-10-24 23:42:09,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 23:42:09,974 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 399 [2018-10-24 23:42:09,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:42:10,085 INFO L225 Difference]: With dead ends: 28761 [2018-10-24 23:42:10,086 INFO L226 Difference]: Without dead ends: 16791 [2018-10-24 23:42:10,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 825 GetRequests, 804 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2018-10-24 23:42:10,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2018-10-24 23:42:10,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16415. [2018-10-24 23:42:10,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16415 states. [2018-10-24 23:42:10,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16415 states to 16415 states and 21528 transitions. [2018-10-24 23:42:10,725 INFO L78 Accepts]: Start accepts. Automaton has 16415 states and 21528 transitions. Word has length 399 [2018-10-24 23:42:10,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:42:10,726 INFO L481 AbstractCegarLoop]: Abstraction has 16415 states and 21528 transitions. [2018-10-24 23:42:10,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 23:42:10,726 INFO L276 IsEmpty]: Start isEmpty. Operand 16415 states and 21528 transitions. [2018-10-24 23:42:10,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2018-10-24 23:42:10,742 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:42:10,743 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1] [2018-10-24 23:42:10,743 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:42:10,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:42:10,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1848856695, now seen corresponding path program 1 times [2018-10-24 23:42:10,744 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:42:10,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:42:10,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:42:10,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:42:10,746 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:42:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:42:11,484 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-10-24 23:42:11,485 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:42:11,485 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:42:11,485 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 445 with the following transitions: [2018-10-24 23:42:11,486 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [93], [95], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 23:42:11,493 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:42:11,494 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:42:13,534 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:42:13,534 INFO L272 AbstractInterpreter]: Visited 285 different actions 850 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-24 23:42:13,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:42:13,542 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:42:13,542 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:42:13,542 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 23:42:13,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:42:13,551 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:42:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:42:13,687 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:42:13,968 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-10-24 23:42:13,968 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:42:14,552 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-10-24 23:42:14,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 23:42:14,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-10-24 23:42:14,574 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:42:14,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 23:42:14,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 23:42:14,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:42:14,575 INFO L87 Difference]: Start difference. First operand 16415 states and 21528 transitions. Second operand 5 states. [2018-10-24 23:42:19,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:42:19,505 INFO L93 Difference]: Finished difference Result 34383 states and 49116 transitions. [2018-10-24 23:42:19,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 23:42:19,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 444 [2018-10-24 23:42:19,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:42:19,618 INFO L225 Difference]: With dead ends: 34383 [2018-10-24 23:42:19,618 INFO L226 Difference]: Without dead ends: 19966 [2018-10-24 23:42:19,717 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 898 GetRequests, 887 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:42:19,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19966 states. [2018-10-24 23:42:20,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19966 to 19215. [2018-10-24 23:42:20,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19215 states. [2018-10-24 23:42:20,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19215 states to 19215 states and 24240 transitions. [2018-10-24 23:42:20,365 INFO L78 Accepts]: Start accepts. Automaton has 19215 states and 24240 transitions. Word has length 444 [2018-10-24 23:42:20,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:42:20,366 INFO L481 AbstractCegarLoop]: Abstraction has 19215 states and 24240 transitions. [2018-10-24 23:42:20,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 23:42:20,366 INFO L276 IsEmpty]: Start isEmpty. Operand 19215 states and 24240 transitions. [2018-10-24 23:42:20,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2018-10-24 23:42:20,389 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:42:20,389 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:42:20,389 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:42:20,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:42:20,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1491060678, now seen corresponding path program 1 times [2018-10-24 23:42:20,390 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:42:20,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:42:20,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:42:20,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:42:20,392 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:42:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:42:22,195 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 136 proven. 371 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-10-24 23:42:22,196 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:42:22,196 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:42:22,196 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 524 with the following transitions: [2018-10-24 23:42:22,196 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [93], [95], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [842], [847], [849], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 23:42:22,201 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:42:22,201 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:42:23,672 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:42:23,672 INFO L272 AbstractInterpreter]: Visited 214 different actions 1275 times. Merged at 9 different actions 55 times. Widened at 1 different actions 2 times. Found 11 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-24 23:42:23,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:42:23,682 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:42:23,682 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:42:23,682 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 23:42:23,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:42:23,691 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:42:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:42:23,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:42:24,495 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 23:42:25,108 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 458 proven. 41 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-10-24 23:42:25,109 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:42:25,593 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 23:42:26,215 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 47 proven. 460 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-10-24 23:42:26,237 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:42:26,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2018-10-24 23:42:26,237 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:42:26,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 23:42:26,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 23:42:26,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2018-10-24 23:42:26,239 INFO L87 Difference]: Start difference. First operand 19215 states and 24240 transitions. Second operand 13 states. [2018-10-24 23:42:47,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:42:47,900 INFO L93 Difference]: Finished difference Result 57284 states and 74761 transitions. [2018-10-24 23:42:47,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-24 23:42:47,901 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 523 [2018-10-24 23:42:47,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:42:48,108 INFO L225 Difference]: With dead ends: 57284 [2018-10-24 23:42:48,109 INFO L226 Difference]: Without dead ends: 34378 [2018-10-24 23:42:48,332 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1102 GetRequests, 1062 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=413, Invalid=1227, Unknown=0, NotChecked=0, Total=1640 [2018-10-24 23:42:48,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34378 states. [2018-10-24 23:42:49,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34378 to 33392. [2018-10-24 23:42:49,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33392 states. [2018-10-24 23:42:49,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33392 states to 33392 states and 41912 transitions. [2018-10-24 23:42:49,470 INFO L78 Accepts]: Start accepts. Automaton has 33392 states and 41912 transitions. Word has length 523 [2018-10-24 23:42:49,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:42:49,470 INFO L481 AbstractCegarLoop]: Abstraction has 33392 states and 41912 transitions. [2018-10-24 23:42:49,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-24 23:42:49,470 INFO L276 IsEmpty]: Start isEmpty. Operand 33392 states and 41912 transitions. [2018-10-24 23:42:49,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2018-10-24 23:42:49,494 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:42:49,494 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:42:49,495 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:42:49,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:42:49,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1799340992, now seen corresponding path program 1 times [2018-10-24 23:42:49,495 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:42:49,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:42:49,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:42:49,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:42:49,496 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:42:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:42:49,890 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-10-24 23:42:49,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:42:49,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 23:42:49,891 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:42:49,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:42:49,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:42:49,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:42:49,893 INFO L87 Difference]: Start difference. First operand 33392 states and 41912 transitions. Second operand 3 states. [2018-10-24 23:42:58,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:42:58,056 INFO L93 Difference]: Finished difference Result 65149 states and 82489 transitions. [2018-10-24 23:42:58,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:42:58,056 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 531 [2018-10-24 23:42:58,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:42:58,303 INFO L225 Difference]: With dead ends: 65149 [2018-10-24 23:42:58,303 INFO L226 Difference]: Without dead ends: 34346 [2018-10-24 23:42:58,551 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:42:58,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34346 states. [2018-10-24 23:42:59,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34346 to 34028. [2018-10-24 23:42:59,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34028 states. [2018-10-24 23:42:59,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34028 states to 34028 states and 42663 transitions. [2018-10-24 23:42:59,519 INFO L78 Accepts]: Start accepts. Automaton has 34028 states and 42663 transitions. Word has length 531 [2018-10-24 23:42:59,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:42:59,520 INFO L481 AbstractCegarLoop]: Abstraction has 34028 states and 42663 transitions. [2018-10-24 23:42:59,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:42:59,520 INFO L276 IsEmpty]: Start isEmpty. Operand 34028 states and 42663 transitions. [2018-10-24 23:42:59,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2018-10-24 23:42:59,546 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:42:59,547 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 23:42:59,547 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:42:59,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:42:59,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1632677973, now seen corresponding path program 1 times [2018-10-24 23:42:59,548 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:42:59,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:42:59,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:42:59,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:42:59,549 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:42:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:43:01,148 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 221 proven. 400 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-10-24 23:43:01,149 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:43:01,149 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:43:01,149 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 609 with the following transitions: [2018-10-24 23:43:01,149 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [93], [95], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [842], [847], [849], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1115], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 23:43:01,153 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:43:01,153 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:43:02,591 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:43:02,591 INFO L272 AbstractInterpreter]: Visited 214 different actions 1276 times. Merged at 9 different actions 56 times. Widened at 1 different actions 2 times. Found 11 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-24 23:43:02,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:43:02,598 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:43:02,598 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:43:02,598 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 23:43:02,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:43:02,606 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:43:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:43:03,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:43:03,956 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 487 proven. 126 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-10-24 23:43:03,956 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:43:05,015 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 47 proven. 574 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-10-24 23:43:05,038 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:43:05,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2018-10-24 23:43:05,038 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:43:05,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 23:43:05,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 23:43:05,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2018-10-24 23:43:05,040 INFO L87 Difference]: Start difference. First operand 34028 states and 42663 transitions. Second operand 13 states. [2018-10-24 23:43:24,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:43:24,478 INFO L93 Difference]: Finished difference Result 74143 states and 92651 transitions. [2018-10-24 23:43:24,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-24 23:43:24,478 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 608 [2018-10-24 23:43:24,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:43:24,711 INFO L225 Difference]: With dead ends: 74143 [2018-10-24 23:43:24,712 INFO L226 Difference]: Without dead ends: 36415 [2018-10-24 23:43:24,954 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1274 GetRequests, 1231 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=427, Invalid=1295, Unknown=0, NotChecked=0, Total=1722 [2018-10-24 23:43:24,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36415 states. [2018-10-24 23:43:25,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36415 to 34981. [2018-10-24 23:43:25,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34981 states. [2018-10-24 23:43:26,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34981 states to 34981 states and 43310 transitions. [2018-10-24 23:43:26,046 INFO L78 Accepts]: Start accepts. Automaton has 34981 states and 43310 transitions. Word has length 608 [2018-10-24 23:43:26,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:43:26,047 INFO L481 AbstractCegarLoop]: Abstraction has 34981 states and 43310 transitions. [2018-10-24 23:43:26,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-24 23:43:26,047 INFO L276 IsEmpty]: Start isEmpty. Operand 34981 states and 43310 transitions. [2018-10-24 23:43:26,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2018-10-24 23:43:26,072 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:43:26,072 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:43:26,072 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:43:26,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:43:26,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1892534998, now seen corresponding path program 1 times [2018-10-24 23:43:26,075 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:43:26,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:43:26,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:43:26,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:43:26,076 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:43:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-24 23:43:26,545 WARN L187 SmtUtils]: Removed 1 from assertion stack [2018-10-24 23:43:26,546 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 23:43:26,550 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 23:43:26,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:43:26 BoogieIcfgContainer [2018-10-24 23:43:26,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 23:43:26,551 INFO L168 Benchmark]: Toolchain (without parser) took 225762.77 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 1.5 GB in the end (delta: -96.5 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 23:43:26,553 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. [2018-10-24 23:43:26,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1342.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 23:43:26,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 422.94 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -871.1 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-24 23:43:26,555 INFO L168 Benchmark]: Boogie Preprocessor took 225.93 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: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2018-10-24 23:43:26,555 INFO L168 Benchmark]: RCFGBuilder took 8630.61 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 306.7 MB). Peak memory consumption was 306.7 MB. Max. memory is 7.1 GB. [2018-10-24 23:43:26,556 INFO L168 Benchmark]: TraceAbstraction took 215136.13 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 1.5 GB in the end (delta: 334.2 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-24 23:43:26,561 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 1342.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 422.94 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -871.1 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 225.93 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: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8630.61 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 306.7 MB). Peak memory consumption was 306.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215136.13 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 1.5 GB in the end (delta: 334.2 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 31]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 31). Cancelled while BasicCegarLoop was analyzing trace of length 614 with TraceHistMax 5,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 215.0s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 179.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3289 SDtfs, 26987 SDslu, 3579 SDs, 0 SdLazy, 42933 SolverSat, 8015 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 144.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 5976 GetRequests, 5762 SyntacticMatches, 16 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34981occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.3s AbstIntTime, 7 AbstIntIterations, 1 AbstIntStrong, 0.9960129940596572 AbsIntWeakeningRatio, 0.13402061855670103 AbsIntAvgWeakeningVarsNumRemoved, 0.9639175257731959 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 6130 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 12.4s InterpolantComputationTime, 6689 NumberOfCodeBlocks, 6689 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 9412 ConstructedInterpolants, 0 QuantifiedInterpolants, 24243606 SizeOfPredicates, 19 NumberOfNonLiveVariables, 4092 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 23 InterpolantComputations, 5 PerfectInterpolantSequences, 5228/7303 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown