java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:45:43,891 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:45:43,893 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:45:43,905 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:45:43,905 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:45:43,906 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:45:43,908 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:45:43,910 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:45:43,911 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:45:43,912 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:45:43,913 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:45:43,914 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:45:43,915 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:45:43,916 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:45:43,917 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:45:43,917 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:45:43,918 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:45:43,920 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:45:43,922 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:45:43,924 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:45:43,925 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:45:43,926 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:45:43,929 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:45:43,929 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:45:43,930 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:45:43,931 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:45:43,932 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:45:43,933 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:45:43,933 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:45:43,935 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:45:43,935 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:45:43,936 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:45:43,936 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:45:43,936 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:45:43,937 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:45:43,938 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:45:43,938 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 20:45:43,954 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:45:43,955 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:45:43,955 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:45:43,956 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:45:43,956 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:45:43,956 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:45:43,956 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:45:43,956 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:45:43,957 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:45:43,957 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:45:43,957 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:45:43,957 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:45:43,957 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:45:43,958 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:45:43,958 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:45:43,959 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:45:43,959 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:45:43,959 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:45:43,959 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:45:43,959 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:45:43,960 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:45:43,960 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:45:43,960 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:45:43,960 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:45:43,960 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:45:43,961 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:45:43,961 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:45:43,961 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:45:43,961 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:45:43,961 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:45:43,961 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:45:43,962 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:45:43,962 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:45:43,962 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:45:43,962 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:45:44,030 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:45:44,049 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:45:44,053 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:45:44,055 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:45:44,055 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:45:44,056 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label42_true-unreach-call.c [2018-11-07 20:45:44,129 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9de565e78/3aca3ccc4dee44f8ac3cb7de605700c9/FLAG21ddf3b35 [2018-11-07 20:45:44,776 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:45:44,777 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label42_true-unreach-call.c [2018-11-07 20:45:44,799 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9de565e78/3aca3ccc4dee44f8ac3cb7de605700c9/FLAG21ddf3b35 [2018-11-07 20:45:44,817 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9de565e78/3aca3ccc4dee44f8ac3cb7de605700c9 [2018-11-07 20:45:44,828 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:45:44,829 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:45:44,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:45:44,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:45:44,841 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:45:44,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:45:44" (1/1) ... [2018-11-07 20:45:44,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e24fa58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:44, skipping insertion in model container [2018-11-07 20:45:44,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:45:44" (1/1) ... [2018-11-07 20:45:44,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:45:44,958 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:45:45,923 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:45:45,928 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:45:46,303 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:45:46,324 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:45:46,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:46 WrapperNode [2018-11-07 20:45:46,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:45:46,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:45:46,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:45:46,327 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:45:46,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:46" (1/1) ... [2018-11-07 20:45:46,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:46" (1/1) ... [2018-11-07 20:45:46,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:45:46,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:45:46,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:45:46,548 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:45:46,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:46" (1/1) ... [2018-11-07 20:45:46,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:46" (1/1) ... [2018-11-07 20:45:46,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:46" (1/1) ... [2018-11-07 20:45:46,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:46" (1/1) ... [2018-11-07 20:45:46,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:46" (1/1) ... [2018-11-07 20:45:46,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:46" (1/1) ... [2018-11-07 20:45:46,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:46" (1/1) ... [2018-11-07 20:45:46,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:45:46,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:45:46,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:45:46,730 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:45:46,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:45:46,800 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:45:46,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:45:46,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:45:46,800 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:45:46,801 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:45:46,801 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:45:46,801 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:45:46,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:45:46,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:45:46,802 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:45:46,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:45:52,345 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:45:52,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:45:52 BoogieIcfgContainer [2018-11-07 20:45:52,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:45:52,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:45:52,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:45:52,352 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:45:52,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:45:44" (1/3) ... [2018-11-07 20:45:52,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52377485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:45:52, skipping insertion in model container [2018-11-07 20:45:52,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:46" (2/3) ... [2018-11-07 20:45:52,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52377485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:45:52, skipping insertion in model container [2018-11-07 20:45:52,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:45:52" (3/3) ... [2018-11-07 20:45:52,356 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label42_true-unreach-call.c [2018-11-07 20:45:52,366 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:45:52,376 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:45:52,393 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:45:52,434 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:45:52,435 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:45:52,435 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:45:52,435 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:45:52,435 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:45:52,435 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:45:52,436 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:45:52,436 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:45:52,470 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 20:45:52,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-07 20:45:52,479 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:45:52,481 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:45:52,483 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:45:52,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:45:52,494 INFO L82 PathProgramCache]: Analyzing trace with hash 592671889, now seen corresponding path program 1 times [2018-11-07 20:45:52,497 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:45:52,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:52,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:45:52,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:52,550 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:45:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:45:53,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:45:53,047 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:45:53,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:45:53,047 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:45:53,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:45:53,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:45:53,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:45:53,078 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 20:45:59,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:45:59,942 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-07 20:45:59,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:45:59,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-11-07 20:45:59,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:45:59,971 INFO L225 Difference]: With dead ends: 1558 [2018-11-07 20:45:59,971 INFO L226 Difference]: Without dead ends: 1114 [2018-11-07 20:45:59,982 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:46:00,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-07 20:46:00,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1091. [2018-11-07 20:46:00,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2018-11-07 20:46:00,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1853 transitions. [2018-11-07 20:46:00,122 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1853 transitions. Word has length 53 [2018-11-07 20:46:00,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:46:00,123 INFO L480 AbstractCegarLoop]: Abstraction has 1091 states and 1853 transitions. [2018-11-07 20:46:00,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:46:00,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1853 transitions. [2018-11-07 20:46:00,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-07 20:46:00,135 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:46:00,135 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:46:00,136 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:46:00,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:00,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1626960388, now seen corresponding path program 1 times [2018-11-07 20:46:00,136 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:46:00,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:00,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:46:00,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:00,138 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:46:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:46:00,397 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:46:00,398 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:46:00,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:46:00,398 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:46:00,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:46:00,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:46:00,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:46:00,401 INFO L87 Difference]: Start difference. First operand 1091 states and 1853 transitions. Second operand 5 states. [2018-11-07 20:46:05,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:46:05,585 INFO L93 Difference]: Finished difference Result 3246 states and 5588 transitions. [2018-11-07 20:46:05,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 20:46:05,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2018-11-07 20:46:05,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:46:05,617 INFO L225 Difference]: With dead ends: 3246 [2018-11-07 20:46:05,617 INFO L226 Difference]: Without dead ends: 2161 [2018-11-07 20:46:05,624 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:46:05,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2018-11-07 20:46:05,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2114. [2018-11-07 20:46:05,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2018-11-07 20:46:05,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3176 transitions. [2018-11-07 20:46:05,733 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3176 transitions. Word has length 126 [2018-11-07 20:46:05,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:46:05,734 INFO L480 AbstractCegarLoop]: Abstraction has 2114 states and 3176 transitions. [2018-11-07 20:46:05,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:46:05,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3176 transitions. [2018-11-07 20:46:05,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 20:46:05,743 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:46:05,743 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:46:05,743 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:46:05,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:05,744 INFO L82 PathProgramCache]: Analyzing trace with hash 108586508, now seen corresponding path program 1 times [2018-11-07 20:46:05,744 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:46:05,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:05,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:46:05,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:05,748 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:46:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:46:05,974 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:46:05,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:46:05,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:46:05,975 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:46:05,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:46:05,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:46:05,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:46:05,977 INFO L87 Difference]: Start difference. First operand 2114 states and 3176 transitions. Second operand 4 states. [2018-11-07 20:46:11,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:46:11,639 INFO L93 Difference]: Finished difference Result 7944 states and 12441 transitions. [2018-11-07 20:46:11,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:46:11,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2018-11-07 20:46:11,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:46:11,691 INFO L225 Difference]: With dead ends: 7944 [2018-11-07 20:46:11,691 INFO L226 Difference]: Without dead ends: 5836 [2018-11-07 20:46:11,716 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:46:11,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5836 states. [2018-11-07 20:46:11,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5836 to 5834. [2018-11-07 20:46:11,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5834 states. [2018-11-07 20:46:11,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 8173 transitions. [2018-11-07 20:46:11,907 INFO L78 Accepts]: Start accepts. Automaton has 5834 states and 8173 transitions. Word has length 134 [2018-11-07 20:46:11,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:46:11,908 INFO L480 AbstractCegarLoop]: Abstraction has 5834 states and 8173 transitions. [2018-11-07 20:46:11,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:46:11,908 INFO L276 IsEmpty]: Start isEmpty. Operand 5834 states and 8173 transitions. [2018-11-07 20:46:11,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-11-07 20:46:11,924 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:46:11,924 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:46:11,925 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:46:11,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:11,925 INFO L82 PathProgramCache]: Analyzing trace with hash 2141238506, now seen corresponding path program 1 times [2018-11-07 20:46:11,925 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:46:11,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:11,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:46:11,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:11,927 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:46:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:46:12,260 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:46:12,430 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 92 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:46:12,430 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:46:12,431 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:46:12,432 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-11-07 20:46:12,434 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [397], [399], [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], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:46:12,485 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:46:12,485 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:46:13,086 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:46:13,088 INFO L272 AbstractInterpreter]: Visited 105 different actions 105 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 20:46:13,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:13,131 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:46:13,607 INFO L227 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 78% of their original sizes. [2018-11-07 20:46:13,608 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:46:13,836 INFO L415 sIntCurrentIteration]: We unified 222 AI predicates to 222 [2018-11-07 20:46:13,836 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:46:13,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:46:13,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-07 20:46:13,837 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:46:13,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 20:46:13,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 20:46:13,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:46:13,839 INFO L87 Difference]: Start difference. First operand 5834 states and 8173 transitions. Second operand 8 states. [2018-11-07 20:46:16,473 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:46:31,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:46:31,753 INFO L93 Difference]: Finished difference Result 11972 states and 16730 transitions. [2018-11-07 20:46:31,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 20:46:31,753 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2018-11-07 20:46:31,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:46:31,783 INFO L225 Difference]: With dead ends: 11972 [2018-11-07 20:46:31,783 INFO L226 Difference]: Without dead ends: 6144 [2018-11-07 20:46:31,814 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 224 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:46:31,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6144 states. [2018-11-07 20:46:31,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6144 to 6142. [2018-11-07 20:46:31,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6142 states. [2018-11-07 20:46:31,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 8490 transitions. [2018-11-07 20:46:31,964 INFO L78 Accepts]: Start accepts. Automaton has 6142 states and 8490 transitions. Word has length 223 [2018-11-07 20:46:31,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:46:31,965 INFO L480 AbstractCegarLoop]: Abstraction has 6142 states and 8490 transitions. [2018-11-07 20:46:31,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 20:46:31,965 INFO L276 IsEmpty]: Start isEmpty. Operand 6142 states and 8490 transitions. [2018-11-07 20:46:31,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-11-07 20:46:31,980 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:46:31,980 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:46:31,981 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:46:31,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:31,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1234707616, now seen corresponding path program 1 times [2018-11-07 20:46:31,981 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:46:31,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:31,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:46:31,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:31,983 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:46:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:46:32,398 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:46:32,499 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 144 proven. 212 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-07 20:46:32,499 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:46:32,500 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:46:32,500 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 320 with the following transitions: [2018-11-07 20:46:32,500 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [397], [399], [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], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:46:32,505 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:46:32,506 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:46:32,575 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:46:33,143 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:46:33,143 INFO L272 AbstractInterpreter]: Visited 109 different actions 727 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:46:33,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:33,150 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:46:33,644 INFO L227 lantSequenceWeakener]: Weakened 60 states. On average, predicates are now at 77.58% of their original sizes. [2018-11-07 20:46:33,644 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:46:35,092 INFO L415 sIntCurrentIteration]: We unified 318 AI predicates to 318 [2018-11-07 20:46:35,093 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:46:35,093 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:46:35,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-07 20:46:35,094 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:46:35,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 20:46:35,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 20:46:35,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:46:35,096 INFO L87 Difference]: Start difference. First operand 6142 states and 8490 transitions. Second operand 19 states. [2018-11-07 20:47:23,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:47:23,301 INFO L93 Difference]: Finished difference Result 14302 states and 19511 transitions. [2018-11-07 20:47:23,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-07 20:47:23,301 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 319 [2018-11-07 20:47:23,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:47:23,337 INFO L225 Difference]: With dead ends: 14302 [2018-11-07 20:47:23,337 INFO L226 Difference]: Without dead ends: 8474 [2018-11-07 20:47:23,364 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 337 GetRequests, 297 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=314, Invalid=1092, Unknown=0, NotChecked=0, Total=1406 [2018-11-07 20:47:23,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8474 states. [2018-11-07 20:47:23,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8474 to 7103. [2018-11-07 20:47:23,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7103 states. [2018-11-07 20:47:23,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7103 states to 7103 states and 9496 transitions. [2018-11-07 20:47:23,539 INFO L78 Accepts]: Start accepts. Automaton has 7103 states and 9496 transitions. Word has length 319 [2018-11-07 20:47:23,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:47:23,539 INFO L480 AbstractCegarLoop]: Abstraction has 7103 states and 9496 transitions. [2018-11-07 20:47:23,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 20:47:23,540 INFO L276 IsEmpty]: Start isEmpty. Operand 7103 states and 9496 transitions. [2018-11-07 20:47:23,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-11-07 20:47:23,554 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:47:23,554 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:47:23,555 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:47:23,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:23,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1124772304, now seen corresponding path program 1 times [2018-11-07 20:47:23,555 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:47:23,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:23,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:47:23,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:23,557 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:47:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:47:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 20:47:24,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:47:24,254 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:47:24,254 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 411 with the following transitions: [2018-11-07 20:47:24,255 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [397], [399], [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], [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], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1623], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:47:24,266 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:47:24,267 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:47:24,467 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:47:25,750 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:47:25,751 INFO L272 AbstractInterpreter]: Visited 296 different actions 885 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 20:47:25,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:25,759 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:47:25,759 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:47:25,759 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:47:25,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:47:25,772 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:47:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:47:25,934 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:47:51,089 WARN L179 SmtUtils]: Spent 24.55 s on a formula simplification. DAG size of input: 472 DAG size of output: 156 [2018-11-07 20:47:53,912 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 9 proven. 86 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 20:47:53,913 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:47:54,293 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 20:47:54,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 20:47:54,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-11-07 20:47:54,315 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:47:54,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:47:54,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:47:54,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=77, Unknown=1, NotChecked=0, Total=110 [2018-11-07 20:47:54,316 INFO L87 Difference]: Start difference. First operand 7103 states and 9496 transitions. Second operand 3 states. [2018-11-07 20:47:57,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:47:57,622 INFO L93 Difference]: Finished difference Result 19160 states and 26845 transitions. [2018-11-07 20:47:57,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:47:57,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 410 [2018-11-07 20:47:57,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:47:57,693 INFO L225 Difference]: With dead ends: 19160 [2018-11-07 20:47:57,693 INFO L226 Difference]: Without dead ends: 9149 [2018-11-07 20:47:57,755 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 817 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=32, Invalid=77, Unknown=1, NotChecked=0, Total=110 [2018-11-07 20:47:57,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9149 states. [2018-11-07 20:47:57,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9149 to 9148. [2018-11-07 20:47:57,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9148 states. [2018-11-07 20:47:58,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9148 states to 9148 states and 11744 transitions. [2018-11-07 20:47:58,036 INFO L78 Accepts]: Start accepts. Automaton has 9148 states and 11744 transitions. Word has length 410 [2018-11-07 20:47:58,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:47:58,036 INFO L480 AbstractCegarLoop]: Abstraction has 9148 states and 11744 transitions. [2018-11-07 20:47:58,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:47:58,038 INFO L276 IsEmpty]: Start isEmpty. Operand 9148 states and 11744 transitions. [2018-11-07 20:47:58,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2018-11-07 20:47:58,138 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:47:58,139 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:47:58,139 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:47:58,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:58,139 INFO L82 PathProgramCache]: Analyzing trace with hash -403770916, now seen corresponding path program 1 times [2018-11-07 20:47:58,140 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:47:58,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:58,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:47:58,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:58,141 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:47:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:47:59,891 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 611 proven. 2 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2018-11-07 20:47:59,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:47:59,891 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:47:59,891 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 754 with the following transitions: [2018-11-07 20:47:59,892 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [397], [399], [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], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [742], [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], [1359], [1362], [1366], [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] [2018-11-07 20:47:59,899 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:47:59,899 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:48:00,176 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:48:00,535 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:48:00,535 INFO L272 AbstractInterpreter]: Visited 285 different actions 564 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:48:00,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:48:00,573 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:48:01,718 INFO L227 lantSequenceWeakener]: Weakened 288 states. On average, predicates are now at 79.51% of their original sizes. [2018-11-07 20:48:01,718 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:48:02,355 INFO L415 sIntCurrentIteration]: We unified 752 AI predicates to 752 [2018-11-07 20:48:02,356 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:48:02,356 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:48:02,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-11-07 20:48:02,356 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:48:02,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 20:48:02,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 20:48:02,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-07 20:48:02,358 INFO L87 Difference]: Start difference. First operand 9148 states and 11744 transitions. Second operand 21 states. [2018-11-07 20:49:01,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:49:01,721 INFO L93 Difference]: Finished difference Result 18295 states and 23602 transitions. [2018-11-07 20:49:01,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-07 20:49:01,722 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 753 [2018-11-07 20:49:01,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:49:01,757 INFO L225 Difference]: With dead ends: 18295 [2018-11-07 20:49:01,757 INFO L226 Difference]: Without dead ends: 10066 [2018-11-07 20:49:01,783 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 769 GetRequests, 733 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=266, Invalid=1140, Unknown=0, NotChecked=0, Total=1406 [2018-11-07 20:49:01,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10066 states. [2018-11-07 20:49:01,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10066 to 9458. [2018-11-07 20:49:01,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9458 states. [2018-11-07 20:49:01,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9458 states to 9458 states and 12062 transitions. [2018-11-07 20:49:01,965 INFO L78 Accepts]: Start accepts. Automaton has 9458 states and 12062 transitions. Word has length 753 [2018-11-07 20:49:01,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:49:01,965 INFO L480 AbstractCegarLoop]: Abstraction has 9458 states and 12062 transitions. [2018-11-07 20:49:01,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 20:49:01,966 INFO L276 IsEmpty]: Start isEmpty. Operand 9458 states and 12062 transitions. [2018-11-07 20:49:02,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2018-11-07 20:49:02,046 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:49:02,047 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:49:02,047 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:49:02,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:49:02,048 INFO L82 PathProgramCache]: Analyzing trace with hash -445707996, now seen corresponding path program 1 times [2018-11-07 20:49:02,048 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:49:02,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:49:02,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:49:02,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:49:02,049 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:49:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:49:03,226 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 409 proven. 106 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2018-11-07 20:49:03,227 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:49:03,227 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:49:03,227 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 785 with the following transitions: [2018-11-07 20:49:03,228 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [397], [399], [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], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [742], [743], [747], [751], [755], [759], [762], [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], [1359], [1362], [1366], [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] [2018-11-07 20:49:03,233 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:49:03,234 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:49:03,429 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:49:04,226 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:49:04,226 INFO L272 AbstractInterpreter]: Visited 287 different actions 1131 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:49:04,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:49:04,235 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:49:04,235 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:49:04,235 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:49:04,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:49:04,244 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:49:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:49:04,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:49:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2018-11-07 20:49:05,212 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:49:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2018-11-07 20:49:05,721 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:49:05,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-11-07 20:49:05,722 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:49:05,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:49:05,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:49:05,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-07 20:49:05,723 INFO L87 Difference]: Start difference. First operand 9458 states and 12062 transitions. Second operand 3 states. [2018-11-07 20:49:08,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:49:08,184 INFO L93 Difference]: Finished difference Result 20473 states and 27272 transitions. [2018-11-07 20:49:08,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:49:08,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 784 [2018-11-07 20:49:08,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:49:08,246 INFO L225 Difference]: With dead ends: 20473 [2018-11-07 20:49:08,246 INFO L226 Difference]: Without dead ends: 12244 [2018-11-07 20:49:08,292 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1573 GetRequests, 1567 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-07 20:49:08,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12244 states. [2018-11-07 20:49:08,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12244 to 12241. [2018-11-07 20:49:08,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12241 states. [2018-11-07 20:49:08,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12241 states to 12241 states and 14771 transitions. [2018-11-07 20:49:08,538 INFO L78 Accepts]: Start accepts. Automaton has 12241 states and 14771 transitions. Word has length 784 [2018-11-07 20:49:08,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:49:08,539 INFO L480 AbstractCegarLoop]: Abstraction has 12241 states and 14771 transitions. [2018-11-07 20:49:08,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:49:08,540 INFO L276 IsEmpty]: Start isEmpty. Operand 12241 states and 14771 transitions. [2018-11-07 20:49:08,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2018-11-07 20:49:08,613 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:49:08,614 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:49:08,614 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:49:08,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:49:08,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1092632034, now seen corresponding path program 1 times [2018-11-07 20:49:08,615 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:49:08,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:49:08,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:49:08,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:49:08,617 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:49:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:49:09,929 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 409 proven. 106 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2018-11-07 20:49:09,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:49:09,930 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:49:09,930 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 785 with the following transitions: [2018-11-07 20:49:09,930 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [397], [399], [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], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [742], [743], [747], [751], [755], [759], [762], [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], [1359], [1364], [1366], [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] [2018-11-07 20:49:09,935 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:49:09,935 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:49:10,130 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:49:11,357 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:49:11,357 INFO L272 AbstractInterpreter]: Visited 288 different actions 1427 times. Merged at 8 different actions 37 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 20:49:11,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:49:11,364 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:49:11,364 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:49:11,364 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:49:11,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:49:11,377 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:49:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:49:11,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:49:12,486 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 806 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-11-07 20:49:12,486 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:49:12,972 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 409 proven. 106 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2018-11-07 20:49:12,994 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:49:12,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 20:49:12,994 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:49:12,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 20:49:12,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 20:49:12,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:49:12,996 INFO L87 Difference]: Start difference. First operand 12241 states and 14771 transitions. Second operand 9 states. [2018-11-07 20:49:20,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:49:20,049 INFO L93 Difference]: Finished difference Result 31746 states and 42394 transitions. [2018-11-07 20:49:20,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 20:49:20,049 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 784 [2018-11-07 20:49:20,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:49:20,172 INFO L225 Difference]: With dead ends: 31746 [2018-11-07 20:49:20,172 INFO L226 Difference]: Without dead ends: 20734 [2018-11-07 20:49:20,262 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1595 GetRequests, 1574 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2018-11-07 20:49:20,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20734 states. [2018-11-07 20:49:20,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20734 to 20700. [2018-11-07 20:49:20,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20700 states. [2018-11-07 20:49:20,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20700 states to 20700 states and 26577 transitions. [2018-11-07 20:49:20,777 INFO L78 Accepts]: Start accepts. Automaton has 20700 states and 26577 transitions. Word has length 784 [2018-11-07 20:49:20,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:49:20,778 INFO L480 AbstractCegarLoop]: Abstraction has 20700 states and 26577 transitions. [2018-11-07 20:49:20,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 20:49:20,778 INFO L276 IsEmpty]: Start isEmpty. Operand 20700 states and 26577 transitions. [2018-11-07 20:49:20,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2018-11-07 20:49:20,898 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:49:20,899 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:49:20,899 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:49:20,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:49:20,900 INFO L82 PathProgramCache]: Analyzing trace with hash -171752628, now seen corresponding path program 1 times [2018-11-07 20:49:20,900 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:49:20,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:49:20,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:49:20,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:49:20,901 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:49:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:49:22,297 WARN L179 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 11 [2018-11-07 20:49:22,680 WARN L179 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 Received shutdown request... [2018-11-07 20:49:24,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 871 proven. 2 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2018-11-07 20:49:24,103 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:49:24,103 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:49:24,104 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 967 with the following transitions: [2018-11-07 20:49:24,104 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [397], [399], [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], [641], [645], [649], [653], [657], [660], [663], [667], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [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], [1159], [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], [1386], [1389], [1393], [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] [2018-11-07 20:49:24,109 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:49:24,110 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:49:24,110 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 20:49:24,111 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 20:49:24,111 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 20:49:24,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:49:24,111 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:49:24,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:49:24,123 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:49:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:49:24,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:49:24,438 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 20:49:24,639 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:49:24,640 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:49:24,646 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:49:24,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:49:24 BoogieIcfgContainer [2018-11-07 20:49:24,646 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:49:24,647 INFO L168 Benchmark]: Toolchain (without parser) took 219818.84 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -370.8 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-11-07 20:49:24,648 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:49:24,649 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1491.16 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. [2018-11-07 20:49:24,649 INFO L168 Benchmark]: Boogie Procedure Inliner took 221.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -905.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 20:49:24,650 INFO L168 Benchmark]: Boogie Preprocessor took 181.93 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-07 20:49:24,651 INFO L168 Benchmark]: RCFGBuilder took 5617.18 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: 289.6 MB). Peak memory consumption was 289.6 MB. Max. memory is 7.1 GB. [2018-11-07 20:49:24,657 INFO L168 Benchmark]: TraceAbstraction took 212297.96 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 125.3 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-07 20:49:24,662 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1491.16 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 221.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -905.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 181.93 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5617.18 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: 289.6 MB). Peak memory consumption was 289.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212297.96 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 125.3 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 145). Cancelled while BasicCegarLoop was analyzing trace of length 967 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 10 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 212.2s OverallTime, 10 OverallIterations, 6 TraceHistogramMax, 156.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3582 SDtfs, 17469 SDslu, 2536 SDs, 0 SdLazy, 26995 SolverSat, 4135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 70.0s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 5348 GetRequests, 5214 SyntacticMatches, 11 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 32.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20700occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.9s AbstIntTime, 7 AbstIntIterations, 3 AbstIntStrong, 0.9977903506885769 AbsIntWeakeningRatio, 0.07430340557275542 AbsIntAvgWeakeningVarsNumRemoved, 16.071981424148607 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 2091 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 35.1s InterpolantComputationTime, 5564 NumberOfCodeBlocks, 5564 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 7527 ConstructedInterpolants, 49 QuantifiedInterpolants, 10397985 SizeOfPredicates, 3 NumberOfNonLiveVariables, 2679 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 6994/7774 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown