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 --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label40_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 12:06:00,859 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 12:06:00,862 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 12:06:00,874 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 12:06:00,875 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 12:06:00,876 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 12:06:00,877 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 12:06:00,879 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 12:06:00,881 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 12:06:00,882 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 12:06:00,883 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 12:06:00,885 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 12:06:00,886 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 12:06:00,889 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 12:06:00,890 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 12:06:00,891 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 12:06:00,896 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 12:06:00,900 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 12:06:00,904 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 12:06:00,906 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 12:06:00,907 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 12:06:00,911 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 12:06:00,914 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 12:06:00,914 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 12:06:00,914 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 12:06:00,919 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 12:06:00,920 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 12:06:00,921 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 12:06:00,922 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 12:06:00,924 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 12:06:00,924 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 12:06:00,925 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 12:06:00,925 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 12:06:00,925 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 12:06:00,926 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 12:06:00,927 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 12:06:00,927 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 12:06:00,946 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 12:06:00,947 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 12:06:00,947 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 12:06:00,948 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 12:06:00,948 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 12:06:00,948 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 12:06:00,948 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 12:06:00,949 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 12:06:00,949 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 12:06:00,949 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 12:06:00,949 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 12:06:00,949 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 12:06:00,950 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 12:06:00,950 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 12:06:00,951 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 12:06:00,951 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 12:06:00,951 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 12:06:00,951 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 12:06:00,951 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 12:06:00,952 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 12:06:00,952 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 12:06:00,952 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 12:06:00,952 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 12:06:00,952 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 12:06:00,953 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:06:00,954 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 12:06:00,954 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 12:06:00,954 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 12:06:00,954 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 12:06:00,955 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 12:06:00,955 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 12:06:00,955 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 12:06:00,955 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 12:06:00,956 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 12:06:01,021 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 12:06:01,040 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 12:06:01,049 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 12:06:01,051 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 12:06:01,051 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 12:06:01,053 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label40_true-unreach-call.c [2018-09-18 12:06:01,428 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b42cf3fa0/724a40e07b8b4215a6e4789ceacfedb3/FLAG8a8a69782 [2018-09-18 12:06:01,834 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 12:06:01,837 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label40_true-unreach-call.c [2018-09-18 12:06:01,858 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b42cf3fa0/724a40e07b8b4215a6e4789ceacfedb3/FLAG8a8a69782 [2018-09-18 12:06:01,874 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b42cf3fa0/724a40e07b8b4215a6e4789ceacfedb3 [2018-09-18 12:06:01,884 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 12:06:01,888 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 12:06:01,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 12:06:01,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 12:06:01,895 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 12:06:01,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:06:01" (1/1) ... [2018-09-18 12:06:01,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43619b37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:01, skipping insertion in model container [2018-09-18 12:06:01,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:06:01" (1/1) ... [2018-09-18 12:06:01,912 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 12:06:02,698 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:06:02,721 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 12:06:02,960 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:06:03,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03 WrapperNode [2018-09-18 12:06:03,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 12:06:03,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 12:06:03,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 12:06:03,069 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 12:06:03,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03" (1/1) ... [2018-09-18 12:06:03,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03" (1/1) ... [2018-09-18 12:06:03,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 12:06:03,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 12:06:03,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 12:06:03,297 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 12:06:03,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03" (1/1) ... [2018-09-18 12:06:03,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03" (1/1) ... [2018-09-18 12:06:03,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03" (1/1) ... [2018-09-18 12:06:03,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03" (1/1) ... [2018-09-18 12:06:03,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03" (1/1) ... [2018-09-18 12:06:03,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03" (1/1) ... [2018-09-18 12:06:03,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03" (1/1) ... [2018-09-18 12:06:03,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 12:06:03,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 12:06:03,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 12:06:03,824 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 12:06:03,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03" (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 [2018-09-18 12:06:03,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 12:06:03,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 12:06:03,899 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 12:06:03,899 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 12:06:03,900 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 12:06:03,900 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 12:06:03,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 12:06:03,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 12:06:03,900 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 12:06:03,900 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 12:06:09,902 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 12:06:09,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:06:09 BoogieIcfgContainer [2018-09-18 12:06:09,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 12:06:09,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 12:06:09,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 12:06:09,908 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 12:06:09,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:06:01" (1/3) ... [2018-09-18 12:06:09,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5996d2b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:06:09, skipping insertion in model container [2018-09-18 12:06:09,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03" (2/3) ... [2018-09-18 12:06:09,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5996d2b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:06:09, skipping insertion in model container [2018-09-18 12:06:09,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:06:09" (3/3) ... [2018-09-18 12:06:09,912 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label40_true-unreach-call.c [2018-09-18 12:06:09,922 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 12:06:09,933 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 12:06:09,988 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 12:06:09,988 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 12:06:09,988 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 12:06:09,989 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 12:06:09,989 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 12:06:09,989 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 12:06:09,989 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 12:06:09,989 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 12:06:09,990 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 12:06:10,021 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-09-18 12:06:10,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-18 12:06:10,032 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:06:10,034 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:06:10,035 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:06:10,041 INFO L82 PathProgramCache]: Analyzing trace with hash 2071799652, now seen corresponding path program 1 times [2018-09-18 12:06:10,043 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:06:10,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:10,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:10,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:10,103 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:06:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:10,494 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:06:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:06:10,625 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:06:10,625 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 12:06:10,625 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:06:10,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:06:10,647 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:06:10,648 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:06:10,651 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-09-18 12:06:15,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:06:15,354 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-09-18 12:06:15,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:06:15,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2018-09-18 12:06:15,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:06:15,386 INFO L225 Difference]: With dead ends: 1156 [2018-09-18 12:06:15,386 INFO L226 Difference]: Without dead ends: 744 [2018-09-18 12:06:15,395 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:06:15,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-09-18 12:06:15,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-09-18 12:06:15,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-09-18 12:06:15,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-09-18 12:06:15,568 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 70 [2018-09-18 12:06:15,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:06:15,569 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-09-18 12:06:15,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:06:15,570 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-09-18 12:06:15,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-09-18 12:06:15,580 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:06:15,581 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:06:15,581 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:06:15,581 INFO L82 PathProgramCache]: Analyzing trace with hash -3052801, now seen corresponding path program 1 times [2018-09-18 12:06:15,581 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:06:15,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:15,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:15,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:15,583 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:06:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:15,972 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:06:15,973 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:06:15,973 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:06:15,973 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:06:15,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:06:15,976 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:06:15,976 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:06:15,976 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-09-18 12:06:23,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:06:23,636 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-09-18 12:06:23,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:06:23,638 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2018-09-18 12:06:23,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:06:23,651 INFO L225 Difference]: With dead ends: 2184 [2018-09-18 12:06:23,651 INFO L226 Difference]: Without dead ends: 1446 [2018-09-18 12:06:23,657 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:06:23,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-09-18 12:06:23,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-09-18 12:06:23,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-09-18 12:06:23,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-09-18 12:06:23,723 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 163 [2018-09-18 12:06:23,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:06:23,724 INFO L480 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-09-18 12:06:23,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:06:23,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-09-18 12:06:23,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-09-18 12:06:23,740 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:06:23,743 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:06:23,743 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:06:23,743 INFO L82 PathProgramCache]: Analyzing trace with hash 277532168, now seen corresponding path program 1 times [2018-09-18 12:06:23,744 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:06:23,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:23,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:23,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:23,745 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:06:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:24,155 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:06:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 126 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:06:24,430 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:06:24,431 INFO L197 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 [2018-09-18 12:06:24,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:24,446 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:06:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:24,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:06:25,102 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-18 12:06:25,102 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:06:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 126 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:06:25,567 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:06:25,567 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 12:06:25,567 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:06:25,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:06:25,569 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:06:25,569 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:06:25,569 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 5 states. [2018-09-18 12:06:32,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:06:32,487 INFO L93 Difference]: Finished difference Result 3750 states and 6054 transitions. [2018-09-18 12:06:32,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:06:32,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 274 [2018-09-18 12:06:32,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:06:32,509 INFO L225 Difference]: With dead ends: 3750 [2018-09-18 12:06:32,510 INFO L226 Difference]: Without dead ends: 2331 [2018-09-18 12:06:32,517 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 543 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-18 12:06:32,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2331 states. [2018-09-18 12:06:32,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2331 to 2308. [2018-09-18 12:06:32,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2308 states. [2018-09-18 12:06:32,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 3578 transitions. [2018-09-18 12:06:32,603 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 3578 transitions. Word has length 274 [2018-09-18 12:06:32,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:06:32,604 INFO L480 AbstractCegarLoop]: Abstraction has 2308 states and 3578 transitions. [2018-09-18 12:06:32,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:06:32,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 3578 transitions. [2018-09-18 12:06:32,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-09-18 12:06:32,615 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:06:32,616 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-18 12:06:32,616 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:06:32,616 INFO L82 PathProgramCache]: Analyzing trace with hash -539125686, now seen corresponding path program 1 times [2018-09-18 12:06:32,617 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:06:32,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:32,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:32,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:32,619 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:06:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:32,882 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 189 proven. 142 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-18 12:06:32,882 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:06:32,882 INFO L197 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 [2018-09-18 12:06:32,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:32,898 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:06:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:32,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:06:33,220 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2018-09-18 12:06:33,221 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:06:33,682 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 189 proven. 142 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-18 12:06:33,717 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:06:33,717 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-18 12:06:33,717 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:06:33,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:06:33,719 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:06:33,719 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:06:33,719 INFO L87 Difference]: Start difference. First operand 2308 states and 3578 transitions. Second operand 5 states. [2018-09-18 12:06:41,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:06:41,045 INFO L93 Difference]: Finished difference Result 8880 states and 14040 transitions. [2018-09-18 12:06:41,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:06:41,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 350 [2018-09-18 12:06:41,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:06:41,088 INFO L225 Difference]: With dead ends: 8880 [2018-09-18 12:06:41,089 INFO L226 Difference]: Without dead ends: 6578 [2018-09-18 12:06:41,108 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 698 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:06:41,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6578 states. [2018-09-18 12:06:41,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6578 to 6499. [2018-09-18 12:06:41,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6499 states. [2018-09-18 12:06:41,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6499 states to 6499 states and 9676 transitions. [2018-09-18 12:06:41,280 INFO L78 Accepts]: Start accepts. Automaton has 6499 states and 9676 transitions. Word has length 350 [2018-09-18 12:06:41,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:06:41,281 INFO L480 AbstractCegarLoop]: Abstraction has 6499 states and 9676 transitions. [2018-09-18 12:06:41,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:06:41,281 INFO L276 IsEmpty]: Start isEmpty. Operand 6499 states and 9676 transitions. [2018-09-18 12:06:41,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-09-18 12:06:41,299 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:06:41,300 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-18 12:06:41,300 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:06:41,300 INFO L82 PathProgramCache]: Analyzing trace with hash 312520066, now seen corresponding path program 1 times [2018-09-18 12:06:41,301 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:06:41,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:41,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:41,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:41,302 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:06:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 189 proven. 150 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-18 12:06:41,686 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:06:41,686 INFO L197 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 [2018-09-18 12:06:41,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:41,695 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:06:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:41,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:06:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2018-09-18 12:06:41,940 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:06:42,207 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 189 proven. 150 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-18 12:06:42,228 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:06:42,228 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 12:06:42,228 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:06:42,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:06:42,229 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:06:42,230 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:06:42,230 INFO L87 Difference]: Start difference. First operand 6499 states and 9676 transitions. Second operand 5 states. [2018-09-18 12:06:48,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:06:48,539 INFO L93 Difference]: Finished difference Result 24642 states and 37943 transitions. [2018-09-18 12:06:48,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:06:48,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 354 [2018-09-18 12:06:48,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:06:48,652 INFO L225 Difference]: With dead ends: 24642 [2018-09-18 12:06:48,652 INFO L226 Difference]: Without dead ends: 18149 [2018-09-18 12:06:48,724 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 703 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-18 12:06:48,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18149 states. [2018-09-18 12:06:49,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18149 to 18012. [2018-09-18 12:06:49,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18012 states. [2018-09-18 12:06:49,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18012 states to 18012 states and 24238 transitions. [2018-09-18 12:06:49,450 INFO L78 Accepts]: Start accepts. Automaton has 18012 states and 24238 transitions. Word has length 354 [2018-09-18 12:06:49,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:06:49,451 INFO L480 AbstractCegarLoop]: Abstraction has 18012 states and 24238 transitions. [2018-09-18 12:06:49,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:06:49,452 INFO L276 IsEmpty]: Start isEmpty. Operand 18012 states and 24238 transitions. [2018-09-18 12:06:49,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-09-18 12:06:49,489 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:06:49,490 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:06:49,490 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:06:49,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1616147312, now seen corresponding path program 1 times [2018-09-18 12:06:49,491 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:06:49,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:49,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:49,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:49,493 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:06:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:50,742 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:06:50,743 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:06:50,743 INFO L197 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 [2018-09-18 12:06:50,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:50,759 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:06:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:50,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:06:51,130 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:06:51,130 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:06:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:06:51,419 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:06:51,419 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:06:51,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:51,436 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:06:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:51,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:06:52,049 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-09-18 12:06:52,049 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:06:52,509 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-09-18 12:06:52,511 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-18 12:06:52,511 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [13, 5, 5] total 24 [2018-09-18 12:06:52,512 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:06:52,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:06:52,513 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:06:52,513 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2018-09-18 12:06:52,513 INFO L87 Difference]: Start difference. First operand 18012 states and 24238 transitions. Second operand 5 states. [2018-09-18 12:06:55,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:06:55,999 INFO L93 Difference]: Finished difference Result 40086 states and 55829 transitions. [2018-09-18 12:06:55,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 12:06:55,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 378 [2018-09-18 12:06:56,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:06:56,095 INFO L225 Difference]: With dead ends: 40086 [2018-09-18 12:06:56,095 INFO L226 Difference]: Without dead ends: 22080 [2018-09-18 12:06:56,152 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1524 GetRequests, 1500 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2018-09-18 12:06:56,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22080 states. [2018-09-18 12:06:56,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22080 to 20820. [2018-09-18 12:06:56,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20820 states. [2018-09-18 12:06:56,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20820 states to 20820 states and 26647 transitions. [2018-09-18 12:06:56,637 INFO L78 Accepts]: Start accepts. Automaton has 20820 states and 26647 transitions. Word has length 378 [2018-09-18 12:06:56,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:06:56,639 INFO L480 AbstractCegarLoop]: Abstraction has 20820 states and 26647 transitions. [2018-09-18 12:06:56,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:06:56,640 INFO L276 IsEmpty]: Start isEmpty. Operand 20820 states and 26647 transitions. [2018-09-18 12:06:56,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2018-09-18 12:06:56,689 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:06:56,689 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-18 12:06:56,690 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:06:56,690 INFO L82 PathProgramCache]: Analyzing trace with hash 616227658, now seen corresponding path program 1 times [2018-09-18 12:06:56,690 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:06:56,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:56,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:56,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:56,691 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:06:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:57,057 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:06:57,849 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 189 proven. 242 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-09-18 12:06:57,849 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:06:57,850 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:06:57,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:57,862 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:06:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:57,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:06:58,436 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 313 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2018-09-18 12:06:58,436 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:06:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 189 proven. 242 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-09-18 12:06:58,760 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:06:58,760 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 12:06:58,760 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:06:58,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:06:58,761 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:06:58,761 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:06:58,762 INFO L87 Difference]: Start difference. First operand 20820 states and 26647 transitions. Second operand 5 states. [2018-09-18 12:07:02,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:07:02,347 INFO L93 Difference]: Finished difference Result 43083 states and 56003 transitions. [2018-09-18 12:07:02,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 12:07:02,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 538 [2018-09-18 12:07:02,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:07:02,444 INFO L225 Difference]: With dead ends: 43083 [2018-09-18 12:07:02,445 INFO L226 Difference]: Without dead ends: 22269 [2018-09-18 12:07:02,512 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1083 GetRequests, 1070 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:07:02,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22269 states. [2018-09-18 12:07:03,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22269 to 22135. [2018-09-18 12:07:03,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22135 states. [2018-09-18 12:07:03,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22135 states to 22135 states and 26609 transitions. [2018-09-18 12:07:03,162 INFO L78 Accepts]: Start accepts. Automaton has 22135 states and 26609 transitions. Word has length 538 [2018-09-18 12:07:03,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:07:03,163 INFO L480 AbstractCegarLoop]: Abstraction has 22135 states and 26609 transitions. [2018-09-18 12:07:03,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:07:03,163 INFO L276 IsEmpty]: Start isEmpty. Operand 22135 states and 26609 transitions. [2018-09-18 12:07:03,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2018-09-18 12:07:03,219 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:07:03,219 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:07:03,220 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:07:03,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1352475642, now seen corresponding path program 1 times [2018-09-18 12:07:03,220 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:07:03,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:03,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:03,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:03,221 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:07:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 308 proven. 115 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-09-18 12:07:04,113 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:07:04,113 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:07:04,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:04,128 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:07:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:04,297 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:07:04,962 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 571 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-18 12:07:04,962 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:07:05,159 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 12:07:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 308 proven. 115 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-09-18 12:07:05,876 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:07:05,877 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:07:05,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:05,893 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:07:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:06,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:07:06,521 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 571 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-18 12:07:06,522 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:07:06,889 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 308 proven. 115 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-09-18 12:07:06,892 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:07:06,893 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 12:07:06,893 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:07:06,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:07:06,895 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:07:06,895 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:07:06,896 INFO L87 Difference]: Start difference. First operand 22135 states and 26609 transitions. Second operand 9 states. [2018-09-18 12:07:15,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:07:15,313 INFO L93 Difference]: Finished difference Result 63055 states and 85294 transitions. [2018-09-18 12:07:15,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-18 12:07:15,314 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 652 [2018-09-18 12:07:15,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:07:15,568 INFO L225 Difference]: With dead ends: 63055 [2018-09-18 12:07:15,568 INFO L226 Difference]: Without dead ends: 40926 [2018-09-18 12:07:15,793 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2628 GetRequests, 2604 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2018-09-18 12:07:15,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40926 states. [2018-09-18 12:07:16,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40926 to 40784. [2018-09-18 12:07:16,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40784 states. [2018-09-18 12:07:16,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40784 states to 40784 states and 51625 transitions. [2018-09-18 12:07:16,818 INFO L78 Accepts]: Start accepts. Automaton has 40784 states and 51625 transitions. Word has length 652 [2018-09-18 12:07:16,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:07:16,819 INFO L480 AbstractCegarLoop]: Abstraction has 40784 states and 51625 transitions. [2018-09-18 12:07:16,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:07:16,819 INFO L276 IsEmpty]: Start isEmpty. Operand 40784 states and 51625 transitions. [2018-09-18 12:07:16,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2018-09-18 12:07:16,873 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:07:16,874 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:07:16,874 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:07:16,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1020643226, now seen corresponding path program 1 times [2018-09-18 12:07:16,875 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:07:16,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:16,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:16,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:16,876 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:07:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:17,438 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:07:18,520 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 522 proven. 268 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-18 12:07:18,520 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:07:18,520 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:07:18,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:18,531 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:07:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:18,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:07:19,046 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2018-09-18 12:07:19,046 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:07:19,296 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2018-09-18 12:07:19,320 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 12:07:19,320 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-09-18 12:07:19,320 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:07:19,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:07:19,321 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:07:19,321 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:07:19,322 INFO L87 Difference]: Start difference. First operand 40784 states and 51625 transitions. Second operand 3 states. [2018-09-18 12:07:23,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:07:23,647 INFO L93 Difference]: Finished difference Result 78292 states and 100277 transitions. [2018-09-18 12:07:23,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:07:23,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 732 [2018-09-18 12:07:23,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:07:23,819 INFO L225 Difference]: With dead ends: 78292 [2018-09-18 12:07:23,820 INFO L226 Difference]: Without dead ends: 37514 [2018-09-18 12:07:24,072 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1476 GetRequests, 1465 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:07:24,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37514 states. [2018-09-18 12:07:24,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37514 to 37488. [2018-09-18 12:07:24,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37488 states. [2018-09-18 12:07:24,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37488 states to 37488 states and 46136 transitions. [2018-09-18 12:07:24,909 INFO L78 Accepts]: Start accepts. Automaton has 37488 states and 46136 transitions. Word has length 732 [2018-09-18 12:07:24,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:07:24,911 INFO L480 AbstractCegarLoop]: Abstraction has 37488 states and 46136 transitions. [2018-09-18 12:07:24,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:07:24,911 INFO L276 IsEmpty]: Start isEmpty. Operand 37488 states and 46136 transitions. [2018-09-18 12:07:25,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1070 [2018-09-18 12:07:25,072 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:07:25,073 INFO L376 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:07:25,073 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:07:25,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1846201540, now seen corresponding path program 1 times [2018-09-18 12:07:25,074 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:07:25,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:25,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:25,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:25,075 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:07:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:26,152 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-18 12:07:26,481 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-09-18 12:07:26,946 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-09-18 12:07:27,398 WARN L178 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-09-18 12:07:29,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1522 backedges. 675 proven. 215 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2018-09-18 12:07:29,345 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:07:29,345 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:07:29,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:29,354 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:07:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:29,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:07:30,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1522 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-18 12:07:30,337 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:07:31,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1522 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-18 12:07:31,082 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 12:07:31,083 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [12] total 13 [2018-09-18 12:07:31,083 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:07:31,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:07:31,084 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:07:31,084 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:07:31,085 INFO L87 Difference]: Start difference. First operand 37488 states and 46136 transitions. Second operand 3 states. [2018-09-18 12:07:33,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:07:33,526 INFO L93 Difference]: Finished difference Result 74965 states and 92184 transitions. [2018-09-18 12:07:33,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:07:33,528 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1069 [2018-09-18 12:07:33,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:07:33,702 INFO L225 Difference]: With dead ends: 74965 [2018-09-18 12:07:33,703 INFO L226 Difference]: Without dead ends: 37483 [2018-09-18 12:07:33,968 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2149 GetRequests, 2136 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:07:34,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37483 states. [2018-09-18 12:07:34,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37483 to 37483. [2018-09-18 12:07:34,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37483 states. [2018-09-18 12:07:34,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37483 states to 37483 states and 43997 transitions. [2018-09-18 12:07:34,754 INFO L78 Accepts]: Start accepts. Automaton has 37483 states and 43997 transitions. Word has length 1069 [2018-09-18 12:07:34,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:07:34,757 INFO L480 AbstractCegarLoop]: Abstraction has 37483 states and 43997 transitions. [2018-09-18 12:07:34,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:07:34,757 INFO L276 IsEmpty]: Start isEmpty. Operand 37483 states and 43997 transitions. [2018-09-18 12:07:34,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1079 [2018-09-18 12:07:34,864 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:07:34,865 INFO L376 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:07:34,866 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:07:34,866 INFO L82 PathProgramCache]: Analyzing trace with hash 53481222, now seen corresponding path program 1 times [2018-09-18 12:07:34,866 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:07:34,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:34,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:34,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:34,868 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:07:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:35,859 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-18 12:07:36,176 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-09-18 12:07:38,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1957 backedges. 748 proven. 305 refuted. 0 times theorem prover too weak. 904 trivial. 0 not checked. [2018-09-18 12:07:38,191 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:07:38,191 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:07:38,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:38,199 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:07:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:38,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:07:39,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1957 backedges. 694 proven. 2 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-18 12:07:39,363 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:07:40,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1957 backedges. 694 proven. 2 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-18 12:07:40,234 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:07:40,234 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:07:40,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:40,250 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:07:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:40,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:07:41,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1957 backedges. 694 proven. 2 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-18 12:07:41,894 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:07:42,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1957 backedges. 694 proven. 2 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-18 12:07:42,702 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:07:42,702 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 5, 5] total 21 [2018-09-18 12:07:42,703 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:07:42,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-18 12:07:42,705 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-18 12:07:42,705 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2018-09-18 12:07:42,705 INFO L87 Difference]: Start difference. First operand 37483 states and 43997 transitions. Second operand 15 states. [2018-09-18 12:07:49,256 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 28 [2018-09-18 12:07:54,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:07:54,556 INFO L93 Difference]: Finished difference Result 77928 states and 91279 transitions. [2018-09-18 12:07:54,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-18 12:07:54,557 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 1078 [2018-09-18 12:07:54,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:07:54,692 INFO L225 Difference]: With dead ends: 77928 [2018-09-18 12:07:54,692 INFO L226 Difference]: Without dead ends: 40451 [2018-09-18 12:07:54,795 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4393 GetRequests, 4333 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=823, Invalid=2717, Unknown=0, NotChecked=0, Total=3540 [2018-09-18 12:07:54,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40451 states. [2018-09-18 12:07:55,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40451 to 39849. [2018-09-18 12:07:55,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39849 states. [2018-09-18 12:07:55,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39849 states to 39849 states and 45423 transitions. [2018-09-18 12:07:55,476 INFO L78 Accepts]: Start accepts. Automaton has 39849 states and 45423 transitions. Word has length 1078 [2018-09-18 12:07:55,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:07:55,477 INFO L480 AbstractCegarLoop]: Abstraction has 39849 states and 45423 transitions. [2018-09-18 12:07:55,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-18 12:07:55,477 INFO L276 IsEmpty]: Start isEmpty. Operand 39849 states and 45423 transitions. [2018-09-18 12:07:55,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1265 [2018-09-18 12:07:55,540 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:07:55,541 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:07:55,541 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:07:55,542 INFO L82 PathProgramCache]: Analyzing trace with hash 765523122, now seen corresponding path program 1 times [2018-09-18 12:07:55,542 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:07:55,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:55,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:55,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:55,543 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:07:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3092 backedges. 698 proven. 518 refuted. 0 times theorem prover too weak. 1876 trivial. 0 not checked. [2018-09-18 12:07:56,896 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:07:56,897 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:07:56,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:56,905 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:07:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:57,219 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:07:57,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3092 backedges. 1939 proven. 2 refuted. 0 times theorem prover too weak. 1151 trivial. 0 not checked. [2018-09-18 12:07:57,998 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:07:58,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3092 backedges. 698 proven. 518 refuted. 0 times theorem prover too weak. 1876 trivial. 0 not checked. [2018-09-18 12:07:58,753 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:07:58,753 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:07:58,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:58,769 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:07:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:59,480 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:08:00,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3092 backedges. 1939 proven. 2 refuted. 0 times theorem prover too weak. 1151 trivial. 0 not checked. [2018-09-18 12:08:00,112 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:08:00,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3092 backedges. 698 proven. 518 refuted. 0 times theorem prover too weak. 1876 trivial. 0 not checked. [2018-09-18 12:08:00,862 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:08:00,863 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 12:08:00,863 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:08:00,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:08:00,866 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:08:00,866 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:08:00,866 INFO L87 Difference]: Start difference. First operand 39849 states and 45423 transitions. Second operand 9 states. [2018-09-18 12:08:07,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:08:07,990 INFO L93 Difference]: Finished difference Result 80196 states and 96192 transitions. [2018-09-18 12:08:07,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-18 12:08:07,991 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1264 [2018-09-18 12:08:07,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:08:08,122 INFO L225 Difference]: With dead ends: 80196 [2018-09-18 12:08:08,122 INFO L226 Difference]: Without dead ends: 40739 [2018-09-18 12:08:08,191 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5078 GetRequests, 5053 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-09-18 12:08:08,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40739 states. [2018-09-18 12:08:08,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40739 to 39754. [2018-09-18 12:08:08,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39754 states. [2018-09-18 12:08:08,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39754 states to 39754 states and 44325 transitions. [2018-09-18 12:08:08,818 INFO L78 Accepts]: Start accepts. Automaton has 39754 states and 44325 transitions. Word has length 1264 [2018-09-18 12:08:08,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:08:08,819 INFO L480 AbstractCegarLoop]: Abstraction has 39754 states and 44325 transitions. [2018-09-18 12:08:08,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:08:08,819 INFO L276 IsEmpty]: Start isEmpty. Operand 39754 states and 44325 transitions. [2018-09-18 12:08:08,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1290 [2018-09-18 12:08:08,891 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:08:08,891 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:08:08,892 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:08:08,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1571788819, now seen corresponding path program 1 times [2018-09-18 12:08:08,892 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:08:08,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:08:08,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:08:08,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:08:08,894 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:08:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:08:10,574 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2018-09-18 12:08:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3239 backedges. 2453 proven. 443 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-09-18 12:08:14,583 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:08:14,583 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:08:14,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:08:14,591 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:08:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:08:14,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:08:15,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3239 backedges. 1023 proven. 0 refuted. 0 times theorem prover too weak. 2216 trivial. 0 not checked. [2018-09-18 12:08:15,783 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:08:17,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3239 backedges. 441 proven. 936 refuted. 0 times theorem prover too weak. 1862 trivial. 0 not checked. [2018-09-18 12:08:17,728 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:08:17,729 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [22, 5] total 27 [2018-09-18 12:08:17,729 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:08:17,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:08:17,730 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:08:17,730 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2018-09-18 12:08:17,730 INFO L87 Difference]: Start difference. First operand 39754 states and 44325 transitions. Second operand 5 states. [2018-09-18 12:08:24,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:08:24,340 INFO L93 Difference]: Finished difference Result 86276 states and 96510 transitions. [2018-09-18 12:08:24,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:08:24,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1289 [2018-09-18 12:08:24,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:08:24,442 INFO L225 Difference]: With dead ends: 86276 [2018-09-18 12:08:24,442 INFO L226 Difference]: Without dead ends: 46533 [2018-09-18 12:08:24,498 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2605 GetRequests, 2576 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2018-09-18 12:08:24,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46533 states. [2018-09-18 12:08:25,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46533 to 44090. [2018-09-18 12:08:25,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44090 states. [2018-09-18 12:08:25,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44090 states to 44090 states and 48758 transitions. [2018-09-18 12:08:25,127 INFO L78 Accepts]: Start accepts. Automaton has 44090 states and 48758 transitions. Word has length 1289 [2018-09-18 12:08:25,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:08:25,128 INFO L480 AbstractCegarLoop]: Abstraction has 44090 states and 48758 transitions. [2018-09-18 12:08:25,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:08:25,128 INFO L276 IsEmpty]: Start isEmpty. Operand 44090 states and 48758 transitions. [2018-09-18 12:08:25,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1382 [2018-09-18 12:08:25,230 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:08:25,231 INFO L376 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:08:25,231 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:08:25,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1622291791, now seen corresponding path program 1 times [2018-09-18 12:08:25,232 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:08:25,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:08:25,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:08:25,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:08:25,233 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:08:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:08:28,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 624 proven. 950 refuted. 0 times theorem prover too weak. 2372 trivial. 0 not checked. [2018-09-18 12:08:28,552 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:08:28,553 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:08:28,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:08:28,562 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:08:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:08:28,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:08:30,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 2796 proven. 2 refuted. 0 times theorem prover too weak. 1148 trivial. 0 not checked. [2018-09-18 12:08:30,015 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:08:30,453 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-09-18 12:08:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 1120 proven. 468 refuted. 0 times theorem prover too weak. 2358 trivial. 0 not checked. [2018-09-18 12:08:33,141 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:08:33,141 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:08:33,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:08:33,165 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:08:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:08:33,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:08:38,048 WARN L178 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 47 DAG size of output: 20 [2018-09-18 12:08:41,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 525 proven. 0 refuted. 0 times theorem prover too weak. 3421 trivial. 0 not checked. [2018-09-18 12:08:41,232 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:08:42,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 525 proven. 0 refuted. 0 times theorem prover too weak. 3421 trivial. 0 not checked. [2018-09-18 12:08:42,046 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-18 12:08:42,047 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [13, 5, 5] total 21 [2018-09-18 12:08:42,047 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:08:42,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:08:42,048 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:08:42,048 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=352, Unknown=1, NotChecked=0, Total=420 [2018-09-18 12:08:42,048 INFO L87 Difference]: Start difference. First operand 44090 states and 48758 transitions. Second operand 4 states. Received shutdown request... [2018-09-18 12:09:59,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:09:59,558 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 12:09:59,563 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 12:09:59,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:09:59 BoogieIcfgContainer [2018-09-18 12:09:59,563 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 12:09:59,564 INFO L168 Benchmark]: Toolchain (without parser) took 237679.78 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-09-18 12:09:59,565 INFO L168 Benchmark]: CDTParser took 0.29 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. [2018-09-18 12:09:59,566 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1178.98 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-09-18 12:09:59,567 INFO L168 Benchmark]: Boogie Procedure Inliner took 227.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-18 12:09:59,567 INFO L168 Benchmark]: Boogie Preprocessor took 526.90 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 823.1 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -968.4 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2018-09-18 12:09:59,568 INFO L168 Benchmark]: RCFGBuilder took 6079.77 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 252.9 MB). Peak memory consumption was 252.9 MB. Max. memory is 7.1 GB. [2018-09-18 12:09:59,569 INFO L168 Benchmark]: TraceAbstraction took 229659.00 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -846.3 MB). Peak memory consumption was 817.8 MB. Max. memory is 7.1 GB. [2018-09-18 12:09:59,576 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 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 1178.98 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 227.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 526.90 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 823.1 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -968.4 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6079.77 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 252.9 MB). Peak memory consumption was 252.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229659.00 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -846.3 MB). Peak memory consumption was 817.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 196). Cancelled while BasicCegarLoop was constructing difference of abstraction (44090states) and FLOYD_HOARE automaton (currently 3 states, 4 states before enhancement), while ReachableStatesComputation was computing reachable states (974 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 229.5s OverallTime, 14 OverallIterations, 9 TraceHistogramMax, 160.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2584 SDtfs, 19057 SDslu, 2042 SDs, 0 SdLazy, 41562 SolverSat, 9688 SolverUnsat, 34 SolverUnknown, 0 SolverNotchecked, 139.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28469 GetRequests, 28200 SyntacticMatches, 36 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1824 ImplicationChecksByTransitivity, 20.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44090occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.9s AutomataMinimizationTime, 13 MinimizatonAttempts, 5852 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.0s SsaConstructionTime, 5.1s SatisfiabilityAnalysisTime, 41.4s InterpolantComputationTime, 23704 NumberOfCodeBlocks, 23704 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 37768 ConstructedInterpolants, 66 QuantifiedInterpolants, 119183640 SizeOfPredicates, 20 NumberOfNonLiveVariables, 18938 ConjunctsInSsa, 113 ConjunctsInUnsatCore, 48 InterpolantComputations, 15 PerfectInterpolantSequences, 64191/70943 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem16_label40_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_12-09-59-591.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem16_label40_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_12-09-59-591.csv Completed graceful shutdown