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/Problem17_label47_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 18:07:08,904 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 18:07:08,907 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 18:07:08,919 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 18:07:08,919 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 18:07:08,920 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 18:07:08,922 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 18:07:08,924 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 18:07:08,926 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 18:07:08,927 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 18:07:08,931 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 18:07:08,932 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 18:07:08,935 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 18:07:08,936 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 18:07:08,941 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 18:07:08,945 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 18:07:08,946 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 18:07:08,947 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 18:07:08,949 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 18:07:08,952 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 18:07:08,955 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 18:07:08,957 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 18:07:08,963 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 18:07:08,963 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 18:07:08,964 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 18:07:08,964 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 18:07:08,965 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 18:07:08,966 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 18:07:08,967 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 18:07:08,968 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 18:07:08,969 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 18:07:08,969 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 18:07:08,969 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 18:07:08,970 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 18:07:08,971 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 18:07:08,972 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 18:07:08,972 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 [2018-09-14 18:07:08,993 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 18:07:08,993 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 18:07:08,994 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 18:07:08,994 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 18:07:08,994 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 18:07:08,994 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 18:07:08,995 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 18:07:08,995 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 18:07:08,995 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 18:07:08,995 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 18:07:08,995 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 18:07:08,996 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 18:07:08,996 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 18:07:08,997 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 18:07:08,997 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 18:07:08,997 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 18:07:08,997 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 18:07:08,997 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 18:07:08,997 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 18:07:08,998 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 18:07:08,998 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 18:07:08,998 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 18:07:08,998 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 18:07:08,998 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:07:08,999 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 18:07:08,999 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 18:07:08,999 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 18:07:08,999 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 18:07:09,000 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 18:07:09,000 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 18:07:09,000 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 18:07:09,000 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 18:07:09,000 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 18:07:09,046 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 18:07:09,062 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 18:07:09,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 18:07:09,069 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 18:07:09,069 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 18:07:09,070 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label47_true-unreach-call.c [2018-09-14 18:07:09,463 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a995dfd/4e6fd2f6cf464cf5bab5f0dae4f01d76/FLAG708764693 [2018-09-14 18:07:09,878 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 18:07:09,879 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label47_true-unreach-call.c [2018-09-14 18:07:09,909 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a995dfd/4e6fd2f6cf464cf5bab5f0dae4f01d76/FLAG708764693 [2018-09-14 18:07:09,931 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a995dfd/4e6fd2f6cf464cf5bab5f0dae4f01d76 [2018-09-14 18:07:09,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 18:07:09,948 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 18:07:09,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 18:07:09,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 18:07:09,956 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 18:07:09,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:07:09" (1/1) ... [2018-09-14 18:07:09,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46518c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:07:09, skipping insertion in model container [2018-09-14 18:07:09,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:07:09" (1/1) ... [2018-09-14 18:07:09,973 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 18:07:10,976 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:07:10,998 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 18:07:11,674 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:07:11,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:07:11 WrapperNode [2018-09-14 18:07:11,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 18:07:11,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 18:07:11,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 18:07:11,919 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 18:07:11,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:07:11" (1/1) ... [2018-09-14 18:07:12,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:07:11" (1/1) ... [2018-09-14 18:07:12,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 18:07:12,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 18:07:12,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 18:07:12,214 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 18:07:12,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:07:11" (1/1) ... [2018-09-14 18:07:12,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:07:11" (1/1) ... [2018-09-14 18:07:12,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:07:11" (1/1) ... [2018-09-14 18:07:12,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:07:11" (1/1) ... [2018-09-14 18:07:12,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:07:11" (1/1) ... [2018-09-14 18:07:13,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:07:11" (1/1) ... [2018-09-14 18:07:13,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:07:11" (1/1) ... [2018-09-14 18:07:13,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 18:07:13,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 18:07:13,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 18:07:13,187 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 18:07:13,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:07:11" (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 [2018-09-14 18:07:13,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 18:07:13,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 18:07:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 18:07:13,264 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 18:07:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 18:07:13,265 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 18:07:13,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 18:07:13,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 18:07:13,265 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 18:07:13,265 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 18:07:24,959 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 18:07:24,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:07:24 BoogieIcfgContainer [2018-09-14 18:07:24,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 18:07:24,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 18:07:24,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 18:07:24,966 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 18:07:24,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 06:07:09" (1/3) ... [2018-09-14 18:07:24,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64260840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:07:24, skipping insertion in model container [2018-09-14 18:07:24,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:07:11" (2/3) ... [2018-09-14 18:07:24,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64260840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:07:24, skipping insertion in model container [2018-09-14 18:07:24,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:07:24" (3/3) ... [2018-09-14 18:07:24,970 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label47_true-unreach-call.c [2018-09-14 18:07:24,980 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 18:07:24,989 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 18:07:25,047 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 18:07:25,048 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 18:07:25,048 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 18:07:25,048 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 18:07:25,048 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 18:07:25,049 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 18:07:25,049 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 18:07:25,049 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 18:07:25,049 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 18:07:25,085 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-14 18:07:25,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-14 18:07:25,094 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:07:25,095 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] [2018-09-14 18:07:25,096 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:07:25,102 INFO L82 PathProgramCache]: Analyzing trace with hash -572495578, now seen corresponding path program 1 times [2018-09-14 18:07:25,104 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:07:25,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:07:25,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:07:25,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:07:25,156 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:07:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:07:25,684 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-09-14 18:07:25,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:07:25,699 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:07:25,700 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:07:25,700 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:07:25,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:07:25,721 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:07:25,721 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:07:25,724 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-14 18:07:37,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:07:37,364 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-09-14 18:07:37,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:07:37,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-09-14 18:07:37,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:07:37,410 INFO L225 Difference]: With dead ends: 2164 [2018-09-14 18:07:37,411 INFO L226 Difference]: Without dead ends: 1554 [2018-09-14 18:07:37,421 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:07:37,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-09-14 18:07:37,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-09-14 18:07:37,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-09-14 18:07:37,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-09-14 18:07:37,583 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 51 [2018-09-14 18:07:37,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:07:37,584 INFO L480 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-09-14 18:07:37,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:07:37,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-09-14 18:07:37,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-09-14 18:07:37,591 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:07:37,591 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:07:37,592 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:07:37,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1304014569, now seen corresponding path program 1 times [2018-09-14 18:07:37,592 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:07:37,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:07:37,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:07:37,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:07:37,594 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:07:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:07:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:07:37,984 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:07:37,984 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 18:07:37,984 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:07:37,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:07:37,986 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:07:37,986 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:07:37,987 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-09-14 18:07:50,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:07:50,711 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-09-14 18:07:50,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:07:50,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2018-09-14 18:07:50,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:07:50,728 INFO L225 Difference]: With dead ends: 3031 [2018-09-14 18:07:50,728 INFO L226 Difference]: Without dead ends: 1985 [2018-09-14 18:07:50,732 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:07:50,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-09-14 18:07:50,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-09-14 18:07:50,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-09-14 18:07:50,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-09-14 18:07:50,808 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 123 [2018-09-14 18:07:50,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:07:50,808 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-09-14 18:07:50,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:07:50,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-09-14 18:07:50,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-14 18:07:50,813 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:07:50,816 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:07:50,817 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:07:50,817 INFO L82 PathProgramCache]: Analyzing trace with hash 2080151345, now seen corresponding path program 1 times [2018-09-14 18:07:50,817 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:07:50,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:07:50,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:07:50,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:07:50,819 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:07:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:07:51,358 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-09-14 18:07:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:07:51,567 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:07:51,567 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 [2018-09-14 18:07:51,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:07:51,584 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:07:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:07:51,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:07:52,665 WARN L178 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-09-14 18:07:52,832 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:07:52,832 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:07:55,557 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-09-14 18:07:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:07:56,042 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:07:56,042 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-09-14 18:07:56,042 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:07:56,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:07:56,043 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:07:56,044 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=109, Unknown=1, NotChecked=0, Total=156 [2018-09-14 18:07:56,044 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 6 states. [2018-09-14 18:08:24,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:08:24,262 INFO L93 Difference]: Finished difference Result 7516 states and 12899 transitions. [2018-09-14 18:08:24,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 18:08:24,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-09-14 18:08:24,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:08:24,298 INFO L225 Difference]: With dead ends: 7516 [2018-09-14 18:08:24,299 INFO L226 Difference]: Without dead ends: 5563 [2018-09-14 18:08:24,313 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 247 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=46, Invalid=109, Unknown=1, NotChecked=0, Total=156 [2018-09-14 18:08:24,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5563 states. [2018-09-14 18:08:24,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5563 to 5551. [2018-09-14 18:08:24,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5551 states. [2018-09-14 18:08:24,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5551 states to 5551 states and 9342 transitions. [2018-09-14 18:08:24,486 INFO L78 Accepts]: Start accepts. Automaton has 5551 states and 9342 transitions. Word has length 126 [2018-09-14 18:08:24,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:08:24,486 INFO L480 AbstractCegarLoop]: Abstraction has 5551 states and 9342 transitions. [2018-09-14 18:08:24,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:08:24,487 INFO L276 IsEmpty]: Start isEmpty. Operand 5551 states and 9342 transitions. [2018-09-14 18:08:24,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-09-14 18:08:24,490 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:08:24,491 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:08:24,491 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:08:24,491 INFO L82 PathProgramCache]: Analyzing trace with hash 486218423, now seen corresponding path program 1 times [2018-09-14 18:08:24,491 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:08:24,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:08:24,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:08:24,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:08:24,493 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:08:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:08:24,730 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:08:24,845 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:08:24,845 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:08:24,845 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 [2018-09-14 18:08:24,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:08:24,854 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:08:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:08:24,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:08:24,965 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:08:24,966 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:08:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:08:25,145 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:08:25,146 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-14 18:08:25,146 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:08:25,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:08:25,147 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:08:25,147 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:08:25,147 INFO L87 Difference]: Start difference. First operand 5551 states and 9342 transitions. Second operand 3 states. [2018-09-14 18:08:29,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:08:29,275 INFO L93 Difference]: Finished difference Result 13723 states and 22982 transitions. [2018-09-14 18:08:29,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:08:29,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2018-09-14 18:08:29,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:08:29,318 INFO L225 Difference]: With dead ends: 13723 [2018-09-14 18:08:29,318 INFO L226 Difference]: Without dead ends: 8178 [2018-09-14 18:08:29,351 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 277 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:08:29,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8178 states. [2018-09-14 18:08:29,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8178 to 8177. [2018-09-14 18:08:29,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8177 states. [2018-09-14 18:08:29,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8177 states to 8177 states and 12791 transitions. [2018-09-14 18:08:29,578 INFO L78 Accepts]: Start accepts. Automaton has 8177 states and 12791 transitions. Word has length 139 [2018-09-14 18:08:29,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:08:29,579 INFO L480 AbstractCegarLoop]: Abstraction has 8177 states and 12791 transitions. [2018-09-14 18:08:29,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:08:29,579 INFO L276 IsEmpty]: Start isEmpty. Operand 8177 states and 12791 transitions. [2018-09-14 18:08:29,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-09-14 18:08:29,588 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:08:29,591 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:08:29,591 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:08:29,592 INFO L82 PathProgramCache]: Analyzing trace with hash 661531126, now seen corresponding path program 1 times [2018-09-14 18:08:29,592 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:08:29,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:08:29,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:08:29,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:08:29,593 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:08:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:08:29,914 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:08:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 89 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 18:08:30,357 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:08:30,357 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 [2018-09-14 18:08:30,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:08:30,373 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:08:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:08:30,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:08:30,893 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:08:30,893 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:08:31,133 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2018-09-14 18:08:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:08:31,680 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:08:31,681 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 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:08:31,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:08:31,697 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:08:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:08:31,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:08:32,069 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 18:08:32,070 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:08:32,339 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 18:08:32,341 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-14 18:08:32,341 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-09-14 18:08:32,341 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:08:32,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:08:32,344 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:08:32,344 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:08:32,344 INFO L87 Difference]: Start difference. First operand 8177 states and 12791 transitions. Second operand 5 states. [2018-09-14 18:08:38,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:08:38,698 INFO L93 Difference]: Finished difference Result 16409 states and 25731 transitions. [2018-09-14 18:08:38,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 18:08:38,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2018-09-14 18:08:38,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:08:38,742 INFO L225 Difference]: With dead ends: 16409 [2018-09-14 18:08:38,743 INFO L226 Difference]: Without dead ends: 8238 [2018-09-14 18:08:38,771 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 904 GetRequests, 886 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-14 18:08:38,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8238 states. [2018-09-14 18:08:38,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8238 to 8236. [2018-09-14 18:08:38,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8236 states. [2018-09-14 18:08:38,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8236 states to 8236 states and 10730 transitions. [2018-09-14 18:08:38,950 INFO L78 Accepts]: Start accepts. Automaton has 8236 states and 10730 transitions. Word has length 224 [2018-09-14 18:08:38,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:08:38,950 INFO L480 AbstractCegarLoop]: Abstraction has 8236 states and 10730 transitions. [2018-09-14 18:08:38,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:08:38,954 INFO L276 IsEmpty]: Start isEmpty. Operand 8236 states and 10730 transitions. [2018-09-14 18:08:38,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-09-14 18:08:38,963 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:08:38,964 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:08:38,964 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:08:38,965 INFO L82 PathProgramCache]: Analyzing trace with hash -478946251, now seen corresponding path program 1 times [2018-09-14 18:08:38,965 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:08:38,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:08:38,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:08:38,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:08:38,966 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:08:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:08:39,598 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-14 18:08:39,828 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 89 proven. 85 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-14 18:08:39,828 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:08:39,828 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:08:39,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:08:39,837 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:08:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:08:39,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:08:40,629 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-14 18:08:40,629 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:08:41,386 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-14 18:08:41,517 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-14 18:08:42,385 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2018-09-14 18:08:47,063 WARN L178 SmtUtils]: Spent 4.21 s on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2018-09-14 18:08:47,836 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 93 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:08:47,858 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:08:47,858 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 21 [2018-09-14 18:08:47,859 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:08:47,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 18:08:47,859 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 18:08:47,860 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2018-09-14 18:08:47,860 INFO L87 Difference]: Start difference. First operand 8236 states and 10730 transitions. Second operand 7 states. [2018-09-14 18:09:05,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:09:05,307 INFO L93 Difference]: Finished difference Result 27329 states and 36410 transitions. [2018-09-14 18:09:05,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 18:09:05,308 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 305 [2018-09-14 18:09:05,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:09:05,380 INFO L225 Difference]: With dead ends: 27329 [2018-09-14 18:09:05,381 INFO L226 Difference]: Without dead ends: 19099 [2018-09-14 18:09:05,409 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 599 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2018-09-14 18:09:05,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19099 states. [2018-09-14 18:09:05,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19099 to 15475. [2018-09-14 18:09:05,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15475 states. [2018-09-14 18:09:05,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15475 states to 15475 states and 19816 transitions. [2018-09-14 18:09:05,776 INFO L78 Accepts]: Start accepts. Automaton has 15475 states and 19816 transitions. Word has length 305 [2018-09-14 18:09:05,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:09:05,777 INFO L480 AbstractCegarLoop]: Abstraction has 15475 states and 19816 transitions. [2018-09-14 18:09:05,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 18:09:05,777 INFO L276 IsEmpty]: Start isEmpty. Operand 15475 states and 19816 transitions. [2018-09-14 18:09:05,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-09-14 18:09:05,798 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:09:05,799 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:09:05,799 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:09:05,799 INFO L82 PathProgramCache]: Analyzing trace with hash -620484572, now seen corresponding path program 1 times [2018-09-14 18:09:05,799 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:09:05,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:09:05,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:09:05,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:09:05,801 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:09:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:09:06,481 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-14 18:09:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 138 proven. 240 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-09-14 18:09:06,658 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:09:06,659 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 [2018-09-14 18:09:06,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:09:06,668 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:09:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:09:06,965 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:09:07,686 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 21 [2018-09-14 18:09:08,265 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 283 proven. 55 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-09-14 18:09:08,265 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:09:09,796 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 142 proven. 264 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:09:09,818 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:09:09,818 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 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:09:09,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:09:09,835 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:09:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:09:10,114 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:09:10,291 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 279 proven. 87 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-14 18:09:10,292 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:09:10,937 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 142 proven. 264 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:09:10,944 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:09:10,945 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9, 8, 8] total 24 [2018-09-14 18:09:10,945 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:09:10,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-14 18:09:10,947 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-14 18:09:10,947 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2018-09-14 18:09:10,947 INFO L87 Difference]: Start difference. First operand 15475 states and 19816 transitions. Second operand 13 states. [2018-09-14 18:09:56,312 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 12 [2018-09-14 18:09:59,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:09:59,199 INFO L93 Difference]: Finished difference Result 82374 states and 125846 transitions. [2018-09-14 18:09:59,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-14 18:09:59,199 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 408 [2018-09-14 18:09:59,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:09:59,794 INFO L225 Difference]: With dead ends: 82374 [2018-09-14 18:09:59,794 INFO L226 Difference]: Without dead ends: 66905 [2018-09-14 18:10:00,074 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1740 GetRequests, 1654 SyntacticMatches, 7 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 1903 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1413, Invalid=5067, Unknown=0, NotChecked=0, Total=6480 [2018-09-14 18:10:00,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66905 states. [2018-09-14 18:10:02,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66905 to 60890. [2018-09-14 18:10:02,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60890 states. [2018-09-14 18:10:03,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60890 states to 60890 states and 86040 transitions. [2018-09-14 18:10:03,099 INFO L78 Accepts]: Start accepts. Automaton has 60890 states and 86040 transitions. Word has length 408 [2018-09-14 18:10:03,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:10:03,100 INFO L480 AbstractCegarLoop]: Abstraction has 60890 states and 86040 transitions. [2018-09-14 18:10:03,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-14 18:10:03,101 INFO L276 IsEmpty]: Start isEmpty. Operand 60890 states and 86040 transitions. [2018-09-14 18:10:03,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-09-14 18:10:03,158 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:10:03,159 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:10:03,159 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:10:03,159 INFO L82 PathProgramCache]: Analyzing trace with hash 628644913, now seen corresponding path program 1 times [2018-09-14 18:10:03,160 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:10:03,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:10:03,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:03,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:10:03,161 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:10:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:10:03,728 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 140 proven. 188 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-14 18:10:03,729 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:10:03,729 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:10:03,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:03,737 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:10:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:10:03,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:10:04,027 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-09-14 18:10:04,027 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:10:04,250 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2018-09-14 18:10:04,623 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 132 proven. 184 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-14 18:10:04,645 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:10:04,646 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-09-14 18:10:04,646 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:10:04,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:10:04,646 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:10:04,647 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:10:04,647 INFO L87 Difference]: Start difference. First operand 60890 states and 86040 transitions. Second operand 5 states. [2018-09-14 18:10:14,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:10:14,723 INFO L93 Difference]: Finished difference Result 128281 states and 177899 transitions. [2018-09-14 18:10:14,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:10:14,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 411 [2018-09-14 18:10:14,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:10:15,055 INFO L225 Difference]: With dead ends: 128281 [2018-09-14 18:10:15,056 INFO L226 Difference]: Without dead ends: 68280 [2018-09-14 18:10:15,295 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 833 GetRequests, 819 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2018-09-14 18:10:15,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68280 states. [2018-09-14 18:10:16,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68280 to 63680. [2018-09-14 18:10:16,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63680 states. [2018-09-14 18:10:17,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63680 states to 63680 states and 85157 transitions. [2018-09-14 18:10:17,953 INFO L78 Accepts]: Start accepts. Automaton has 63680 states and 85157 transitions. Word has length 411 [2018-09-14 18:10:17,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:10:17,953 INFO L480 AbstractCegarLoop]: Abstraction has 63680 states and 85157 transitions. [2018-09-14 18:10:17,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:10:17,954 INFO L276 IsEmpty]: Start isEmpty. Operand 63680 states and 85157 transitions. [2018-09-14 18:10:17,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-09-14 18:10:17,983 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:10:17,983 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 18:10:17,983 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:10:17,984 INFO L82 PathProgramCache]: Analyzing trace with hash -519986993, now seen corresponding path program 1 times [2018-09-14 18:10:17,984 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:10:17,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:10:17,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:17,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:10:17,985 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:10:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:10:18,511 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 138 proven. 192 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-14 18:10:18,511 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:10:18,511 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 [2018-09-14 18:10:18,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:18,523 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:10:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:10:18,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:10:18,923 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 329 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 18:10:18,923 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:10:19,373 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 329 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 18:10:19,394 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:10:19,394 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 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:10:19,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:19,412 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:10:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:10:19,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:10:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 284 proven. 87 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-14 18:10:19,928 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:10:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 223 proven. 107 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-14 18:10:20,261 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:10:20,261 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 8, 5] total 16 [2018-09-14 18:10:20,261 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:10:20,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-14 18:10:20,263 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-14 18:10:20,264 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2018-09-14 18:10:20,264 INFO L87 Difference]: Start difference. First operand 63680 states and 85157 transitions. Second operand 10 states. [2018-09-14 18:10:49,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:10:49,660 INFO L93 Difference]: Finished difference Result 227123 states and 310512 transitions. [2018-09-14 18:10:49,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-14 18:10:49,660 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 426 [2018-09-14 18:10:49,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:10:50,332 INFO L225 Difference]: With dead ends: 227123 [2018-09-14 18:10:50,332 INFO L226 Difference]: Without dead ends: 163449 [2018-09-14 18:10:50,581 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1745 GetRequests, 1709 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=260, Invalid=796, Unknown=0, NotChecked=0, Total=1056 [2018-09-14 18:10:50,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163449 states. [2018-09-14 18:10:55,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163449 to 142292. [2018-09-14 18:10:55,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142292 states. [2018-09-14 18:10:56,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142292 states to 142292 states and 179508 transitions. [2018-09-14 18:10:56,145 INFO L78 Accepts]: Start accepts. Automaton has 142292 states and 179508 transitions. Word has length 426 [2018-09-14 18:10:56,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:10:56,145 INFO L480 AbstractCegarLoop]: Abstraction has 142292 states and 179508 transitions. [2018-09-14 18:10:56,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-14 18:10:56,146 INFO L276 IsEmpty]: Start isEmpty. Operand 142292 states and 179508 transitions. [2018-09-14 18:10:56,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2018-09-14 18:10:56,210 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:10:56,211 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, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 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] [2018-09-14 18:10:56,211 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:10:56,211 INFO L82 PathProgramCache]: Analyzing trace with hash -147117252, now seen corresponding path program 1 times [2018-09-14 18:10:56,211 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:10:56,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:10:56,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:56,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:10:56,212 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:10:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:10:56,730 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-09-14 18:10:57,480 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 209 proven. 251 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-09-14 18:10:57,480 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:10:57,480 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 [2018-09-14 18:10:57,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:57,488 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:10:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:10:57,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:10:58,437 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 503 proven. 2 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-09-14 18:10:58,437 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:10:59,684 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 259 proven. 190 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2018-09-14 18:10:59,704 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:10:59,705 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 [2018-09-14 18:10:59,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:59,721 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:11:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:11:00,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:11:00,172 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 431 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-09-14 18:11:00,172 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:11:00,750 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 189 proven. 324 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2018-09-14 18:11:00,752 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:11:00,753 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 5, 5] total 20 [2018-09-14 18:11:00,753 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:11:00,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-14 18:11:00,754 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-14 18:11:00,754 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2018-09-14 18:11:00,754 INFO L87 Difference]: Start difference. First operand 142292 states and 179508 transitions. Second operand 15 states. Received shutdown request... [2018-09-14 18:11:02,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 18:11:02,809 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:11:02,814 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:11:02,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:11:02 BoogieIcfgContainer [2018-09-14 18:11:02,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:11:02,815 INFO L168 Benchmark]: Toolchain (without parser) took 232870.99 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 414.5 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-09-14 18:11:02,816 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-09-14 18:11:02,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1968.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:11:02,818 INFO L168 Benchmark]: Boogie Procedure Inliner took 294.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-14 18:11:02,819 INFO L168 Benchmark]: Boogie Preprocessor took 972.69 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 944.2 MB). Free memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.5 MB. Max. memory is 7.1 GB. [2018-09-14 18:11:02,820 INFO L168 Benchmark]: RCFGBuilder took 11773.80 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 459.2 MB). Peak memory consumption was 459.2 MB. Max. memory is 7.1 GB. [2018-09-14 18:11:02,820 INFO L168 Benchmark]: TraceAbstraction took 217853.80 ms. Allocated memory was 2.5 GB in the beginning and 3.6 GB in the end (delta: 1.1 GB). Free memory was 1.9 GB in the beginning and 1.0 GB in the end (delta: 891.2 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-09-14 18:11:02,826 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1968.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 294.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 972.69 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 944.2 MB). Free memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11773.80 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 459.2 MB). Peak memory consumption was 459.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217853.80 ms. Allocated memory was 2.5 GB in the beginning and 3.6 GB in the end (delta: 1.1 GB). Free memory was 1.9 GB in the beginning and 1.0 GB in the end (delta: 891.2 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 140]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 140). Cancelled while BasicCegarLoop was constructing difference of abstraction (142292states) and FLOYD_HOARE automaton (currently 11 states, 15 states before enhancement), while ReachableStatesComputation was computing reachable states (5958 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 217.7s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 173.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2783 SDtfs, 30834 SDslu, 4134 SDs, 0 SdLazy, 48690 SolverSat, 10294 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 147.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8382 GetRequests, 8133 SyntacticMatches, 42 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 2535 ImplicationChecksByTransitivity, 20.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142292occurred in iteration=9, 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: 12.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 35939 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 28.0s InterpolantComputationTime, 6768 NumberOfCodeBlocks, 6768 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 10803 ConstructedInterpolants, 451 QuantifiedInterpolants, 21398606 SizeOfPredicates, 29 NumberOfNonLiveVariables, 6660 ConjunctsInSsa, 125 ConjunctsInUnsatCore, 34 InterpolantComputations, 8 PerfectInterpolantSequences, 7699/10411 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/Problem17_label47_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-11-02-840.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label47_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-11-02-840.csv Completed graceful shutdown