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/Problem15_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:56:28,892 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:56:28,894 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:56:28,906 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:56:28,907 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:56:28,908 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:56:28,909 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:56:28,911 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:56:28,913 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:56:28,914 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:56:28,915 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:56:28,915 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:56:28,916 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:56:28,917 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:56:28,918 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:56:28,919 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:56:28,920 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:56:28,922 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:56:28,924 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:56:28,925 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:56:28,927 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:56:28,928 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:56:28,930 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 11:56:28,931 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 11:56:28,931 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 11:56:28,932 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 11:56:28,933 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 11:56:28,934 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 11:56:28,935 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 11:56:28,936 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 11:56:28,936 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 11:56:28,937 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 11:56:28,937 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:56:28,938 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:56:28,939 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:56:28,940 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:56:28,940 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 11:56:28,969 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:56:28,970 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:56:28,971 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:56:28,971 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:56:28,971 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:56:28,975 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:56:28,975 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:56:28,975 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:56:28,975 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:56:28,976 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:56:28,976 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:56:28,976 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:56:28,978 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:56:28,979 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:56:28,979 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:56:28,979 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:56:28,979 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:56:28,982 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:56:28,983 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:56:28,983 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:56:28,983 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:56:28,983 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:56:28,984 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:56:28,985 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:56:28,985 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:56:28,985 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:56:28,985 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:56:28,985 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:56:28,986 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:56:28,986 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:56:28,986 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:56:28,986 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:56:28,987 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:56:28,987 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:56:29,036 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:56:29,050 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:56:29,056 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:56:29,058 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:56:29,058 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:56:29,059 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label28_true-unreach-call.c [2018-09-18 11:56:29,406 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b6b206bf/e9e56542260943ea82fccaa97b453fe9/FLAG8cce5fa4d [2018-09-18 11:56:29,814 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:56:29,815 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label28_true-unreach-call.c [2018-09-18 11:56:29,833 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b6b206bf/e9e56542260943ea82fccaa97b453fe9/FLAG8cce5fa4d [2018-09-18 11:56:29,850 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b6b206bf/e9e56542260943ea82fccaa97b453fe9 [2018-09-18 11:56:29,862 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:56:29,865 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:56:29,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:56:29,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:56:29,876 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:56:29,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:56:29" (1/1) ... [2018-09-18 11:56:29,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6652310c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:56:29, skipping insertion in model container [2018-09-18 11:56:29,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:56:29" (1/1) ... [2018-09-18 11:56:29,894 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:56:30,746 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:56:30,765 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:56:31,050 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:56:31,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:56:31 WrapperNode [2018-09-18 11:56:31,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:56:31,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:56:31,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:56:31,208 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:56:31,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:56:31" (1/1) ... [2018-09-18 11:56:31,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:56:31" (1/1) ... [2018-09-18 11:56:31,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:56:31,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:56:31,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:56:31,515 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:56:31,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:56:31" (1/1) ... [2018-09-18 11:56:31,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:56:31" (1/1) ... [2018-09-18 11:56:31,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:56:31" (1/1) ... [2018-09-18 11:56:31,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:56:31" (1/1) ... [2018-09-18 11:56:32,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:56:31" (1/1) ... [2018-09-18 11:56:32,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:56:31" (1/1) ... [2018-09-18 11:56:32,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:56:31" (1/1) ... [2018-09-18 11:56:32,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:56:32,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:56:32,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:56:32,153 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:56:32,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:56:31" (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 11:56:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:56:32,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:56:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 11:56:32,231 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 11:56:32,231 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:56:32,231 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:56:32,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:56:32,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:56:32,232 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:56:32,232 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:56:42,021 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:56:42,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:56:42 BoogieIcfgContainer [2018-09-18 11:56:42,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:56:42,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:56:42,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:56:42,027 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:56:42,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:56:29" (1/3) ... [2018-09-18 11:56:42,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d479be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:56:42, skipping insertion in model container [2018-09-18 11:56:42,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:56:31" (2/3) ... [2018-09-18 11:56:42,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d479be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:56:42, skipping insertion in model container [2018-09-18 11:56:42,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:56:42" (3/3) ... [2018-09-18 11:56:42,031 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label28_true-unreach-call.c [2018-09-18 11:56:42,040 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:56:42,048 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:56:42,098 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:56:42,099 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:56:42,099 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:56:42,099 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:56:42,099 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:56:42,099 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:56:42,099 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:56:42,100 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:56:42,100 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:56:42,134 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-09-18 11:56:42,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-18 11:56:42,142 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:56:42,143 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] [2018-09-18 11:56:42,144 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:56:42,149 INFO L82 PathProgramCache]: Analyzing trace with hash 339561401, now seen corresponding path program 1 times [2018-09-18 11:56:42,151 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:56:42,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:56:42,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:56:42,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:56:42,211 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:56:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:56:42,659 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:56:42,738 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 11:56:42,740 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:56:42,741 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:56:42,741 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:56:42,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:56:42,758 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:56:42,758 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:56:42,760 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-09-18 11:56:47,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:56:47,318 INFO L93 Difference]: Finished difference Result 1194 states and 2152 transitions. [2018-09-18 11:56:47,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:56:47,323 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2018-09-18 11:56:47,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:56:47,349 INFO L225 Difference]: With dead ends: 1194 [2018-09-18 11:56:47,349 INFO L226 Difference]: Without dead ends: 754 [2018-09-18 11:56:47,361 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 11:56:47,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2018-09-18 11:56:47,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 752. [2018-09-18 11:56:47,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2018-09-18 11:56:47,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1325 transitions. [2018-09-18 11:56:47,463 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1325 transitions. Word has length 39 [2018-09-18 11:56:47,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:56:47,464 INFO L480 AbstractCegarLoop]: Abstraction has 752 states and 1325 transitions. [2018-09-18 11:56:47,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:56:47,464 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1325 transitions. [2018-09-18 11:56:47,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-09-18 11:56:47,474 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:56:47,475 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:56:47,475 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:56:47,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1690148053, now seen corresponding path program 1 times [2018-09-18 11:56:47,476 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:56:47,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:56:47,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:56:47,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:56:47,480 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:56:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:56:47,800 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:56:47,800 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:56:47,800 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:56:47,800 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:56:47,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:56:47,803 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:56:47,803 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:56:47,803 INFO L87 Difference]: Start difference. First operand 752 states and 1325 transitions. Second operand 6 states. [2018-09-18 11:57:01,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:57:01,987 INFO L93 Difference]: Finished difference Result 2839 states and 5159 transitions. [2018-09-18 11:57:01,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:57:01,989 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-09-18 11:57:01,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:57:02,008 INFO L225 Difference]: With dead ends: 2839 [2018-09-18 11:57:02,008 INFO L226 Difference]: Without dead ends: 2093 [2018-09-18 11:57:02,017 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:57:02,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2018-09-18 11:57:02,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 2055. [2018-09-18 11:57:02,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2055 states. [2018-09-18 11:57:02,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 3404 transitions. [2018-09-18 11:57:02,126 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 3404 transitions. Word has length 113 [2018-09-18 11:57:02,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:57:02,126 INFO L480 AbstractCegarLoop]: Abstraction has 2055 states and 3404 transitions. [2018-09-18 11:57:02,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:57:02,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 3404 transitions. [2018-09-18 11:57:02,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-09-18 11:57:02,132 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:57:02,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:02,132 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:57:02,132 INFO L82 PathProgramCache]: Analyzing trace with hash 55667084, now seen corresponding path program 1 times [2018-09-18 11:57:02,133 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:57:02,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:57:02,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:57:02,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:57:02,134 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:57:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:57:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:57:02,347 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:57:02,347 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:57:02,347 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:57:02,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:57:02,348 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:57:02,348 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:57:02,349 INFO L87 Difference]: Start difference. First operand 2055 states and 3404 transitions. Second operand 5 states. [2018-09-18 11:57:12,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:57:12,915 INFO L93 Difference]: Finished difference Result 6122 states and 10301 transitions. [2018-09-18 11:57:12,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:57:12,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2018-09-18 11:57:12,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:57:12,939 INFO L225 Difference]: With dead ends: 6122 [2018-09-18 11:57:12,940 INFO L226 Difference]: Without dead ends: 4073 [2018-09-18 11:57:12,948 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:57:12,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4073 states. [2018-09-18 11:57:13,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4073 to 3996. [2018-09-18 11:57:13,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3996 states. [2018-09-18 11:57:13,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 5874 transitions. [2018-09-18 11:57:13,067 INFO L78 Accepts]: Start accepts. Automaton has 3996 states and 5874 transitions. Word has length 116 [2018-09-18 11:57:13,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:57:13,068 INFO L480 AbstractCegarLoop]: Abstraction has 3996 states and 5874 transitions. [2018-09-18 11:57:13,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:57:13,068 INFO L276 IsEmpty]: Start isEmpty. Operand 3996 states and 5874 transitions. [2018-09-18 11:57:13,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-18 11:57:13,071 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:57:13,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:13,071 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:57:13,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1327529950, now seen corresponding path program 1 times [2018-09-18 11:57:13,072 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:57:13,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:57:13,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:57:13,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:57:13,073 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:57:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:57:13,308 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:57:13,308 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:57:13,308 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:57:13,308 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:57:13,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:57:13,309 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:57:13,309 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:57:13,310 INFO L87 Difference]: Start difference. First operand 3996 states and 5874 transitions. Second operand 6 states. [2018-09-18 11:57:22,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:57:22,996 INFO L93 Difference]: Finished difference Result 11083 states and 16941 transitions. [2018-09-18 11:57:22,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:57:22,998 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-09-18 11:57:22,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:57:23,046 INFO L225 Difference]: With dead ends: 11083 [2018-09-18 11:57:23,046 INFO L226 Difference]: Without dead ends: 7093 [2018-09-18 11:57:23,079 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:57:23,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7093 states. [2018-09-18 11:57:23,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7093 to 6984. [2018-09-18 11:57:23,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6984 states. [2018-09-18 11:57:23,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6984 states to 6984 states and 9527 transitions. [2018-09-18 11:57:23,271 INFO L78 Accepts]: Start accepts. Automaton has 6984 states and 9527 transitions. Word has length 126 [2018-09-18 11:57:23,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:57:23,272 INFO L480 AbstractCegarLoop]: Abstraction has 6984 states and 9527 transitions. [2018-09-18 11:57:23,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:57:23,272 INFO L276 IsEmpty]: Start isEmpty. Operand 6984 states and 9527 transitions. [2018-09-18 11:57:23,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-09-18 11:57:23,275 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:57:23,276 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:23,276 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:57:23,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1824244347, now seen corresponding path program 1 times [2018-09-18 11:57:23,276 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:57:23,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:57:23,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:57:23,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:57:23,277 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:57:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:57:23,497 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:57:23,497 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:57:23,497 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:57:23,497 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:57:23,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:57:23,498 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:57:23,498 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:57:23,499 INFO L87 Difference]: Start difference. First operand 6984 states and 9527 transitions. Second operand 5 states. [2018-09-18 11:57:36,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:57:36,691 INFO L93 Difference]: Finished difference Result 18666 states and 26327 transitions. [2018-09-18 11:57:36,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:57:36,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2018-09-18 11:57:36,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:57:36,746 INFO L225 Difference]: With dead ends: 18666 [2018-09-18 11:57:36,746 INFO L226 Difference]: Without dead ends: 11688 [2018-09-18 11:57:36,778 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:57:36,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11688 states. [2018-09-18 11:57:37,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11688 to 11527. [2018-09-18 11:57:37,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11527 states. [2018-09-18 11:57:37,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11527 states to 11527 states and 15503 transitions. [2018-09-18 11:57:37,053 INFO L78 Accepts]: Start accepts. Automaton has 11527 states and 15503 transitions. Word has length 136 [2018-09-18 11:57:37,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:57:37,054 INFO L480 AbstractCegarLoop]: Abstraction has 11527 states and 15503 transitions. [2018-09-18 11:57:37,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:57:37,054 INFO L276 IsEmpty]: Start isEmpty. Operand 11527 states and 15503 transitions. [2018-09-18 11:57:37,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-09-18 11:57:37,058 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:57:37,058 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:37,058 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:57:37,059 INFO L82 PathProgramCache]: Analyzing trace with hash 298084566, now seen corresponding path program 1 times [2018-09-18 11:57:37,059 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:57:37,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:57:37,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:57:37,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:57:37,060 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:57:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:57:37,600 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-09-18 11:57:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:57:37,946 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:57:37,946 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 11:57:37,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:57:37,962 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:57:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:57:38,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:57:38,383 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:57:38,383 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:57:38,516 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2018-09-18 11:57:39,091 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:57:39,127 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 11:57:39,127 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 10 [2018-09-18 11:57:39,127 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:57:39,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:57:39,128 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:57:39,131 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:57:39,132 INFO L87 Difference]: Start difference. First operand 11527 states and 15503 transitions. Second operand 5 states. [2018-09-18 11:57:39,355 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-09-18 11:57:40,835 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-18 11:57:52,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:57:52,573 INFO L93 Difference]: Finished difference Result 24697 states and 33920 transitions. [2018-09-18 11:57:52,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:57:52,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2018-09-18 11:57:52,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:57:52,653 INFO L225 Difference]: With dead ends: 24697 [2018-09-18 11:57:52,653 INFO L226 Difference]: Without dead ends: 13493 [2018-09-18 11:57:52,723 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 301 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:57:52,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13493 states. [2018-09-18 11:57:53,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13493 to 13341. [2018-09-18 11:57:53,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13341 states. [2018-09-18 11:57:53,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13341 states to 13341 states and 17924 transitions. [2018-09-18 11:57:53,099 INFO L78 Accepts]: Start accepts. Automaton has 13341 states and 17924 transitions. Word has length 151 [2018-09-18 11:57:53,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:57:53,100 INFO L480 AbstractCegarLoop]: Abstraction has 13341 states and 17924 transitions. [2018-09-18 11:57:53,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:57:53,100 INFO L276 IsEmpty]: Start isEmpty. Operand 13341 states and 17924 transitions. [2018-09-18 11:57:53,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-09-18 11:57:53,109 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:57:53,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:53,110 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:57:53,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1078259781, now seen corresponding path program 1 times [2018-09-18 11:57:53,110 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:57:53,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:57:53,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:57:53,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:57:53,116 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:57:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:57:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:57:53,923 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:57:53,923 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 11:57:53,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:57:53,934 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:57:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:57:54,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:57:55,350 WARN L178 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-09-18 11:57:55,416 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:57:55,416 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:57:55,608 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-09-18 11:57:55,745 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2018-09-18 11:57:56,377 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:57:56,397 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 11:57:56,398 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 12 [2018-09-18 11:57:56,398 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:57:56,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:57:56,399 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:57:56,399 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:57:56,399 INFO L87 Difference]: Start difference. First operand 13341 states and 17924 transitions. Second operand 5 states. [2018-09-18 11:58:08,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:58:08,447 INFO L93 Difference]: Finished difference Result 29646 states and 40519 transitions. [2018-09-18 11:58:08,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:58:08,448 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2018-09-18 11:58:08,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:58:08,515 INFO L225 Difference]: With dead ends: 29646 [2018-09-18 11:58:08,515 INFO L226 Difference]: Without dead ends: 16311 [2018-09-18 11:58:08,543 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 364 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-09-18 11:58:08,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16311 states. [2018-09-18 11:58:08,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16311 to 14770. [2018-09-18 11:58:08,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14770 states. [2018-09-18 11:58:08,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14770 states to 14770 states and 19814 transitions. [2018-09-18 11:58:08,864 INFO L78 Accepts]: Start accepts. Automaton has 14770 states and 19814 transitions. Word has length 184 [2018-09-18 11:58:08,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:58:08,864 INFO L480 AbstractCegarLoop]: Abstraction has 14770 states and 19814 transitions. [2018-09-18 11:58:08,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:58:08,864 INFO L276 IsEmpty]: Start isEmpty. Operand 14770 states and 19814 transitions. [2018-09-18 11:58:08,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-09-18 11:58:08,871 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:58:08,871 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:58:08,871 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:58:08,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1643772052, now seen corresponding path program 1 times [2018-09-18 11:58:08,872 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:58:08,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:58:08,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:58:08,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:58:08,874 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:58:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:58:09,904 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-18 11:58:10,335 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-09-18 11:58:10,670 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-18 11:58:11,090 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:58:11,091 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:58:11,091 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 11:58:11,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:58:11,107 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:58:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:58:11,204 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:58:11,892 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-09-18 11:58:12,044 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 119 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:58:12,045 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:58:12,315 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-09-18 11:58:12,806 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 69 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:58:12,826 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:58:12,826 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 [2018-09-18 11:58:12,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:58:12,968 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:58:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:58:13,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:58:13,413 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 69 proven. 41 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-18 11:58:13,414 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:58:14,120 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 69 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:58:14,122 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:58:14,122 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9, 8, 9] total 24 [2018-09-18 11:58:14,122 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:58:14,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-18 11:58:14,124 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-18 11:58:14,124 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2018-09-18 11:58:14,125 INFO L87 Difference]: Start difference. First operand 14770 states and 19814 transitions. Second operand 14 states. [2018-09-18 11:58:26,457 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-09-18 11:58:41,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:58:41,987 INFO L93 Difference]: Finished difference Result 36258 states and 49953 transitions. [2018-09-18 11:58:41,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-18 11:58:41,988 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 247 [2018-09-18 11:58:41,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:58:42,039 INFO L225 Difference]: With dead ends: 36258 [2018-09-18 11:58:42,040 INFO L226 Difference]: Without dead ends: 20897 [2018-09-18 11:58:42,075 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1022 GetRequests, 974 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=527, Invalid=1729, Unknown=0, NotChecked=0, Total=2256 [2018-09-18 11:58:42,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20897 states. [2018-09-18 11:58:42,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20897 to 18253. [2018-09-18 11:58:42,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18253 states. [2018-09-18 11:58:42,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18253 states to 18253 states and 24723 transitions. [2018-09-18 11:58:42,414 INFO L78 Accepts]: Start accepts. Automaton has 18253 states and 24723 transitions. Word has length 247 [2018-09-18 11:58:42,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:58:42,414 INFO L480 AbstractCegarLoop]: Abstraction has 18253 states and 24723 transitions. [2018-09-18 11:58:42,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-18 11:58:42,415 INFO L276 IsEmpty]: Start isEmpty. Operand 18253 states and 24723 transitions. [2018-09-18 11:58:42,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-09-18 11:58:42,424 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:58:42,424 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:58:42,425 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:58:42,425 INFO L82 PathProgramCache]: Analyzing trace with hash 800491217, now seen corresponding path program 1 times [2018-09-18 11:58:42,425 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:58:42,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:58:42,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:58:42,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:58:42,427 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:58:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:58:43,170 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:58:43,171 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:58:43,171 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 [2018-09-18 11:58:43,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:58:43,178 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:58:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:58:43,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:58:43,744 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 119 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:58:43,745 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:58:44,289 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 69 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:58:44,311 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:58:44,311 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 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:58:44,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:58:44,328 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:58:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:58:44,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:58:45,001 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 69 proven. 57 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-18 11:58:45,001 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:58:45,527 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 69 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:58:45,530 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:58:45,530 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9, 8, 9] total 24 [2018-09-18 11:58:45,530 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:58:45,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-18 11:58:45,531 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-18 11:58:45,531 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2018-09-18 11:58:45,532 INFO L87 Difference]: Start difference. First operand 18253 states and 24723 transitions. Second operand 14 states. [2018-09-18 11:59:12,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:59:12,825 INFO L93 Difference]: Finished difference Result 40580 states and 55512 transitions. [2018-09-18 11:59:12,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-18 11:59:12,826 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 332 [2018-09-18 11:59:12,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:59:13,052 INFO L225 Difference]: With dead ends: 40580 [2018-09-18 11:59:13,052 INFO L226 Difference]: Without dead ends: 21737 [2018-09-18 11:59:13,078 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1362 GetRequests, 1311 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=524, Invalid=1732, Unknown=0, NotChecked=0, Total=2256 [2018-09-18 11:59:13,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21737 states. [2018-09-18 11:59:13,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21737 to 18146. [2018-09-18 11:59:13,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18146 states. [2018-09-18 11:59:13,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18146 states to 18146 states and 24357 transitions. [2018-09-18 11:59:13,382 INFO L78 Accepts]: Start accepts. Automaton has 18146 states and 24357 transitions. Word has length 332 [2018-09-18 11:59:13,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:59:13,382 INFO L480 AbstractCegarLoop]: Abstraction has 18146 states and 24357 transitions. [2018-09-18 11:59:13,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-18 11:59:13,382 INFO L276 IsEmpty]: Start isEmpty. Operand 18146 states and 24357 transitions. [2018-09-18 11:59:13,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2018-09-18 11:59:13,392 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:59:13,393 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:59:13,393 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:59:13,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1611905785, now seen corresponding path program 1 times [2018-09-18 11:59:13,393 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:59:13,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:13,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:13,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:13,395 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:59:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:14,395 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 35 proven. 135 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-18 11:59:14,395 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:59:14,395 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 11:59:14,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:14,402 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:59:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:14,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:59:15,159 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:59:15,160 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:59:15,465 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:59:15,486 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:59:15,486 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 11:59:15,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:15,503 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:59:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:15,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:59:15,929 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-18 11:59:15,929 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:59:16,750 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-18 11:59:16,752 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-18 11:59:16,753 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5, 5, 5] total 17 [2018-09-18 11:59:16,753 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:59:16,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:59:16,753 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:59:16,753 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-09-18 11:59:16,754 INFO L87 Difference]: Start difference. First operand 18146 states and 24357 transitions. Second operand 5 states. [2018-09-18 11:59:22,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:59:22,829 INFO L93 Difference]: Finished difference Result 46868 states and 64305 transitions. [2018-09-18 11:59:22,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:59:22,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 389 [2018-09-18 11:59:22,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:59:22,892 INFO L225 Difference]: With dead ends: 46868 [2018-09-18 11:59:22,892 INFO L226 Difference]: Without dead ends: 29039 [2018-09-18 11:59:22,931 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1567 GetRequests, 1548 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2018-09-18 11:59:22,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29039 states. [2018-09-18 11:59:23,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29039 to 28579. [2018-09-18 11:59:23,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28579 states. [2018-09-18 11:59:23,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28579 states to 28579 states and 37539 transitions. [2018-09-18 11:59:23,361 INFO L78 Accepts]: Start accepts. Automaton has 28579 states and 37539 transitions. Word has length 389 [2018-09-18 11:59:23,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:59:23,362 INFO L480 AbstractCegarLoop]: Abstraction has 28579 states and 37539 transitions. [2018-09-18 11:59:23,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:59:23,362 INFO L276 IsEmpty]: Start isEmpty. Operand 28579 states and 37539 transitions. [2018-09-18 11:59:23,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-09-18 11:59:23,381 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:59:23,381 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:59:23,381 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:59:23,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1073762686, now seen corresponding path program 1 times [2018-09-18 11:59:23,382 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:59:23,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:23,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:23,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:23,383 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:59:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:23,830 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 8 [2018-09-18 11:59:24,677 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 69 proven. 131 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-09-18 11:59:24,678 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:59:24,678 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 11:59:24,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:24,687 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:59:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:24,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:59:25,093 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:59:25,093 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:59:25,466 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:59:25,488 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:59:25,488 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 [2018-09-18 11:59:25,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:25,504 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:59:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:25,785 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:59:26,033 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2018-09-18 11:59:26,033 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:59:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (11)] Exception during sending of exit command (exit): Broken pipe [2018-09-18 11:59:26,796 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-18 11:59:26,796 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 5, 5, 5] total 17 [2018-09-18 11:59:26,796 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:59:26,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:59:26,797 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:59:26,797 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2018-09-18 11:59:26,798 INFO L87 Difference]: Start difference. First operand 28579 states and 37539 transitions. Second operand 5 states. [2018-09-18 11:59:32,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:59:32,589 INFO L93 Difference]: Finished difference Result 61487 states and 82460 transitions. [2018-09-18 11:59:32,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:59:32,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 422 [2018-09-18 11:59:32,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:59:32,655 INFO L225 Difference]: With dead ends: 61487 [2018-09-18 11:59:32,655 INFO L226 Difference]: Without dead ends: 33225 [2018-09-18 11:59:32,706 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1701 GetRequests, 1674 SyntacticMatches, 11 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-09-18 11:59:32,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33225 states. [2018-09-18 11:59:33,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33225 to 33183. [2018-09-18 11:59:33,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33183 states. [2018-09-18 11:59:33,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33183 states to 33183 states and 41212 transitions. [2018-09-18 11:59:33,178 INFO L78 Accepts]: Start accepts. Automaton has 33183 states and 41212 transitions. Word has length 422 [2018-09-18 11:59:33,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:59:33,179 INFO L480 AbstractCegarLoop]: Abstraction has 33183 states and 41212 transitions. [2018-09-18 11:59:33,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:59:33,179 INFO L276 IsEmpty]: Start isEmpty. Operand 33183 states and 41212 transitions. [2018-09-18 11:59:33,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-09-18 11:59:33,193 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:59:33,193 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:59:33,194 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:59:33,194 INFO L82 PathProgramCache]: Analyzing trace with hash 394036745, now seen corresponding path program 1 times [2018-09-18 11:59:33,194 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:59:33,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:33,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:33,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:33,195 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:59:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:34,354 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 35 proven. 135 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-18 11:59:34,354 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:59:34,354 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 11:59:34,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:34,363 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:59:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:34,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:59:34,803 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-18 11:59:34,803 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:59:35,247 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-18 11:59:35,267 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 11:59:35,268 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-09-18 11:59:35,268 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:59:35,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:59:35,268 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:59:35,269 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:59:35,269 INFO L87 Difference]: Start difference. First operand 33183 states and 41212 transitions. Second operand 3 states. [2018-09-18 11:59:44,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:59:44,033 INFO L93 Difference]: Finished difference Result 70877 states and 91427 transitions. [2018-09-18 11:59:44,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:59:44,033 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 426 [2018-09-18 11:59:44,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:59:44,118 INFO L225 Difference]: With dead ends: 70877 [2018-09-18 11:59:44,118 INFO L226 Difference]: Without dead ends: 38011 [2018-09-18 11:59:44,179 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 863 GetRequests, 855 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:59:44,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38011 states. [2018-09-18 11:59:44,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38011 to 37999. [2018-09-18 11:59:44,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37999 states. [2018-09-18 11:59:44,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37999 states to 37999 states and 48016 transitions. [2018-09-18 11:59:44,722 INFO L78 Accepts]: Start accepts. Automaton has 37999 states and 48016 transitions. Word has length 426 [2018-09-18 11:59:44,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:59:44,723 INFO L480 AbstractCegarLoop]: Abstraction has 37999 states and 48016 transitions. [2018-09-18 11:59:44,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:59:44,723 INFO L276 IsEmpty]: Start isEmpty. Operand 37999 states and 48016 transitions. [2018-09-18 11:59:44,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-09-18 11:59:44,735 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:59:44,735 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:59:44,736 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:59:44,736 INFO L82 PathProgramCache]: Analyzing trace with hash 171132160, now seen corresponding path program 1 times [2018-09-18 11:59:44,736 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:59:44,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:44,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:44,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:44,737 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:59:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-09-18 11:59:45,201 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:59:45,202 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:59:45,202 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:59:45,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:59:45,203 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:59:45,203 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:59:45,203 INFO L87 Difference]: Start difference. First operand 37999 states and 48016 transitions. Second operand 4 states. [2018-09-18 11:59:51,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:59:51,107 INFO L93 Difference]: Finished difference Result 110346 states and 146920 transitions. [2018-09-18 11:59:51,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:59:51,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 478 [2018-09-18 11:59:51,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:59:51,303 INFO L225 Difference]: With dead ends: 110346 [2018-09-18 11:59:51,304 INFO L226 Difference]: Without dead ends: 71841 [2018-09-18 11:59:51,438 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:59:51,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71841 states. [2018-09-18 11:59:52,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71841 to 71752. [2018-09-18 11:59:52,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71752 states. [2018-09-18 11:59:52,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71752 states to 71752 states and 87754 transitions. [2018-09-18 11:59:52,515 INFO L78 Accepts]: Start accepts. Automaton has 71752 states and 87754 transitions. Word has length 478 [2018-09-18 11:59:52,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:59:52,516 INFO L480 AbstractCegarLoop]: Abstraction has 71752 states and 87754 transitions. [2018-09-18 11:59:52,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:59:52,516 INFO L276 IsEmpty]: Start isEmpty. Operand 71752 states and 87754 transitions. [2018-09-18 11:59:52,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2018-09-18 11:59:52,527 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:59:52,527 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:59:52,528 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:59:52,528 INFO L82 PathProgramCache]: Analyzing trace with hash 324661564, now seen corresponding path program 1 times [2018-09-18 11:59:52,528 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:59:52,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:52,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:52,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:52,529 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:59:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:52,985 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 100 proven. 13 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2018-09-18 11:59:52,985 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:59:52,985 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:59:52,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:52,997 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:59:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:53,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:59:54,028 WARN L178 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 1610 DAG size of output: 46 [2018-09-18 11:59:54,370 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 218 proven. 35 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-18 11:59:54,370 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:59:55,543 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2018-09-18 11:59:55,563 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:59:55,564 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 12 [2018-09-18 11:59:55,564 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:59:55,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:59:55,565 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:59:55,565 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:59:55,565 INFO L87 Difference]: Start difference. First operand 71752 states and 87754 transitions. Second operand 3 states. [2018-09-18 11:59:59,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:59:59,727 INFO L93 Difference]: Finished difference Result 151628 states and 188592 transitions. [2018-09-18 11:59:59,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:59:59,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 503 [2018-09-18 11:59:59,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:59:59,924 INFO L225 Difference]: With dead ends: 151628 [2018-09-18 11:59:59,924 INFO L226 Difference]: Without dead ends: 80190 [2018-09-18 12:00:00,066 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1016 GetRequests, 1004 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:00:00,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80190 states. [2018-09-18 12:00:00,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80190 to 80088. [2018-09-18 12:00:00,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80088 states. [2018-09-18 12:00:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80088 states to 80088 states and 98852 transitions. [2018-09-18 12:00:01,132 INFO L78 Accepts]: Start accepts. Automaton has 80088 states and 98852 transitions. Word has length 503 [2018-09-18 12:00:01,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:00:01,133 INFO L480 AbstractCegarLoop]: Abstraction has 80088 states and 98852 transitions. [2018-09-18 12:00:01,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:00:01,133 INFO L276 IsEmpty]: Start isEmpty. Operand 80088 states and 98852 transitions. [2018-09-18 12:00:01,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2018-09-18 12:00:01,148 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:00:01,148 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:01,149 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:00:01,149 INFO L82 PathProgramCache]: Analyzing trace with hash 645714155, now seen corresponding path program 1 times [2018-09-18 12:00:01,149 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:00:01,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:00:01,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:00:01,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:00:01,150 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:00:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:00:01,849 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 340 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-18 12:00:01,850 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:00:01,850 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 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 12:00:01,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:00:01,857 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:00:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:00:02,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:00:02,650 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 340 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-18 12:00:02,650 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:00:02,970 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 340 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-18 12:00:02,991 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:00:02,991 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 12:00:03,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:00:03,007 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:00:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:00:03,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:00:03,508 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 340 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-18 12:00:03,508 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:00:03,798 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 340 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-18 12:00:03,800 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:00:03,801 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 12:00:03,801 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:00:03,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:00:03,803 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:00:03,803 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:00:03,803 INFO L87 Difference]: Start difference. First operand 80088 states and 98852 transitions. Second operand 9 states. [2018-09-18 12:00:13,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:00:13,834 INFO L93 Difference]: Finished difference Result 155688 states and 196597 transitions. [2018-09-18 12:00:13,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-18 12:00:13,834 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 557 [2018-09-18 12:00:13,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:00:14,029 INFO L225 Difference]: With dead ends: 155688 [2018-09-18 12:00:14,029 INFO L226 Difference]: Without dead ends: 75914 [2018-09-18 12:00:14,202 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2256 GetRequests, 2229 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2018-09-18 12:00:14,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75914 states. [2018-09-18 12:00:15,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75914 to 72133. [2018-09-18 12:00:15,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72133 states. [2018-09-18 12:00:15,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72133 states to 72133 states and 83462 transitions. [2018-09-18 12:00:15,281 INFO L78 Accepts]: Start accepts. Automaton has 72133 states and 83462 transitions. Word has length 557 [2018-09-18 12:00:15,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:00:15,282 INFO L480 AbstractCegarLoop]: Abstraction has 72133 states and 83462 transitions. [2018-09-18 12:00:15,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:00:15,282 INFO L276 IsEmpty]: Start isEmpty. Operand 72133 states and 83462 transitions. [2018-09-18 12:00:15,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2018-09-18 12:00:15,298 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:00:15,298 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:15,299 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:00:15,299 INFO L82 PathProgramCache]: Analyzing trace with hash 337471277, now seen corresponding path program 1 times [2018-09-18 12:00:15,299 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:00:15,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:00:15,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:00:15,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:00:15,300 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:00:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:00:15,865 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2018-09-18 12:00:15,866 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:00:15,866 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:00:15,866 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:00:15,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:00:15,867 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:00:15,867 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:00:15,867 INFO L87 Difference]: Start difference. First operand 72133 states and 83462 transitions. Second operand 4 states. [2018-09-18 12:00:21,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:00:21,666 INFO L93 Difference]: Finished difference Result 153100 states and 177854 transitions. [2018-09-18 12:00:21,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:00:21,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 583 [2018-09-18 12:00:21,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:00:21,837 INFO L225 Difference]: With dead ends: 153100 [2018-09-18 12:00:21,837 INFO L226 Difference]: Without dead ends: 81281 [2018-09-18 12:00:21,946 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:00:21,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81281 states. [2018-09-18 12:00:22,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81281 to 79750. [2018-09-18 12:00:22,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79750 states. [2018-09-18 12:00:22,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79750 states to 79750 states and 91655 transitions. [2018-09-18 12:00:22,870 INFO L78 Accepts]: Start accepts. Automaton has 79750 states and 91655 transitions. Word has length 583 [2018-09-18 12:00:22,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:00:22,871 INFO L480 AbstractCegarLoop]: Abstraction has 79750 states and 91655 transitions. [2018-09-18 12:00:22,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:00:22,871 INFO L276 IsEmpty]: Start isEmpty. Operand 79750 states and 91655 transitions. [2018-09-18 12:00:22,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2018-09-18 12:00:22,934 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:00:22,934 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:00:22,935 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:00:22,935 INFO L82 PathProgramCache]: Analyzing trace with hash 347033328, now seen corresponding path program 1 times [2018-09-18 12:00:22,935 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:00:22,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:00:22,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:00:22,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:00:22,936 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:00:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:00:24,289 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-09-18 12:00:24,790 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2018-09-18 12:00:26,755 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 451 proven. 35 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-18 12:00:26,756 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:00:26,756 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 12:00:26,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:00:26,765 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:00:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:00:26,972 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-09-18 12:00:27,189 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-18 12:00:27,392 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:00:27,392 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 12:00:27,399 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 12:00:27,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:00:27 BoogieIcfgContainer [2018-09-18 12:00:27,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 12:00:27,400 INFO L168 Benchmark]: Toolchain (without parser) took 237538.05 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.1 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-09-18 12:00:27,402 INFO L168 Benchmark]: CDTParser took 0.19 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 12:00:27,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1340.26 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-09-18 12:00:27,404 INFO L168 Benchmark]: Boogie Procedure Inliner took 307.18 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-18 12:00:27,405 INFO L168 Benchmark]: Boogie Preprocessor took 637.87 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 881.3 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 89.5 MB. Max. memory is 7.1 GB. [2018-09-18 12:00:27,407 INFO L168 Benchmark]: RCFGBuilder took 9870.01 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: 303.6 MB). Peak memory consumption was 303.6 MB. Max. memory is 7.1 GB. [2018-09-18 12:00:27,407 INFO L168 Benchmark]: TraceAbstraction took 225375.60 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -228.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-09-18 12:00:27,419 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1340.26 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 307.18 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 637.87 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 881.3 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 89.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9870.01 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: 303.6 MB). Peak memory consumption was 303.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225375.60 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -228.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 103). Cancelled while BasicCegarLoop was analyzing trace of length 731 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 225.3s OverallTime, 17 OverallIterations, 4 TraceHistogramMax, 181.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5415 SDtfs, 30627 SDslu, 4086 SDs, 0 SdLazy, 52063 SolverSat, 9165 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 157.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10530 GetRequests, 10280 SyntacticMatches, 36 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1605 ImplicationChecksByTransitivity, 15.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80088occurred in iteration=14, 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: 7.7s AutomataMinimizationTime, 16 MinimizatonAttempts, 14332 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 25.1s InterpolantComputationTime, 9960 NumberOfCodeBlocks, 9960 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 15074 ConstructedInterpolants, 72 QuantifiedInterpolants, 29618617 SizeOfPredicates, 41 NumberOfNonLiveVariables, 7744 ConjunctsInSsa, 174 ConjunctsInUnsatCore, 44 InterpolantComputations, 16 PerfectInterpolantSequences, 7405/8536 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/Problem15_label28_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_12-00-27-438.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label28_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_12-00-27-438.csv Completed graceful shutdown