java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label00_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 12:08:36,163 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 12:08:36,165 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 12:08:36,183 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 12:08:36,184 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 12:08:36,185 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 12:08:36,186 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 12:08:36,188 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 12:08:36,189 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 12:08:36,190 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 12:08:36,191 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 12:08:36,191 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 12:08:36,192 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 12:08:36,193 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 12:08:36,194 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 12:08:36,195 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 12:08:36,196 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 12:08:36,198 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 12:08:36,200 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 12:08:36,201 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 12:08:36,202 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 12:08:36,204 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 12:08:36,206 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 12:08:36,206 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 12:08:36,207 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 12:08:36,208 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 12:08:36,209 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 12:08:36,210 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 12:08:36,210 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 12:08:36,212 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 12:08:36,212 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 12:08:36,213 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 12:08:36,213 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 12:08:36,213 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 12:08:36,214 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 12:08:36,215 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 12:08:36,215 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 12:08:36,245 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 12:08:36,245 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 12:08:36,246 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 12:08:36,246 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 12:08:36,246 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 12:08:36,247 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 12:08:36,247 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 12:08:36,247 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 12:08:36,247 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 12:08:36,248 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 12:08:36,248 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 12:08:36,248 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 12:08:36,249 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 12:08:36,249 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 12:08:36,250 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 12:08:36,251 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 12:08:36,251 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 12:08:36,251 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 12:08:36,251 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 12:08:36,251 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 12:08:36,252 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 12:08:36,252 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 12:08:36,252 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 12:08:36,252 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 12:08:36,254 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:08:36,254 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 12:08:36,254 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 12:08:36,255 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 12:08:36,255 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 12:08:36,255 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 12:08:36,255 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 12:08:36,255 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 12:08:36,256 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 12:08:36,256 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 12:08:36,312 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 12:08:36,326 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 12:08:36,333 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 12:08:36,335 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 12:08:36,335 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 12:08:36,336 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label00_true-unreach-call.c [2018-09-18 12:08:36,698 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e35263bf4/7e24d65331e14c1f9f1ccfc103b6e3c4/FLAG095caa847 [2018-09-18 12:08:37,112 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 12:08:37,113 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label00_true-unreach-call.c [2018-09-18 12:08:37,147 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e35263bf4/7e24d65331e14c1f9f1ccfc103b6e3c4/FLAG095caa847 [2018-09-18 12:08:37,164 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e35263bf4/7e24d65331e14c1f9f1ccfc103b6e3c4 [2018-09-18 12:08:37,176 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 12:08:37,179 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 12:08:37,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 12:08:37,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 12:08:37,189 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 12:08:37,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:08:37" (1/1) ... [2018-09-18 12:08:37,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a2763a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:08:37, skipping insertion in model container [2018-09-18 12:08:37,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:08:37" (1/1) ... [2018-09-18 12:08:37,206 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 12:08:38,292 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:08:38,311 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 12:08:38,682 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:08:38,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:08:38 WrapperNode [2018-09-18 12:08:38,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 12:08:38,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 12:08:38,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 12:08:38,931 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 12:08:38,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:08:38" (1/1) ... [2018-09-18 12:08:39,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:08:38" (1/1) ... [2018-09-18 12:08:39,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 12:08:39,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 12:08:39,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 12:08:39,191 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 12:08:39,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:08:38" (1/1) ... [2018-09-18 12:08:39,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:08:38" (1/1) ... [2018-09-18 12:08:39,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:08:38" (1/1) ... [2018-09-18 12:08:39,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:08:38" (1/1) ... [2018-09-18 12:08:39,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:08:38" (1/1) ... [2018-09-18 12:08:39,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:08:38" (1/1) ... [2018-09-18 12:08:40,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:08:38" (1/1) ... [2018-09-18 12:08:40,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 12:08:40,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 12:08:40,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 12:08:40,074 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 12:08:40,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:08:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:08:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 12:08:40,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 12:08:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 12:08:40,154 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 12:08:40,154 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 12:08:40,154 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 12:08:40,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 12:08:40,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 12:08:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 12:08:40,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 12:08:54,849 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 12:08:54,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:08:54 BoogieIcfgContainer [2018-09-18 12:08:54,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 12:08:54,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 12:08:54,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 12:08:54,854 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 12:08:54,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:08:37" (1/3) ... [2018-09-18 12:08:54,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e46287c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:08:54, skipping insertion in model container [2018-09-18 12:08:54,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:08:38" (2/3) ... [2018-09-18 12:08:54,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e46287c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:08:54, skipping insertion in model container [2018-09-18 12:08:54,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:08:54" (3/3) ... [2018-09-18 12:08:54,858 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label00_true-unreach-call.c [2018-09-18 12:08:54,867 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 12:08:54,877 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 12:08:54,934 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 12:08:54,935 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 12:08:54,935 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 12:08:54,935 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 12:08:54,935 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 12:08:54,936 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 12:08:54,936 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 12:08:54,936 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 12:08:54,936 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 12:08:54,977 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-18 12:08:54,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-09-18 12:08:54,992 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:08:54,994 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:08:54,995 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:08:55,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1314477298, now seen corresponding path program 1 times [2018-09-18 12:08:55,003 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:08:55,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:08:55,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:08:55,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:08:55,053 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:08:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:08:55,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:08:55,582 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:08:55,582 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:08:55,582 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:08:55,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:08:55,604 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:08:55,605 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:08:55,608 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-18 12:09:08,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:09:08,048 INFO L93 Difference]: Finished difference Result 2139 states and 3961 transitions. [2018-09-18 12:09:08,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:09:08,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2018-09-18 12:09:08,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:09:08,082 INFO L225 Difference]: With dead ends: 2139 [2018-09-18 12:09:08,082 INFO L226 Difference]: Without dead ends: 1529 [2018-09-18 12:09:08,094 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:09:08,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2018-09-18 12:09:08,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1527. [2018-09-18 12:09:08,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1527 states. [2018-09-18 12:09:08,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2413 transitions. [2018-09-18 12:09:08,271 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2413 transitions. Word has length 61 [2018-09-18 12:09:08,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:09:08,272 INFO L480 AbstractCegarLoop]: Abstraction has 1527 states and 2413 transitions. [2018-09-18 12:09:08,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:09:08,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2413 transitions. [2018-09-18 12:09:08,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-09-18 12:09:08,286 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:09:08,286 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 12:09:08,287 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:09:08,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1910289401, now seen corresponding path program 1 times [2018-09-18 12:09:08,287 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:09:08,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:09:08,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:09:08,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:09:08,290 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:09:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:09:08,718 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:09:08,718 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:09:08,719 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:09:08,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:09:08,734 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:09:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:09:08,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:09:33,582 WARN L178 SmtUtils]: Spent 24.37 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-09-18 12:09:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:09:33,750 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:09:40,053 WARN L178 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-09-18 12:09:40,278 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-09-18 12:09:41,062 WARN L178 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-09-18 12:09:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:09:41,461 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:09:41,461 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-09-18 12:09:41,462 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:09:41,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:09:41,463 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:09:41,463 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=108, Unknown=2, NotChecked=0, Total=156 [2018-09-18 12:09:41,464 INFO L87 Difference]: Start difference. First operand 1527 states and 2413 transitions. Second operand 6 states. [2018-09-18 12:11:03,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:11:03,290 INFO L93 Difference]: Finished difference Result 5752 states and 9380 transitions. [2018-09-18 12:11:03,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 12:11:03,292 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-09-18 12:11:03,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:11:03,326 INFO L225 Difference]: With dead ends: 5752 [2018-09-18 12:11:03,326 INFO L226 Difference]: Without dead ends: 4231 [2018-09-18 12:11:03,339 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 267 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 32.0s TimeCoverageRelationStatistics Valid=46, Invalid=108, Unknown=2, NotChecked=0, Total=156 [2018-09-18 12:11:03,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2018-09-18 12:11:03,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 4198. [2018-09-18 12:11:03,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4198 states. [2018-09-18 12:11:03,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4198 states to 4198 states and 6444 transitions. [2018-09-18 12:11:03,471 INFO L78 Accepts]: Start accepts. Automaton has 4198 states and 6444 transitions. Word has length 136 [2018-09-18 12:11:03,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:11:03,472 INFO L480 AbstractCegarLoop]: Abstraction has 4198 states and 6444 transitions. [2018-09-18 12:11:03,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:11:03,472 INFO L276 IsEmpty]: Start isEmpty. Operand 4198 states and 6444 transitions. [2018-09-18 12:11:03,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-09-18 12:11:03,484 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:11:03,484 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:11:03,484 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:11:03,485 INFO L82 PathProgramCache]: Analyzing trace with hash 955245470, now seen corresponding path program 1 times [2018-09-18 12:11:03,485 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:11:03,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:11:03,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:11:03,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:11:03,486 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:11:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:11:03,787 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:11:03,787 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:11:03,788 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:11:03,788 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:11:03,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:11:03,789 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:11:03,789 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:11:03,789 INFO L87 Difference]: Start difference. First operand 4198 states and 6444 transitions. Second operand 6 states. [2018-09-18 12:11:11,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:11:11,701 INFO L93 Difference]: Finished difference Result 12527 states and 20224 transitions. [2018-09-18 12:11:11,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:11:11,703 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2018-09-18 12:11:11,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:11:11,767 INFO L225 Difference]: With dead ends: 12527 [2018-09-18 12:11:11,767 INFO L226 Difference]: Without dead ends: 8335 [2018-09-18 12:11:11,790 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 12:11:11,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8335 states. [2018-09-18 12:11:12,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8335 to 8270. [2018-09-18 12:11:12,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8270 states. [2018-09-18 12:11:12,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8270 states to 8270 states and 12214 transitions. [2018-09-18 12:11:12,046 INFO L78 Accepts]: Start accepts. Automaton has 8270 states and 12214 transitions. Word has length 177 [2018-09-18 12:11:12,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:11:12,047 INFO L480 AbstractCegarLoop]: Abstraction has 8270 states and 12214 transitions. [2018-09-18 12:11:12,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:11:12,047 INFO L276 IsEmpty]: Start isEmpty. Operand 8270 states and 12214 transitions. [2018-09-18 12:11:12,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-09-18 12:11:12,053 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:11:12,053 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:11:12,054 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:11:12,054 INFO L82 PathProgramCache]: Analyzing trace with hash 601384290, now seen corresponding path program 1 times [2018-09-18 12:11:12,054 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:11:12,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:11:12,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:11:12,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:11:12,056 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:11:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:11:12,728 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:11:12,729 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:11:12,729 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-18 12:11:12,729 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:11:12,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-18 12:11:12,730 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-18 12:11:12,730 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-18 12:11:12,731 INFO L87 Difference]: Start difference. First operand 8270 states and 12214 transitions. Second operand 7 states. [2018-09-18 12:11:38,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:11:38,712 INFO L93 Difference]: Finished difference Result 24752 states and 42652 transitions. [2018-09-18 12:11:38,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-18 12:11:38,712 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2018-09-18 12:11:38,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:11:38,896 INFO L225 Difference]: With dead ends: 24752 [2018-09-18 12:11:38,896 INFO L226 Difference]: Without dead ends: 16488 [2018-09-18 12:11:38,979 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-18 12:11:38,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16488 states. [2018-09-18 12:11:39,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16488 to 16230. [2018-09-18 12:11:39,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16230 states. [2018-09-18 12:11:39,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16230 states to 16230 states and 25719 transitions. [2018-09-18 12:11:39,637 INFO L78 Accepts]: Start accepts. Automaton has 16230 states and 25719 transitions. Word has length 195 [2018-09-18 12:11:39,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:11:39,638 INFO L480 AbstractCegarLoop]: Abstraction has 16230 states and 25719 transitions. [2018-09-18 12:11:39,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-18 12:11:39,638 INFO L276 IsEmpty]: Start isEmpty. Operand 16230 states and 25719 transitions. [2018-09-18 12:11:39,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-09-18 12:11:39,654 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:11:39,654 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:11:39,655 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:11:39,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1927103323, now seen corresponding path program 1 times [2018-09-18 12:11:39,655 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:11:39,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:11:39,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:11:39,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:11:39,656 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:11:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:11:39,966 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:11:40,430 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 109 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 12:11:40,430 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:11:40,430 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:11:40,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:11:40,447 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:11:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:11:40,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:11:40,960 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:11:40,960 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:11:41,197 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:11:41,218 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:11:41,218 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 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:11:41,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:11:41,234 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:11:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:11:41,560 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:11:41,638 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-18 12:11:41,639 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:11:41,877 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-18 12:11:41,878 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-18 12:11:41,879 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-09-18 12:11:41,879 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:11:41,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:11:41,881 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:11:41,881 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:11:41,881 INFO L87 Difference]: Start difference. First operand 16230 states and 25719 transitions. Second operand 5 states. [2018-09-18 12:11:48,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:11:48,812 INFO L93 Difference]: Finished difference Result 38684 states and 62791 transitions. [2018-09-18 12:11:48,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 12:11:48,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2018-09-18 12:11:48,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:11:48,936 INFO L225 Difference]: With dead ends: 38684 [2018-09-18 12:11:48,936 INFO L226 Difference]: Without dead ends: 22460 [2018-09-18 12:11:48,997 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 866 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:11:49,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22460 states. [2018-09-18 12:11:49,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22460 to 22458. [2018-09-18 12:11:49,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22458 states. [2018-09-18 12:11:49,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22458 states to 22458 states and 31018 transitions. [2018-09-18 12:11:49,701 INFO L78 Accepts]: Start accepts. Automaton has 22458 states and 31018 transitions. Word has length 219 [2018-09-18 12:11:49,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:11:49,702 INFO L480 AbstractCegarLoop]: Abstraction has 22458 states and 31018 transitions. [2018-09-18 12:11:49,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:11:49,702 INFO L276 IsEmpty]: Start isEmpty. Operand 22458 states and 31018 transitions. [2018-09-18 12:11:49,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-09-18 12:11:49,712 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:11:49,712 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:11:49,713 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:11:49,714 INFO L82 PathProgramCache]: Analyzing trace with hash -452146073, now seen corresponding path program 1 times [2018-09-18 12:11:49,714 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:11:49,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:11:49,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:11:49,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:11:49,715 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:11:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:11:50,060 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:11:50,935 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 126 proven. 62 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-18 12:11:50,936 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:11:50,936 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:11:50,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:11:50,944 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:11:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:11:51,020 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:11:51,168 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-18 12:11:51,169 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:11:51,298 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-18 12:11:51,325 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 12:11:51,325 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-18 12:11:51,325 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:11:51,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:11:51,326 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:11:51,326 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:11:51,326 INFO L87 Difference]: Start difference. First operand 22458 states and 31018 transitions. Second operand 3 states. [2018-09-18 12:11:56,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:11:56,107 INFO L93 Difference]: Finished difference Result 45774 states and 63262 transitions. [2018-09-18 12:11:56,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:11:56,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2018-09-18 12:11:56,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:11:56,178 INFO L225 Difference]: With dead ends: 45774 [2018-09-18 12:11:56,178 INFO L226 Difference]: Without dead ends: 23322 [2018-09-18 12:11:56,251 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 472 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:11:56,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23322 states. [2018-09-18 12:11:56,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23322 to 22888. [2018-09-18 12:11:56,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22888 states. [2018-09-18 12:11:56,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22888 states to 22888 states and 29972 transitions. [2018-09-18 12:11:56,719 INFO L78 Accepts]: Start accepts. Automaton has 22888 states and 29972 transitions. Word has length 236 [2018-09-18 12:11:56,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:11:56,720 INFO L480 AbstractCegarLoop]: Abstraction has 22888 states and 29972 transitions. [2018-09-18 12:11:56,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:11:56,720 INFO L276 IsEmpty]: Start isEmpty. Operand 22888 states and 29972 transitions. [2018-09-18 12:11:56,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-09-18 12:11:56,731 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:11:56,731 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:11:56,731 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:11:56,731 INFO L82 PathProgramCache]: Analyzing trace with hash -684610887, now seen corresponding path program 1 times [2018-09-18 12:11:56,732 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:11:56,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:11:56,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:11:56,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:11:56,733 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:11:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:11:57,007 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 12:11:57,008 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:11:57,008 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 12:11:57,008 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:11:57,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:11:57,009 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:11:57,009 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:11:57,009 INFO L87 Difference]: Start difference. First operand 22888 states and 29972 transitions. Second operand 3 states. [2018-09-18 12:12:03,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:12:03,749 INFO L93 Difference]: Finished difference Result 63779 states and 85509 transitions. [2018-09-18 12:12:03,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:12:03,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 270 [2018-09-18 12:12:03,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:12:03,913 INFO L225 Difference]: With dead ends: 63779 [2018-09-18 12:12:03,913 INFO L226 Difference]: Without dead ends: 40897 [2018-09-18 12:12:03,996 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:12:04,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40897 states. [2018-09-18 12:12:04,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40897 to 40890. [2018-09-18 12:12:04,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40890 states. [2018-09-18 12:12:04,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40890 states to 40890 states and 53336 transitions. [2018-09-18 12:12:04,921 INFO L78 Accepts]: Start accepts. Automaton has 40890 states and 53336 transitions. Word has length 270 [2018-09-18 12:12:04,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:12:04,921 INFO L480 AbstractCegarLoop]: Abstraction has 40890 states and 53336 transitions. [2018-09-18 12:12:04,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:12:04,922 INFO L276 IsEmpty]: Start isEmpty. Operand 40890 states and 53336 transitions. [2018-09-18 12:12:04,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-09-18 12:12:04,946 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:12:04,947 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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 12:12:04,947 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:12:04,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1167961617, now seen corresponding path program 1 times [2018-09-18 12:12:04,947 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:12:04,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:12:04,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:12:04,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:12:04,949 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:12:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:12:05,307 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 172 proven. 142 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-18 12:12:05,308 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:12:05,308 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 12:12:05,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:12:05,321 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:12:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:12:05,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:12:05,613 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 262 proven. 2 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-09-18 12:12:05,614 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:12:07,145 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 172 proven. 211 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:12:07,185 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:12:07,185 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 12:12:07,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:12:07,218 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:12:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:12:07,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:12:07,819 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 262 proven. 2 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-09-18 12:12:07,819 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:12:08,407 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 172 proven. 211 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:12:08,409 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:12:08,409 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8, 7, 8] total 16 [2018-09-18 12:12:08,409 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:12:08,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-18 12:12:08,410 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-18 12:12:08,411 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2018-09-18 12:12:08,411 INFO L87 Difference]: Start difference. First operand 40890 states and 53336 transitions. Second operand 10 states. [2018-09-18 12:12:41,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:12:41,288 INFO L93 Difference]: Finished difference Result 126038 states and 175785 transitions. [2018-09-18 12:12:41,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-18 12:12:41,288 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 300 [2018-09-18 12:12:41,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:12:41,646 INFO L225 Difference]: With dead ends: 126038 [2018-09-18 12:12:41,646 INFO L226 Difference]: Without dead ends: 85154 [2018-09-18 12:12:42,071 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1220 GetRequests, 1194 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2018-09-18 12:12:42,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85154 states. [2018-09-18 12:12:43,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85154 to 84372. [2018-09-18 12:12:43,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84372 states. [2018-09-18 12:12:43,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84372 states to 84372 states and 111835 transitions. [2018-09-18 12:12:43,774 INFO L78 Accepts]: Start accepts. Automaton has 84372 states and 111835 transitions. Word has length 300 [2018-09-18 12:12:43,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:12:43,774 INFO L480 AbstractCegarLoop]: Abstraction has 84372 states and 111835 transitions. [2018-09-18 12:12:43,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-18 12:12:43,775 INFO L276 IsEmpty]: Start isEmpty. Operand 84372 states and 111835 transitions. [2018-09-18 12:12:43,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-09-18 12:12:43,808 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:12:43,808 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:12:43,808 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:12:43,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1864947812, now seen corresponding path program 1 times [2018-09-18 12:12:43,809 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:12:43,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:12:43,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:12:43,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:12:43,810 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:12:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:12:44,524 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 168 proven. 213 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-18 12:12:44,524 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:12:44,525 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:12:44,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:12:44,536 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:12:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:12:44,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-09-18 12:12:45,146 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-18 12:12:45,347 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:12:45,347 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 12:12:45,353 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 12:12:45,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:12:45 BoogieIcfgContainer [2018-09-18 12:12:45,353 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 12:12:45,355 INFO L168 Benchmark]: Toolchain (without parser) took 248178.09 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -259.8 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-09-18 12:12:45,356 INFO L168 Benchmark]: CDTParser took 0.23 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 12:12:45,356 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1748.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-09-18 12:12:45,357 INFO L168 Benchmark]: Boogie Procedure Inliner took 260.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-18 12:12:45,359 INFO L168 Benchmark]: Boogie Preprocessor took 882.76 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 940.6 MB). Free memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. [2018-09-18 12:12:45,360 INFO L168 Benchmark]: RCFGBuilder took 14776.62 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 460.8 MB). Peak memory consumption was 460.8 MB. Max. memory is 7.1 GB. [2018-09-18 12:12:45,361 INFO L168 Benchmark]: TraceAbstraction took 230502.41 ms. Allocated memory was 2.5 GB in the beginning and 3.3 GB in the end (delta: 801.6 MB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 210.2 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-09-18 12:12:45,366 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1748.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 260.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 882.76 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 940.6 MB). Free memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14776.62 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 460.8 MB). Peak memory consumption was 460.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230502.41 ms. Allocated memory was 2.5 GB in the beginning and 3.3 GB in the end (delta: 801.6 MB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 210.2 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 170]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 170). Cancelled while BasicCegarLoop was analyzing trace of length 323 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 10 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 230.4s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 181.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2800 SDtfs, 13275 SDslu, 2759 SDs, 0 SdLazy, 32040 SolverSat, 7113 SolverUnsat, 30 SolverUnknown, 0 SolverNotchecked, 166.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2899 GetRequests, 2811 SyntacticMatches, 21 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 36.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84372occurred in iteration=8, 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: 5.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 1583 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 40.1s InterpolantComputationTime, 3004 NumberOfCodeBlocks, 3004 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 4394 ConstructedInterpolants, 266 QuantifiedInterpolants, 4981209 SizeOfPredicates, 11 NumberOfNonLiveVariables, 2606 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 3159/3906 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label00_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_12-12-45-379.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label00_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_12-12-45-379.csv Completed graceful shutdown