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/Problem13_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:31:29,106 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:31:29,108 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:31:29,120 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:31:29,120 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:31:29,121 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:31:29,122 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:31:29,124 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:31:29,126 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:31:29,127 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:31:29,129 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:31:29,129 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:31:29,130 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:31:29,131 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:31:29,133 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:31:29,133 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:31:29,134 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:31:29,136 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:31:29,138 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:31:29,140 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:31:29,141 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:31:29,142 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:31:29,145 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:31:29,145 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:31:29,145 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:31:29,146 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:31:29,148 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:31:29,148 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:31:29,149 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:31:29,150 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:31:29,151 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:31:29,151 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:31:29,152 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:31:29,152 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:31:29,153 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:31:29,154 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:31:29,154 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 17:31:29,176 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:31:29,176 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:31:29,177 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:31:29,177 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:31:29,177 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:31:29,177 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:31:29,178 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:31:29,178 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:31:29,178 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:31:29,178 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:31:29,178 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:31:29,179 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:31:29,179 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:31:29,179 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:31:29,180 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:31:29,180 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:31:29,180 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:31:29,180 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:31:29,180 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:31:29,181 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:31:29,181 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:31:29,181 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:31:29,181 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:31:29,181 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:31:29,182 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:31:29,182 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:31:29,182 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:31:29,182 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:31:29,182 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:31:29,183 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:31:29,183 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:31:29,183 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:31:29,183 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:31:29,226 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:31:29,240 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:31:29,246 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:31:29,248 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:31:29,248 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:31:29,249 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label22_true-unreach-call.c [2018-09-14 17:31:29,611 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bfd69a73/1d5499b1902a4ebd81c34415d6860f9d/FLAGaca40aed9 [2018-09-14 17:31:30,146 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:31:30,147 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label22_true-unreach-call.c [2018-09-14 17:31:30,189 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bfd69a73/1d5499b1902a4ebd81c34415d6860f9d/FLAGaca40aed9 [2018-09-14 17:31:30,215 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bfd69a73/1d5499b1902a4ebd81c34415d6860f9d [2018-09-14 17:31:30,228 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:31:30,232 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:31:30,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:31:30,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:31:30,244 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:31:30,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:31:30" (1/1) ... [2018-09-14 17:31:30,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ba51a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:31:30, skipping insertion in model container [2018-09-14 17:31:30,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:31:30" (1/1) ... [2018-09-14 17:31:30,264 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:31:31,727 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:31:31,749 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:31:32,430 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:31:32,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:31:32 WrapperNode [2018-09-14 17:31:32,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:31:32,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:31:32,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:31:32,851 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:31:32,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:31:32" (1/1) ... [2018-09-14 17:31:32,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:31:32" (1/1) ... [2018-09-14 17:31:33,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:31:33,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:31:33,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:31:33,194 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:31:34,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:31:32" (1/1) ... [2018-09-14 17:31:34,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:31:32" (1/1) ... [2018-09-14 17:31:34,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:31:32" (1/1) ... [2018-09-14 17:31:34,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:31:32" (1/1) ... [2018-09-14 17:31:34,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:31:32" (1/1) ... [2018-09-14 17:31:34,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:31:32" (1/1) ... [2018-09-14 17:31:34,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:31:32" (1/1) ... [2018-09-14 17:31:34,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:31:34,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:31:34,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:31:34,541 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:31:34,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:31:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:31:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:31:34,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:31:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:31:34,626 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:31:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:31:34,627 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:31:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:31:34,627 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:31:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:31:34,627 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:31:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:31:34,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:31:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:31:34,628 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:31:45,101 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:31:45,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:31:45 BoogieIcfgContainer [2018-09-14 17:31:45,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:31:45,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:31:45,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:31:45,107 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:31:45,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:31:30" (1/3) ... [2018-09-14 17:31:45,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb93562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:31:45, skipping insertion in model container [2018-09-14 17:31:45,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:31:32" (2/3) ... [2018-09-14 17:31:45,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb93562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:31:45, skipping insertion in model container [2018-09-14 17:31:45,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:31:45" (3/3) ... [2018-09-14 17:31:45,111 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label22_true-unreach-call.c [2018-09-14 17:31:45,123 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:31:45,135 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:31:45,225 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:31:45,226 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:31:45,226 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:31:45,226 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:31:45,226 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:31:45,227 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:31:45,227 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:31:45,227 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:31:45,227 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:31:45,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-14 17:31:45,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-14 17:31:45,301 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:31:45,302 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] [2018-09-14 17:31:45,303 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:31:45,310 INFO L82 PathProgramCache]: Analyzing trace with hash -380938253, now seen corresponding path program 1 times [2018-09-14 17:31:45,313 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:31:45,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:45,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:45,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:45,379 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:31:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:45,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:31:45,874 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:31:45,877 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:31:45,877 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:31:45,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:31:45,909 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:31:45,910 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:31:45,916 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-09-14 17:32:05,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:32:05,114 INFO L93 Difference]: Finished difference Result 4105 states and 7669 transitions. [2018-09-14 17:32:05,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:32:05,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-09-14 17:32:05,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:32:05,170 INFO L225 Difference]: With dead ends: 4105 [2018-09-14 17:32:05,170 INFO L226 Difference]: Without dead ends: 2979 [2018-09-14 17:32:05,182 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 [2018-09-14 17:32:05,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2018-09-14 17:32:05,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2849. [2018-09-14 17:32:05,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2018-09-14 17:32:05,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 5075 transitions. [2018-09-14 17:32:05,404 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 5075 transitions. Word has length 39 [2018-09-14 17:32:05,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:32:05,405 INFO L480 AbstractCegarLoop]: Abstraction has 2849 states and 5075 transitions. [2018-09-14 17:32:05,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:32:05,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 5075 transitions. [2018-09-14 17:32:05,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-14 17:32:05,420 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:32:05,421 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] [2018-09-14 17:32:05,421 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:32:05,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1766897295, now seen corresponding path program 1 times [2018-09-14 17:32:05,423 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:32:05,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:05,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:05,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:05,425 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:32:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:05,789 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:32:05,789 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:32:05,789 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:32:05,790 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:32:05,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:32:05,792 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:32:05,792 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:32:05,792 INFO L87 Difference]: Start difference. First operand 2849 states and 5075 transitions. Second operand 6 states. [2018-09-14 17:32:23,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:32:23,579 INFO L93 Difference]: Finished difference Result 10635 states and 19580 transitions. [2018-09-14 17:32:23,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:32:23,580 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-09-14 17:32:23,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:32:23,628 INFO L225 Difference]: With dead ends: 10635 [2018-09-14 17:32:23,628 INFO L226 Difference]: Without dead ends: 7792 [2018-09-14 17:32:23,647 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 [2018-09-14 17:32:23,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2018-09-14 17:32:23,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7729. [2018-09-14 17:32:23,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7729 states. [2018-09-14 17:32:23,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7729 states to 7729 states and 12373 transitions. [2018-09-14 17:32:23,866 INFO L78 Accepts]: Start accepts. Automaton has 7729 states and 12373 transitions. Word has length 110 [2018-09-14 17:32:23,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:32:23,866 INFO L480 AbstractCegarLoop]: Abstraction has 7729 states and 12373 transitions. [2018-09-14 17:32:23,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:32:23,867 INFO L276 IsEmpty]: Start isEmpty. Operand 7729 states and 12373 transitions. [2018-09-14 17:32:23,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-09-14 17:32:23,870 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:32:23,871 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] [2018-09-14 17:32:23,871 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:32:23,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1433958942, now seen corresponding path program 1 times [2018-09-14 17:32:23,871 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:32:23,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:23,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:23,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:23,873 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:32:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:24,119 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:32:24,120 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:32:24,120 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:32:24,120 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:32:24,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:32:24,121 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:32:24,121 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:32:24,122 INFO L87 Difference]: Start difference. First operand 7729 states and 12373 transitions. Second operand 6 states. [2018-09-14 17:32:42,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:32:42,275 INFO L93 Difference]: Finished difference Result 21334 states and 35505 transitions. [2018-09-14 17:32:42,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:32:42,276 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-09-14 17:32:42,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:32:42,346 INFO L225 Difference]: With dead ends: 21334 [2018-09-14 17:32:42,346 INFO L226 Difference]: Without dead ends: 13611 [2018-09-14 17:32:42,384 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 [2018-09-14 17:32:42,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13611 states. [2018-09-14 17:32:42,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13611 to 13533. [2018-09-14 17:32:42,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13533 states. [2018-09-14 17:32:42,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13533 states to 13533 states and 20794 transitions. [2018-09-14 17:32:42,721 INFO L78 Accepts]: Start accepts. Automaton has 13533 states and 20794 transitions. Word has length 113 [2018-09-14 17:32:42,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:32:42,721 INFO L480 AbstractCegarLoop]: Abstraction has 13533 states and 20794 transitions. [2018-09-14 17:32:42,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:32:42,722 INFO L276 IsEmpty]: Start isEmpty. Operand 13533 states and 20794 transitions. [2018-09-14 17:32:42,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-09-14 17:32:42,725 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:32:42,725 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] [2018-09-14 17:32:42,726 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:32:42,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1170956786, now seen corresponding path program 1 times [2018-09-14 17:32:42,726 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:32:42,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:42,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:42,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:42,728 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:32:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:32:43,042 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:32:43,042 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:32:43,043 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:32:43,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:32:43,043 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:32:43,044 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:32:43,044 INFO L87 Difference]: Start difference. First operand 13533 states and 20794 transitions. Second operand 5 states. [2018-09-14 17:32:57,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:32:57,019 INFO L93 Difference]: Finished difference Result 40056 states and 65129 transitions. [2018-09-14 17:32:57,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:32:57,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2018-09-14 17:32:57,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:32:57,125 INFO L225 Difference]: With dead ends: 40056 [2018-09-14 17:32:57,125 INFO L226 Difference]: Without dead ends: 26529 [2018-09-14 17:32:57,168 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:32:57,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26529 states. [2018-09-14 17:32:57,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26529 to 26229. [2018-09-14 17:32:57,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26229 states. [2018-09-14 17:32:57,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26229 states to 26229 states and 38611 transitions. [2018-09-14 17:32:57,803 INFO L78 Accepts]: Start accepts. Automaton has 26229 states and 38611 transitions. Word has length 123 [2018-09-14 17:32:57,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:32:57,803 INFO L480 AbstractCegarLoop]: Abstraction has 26229 states and 38611 transitions. [2018-09-14 17:32:57,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:32:57,804 INFO L276 IsEmpty]: Start isEmpty. Operand 26229 states and 38611 transitions. [2018-09-14 17:32:57,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-14 17:32:57,808 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:32:57,808 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] [2018-09-14 17:32:57,808 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:32:57,808 INFO L82 PathProgramCache]: Analyzing trace with hash 531830176, now seen corresponding path program 1 times [2018-09-14 17:32:57,809 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:32:57,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:57,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:57,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:57,811 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:32:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:58,109 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:32:58,667 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:32:58,668 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:32:58,668 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:32:58,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:58,688 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:32:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:58,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:32:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-14 17:32:59,132 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:32:59,489 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-14 17:32:59,509 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:32:59,510 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 11 [2018-09-14 17:32:59,510 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:32:59,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:32:59,511 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:32:59,511 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:32:59,512 INFO L87 Difference]: Start difference. First operand 26229 states and 38611 transitions. Second operand 4 states. [2018-09-14 17:33:11,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:33:11,932 INFO L93 Difference]: Finished difference Result 71968 states and 111300 transitions. [2018-09-14 17:33:11,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:33:11,933 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2018-09-14 17:33:11,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:33:12,178 INFO L225 Difference]: With dead ends: 71968 [2018-09-14 17:33:12,179 INFO L226 Difference]: Without dead ends: 45745 [2018-09-14 17:33:12,268 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:33:12,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45745 states. [2018-09-14 17:33:13,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45745 to 45738. [2018-09-14 17:33:13,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45738 states. [2018-09-14 17:33:13,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45738 states to 45738 states and 66980 transitions. [2018-09-14 17:33:13,300 INFO L78 Accepts]: Start accepts. Automaton has 45738 states and 66980 transitions. Word has length 140 [2018-09-14 17:33:13,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:33:13,301 INFO L480 AbstractCegarLoop]: Abstraction has 45738 states and 66980 transitions. [2018-09-14 17:33:13,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:33:13,301 INFO L276 IsEmpty]: Start isEmpty. Operand 45738 states and 66980 transitions. [2018-09-14 17:33:13,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-09-14 17:33:13,306 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:33:13,306 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] [2018-09-14 17:33:13,306 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:33:13,307 INFO L82 PathProgramCache]: Analyzing trace with hash 654163462, now seen corresponding path program 1 times [2018-09-14 17:33:13,307 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:33:13,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:13,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:13,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:13,308 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:33:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:13,583 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:33:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:33:13,622 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:33:13,622 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:33:13,622 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:33:13,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:33:13,623 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:33:13,623 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:33:13,624 INFO L87 Difference]: Start difference. First operand 45738 states and 66980 transitions. Second operand 6 states. [2018-09-14 17:33:26,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:33:26,183 INFO L93 Difference]: Finished difference Result 120180 states and 196802 transitions. [2018-09-14 17:33:26,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:33:26,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-09-14 17:33:26,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:33:26,585 INFO L225 Difference]: With dead ends: 120180 [2018-09-14 17:33:26,585 INFO L226 Difference]: Without dead ends: 74448 [2018-09-14 17:33:26,704 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 [2018-09-14 17:33:26,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74448 states. [2018-09-14 17:33:28,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74448 to 74270. [2018-09-14 17:33:28,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74270 states. [2018-09-14 17:33:28,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74270 states to 74270 states and 110948 transitions. [2018-09-14 17:33:28,414 INFO L78 Accepts]: Start accepts. Automaton has 74270 states and 110948 transitions. Word has length 149 [2018-09-14 17:33:28,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:33:28,414 INFO L480 AbstractCegarLoop]: Abstraction has 74270 states and 110948 transitions. [2018-09-14 17:33:28,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:33:28,414 INFO L276 IsEmpty]: Start isEmpty. Operand 74270 states and 110948 transitions. [2018-09-14 17:33:28,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-09-14 17:33:28,427 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:33:28,428 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:33:28,428 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:33:28,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1781143659, now seen corresponding path program 1 times [2018-09-14 17:33:28,428 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:33:28,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:28,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:28,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:28,430 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:33:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 113 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:33:28,695 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:33:28,695 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:33:28,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:28,704 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:33:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:28,791 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:33:29,419 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-09-14 17:33:29,419 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:33:29,500 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-14 17:33:29,522 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:33:29,522 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3] total 7 [2018-09-14 17:33:29,522 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:33:29,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:33:29,523 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:33:29,524 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-14 17:33:29,524 INFO L87 Difference]: Start difference. First operand 74270 states and 110948 transitions. Second operand 3 states. [2018-09-14 17:33:38,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:33:38,079 INFO L93 Difference]: Finished difference Result 171238 states and 262450 transitions. [2018-09-14 17:33:38,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:33:38,080 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 244 [2018-09-14 17:33:38,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:33:38,504 INFO L225 Difference]: With dead ends: 171238 [2018-09-14 17:33:38,505 INFO L226 Difference]: Without dead ends: 96974 [2018-09-14 17:33:38,707 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-14 17:33:38,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96974 states. [2018-09-14 17:33:40,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96974 to 95366. [2018-09-14 17:33:40,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95366 states. [2018-09-14 17:33:41,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95366 states to 95366 states and 137604 transitions. [2018-09-14 17:33:41,204 INFO L78 Accepts]: Start accepts. Automaton has 95366 states and 137604 transitions. Word has length 244 [2018-09-14 17:33:41,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:33:41,204 INFO L480 AbstractCegarLoop]: Abstraction has 95366 states and 137604 transitions. [2018-09-14 17:33:41,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:33:41,205 INFO L276 IsEmpty]: Start isEmpty. Operand 95366 states and 137604 transitions. [2018-09-14 17:33:41,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-09-14 17:33:41,217 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:33:41,217 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] [2018-09-14 17:33:41,217 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:33:41,218 INFO L82 PathProgramCache]: Analyzing trace with hash 576031913, now seen corresponding path program 1 times [2018-09-14 17:33:41,218 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:33:41,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:41,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:41,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:41,219 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:33:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:41,831 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:33:41,831 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:33:41,832 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:33:41,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:41,849 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:33:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:41,958 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:33:42,425 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:33:42,425 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:33:42,864 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:33:42,897 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:33:42,897 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:33:42,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:42,927 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:33:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:43,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:33:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-14 17:33:43,366 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:33:43,664 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-14 17:33:43,666 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-14 17:33:43,666 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 16 [2018-09-14 17:33:43,667 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:33:43,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:33:43,667 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:33:43,668 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-09-14 17:33:43,668 INFO L87 Difference]: Start difference. First operand 95366 states and 137604 transitions. Second operand 5 states. [2018-09-14 17:33:52,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:33:52,733 INFO L93 Difference]: Finished difference Result 197030 states and 285774 transitions. [2018-09-14 17:33:52,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:33:52,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 267 [2018-09-14 17:33:52,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:33:53,077 INFO L225 Difference]: With dead ends: 197030 [2018-09-14 17:33:53,077 INFO L226 Difference]: Without dead ends: 101670 [2018-09-14 17:33:53,233 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1073 GetRequests, 1057 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-09-14 17:33:53,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101670 states. [2018-09-14 17:33:56,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101670 to 101670. [2018-09-14 17:33:56,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101670 states. [2018-09-14 17:33:56,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101670 states to 101670 states and 140555 transitions. [2018-09-14 17:33:56,285 INFO L78 Accepts]: Start accepts. Automaton has 101670 states and 140555 transitions. Word has length 267 [2018-09-14 17:33:56,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:33:56,286 INFO L480 AbstractCegarLoop]: Abstraction has 101670 states and 140555 transitions. [2018-09-14 17:33:56,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:33:56,286 INFO L276 IsEmpty]: Start isEmpty. Operand 101670 states and 140555 transitions. [2018-09-14 17:33:56,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-09-14 17:33:56,301 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:33:56,301 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, 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] [2018-09-14 17:33:56,302 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:33:56,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1696717476, now seen corresponding path program 1 times [2018-09-14 17:33:56,302 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:33:56,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:56,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:56,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:56,303 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:33:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:56,802 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 244 proven. 71 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-14 17:33:56,802 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:33:56,802 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:33:56,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:56,811 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:33:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:56,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:33:57,371 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 98 proven. 4 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-09-14 17:33:57,371 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:33:58,103 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-09-14 17:33:58,124 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:33:58,125 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-14 17:33:58,125 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:33:58,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:33:58,125 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:33:58,126 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:33:58,126 INFO L87 Difference]: Start difference. First operand 101670 states and 140555 transitions. Second operand 5 states. [2018-09-14 17:34:11,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:34:11,167 INFO L93 Difference]: Finished difference Result 274037 states and 397341 transitions. [2018-09-14 17:34:11,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:34:11,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 285 [2018-09-14 17:34:11,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:34:11,680 INFO L225 Difference]: With dead ends: 274037 [2018-09-14 17:34:11,681 INFO L226 Difference]: Without dead ends: 172373 [2018-09-14 17:34:11,897 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 562 SyntacticMatches, 7 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:34:12,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172373 states. [2018-09-14 17:34:15,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172373 to 166174. [2018-09-14 17:34:15,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166174 states. [2018-09-14 17:34:15,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166174 states to 166174 states and 231754 transitions. [2018-09-14 17:34:15,993 INFO L78 Accepts]: Start accepts. Automaton has 166174 states and 231754 transitions. Word has length 285 [2018-09-14 17:34:15,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:34:15,994 INFO L480 AbstractCegarLoop]: Abstraction has 166174 states and 231754 transitions. [2018-09-14 17:34:15,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:34:15,994 INFO L276 IsEmpty]: Start isEmpty. Operand 166174 states and 231754 transitions. [2018-09-14 17:34:16,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-09-14 17:34:16,010 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:34:16,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:34:16,011 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:34:16,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1919077756, now seen corresponding path program 1 times [2018-09-14 17:34:16,012 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:34:16,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:16,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:16,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:16,013 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:34:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:16,298 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-09-14 17:34:16,298 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:34:16,299 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:34:16,299 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:34:16,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:34:16,299 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:34:16,300 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:34:16,300 INFO L87 Difference]: Start difference. First operand 166174 states and 231754 transitions. Second operand 4 states. [2018-09-14 17:34:33,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:34:33,791 INFO L93 Difference]: Finished difference Result 414538 states and 595934 transitions. [2018-09-14 17:34:33,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:34:33,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 302 [2018-09-14 17:34:33,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:34:34,612 INFO L225 Difference]: With dead ends: 414538 [2018-09-14 17:34:34,612 INFO L226 Difference]: Without dead ends: 242651 [2018-09-14 17:34:35,403 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 [2018-09-14 17:34:35,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242651 states. [2018-09-14 17:34:39,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242651 to 237756. [2018-09-14 17:34:39,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237756 states. [2018-09-14 17:34:39,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237756 states to 237756 states and 320296 transitions. [2018-09-14 17:34:39,788 INFO L78 Accepts]: Start accepts. Automaton has 237756 states and 320296 transitions. Word has length 302 [2018-09-14 17:34:39,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:34:39,789 INFO L480 AbstractCegarLoop]: Abstraction has 237756 states and 320296 transitions. [2018-09-14 17:34:39,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:34:39,789 INFO L276 IsEmpty]: Start isEmpty. Operand 237756 states and 320296 transitions. [2018-09-14 17:34:39,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-09-14 17:34:39,805 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:34:39,805 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, 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] [2018-09-14 17:34:39,805 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:34:39,806 INFO L82 PathProgramCache]: Analyzing trace with hash 64429177, now seen corresponding path program 1 times [2018-09-14 17:34:39,806 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:34:39,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:39,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:39,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:39,807 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:34:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:40,551 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 174 proven. 74 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-14 17:34:40,552 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:34:40,552 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:34:40,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:40,560 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:34:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:40,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:34:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-09-14 17:34:40,787 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:34:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 174 proven. 74 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-14 17:34:40,983 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:34:40,984 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:34:41,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:41,002 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:34:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:41,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:34:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 185 proven. 60 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 17:34:42,031 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:34:42,302 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 241 proven. 4 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 17:34:42,304 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:34:42,305 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6, 4, 4] total 19 [2018-09-14 17:34:42,305 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:34:42,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-14 17:34:42,306 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-14 17:34:42,306 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2018-09-14 17:34:42,307 INFO L87 Difference]: Start difference. First operand 237756 states and 320296 transitions. Second operand 12 states. Received shutdown request... [2018-09-14 17:35:14,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-14 17:35:14,983 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:35:14,989 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:35:14,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:35:14 BoogieIcfgContainer [2018-09-14 17:35:14,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:35:14,990 INFO L168 Benchmark]: Toolchain (without parser) took 224760.69 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-09-14 17:35:14,991 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. [2018-09-14 17:35:14,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2612.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:35:14,992 INFO L168 Benchmark]: Boogie Procedure Inliner took 343.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:35:14,993 INFO L168 Benchmark]: Boogie Preprocessor took 1346.74 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:35:14,994 INFO L168 Benchmark]: RCFGBuilder took 10561.61 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 178.8 MB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: -34.8 MB). Peak memory consumption was 766.9 MB. Max. memory is 7.1 GB. [2018-09-14 17:35:14,995 INFO L168 Benchmark]: TraceAbstraction took 209885.74 ms. Allocated memory was 2.7 GB in the beginning and 4.7 GB in the end (delta: 1.9 GB). Free memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: -84.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-09-14 17:35:15,001 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 2612.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 343.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1346.74 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10561.61 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 178.8 MB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: -34.8 MB). Peak memory consumption was 766.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209885.74 ms. Allocated memory was 2.7 GB in the beginning and 4.7 GB in the end (delta: 1.9 GB). Free memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: -84.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 108). Cancelled while BasicCegarLoop was constructing difference of abstraction (237756states) and FLOYD_HOARE automaton (currently 46 states, 12 states before enhancement), while ReachableStatesComputation was computing reachable states (348717 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 209.7s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 179.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7391 SDtfs, 49081 SDslu, 5578 SDs, 0 SdLazy, 68191 SolverSat, 19048 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 142.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3851 GetRequests, 3713 SyntacticMatches, 13 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=237756occurred in iteration=10, 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: 18.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 13458 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 3938 NumberOfCodeBlocks, 3938 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 5758 ConstructedInterpolants, 0 QuantifiedInterpolants, 4618967 SizeOfPredicates, 19 NumberOfNonLiveVariables, 3427 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 25 InterpolantComputations, 10 PerfectInterpolantSequences, 3973/4347 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/Problem13_label22_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-35-15-017.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label22_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-35-15-017.csv Completed graceful shutdown