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/Problem19_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 12:29:42,148 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 12:29:42,150 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 12:29:42,169 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 12:29:42,169 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 12:29:42,171 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 12:29:42,172 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 12:29:42,174 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 12:29:42,177 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 12:29:42,178 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 12:29:42,185 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 12:29:42,186 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 12:29:42,187 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 12:29:42,191 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 12:29:42,192 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 12:29:42,193 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 12:29:42,198 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 12:29:42,200 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 12:29:42,207 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 12:29:42,209 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 12:29:42,210 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 12:29:42,214 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 12:29:42,216 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 12:29:42,216 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 12:29:42,219 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 12:29:42,220 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 12:29:42,221 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 12:29:42,222 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 12:29:42,223 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 12:29:42,224 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 12:29:42,224 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 12:29:42,225 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 12:29:42,225 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 12:29:42,225 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 12:29:42,226 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 12:29:42,227 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 12:29:42,227 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 12:29:42,242 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 12:29:42,242 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 12:29:42,243 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 12:29:42,243 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 12:29:42,243 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 12:29:42,244 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 12:29:42,244 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 12:29:42,244 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 12:29:42,244 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 12:29:42,244 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 12:29:42,245 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 12:29:42,245 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 12:29:42,246 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 12:29:42,246 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 12:29:42,246 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 12:29:42,246 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 12:29:42,246 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 12:29:42,247 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 12:29:42,247 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 12:29:42,247 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 12:29:42,247 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 12:29:42,247 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 12:29:42,248 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 12:29:42,248 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 12:29:42,248 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:29:42,248 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 12:29:42,249 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 12:29:42,249 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 12:29:42,249 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 12:29:42,249 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 12:29:42,249 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 12:29:42,250 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 12:29:42,250 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 12:29:42,250 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 12:29:42,298 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 12:29:42,311 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 12:29:42,318 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 12:29:42,319 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 12:29:42,320 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 12:29:42,321 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label12_true-unreach-call.c [2018-09-18 12:29:42,685 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76123d028/27513d1ef47742dd8971c6d69dc194ea/FLAGb5593502d [2018-09-18 12:29:43,330 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 12:29:43,331 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label12_true-unreach-call.c [2018-09-18 12:29:43,386 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76123d028/27513d1ef47742dd8971c6d69dc194ea/FLAGb5593502d [2018-09-18 12:29:43,406 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76123d028/27513d1ef47742dd8971c6d69dc194ea [2018-09-18 12:29:43,420 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 12:29:43,423 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 12:29:43,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 12:29:43,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 12:29:43,434 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 12:29:43,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:29:43" (1/1) ... [2018-09-18 12:29:43,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c166ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:43, skipping insertion in model container [2018-09-18 12:29:43,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:29:43" (1/1) ... [2018-09-18 12:29:43,453 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 12:29:45,394 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:29:45,415 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 12:29:46,448 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:29:47,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:47 WrapperNode [2018-09-18 12:29:47,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 12:29:47,100 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 12:29:47,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 12:29:47,100 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 12:29:47,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:47" (1/1) ... [2018-09-18 12:29:47,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:47" (1/1) ... [2018-09-18 12:29:47,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 12:29:47,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 12:29:47,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 12:29:47,392 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 12:29:48,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:47" (1/1) ... [2018-09-18 12:29:48,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:47" (1/1) ... [2018-09-18 12:29:48,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:47" (1/1) ... [2018-09-18 12:29:48,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:47" (1/1) ... [2018-09-18 12:29:48,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:47" (1/1) ... [2018-09-18 12:29:48,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:47" (1/1) ... [2018-09-18 12:29:49,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:47" (1/1) ... [2018-09-18 12:29:49,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 12:29:49,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 12:29:49,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 12:29:49,198 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 12:29:49,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:47" (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 12:29:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 12:29:49,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 12:29:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-09-18 12:29:49,264 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-09-18 12:29:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-09-18 12:29:49,265 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-09-18 12:29:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 12:29:49,265 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 12:29:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 12:29:49,265 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 12:29:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 12:29:49,266 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 12:29:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 12:29:49,266 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 12:29:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 12:29:49,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 12:29:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 12:29:49,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 12:30:07,987 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 12:30:07,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:30:07 BoogieIcfgContainer [2018-09-18 12:30:07,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 12:30:07,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 12:30:07,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 12:30:07,992 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 12:30:07,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:29:43" (1/3) ... [2018-09-18 12:30:07,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c0abac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:30:07, skipping insertion in model container [2018-09-18 12:30:07,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:29:47" (2/3) ... [2018-09-18 12:30:07,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c0abac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:30:07, skipping insertion in model container [2018-09-18 12:30:07,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:30:07" (3/3) ... [2018-09-18 12:30:07,996 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label12_true-unreach-call.c [2018-09-18 12:30:08,006 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 12:30:08,016 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 12:30:08,090 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 12:30:08,091 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 12:30:08,091 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 12:30:08,091 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 12:30:08,091 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 12:30:08,091 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 12:30:08,091 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 12:30:08,092 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 12:30:08,092 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 12:30:08,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-09-18 12:30:08,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-18 12:30:08,165 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:30:08,167 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:30:08,168 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:30:08,174 INFO L82 PathProgramCache]: Analyzing trace with hash -21535606, now seen corresponding path program 1 times [2018-09-18 12:30:08,177 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:30:08,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:30:08,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:30:08,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:30:08,232 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:30:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:30:08,649 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:30:08,780 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 12:30:08,782 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:30:08,783 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 12:30:08,783 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:30:08,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:30:08,804 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:30:08,805 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:30:08,808 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-09-18 12:30:28,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:30:28,109 INFO L93 Difference]: Finished difference Result 5034 states and 9499 transitions. [2018-09-18 12:30:28,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:30:28,111 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2018-09-18 12:30:28,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:30:28,166 INFO L225 Difference]: With dead ends: 5034 [2018-09-18 12:30:28,167 INFO L226 Difference]: Without dead ends: 3254 [2018-09-18 12:30:28,181 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:30:28,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2018-09-18 12:30:28,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3207. [2018-09-18 12:30:28,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3207 states. [2018-09-18 12:30:28,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 5994 transitions. [2018-09-18 12:30:28,403 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 5994 transitions. Word has length 51 [2018-09-18 12:30:28,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:30:28,404 INFO L480 AbstractCegarLoop]: Abstraction has 3207 states and 5994 transitions. [2018-09-18 12:30:28,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:30:28,404 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 5994 transitions. [2018-09-18 12:30:28,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-18 12:30:28,420 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:30:28,421 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, 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] [2018-09-18 12:30:28,421 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:30:28,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1031778886, now seen corresponding path program 1 times [2018-09-18 12:30:28,422 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:30:28,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:30:28,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:30:28,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:30:28,424 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:30:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:30:29,014 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:30:29,014 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:30:29,015 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:30:29,015 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:30:29,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:30:29,017 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:30:29,019 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:30:29,019 INFO L87 Difference]: Start difference. First operand 3207 states and 5994 transitions. Second operand 6 states. [2018-09-18 12:30:58,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:30:58,737 INFO L93 Difference]: Finished difference Result 9590 states and 17980 transitions. [2018-09-18 12:30:58,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-18 12:30:58,738 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-09-18 12:30:58,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:30:58,778 INFO L225 Difference]: With dead ends: 9590 [2018-09-18 12:30:58,778 INFO L226 Difference]: Without dead ends: 6389 [2018-09-18 12:30:58,789 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:30:58,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6389 states. [2018-09-18 12:30:58,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6389 to 6281. [2018-09-18 12:30:58,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6281 states. [2018-09-18 12:30:58,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 11310 transitions. [2018-09-18 12:30:58,970 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 11310 transitions. Word has length 124 [2018-09-18 12:30:58,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:30:58,970 INFO L480 AbstractCegarLoop]: Abstraction has 6281 states and 11310 transitions. [2018-09-18 12:30:58,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:30:58,971 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 11310 transitions. [2018-09-18 12:30:58,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-18 12:30:58,974 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:30:58,974 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:30:58,974 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:30:58,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1387877847, now seen corresponding path program 1 times [2018-09-18 12:30:58,975 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:30:58,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:30:58,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:30:58,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:30:58,976 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:30:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:30:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:30:59,232 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:30:59,232 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 12:30:59,232 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:30:59,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:30:59,233 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:30:59,233 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 12:30:59,234 INFO L87 Difference]: Start difference. First operand 6281 states and 11310 transitions. Second operand 5 states. [2018-09-18 12:31:31,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:31:31,578 INFO L93 Difference]: Finished difference Result 18963 states and 34370 transitions. [2018-09-18 12:31:31,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:31:31,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2018-09-18 12:31:31,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:31:31,653 INFO L225 Difference]: With dead ends: 18963 [2018-09-18 12:31:31,653 INFO L226 Difference]: Without dead ends: 12688 [2018-09-18 12:31:31,682 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:31:31,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12688 states. [2018-09-18 12:31:32,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12688 to 12416. [2018-09-18 12:31:32,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12416 states. [2018-09-18 12:31:32,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12416 states to 12416 states and 18931 transitions. [2018-09-18 12:31:32,038 INFO L78 Accepts]: Start accepts. Automaton has 12416 states and 18931 transitions. Word has length 138 [2018-09-18 12:31:32,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:31:32,039 INFO L480 AbstractCegarLoop]: Abstraction has 12416 states and 18931 transitions. [2018-09-18 12:31:32,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:31:32,040 INFO L276 IsEmpty]: Start isEmpty. Operand 12416 states and 18931 transitions. [2018-09-18 12:31:32,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-09-18 12:31:32,048 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:31:32,048 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:31:32,049 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:31:32,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1906021503, now seen corresponding path program 1 times [2018-09-18 12:31:32,049 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:31:32,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:31:32,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:31:32,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:31:32,052 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:31:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:31:32,477 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 88 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:31:32,477 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:31:32,477 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 12:31:32,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:31:32,486 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:31:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:31:32,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:31:32,860 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-18 12:31:32,860 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:31:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 88 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:31:33,734 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:31:33,734 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-18 12:31:33,735 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:31:33,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:31:33,736 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:31:33,736 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:31:33,736 INFO L87 Difference]: Start difference. First operand 12416 states and 18931 transitions. Second operand 5 states. [2018-09-18 12:31:59,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:31:59,751 INFO L93 Difference]: Finished difference Result 40263 states and 63120 transitions. [2018-09-18 12:31:59,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:31:59,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2018-09-18 12:31:59,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:31:59,885 INFO L225 Difference]: With dead ends: 40263 [2018-09-18 12:31:59,886 INFO L226 Difference]: Without dead ends: 27853 [2018-09-18 12:31:59,932 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 454 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:31:59,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27853 states. [2018-09-18 12:32:00,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27853 to 26965. [2018-09-18 12:32:00,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26965 states. [2018-09-18 12:32:00,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26965 states to 26965 states and 38048 transitions. [2018-09-18 12:32:00,675 INFO L78 Accepts]: Start accepts. Automaton has 26965 states and 38048 transitions. Word has length 228 [2018-09-18 12:32:00,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:32:00,676 INFO L480 AbstractCegarLoop]: Abstraction has 26965 states and 38048 transitions. [2018-09-18 12:32:00,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:32:00,676 INFO L276 IsEmpty]: Start isEmpty. Operand 26965 states and 38048 transitions. [2018-09-18 12:32:00,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-09-18 12:32:00,683 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:32:00,683 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:32:00,684 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:32:00,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1638818871, now seen corresponding path program 1 times [2018-09-18 12:32:00,684 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:32:00,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:32:00,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:32:00,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:32:00,686 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:32:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:32:01,019 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:32:01,549 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 88 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:32:01,550 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:32:01,550 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 12:32:01,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:32:01,565 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:32:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:32:01,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:32:02,196 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-18 12:32:02,196 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:32:03,335 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 88 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:32:03,366 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:32:03,367 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 12:32:03,367 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:32:03,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:32:03,368 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:32:03,368 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:32:03,369 INFO L87 Difference]: Start difference. First operand 26965 states and 38048 transitions. Second operand 5 states. [2018-09-18 12:32:31,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:32:31,358 INFO L93 Difference]: Finished difference Result 75867 states and 112578 transitions. [2018-09-18 12:32:31,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:32:31,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2018-09-18 12:32:31,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:32:31,541 INFO L225 Difference]: With dead ends: 75867 [2018-09-18 12:32:31,541 INFO L226 Difference]: Without dead ends: 48908 [2018-09-18 12:32:31,628 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 619 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-18 12:32:31,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48908 states. [2018-09-18 12:32:32,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48908 to 47940. [2018-09-18 12:32:32,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47940 states. [2018-09-18 12:32:32,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47940 states to 47940 states and 68512 transitions. [2018-09-18 12:32:32,703 INFO L78 Accepts]: Start accepts. Automaton has 47940 states and 68512 transitions. Word has length 312 [2018-09-18 12:32:32,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:32:32,703 INFO L480 AbstractCegarLoop]: Abstraction has 47940 states and 68512 transitions. [2018-09-18 12:32:32,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:32:32,704 INFO L276 IsEmpty]: Start isEmpty. Operand 47940 states and 68512 transitions. [2018-09-18 12:32:32,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2018-09-18 12:32:32,725 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:32:32,726 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:32:32,726 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:32:32,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1079006793, now seen corresponding path program 1 times [2018-09-18 12:32:32,727 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:32:32,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:32:32,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:32:32,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:32:32,728 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:32:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:32:34,072 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 300 proven. 95 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-18 12:32:34,073 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:32:34,073 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:32:34,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:32:34,083 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:32:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:32:34,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:32:34,486 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 442 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-18 12:32:34,486 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:32:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 300 proven. 95 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-18 12:32:34,828 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:32:34,829 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:32:34,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:32:34,848 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:32:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:32:35,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:32:35,449 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 442 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-18 12:32:35,449 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:32:35,715 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 300 proven. 95 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-18 12:32:35,717 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:32:35,718 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 12:32:35,718 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:32:35,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:32:35,721 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:32:35,721 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:32:35,721 INFO L87 Difference]: Start difference. First operand 47940 states and 68512 transitions. Second operand 9 states. [2018-09-18 12:33:15,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:33:15,098 INFO L93 Difference]: Finished difference Result 195328 states and 345721 transitions. [2018-09-18 12:33:15,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-18 12:33:15,099 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 536 [2018-09-18 12:33:15,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:33:15,851 INFO L225 Difference]: With dead ends: 195328 [2018-09-18 12:33:15,851 INFO L226 Difference]: Without dead ends: 136102 [2018-09-18 12:33:16,227 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2164 GetRequests, 2142 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2018-09-18 12:33:16,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136102 states. [2018-09-18 12:33:19,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136102 to 134696. [2018-09-18 12:33:19,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134696 states. [2018-09-18 12:33:19,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134696 states to 134696 states and 192667 transitions. [2018-09-18 12:33:19,923 INFO L78 Accepts]: Start accepts. Automaton has 134696 states and 192667 transitions. Word has length 536 [2018-09-18 12:33:19,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:33:19,923 INFO L480 AbstractCegarLoop]: Abstraction has 134696 states and 192667 transitions. [2018-09-18 12:33:19,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:33:19,923 INFO L276 IsEmpty]: Start isEmpty. Operand 134696 states and 192667 transitions. [2018-09-18 12:33:20,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2018-09-18 12:33:20,019 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:33:20,020 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:33:20,020 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:33:20,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1767991365, now seen corresponding path program 1 times [2018-09-18 12:33:20,021 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:33:20,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:33:20,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:33:20,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:33:20,022 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:33:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:33:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 284 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:33:22,131 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:33:22,131 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 12:33:22,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:33:22,139 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:33:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:33:22,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:33:22,794 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2018-09-18 12:33:22,794 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:33:23,175 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2018-09-18 12:33:23,196 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 12:33:23,196 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-09-18 12:33:23,196 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:33:23,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:33:23,197 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:33:23,198 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-18 12:33:23,198 INFO L87 Difference]: Start difference. First operand 134696 states and 192667 transitions. Second operand 3 states. [2018-09-18 12:33:35,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:33:35,965 INFO L93 Difference]: Finished difference Result 312332 states and 468100 transitions. [2018-09-18 12:33:35,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:33:35,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 878 [2018-09-18 12:33:35,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:33:36,516 INFO L225 Difference]: With dead ends: 312332 [2018-09-18 12:33:36,517 INFO L226 Difference]: Without dead ends: 177642 [2018-09-18 12:33:36,830 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1761 GetRequests, 1755 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-18 12:33:36,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177642 states. Received shutdown request... [2018-09-18 12:33:37,630 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 12:33:37,635 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 12:33:37,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:33:37 BoogieIcfgContainer [2018-09-18 12:33:37,635 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 12:33:37,636 INFO L168 Benchmark]: Toolchain (without parser) took 234215.63 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: -48.2 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-09-18 12:33:37,637 INFO L168 Benchmark]: CDTParser took 0.22 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 12:33:37,638 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3674.89 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 229.1 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -159.8 MB). Peak memory consumption was 490.4 MB. Max. memory is 7.1 GB. [2018-09-18 12:33:37,639 INFO L168 Benchmark]: Boogie Procedure Inliner took 291.56 ms. Allocated memory is still 1.8 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 64.6 MB). Peak memory consumption was 64.6 MB. Max. memory is 7.1 GB. [2018-09-18 12:33:37,640 INFO L168 Benchmark]: Boogie Preprocessor took 1805.22 ms. Allocated memory was 1.8 GB in the beginning and 2.5 GB in the end (delta: 799.0 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -811.7 MB). Peak memory consumption was 125.6 MB. Max. memory is 7.1 GB. [2018-09-18 12:33:37,640 INFO L168 Benchmark]: RCFGBuilder took 18790.45 ms. Allocated memory was 2.5 GB in the beginning and 2.9 GB in the end (delta: 329.3 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 60.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-09-18 12:33:37,641 INFO L168 Benchmark]: TraceAbstraction took 209646.77 ms. Allocated memory was 2.9 GB in the beginning and 3.5 GB in the end (delta: 635.4 MB). Free memory was 2.2 GB in the beginning and 1.4 GB in the end (delta: 798.3 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-09-18 12:33:37,648 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 3674.89 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 229.1 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -159.8 MB). Peak memory consumption was 490.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 291.56 ms. Allocated memory is still 1.8 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 64.6 MB). Peak memory consumption was 64.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1805.22 ms. Allocated memory was 1.8 GB in the beginning and 2.5 GB in the end (delta: 799.0 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -811.7 MB). Peak memory consumption was 125.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18790.45 ms. Allocated memory was 2.5 GB in the beginning and 2.9 GB in the end (delta: 329.3 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 60.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * TraceAbstraction took 209646.77 ms. Allocated memory was 2.9 GB in the beginning and 3.5 GB in the end (delta: 635.4 MB). Free memory was 2.2 GB in the beginning and 1.4 GB in the end (delta: 798.3 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 148]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 148). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 209.5s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 190.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6565 SDtfs, 41851 SDslu, 5251 SDs, 0 SdLazy, 65303 SolverSat, 19532 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 161.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5048 GetRequests, 4979 SyntacticMatches, 10 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134696occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 3689 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 4757 NumberOfCodeBlocks, 4757 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 7230 ConstructedInterpolants, 0 QuantifiedInterpolants, 8426832 SizeOfPredicates, 2 NumberOfNonLiveVariables, 3693 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 3831/4468 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/Problem19_label12_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_12-33-37-663.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label12_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_12-33-37-663.csv Completed graceful shutdown