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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 21:21:11,112 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 21:21:11,115 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 21:21:11,129 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 21:21:11,130 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 21:21:11,131 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 21:21:11,132 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 21:21:11,134 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 21:21:11,136 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 21:21:11,136 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 21:21:11,137 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 21:21:11,138 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 21:21:11,139 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 21:21:11,140 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 21:21:11,141 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 21:21:11,141 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 21:21:11,142 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 21:21:11,144 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 21:21:11,146 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 21:21:11,148 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 21:21:11,151 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 21:21:11,153 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 21:21:11,158 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 21:21:11,158 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 21:21:11,159 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 21:21:11,160 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 21:21:11,166 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 21:21:11,167 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 21:21:11,168 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 21:21:11,171 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 21:21:11,172 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 21:21:11,172 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 21:21:11,173 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 21:21:11,173 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 21:21:11,175 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 21:21:11,176 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 21:21:11,178 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 21:21:11,199 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 21:21:11,199 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 21:21:11,200 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 21:21:11,200 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 21:21:11,200 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 21:21:11,200 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 21:21:11,200 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 21:21:11,201 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 21:21:11,201 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 21:21:11,201 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 21:21:11,201 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 21:21:11,201 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 21:21:11,201 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 21:21:11,202 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 21:21:11,202 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 21:21:11,203 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 21:21:11,203 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 21:21:11,203 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 21:21:11,203 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 21:21:11,203 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 21:21:11,204 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 21:21:11,204 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 21:21:11,204 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 21:21:11,204 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 21:21:11,204 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 21:21:11,204 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:21:11,205 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 21:21:11,205 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 21:21:11,205 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 21:21:11,205 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 21:21:11,205 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 21:21:11,206 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 21:21:11,206 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 21:21:11,206 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 21:21:11,206 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 21:21:11,254 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 21:21:11,271 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 21:21:11,275 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 21:21:11,278 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 21:21:11,278 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 21:21:11,279 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label16_true-unreach-call.c [2018-11-07 21:21:11,349 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/259303103/341ffc2ea13b4098a50eeabe6e396352/FLAG0ee2012c1 [2018-11-07 21:21:12,290 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 21:21:12,291 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label16_true-unreach-call.c [2018-11-07 21:21:12,353 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/259303103/341ffc2ea13b4098a50eeabe6e396352/FLAG0ee2012c1 [2018-11-07 21:21:12,369 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/259303103/341ffc2ea13b4098a50eeabe6e396352 [2018-11-07 21:21:12,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 21:21:12,383 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 21:21:12,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 21:21:12,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 21:21:12,388 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 21:21:12,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:21:12" (1/1) ... [2018-11-07 21:21:12,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60fab143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:12, skipping insertion in model container [2018-11-07 21:21:12,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:21:12" (1/1) ... [2018-11-07 21:21:12,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 21:21:12,637 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 21:21:14,736 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:21:14,741 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 21:21:16,022 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:21:16,079 INFO L193 MainTranslator]: Completed translation [2018-11-07 21:21:16,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:16 WrapperNode [2018-11-07 21:21:16,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 21:21:16,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 21:21:16,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 21:21:16,082 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 21:21:16,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:16" (1/1) ... [2018-11-07 21:21:16,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:16" (1/1) ... [2018-11-07 21:21:16,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 21:21:16,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 21:21:16,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 21:21:16,655 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 21:21:16,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:16" (1/1) ... [2018-11-07 21:21:16,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:16" (1/1) ... [2018-11-07 21:21:16,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:16" (1/1) ... [2018-11-07 21:21:16,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:16" (1/1) ... [2018-11-07 21:21:16,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:16" (1/1) ... [2018-11-07 21:21:16,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:16" (1/1) ... [2018-11-07 21:21:17,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:16" (1/1) ... [2018-11-07 21:21:17,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 21:21:17,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 21:21:17,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 21:21:17,197 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 21:21:17,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:16" (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 [2018-11-07 21:21:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 21:21:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 21:21:17,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 21:21:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 21:21:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 21:21:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 21:21:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 21:21:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 21:21:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 21:21:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 21:21:17,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 21:21:17,268 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 21:21:17,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 21:21:17,269 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 21:21:17,269 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 21:21:17,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 21:21:17,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 21:21:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 21:21:17,270 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 21:21:32,212 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 21:21:32,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:21:32 BoogieIcfgContainer [2018-11-07 21:21:32,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 21:21:32,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 21:21:32,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 21:21:32,217 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 21:21:32,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:21:12" (1/3) ... [2018-11-07 21:21:32,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee3c13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:21:32, skipping insertion in model container [2018-11-07 21:21:32,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:21:16" (2/3) ... [2018-11-07 21:21:32,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee3c13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:21:32, skipping insertion in model container [2018-11-07 21:21:32,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:21:32" (3/3) ... [2018-11-07 21:21:32,221 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label16_true-unreach-call.c [2018-11-07 21:21:32,231 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 21:21:32,242 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 21:21:32,259 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 21:21:32,310 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 21:21:32,310 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 21:21:32,310 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 21:21:32,310 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 21:21:32,310 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 21:21:32,311 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 21:21:32,311 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 21:21:32,311 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 21:21:32,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 21:21:32,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-07 21:21:32,374 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:21:32,375 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:21:32,378 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:21:32,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:21:32,384 INFO L82 PathProgramCache]: Analyzing trace with hash -370651844, now seen corresponding path program 1 times [2018-11-07 21:21:32,387 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:21:32,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:21:32,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:21:32,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:21:32,439 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:21:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:21:32,947 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-07 21:21:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:21:32,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:21:32,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:21:32,988 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:21:32,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:21:33,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:21:33,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:21:33,033 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-11-07 21:21:53,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:21:53,545 INFO L93 Difference]: Finished difference Result 6513 states and 12383 transitions. [2018-11-07 21:21:53,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:21:53,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-11-07 21:21:53,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:21:53,726 INFO L225 Difference]: With dead ends: 6513 [2018-11-07 21:21:53,727 INFO L226 Difference]: Without dead ends: 4729 [2018-11-07 21:21:53,746 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:21:53,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4729 states. [2018-11-07 21:21:53,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 4693. [2018-11-07 21:21:53,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2018-11-07 21:21:53,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 7735 transitions. [2018-11-07 21:21:53,967 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 7735 transitions. Word has length 60 [2018-11-07 21:21:53,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:21:53,968 INFO L480 AbstractCegarLoop]: Abstraction has 4693 states and 7735 transitions. [2018-11-07 21:21:53,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:21:53,969 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 7735 transitions. [2018-11-07 21:21:53,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 21:21:53,977 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:21:53,977 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:21:53,978 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:21:53,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:21:53,978 INFO L82 PathProgramCache]: Analyzing trace with hash 784651985, now seen corresponding path program 1 times [2018-11-07 21:21:53,978 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:21:53,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:21:53,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:21:53,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:21:53,980 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:21:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:21:54,341 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:21:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:21:54,766 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:21:54,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:21:54,766 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:21:54,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:21:54,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:21:54,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:21:54,770 INFO L87 Difference]: Start difference. First operand 4693 states and 7735 transitions. Second operand 6 states. [2018-11-07 21:22:19,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:22:19,392 INFO L93 Difference]: Finished difference Result 17886 states and 30173 transitions. [2018-11-07 21:22:19,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:22:19,396 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-11-07 21:22:19,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:22:19,470 INFO L225 Difference]: With dead ends: 17886 [2018-11-07 21:22:19,470 INFO L226 Difference]: Without dead ends: 13199 [2018-11-07 21:22:19,491 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 21:22:19,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13199 states. [2018-11-07 21:22:19,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13199 to 13130. [2018-11-07 21:22:19,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13130 states. [2018-11-07 21:22:19,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13130 states to 13130 states and 19368 transitions. [2018-11-07 21:22:19,865 INFO L78 Accepts]: Start accepts. Automaton has 13130 states and 19368 transitions. Word has length 132 [2018-11-07 21:22:19,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:22:19,866 INFO L480 AbstractCegarLoop]: Abstraction has 13130 states and 19368 transitions. [2018-11-07 21:22:19,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:22:19,867 INFO L276 IsEmpty]: Start isEmpty. Operand 13130 states and 19368 transitions. [2018-11-07 21:22:19,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-11-07 21:22:19,872 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:22:19,872 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:22:19,873 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:22:19,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:22:19,873 INFO L82 PathProgramCache]: Analyzing trace with hash -184474481, now seen corresponding path program 1 times [2018-11-07 21:22:19,873 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:22:19,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:22:19,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:22:19,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:22:19,875 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:22:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:22:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:22:20,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:22:20,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:22:20,274 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:22:20,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:22:20,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:22:20,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:22:20,275 INFO L87 Difference]: Start difference. First operand 13130 states and 19368 transitions. Second operand 6 states. [2018-11-07 21:22:35,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:22:35,605 INFO L93 Difference]: Finished difference Result 39926 states and 60287 transitions. [2018-11-07 21:22:35,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 21:22:35,611 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-11-07 21:22:35,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:22:35,711 INFO L225 Difference]: With dead ends: 39926 [2018-11-07 21:22:35,711 INFO L226 Difference]: Without dead ends: 26802 [2018-11-07 21:22:35,749 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 21:22:35,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26802 states. [2018-11-07 21:22:36,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26802 to 26541. [2018-11-07 21:22:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26541 states. [2018-11-07 21:22:36,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26541 states to 26541 states and 38641 transitions. [2018-11-07 21:22:36,406 INFO L78 Accepts]: Start accepts. Automaton has 26541 states and 38641 transitions. Word has length 142 [2018-11-07 21:22:36,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:22:36,407 INFO L480 AbstractCegarLoop]: Abstraction has 26541 states and 38641 transitions. [2018-11-07 21:22:36,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:22:36,407 INFO L276 IsEmpty]: Start isEmpty. Operand 26541 states and 38641 transitions. [2018-11-07 21:22:36,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-11-07 21:22:36,411 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:22:36,412 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:22:36,412 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:22:36,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:22:36,412 INFO L82 PathProgramCache]: Analyzing trace with hash 739388191, now seen corresponding path program 1 times [2018-11-07 21:22:36,413 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:22:36,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:22:36,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:22:36,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:22:36,418 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:22:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:22:36,738 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:22:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:22:37,128 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:22:37,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:22:37,128 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:22:37,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:22:37,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:22:37,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:22:37,130 INFO L87 Difference]: Start difference. First operand 26541 states and 38641 transitions. Second operand 6 states. [2018-11-07 21:22:57,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:22:57,131 INFO L93 Difference]: Finished difference Result 70545 states and 106719 transitions. [2018-11-07 21:22:57,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:22:57,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2018-11-07 21:22:57,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:22:57,282 INFO L225 Difference]: With dead ends: 70545 [2018-11-07 21:22:57,283 INFO L226 Difference]: Without dead ends: 44010 [2018-11-07 21:22:57,342 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 21:22:57,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44010 states. [2018-11-07 21:22:58,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44010 to 43859. [2018-11-07 21:22:58,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43859 states. [2018-11-07 21:22:58,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43859 states to 43859 states and 61102 transitions. [2018-11-07 21:22:58,247 INFO L78 Accepts]: Start accepts. Automaton has 43859 states and 61102 transitions. Word has length 175 [2018-11-07 21:22:58,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:22:58,247 INFO L480 AbstractCegarLoop]: Abstraction has 43859 states and 61102 transitions. [2018-11-07 21:22:58,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:22:58,248 INFO L276 IsEmpty]: Start isEmpty. Operand 43859 states and 61102 transitions. [2018-11-07 21:22:58,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-11-07 21:22:58,258 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:22:58,258 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-11-07 21:22:58,259 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:22:58,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:22:58,259 INFO L82 PathProgramCache]: Analyzing trace with hash 2050066253, now seen corresponding path program 1 times [2018-11-07 21:22:58,259 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:22:58,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:22:58,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:22:58,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:22:58,262 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:22:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:22:58,599 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:22:59,033 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 159 proven. 134 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-11-07 21:22:59,034 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:22:59,034 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:22:59,036 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 286 with the following transitions: [2018-11-07 21:22:59,039 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5606], [5608], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5749], [5750], [5754], [5758], [5762], [5766], [5769], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 21:22:59,094 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:22:59,094 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:22:59,526 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:22:59,529 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 21:22:59,572 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:22:59,572 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:23:00,276 INFO L227 lantSequenceWeakener]: Weakened 271 states. On average, predicates are now at 75.6% of their original sizes. [2018-11-07 21:23:00,276 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:23:00,635 INFO L415 sIntCurrentIteration]: We unified 284 AI predicates to 284 [2018-11-07 21:23:00,635 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:23:00,637 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:23:00,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 21:23:00,637 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:23:00,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 21:23:00,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 21:23:00,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:23:00,639 INFO L87 Difference]: Start difference. First operand 43859 states and 61102 transitions. Second operand 7 states. [2018-11-07 21:23:06,948 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:24:32,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:24:32,925 INFO L93 Difference]: Finished difference Result 89104 states and 123914 transitions. [2018-11-07 21:24:32,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:24:32,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 285 [2018-11-07 21:24:32,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:24:33,053 INFO L225 Difference]: With dead ends: 89104 [2018-11-07 21:24:33,054 INFO L226 Difference]: Without dead ends: 45251 [2018-11-07 21:24:33,114 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 285 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:24:33,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45251 states. [2018-11-07 21:24:33,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45251 to 45249. [2018-11-07 21:24:33,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45249 states. [2018-11-07 21:24:33,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45249 states to 45249 states and 62508 transitions. [2018-11-07 21:24:33,816 INFO L78 Accepts]: Start accepts. Automaton has 45249 states and 62508 transitions. Word has length 285 [2018-11-07 21:24:33,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:24:33,816 INFO L480 AbstractCegarLoop]: Abstraction has 45249 states and 62508 transitions. [2018-11-07 21:24:33,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 21:24:33,819 INFO L276 IsEmpty]: Start isEmpty. Operand 45249 states and 62508 transitions. [2018-11-07 21:24:33,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-11-07 21:24:33,832 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:24:33,834 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:24:33,834 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:24:33,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:24:33,834 INFO L82 PathProgramCache]: Analyzing trace with hash 551885043, now seen corresponding path program 1 times [2018-11-07 21:24:33,835 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:24:33,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:24:33,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:24:33,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:24:33,836 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:24:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:24:35,599 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 165 proven. 136 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 21:24:35,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:24:35,600 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:24:35,600 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 447 with the following transitions: [2018-11-07 21:24:35,604 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5606], [5608], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5749], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6421], [6425], [6429], [6440], [6444], [6455], [6459], [6463], [6467], [6471], [6475], [6486], [6490], [6494], [6498], [6502], [6506], [6510], [6514], [6525], [6529], [6533], [6537], [6541], [6545], [6549], [6553], [6557], [6560], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 21:24:35,622 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:24:35,622 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:24:36,178 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:24:36,178 INFO L272 AbstractInterpreter]: Visited 249 different actions 491 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 21:24:36,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:24:36,214 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... [2018-11-07 21:24:37,189 INFO L227 lantSequenceWeakener]: Weakened 116 states. On average, predicates are now at 76.01% of their original sizes. [2018-11-07 21:24:37,189 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:24:37,242 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:24:37,246 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:24:37,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:24:37 BoogieIcfgContainer [2018-11-07 21:24:37,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:24:37,248 INFO L168 Benchmark]: Toolchain (without parser) took 204866.53 ms. Allocated memory was 1.5 GB in the beginning and 5.8 GB in the end (delta: 4.2 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -840.4 MB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2018-11-07 21:24:37,249 INFO L168 Benchmark]: CDTParser took 0.26 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. [2018-11-07 21:24:37,250 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3696.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 986.7 MB in the end (delta: 403.3 MB). Peak memory consumption was 403.3 MB. Max. memory is 7.1 GB. [2018-11-07 21:24:37,251 INFO L168 Benchmark]: Boogie Procedure Inliner took 573.04 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 846.7 MB). Free memory was 986.7 MB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2018-11-07 21:24:37,252 INFO L168 Benchmark]: Boogie Preprocessor took 541.93 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. [2018-11-07 21:24:37,252 INFO L168 Benchmark]: RCFGBuilder took 15016.25 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 157.3 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 497.8 MB). Peak memory consumption was 667.9 MB. Max. memory is 7.1 GB. [2018-11-07 21:24:37,253 INFO L168 Benchmark]: TraceAbstraction took 185033.20 ms. Allocated memory was 2.5 GB in the beginning and 5.8 GB in the end (delta: 3.2 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -501.8 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-11-07 21:24:37,259 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 3696.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 986.7 MB in the end (delta: 403.3 MB). Peak memory consumption was 403.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 573.04 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 846.7 MB). Free memory was 986.7 MB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 541.93 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15016.25 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 157.3 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 497.8 MB). Peak memory consumption was 667.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 185033.20 ms. Allocated memory was 2.5 GB in the beginning and 5.8 GB in the end (delta: 3.2 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -501.8 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 175]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 175). Cancelled while BasicCegarLoop was analyzing trace of length 447 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 3 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 184.9s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 173.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4947 SDtfs, 27112 SDslu, 4058 SDs, 0 SdLazy, 48565 SolverSat, 9817 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 109.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 322 GetRequests, 290 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45249occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9979158917859935 AbsIntWeakeningRatio, 0.09327846364883402 AbsIntAvgWeakeningVarsNumRemoved, 10.780521262002743 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 5 MinimizatonAttempts, 519 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 794 NumberOfCodeBlocks, 794 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 789 ConstructedInterpolants, 0 QuantifiedInterpolants, 486559 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 398/532 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown