java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:19:20,096 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:19:20,098 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:19:20,116 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:19:20,117 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:19:20,119 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:19:20,120 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:19:20,123 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:19:20,125 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:19:20,126 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:19:20,135 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:19:20,135 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:19:20,136 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:19:20,137 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:19:20,140 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:19:20,142 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:19:20,143 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:19:20,146 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:19:20,150 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:19:20,151 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:19:20,154 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:19:20,155 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:19:20,157 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 22:19:20,157 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 22:19:20,159 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 22:19:20,160 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 22:19:20,161 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 22:19:20,162 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 22:19:20,165 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 22:19:20,167 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 22:19:20,167 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 22:19:20,167 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 22:19:20,168 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 22:19:20,168 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 22:19:20,169 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 22:19:20,169 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 22:19:20,171 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 22:19:20,200 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:19:20,201 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:19:20,201 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:19:20,202 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:19:20,202 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:19:20,202 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:19:20,202 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:19:20,202 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:19:20,202 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:19:20,203 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:19:20,203 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:19:20,203 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:19:20,204 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:19:20,206 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:19:20,206 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:19:20,207 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:19:20,207 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:19:20,207 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:19:20,207 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:19:20,207 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:19:20,207 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:19:20,208 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:19:20,208 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:19:20,208 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:19:20,208 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:19:20,208 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:19:20,209 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:19:20,210 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:19:20,210 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:19:20,210 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:19:20,211 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:19:20,211 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:19:20,211 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:19:20,211 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:19:20,254 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:19:20,268 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:19:20,272 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:19:20,274 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:19:20,274 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:19:20,275 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label26_true-unreach-call.c [2018-10-24 22:19:20,355 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/624360175/5f0d319d9902495c8e3d634886e793ce/FLAG223b1a961 [2018-10-24 22:19:21,135 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:19:21,136 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label26_true-unreach-call.c [2018-10-24 22:19:21,163 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/624360175/5f0d319d9902495c8e3d634886e793ce/FLAG223b1a961 [2018-10-24 22:19:21,182 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/624360175/5f0d319d9902495c8e3d634886e793ce [2018-10-24 22:19:21,195 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:19:21,198 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:19:21,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:19:21,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:19:21,206 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:19:21,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:19:21" (1/1) ... [2018-10-24 22:19:21,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f49ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:21, skipping insertion in model container [2018-10-24 22:19:21,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:19:21" (1/1) ... [2018-10-24 22:19:21,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:19:21,375 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:19:22,516 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:19:22,521 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:19:22,943 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:19:22,974 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:19:22,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:22 WrapperNode [2018-10-24 22:19:22,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:19:22,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:19:22,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:19:22,976 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:19:22,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:22" (1/1) ... [2018-10-24 22:19:23,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:22" (1/1) ... [2018-10-24 22:19:23,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:19:23,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:19:23,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:19:23,400 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:19:23,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:22" (1/1) ... [2018-10-24 22:19:23,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:22" (1/1) ... [2018-10-24 22:19:23,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:22" (1/1) ... [2018-10-24 22:19:23,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:22" (1/1) ... [2018-10-24 22:19:23,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:22" (1/1) ... [2018-10-24 22:19:23,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:22" (1/1) ... [2018-10-24 22:19:23,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:22" (1/1) ... [2018-10-24 22:19:23,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:19:23,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:19:23,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:19:23,658 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:19:23,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 22:19:23,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:19:23,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:19:23,731 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 22:19:23,732 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 22:19:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:19:23,732 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:19:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:19:23,733 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:19:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:19:23,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:19:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:19:23,733 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:19:32,049 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:19:32,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:19:32 BoogieIcfgContainer [2018-10-24 22:19:32,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:19:32,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:19:32,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:19:32,055 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:19:32,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:19:21" (1/3) ... [2018-10-24 22:19:32,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4211429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:19:32, skipping insertion in model container [2018-10-24 22:19:32,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:22" (2/3) ... [2018-10-24 22:19:32,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4211429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:19:32, skipping insertion in model container [2018-10-24 22:19:32,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:19:32" (3/3) ... [2018-10-24 22:19:32,059 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label26_true-unreach-call.c [2018-10-24 22:19:32,069 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:19:32,079 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:19:32,098 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:19:32,145 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:19:32,145 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:19:32,145 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:19:32,146 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:19:32,146 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:19:32,146 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:19:32,146 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:19:32,146 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:19:32,189 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 22:19:32,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-24 22:19:32,202 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:19:32,203 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:19:32,205 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:19:32,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:19:32,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1427857313, now seen corresponding path program 1 times [2018-10-24 22:19:32,217 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:19:32,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:19:32,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:19:32,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:19:32,280 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:19:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:19:32,772 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:19:32,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:19:32,898 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:19:32,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:19:32,899 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:19:32,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:19:32,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:19:32,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:19:32,926 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-24 22:19:40,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:19:40,317 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-24 22:19:40,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:19:40,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-10-24 22:19:40,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:19:40,371 INFO L225 Difference]: With dead ends: 2251 [2018-10-24 22:19:40,372 INFO L226 Difference]: Without dead ends: 1474 [2018-10-24 22:19:40,389 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:19:40,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-24 22:19:40,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-24 22:19:40,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 22:19:40,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-10-24 22:19:40,582 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 69 [2018-10-24 22:19:40,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:19:40,582 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-10-24 22:19:40,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:19:40,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-10-24 22:19:40,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-24 22:19:40,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:19:40,592 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, 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] [2018-10-24 22:19:40,592 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:19:40,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:19:40,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1828983656, now seen corresponding path program 1 times [2018-10-24 22:19:40,593 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:19:40,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:19:40,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:19:40,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:19:40,594 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:19:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:19:40,912 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:19:40,963 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:19:40,964 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:19:40,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:19:40,964 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:19:40,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:19:40,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:19:40,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:19:40,967 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-10-24 22:19:51,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:19:51,116 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-10-24 22:19:51,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:19:51,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-10-24 22:19:51,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:19:51,138 INFO L225 Difference]: With dead ends: 4422 [2018-10-24 22:19:51,138 INFO L226 Difference]: Without dead ends: 2954 [2018-10-24 22:19:51,144 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:19:51,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-10-24 22:19:51,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-10-24 22:19:51,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-10-24 22:19:51,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5031 transitions. [2018-10-24 22:19:51,226 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5031 transitions. Word has length 143 [2018-10-24 22:19:51,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:19:51,226 INFO L481 AbstractCegarLoop]: Abstraction has 2928 states and 5031 transitions. [2018-10-24 22:19:51,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:19:51,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5031 transitions. [2018-10-24 22:19:51,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-24 22:19:51,231 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:19:51,231 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, 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] [2018-10-24 22:19:51,232 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:19:51,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:19:51,232 INFO L82 PathProgramCache]: Analyzing trace with hash -867833311, now seen corresponding path program 1 times [2018-10-24 22:19:51,232 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:19:51,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:19:51,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:19:51,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:19:51,234 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:19:51,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:19:51,597 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:19:51,597 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:19:51,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:19:51,598 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:19:51,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:19:51,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:19:51,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:19:51,599 INFO L87 Difference]: Start difference. First operand 2928 states and 5031 transitions. Second operand 5 states. [2018-10-24 22:20:02,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:20:02,569 INFO L93 Difference]: Finished difference Result 10270 states and 17665 transitions. [2018-10-24 22:20:02,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:20:02,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-10-24 22:20:02,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:20:02,610 INFO L225 Difference]: With dead ends: 10270 [2018-10-24 22:20:02,610 INFO L226 Difference]: Without dead ends: 7348 [2018-10-24 22:20:02,627 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:20:02,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7348 states. [2018-10-24 22:20:02,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7348 to 7270. [2018-10-24 22:20:02,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7270 states. [2018-10-24 22:20:02,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7270 states to 7270 states and 10826 transitions. [2018-10-24 22:20:02,882 INFO L78 Accepts]: Start accepts. Automaton has 7270 states and 10826 transitions. Word has length 146 [2018-10-24 22:20:02,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:20:02,882 INFO L481 AbstractCegarLoop]: Abstraction has 7270 states and 10826 transitions. [2018-10-24 22:20:02,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:20:02,883 INFO L276 IsEmpty]: Start isEmpty. Operand 7270 states and 10826 transitions. [2018-10-24 22:20:02,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-24 22:20:02,887 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:20:02,887 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:20:02,888 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:20:02,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:20:02,888 INFO L82 PathProgramCache]: Analyzing trace with hash -317879939, now seen corresponding path program 1 times [2018-10-24 22:20:02,888 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:20:02,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:02,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:20:02,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:02,890 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:20:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:20:03,098 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:20:03,098 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:20:03,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:20:03,099 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:20:03,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:20:03,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:20:03,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:20:03,100 INFO L87 Difference]: Start difference. First operand 7270 states and 10826 transitions. Second operand 4 states. [2018-10-24 22:20:09,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:20:09,901 INFO L93 Difference]: Finished difference Result 25200 states and 39401 transitions. [2018-10-24 22:20:09,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:20:09,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2018-10-24 22:20:09,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:20:09,996 INFO L225 Difference]: With dead ends: 25200 [2018-10-24 22:20:09,996 INFO L226 Difference]: Without dead ends: 17936 [2018-10-24 22:20:10,048 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:20:10,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17936 states. [2018-10-24 22:20:10,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17936 to 17931. [2018-10-24 22:20:10,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17931 states. [2018-10-24 22:20:10,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17931 states to 17931 states and 25605 transitions. [2018-10-24 22:20:10,512 INFO L78 Accepts]: Start accepts. Automaton has 17931 states and 25605 transitions. Word has length 176 [2018-10-24 22:20:10,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:20:10,513 INFO L481 AbstractCegarLoop]: Abstraction has 17931 states and 25605 transitions. [2018-10-24 22:20:10,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:20:10,513 INFO L276 IsEmpty]: Start isEmpty. Operand 17931 states and 25605 transitions. [2018-10-24 22:20:10,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-10-24 22:20:10,547 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:20:10,548 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, 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, 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] [2018-10-24 22:20:10,548 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:20:10,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:20:10,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1372356006, now seen corresponding path program 1 times [2018-10-24 22:20:10,550 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:20:10,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:10,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:20:10,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:10,552 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:20:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:20:10,913 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:20:11,249 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 186 proven. 191 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-10-24 22:20:11,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:20:11,250 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:20:11,251 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 404 with the following transitions: [2018-10-24 22:20:11,253 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2075], [2077], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2196], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2280], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2368], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:20:11,329 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:20:11,330 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:20:14,858 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:20:14,860 INFO L272 AbstractInterpreter]: Visited 139 different actions 139 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 22:20:14,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:20:14,875 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:20:18,150 INFO L232 lantSequenceWeakener]: Weakened 392 states. On average, predicates are now at 77.93% of their original sizes. [2018-10-24 22:20:18,150 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:20:18,700 INFO L413 sIntCurrentIteration]: We have 402 unified AI predicates [2018-10-24 22:20:18,700 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:20:18,701 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:20:18,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 22:20:18,702 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:20:18,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:20:18,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:20:18,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:20:18,704 INFO L87 Difference]: Start difference. First operand 17931 states and 25605 transitions. Second operand 7 states. [2018-10-24 22:20:20,903 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:22:06,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:22:06,081 INFO L93 Difference]: Finished difference Result 36561 states and 51963 transitions. [2018-10-24 22:22:06,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:22:06,081 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 403 [2018-10-24 22:22:06,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:22:06,145 INFO L225 Difference]: With dead ends: 36561 [2018-10-24 22:22:06,145 INFO L226 Difference]: Without dead ends: 18636 [2018-10-24 22:22:06,194 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 403 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:22:06,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18636 states. [2018-10-24 22:22:06,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18636 to 18634. [2018-10-24 22:22:06,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18634 states. [2018-10-24 22:22:06,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18634 states to 18634 states and 26320 transitions. [2018-10-24 22:22:06,601 INFO L78 Accepts]: Start accepts. Automaton has 18634 states and 26320 transitions. Word has length 403 [2018-10-24 22:22:06,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:22:06,602 INFO L481 AbstractCegarLoop]: Abstraction has 18634 states and 26320 transitions. [2018-10-24 22:22:06,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 22:22:06,602 INFO L276 IsEmpty]: Start isEmpty. Operand 18634 states and 26320 transitions. [2018-10-24 22:22:06,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2018-10-24 22:22:06,642 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:22:06,643 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-10-24 22:22:06,644 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:22:06,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:22:06,644 INFO L82 PathProgramCache]: Analyzing trace with hash 2000716113, now seen corresponding path program 1 times [2018-10-24 22:22:06,644 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:22:06,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:06,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:22:06,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:06,647 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:22:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:22:07,227 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:22:07,400 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:22:08,151 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 312 proven. 433 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-10-24 22:22:08,152 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:22:08,152 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:22:08,152 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 566 with the following transitions: [2018-10-24 22:22:08,154 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2075], [2077], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2196], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2268], [2269], [2273], [2277], [2280], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:22:08,167 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:22:08,167 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:22:18,217 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:22:18,218 INFO L272 AbstractInterpreter]: Visited 197 different actions 388 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 22:22:18,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:22:18,268 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:22:22,369 INFO L232 lantSequenceWeakener]: Weakened 269 states. On average, predicates are now at 78.08% of their original sizes. [2018-10-24 22:22:22,370 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:22:49,372 INFO L413 sIntCurrentIteration]: We have 564 unified AI predicates [2018-10-24 22:22:49,373 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:22:49,373 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:22:49,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-10-24 22:22:49,374 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:22:49,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 22:22:49,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 22:22:49,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2018-10-24 22:22:49,376 INFO L87 Difference]: Start difference. First operand 18634 states and 26320 transitions. Second operand 16 states. Received shutdown request... [2018-10-24 22:23:04,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 22:23:04,609 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:23:04,614 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:23:04,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:23:04 BoogieIcfgContainer [2018-10-24 22:23:04,614 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:23:04,615 INFO L168 Benchmark]: Toolchain (without parser) took 223418.60 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 22:23:04,616 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:23:04,617 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1775.86 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:23:04,617 INFO L168 Benchmark]: Boogie Procedure Inliner took 423.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -936.2 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:23:04,618 INFO L168 Benchmark]: Boogie Preprocessor took 258.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-10-24 22:23:04,619 INFO L168 Benchmark]: RCFGBuilder took 8392.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 501.5 MB). Peak memory consumption was 501.5 MB. Max. memory is 7.1 GB. [2018-10-24 22:23:04,620 INFO L168 Benchmark]: TraceAbstraction took 212563.15 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -955.1 MB). Peak memory consumption was 885.2 MB. Max. memory is 7.1 GB. [2018-10-24 22:23:04,625 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1775.86 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 423.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -936.2 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 258.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8392.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 501.5 MB). Peak memory consumption was 501.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212563.15 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -955.1 MB). Peak memory consumption was 885.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 195]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 195). Cancelled while BasicCegarLoop was constructing difference of abstraction (18634states) and FLOYD_HOARE automaton (currently 9 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (126 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 212.4s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 158.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1370 SDtfs, 9709 SDslu, 799 SDs, 0 SdLazy, 18358 SolverSat, 5533 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 106.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1000 GetRequests, 905 SyntacticMatches, 55 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 27.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18634occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9970294355927625 AbsIntWeakeningRatio, 0.07246376811594203 AbsIntAvgWeakeningVarsNumRemoved, 753.4989648033127 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 111 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1502 NumberOfCodeBlocks, 1502 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1496 ConstructedInterpolants, 0 QuantifiedInterpolants, 2629052 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 884/1508 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown