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/Problem17_label49_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:16:56,127 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:16:56,130 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:16:56,147 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:16:56,148 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:16:56,149 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:16:56,150 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:16:56,154 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:16:56,155 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:16:56,157 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:16:56,158 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:16:56,160 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:16:56,161 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:16:56,162 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:16:56,164 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:16:56,166 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:16:56,167 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:16:56,176 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:16:56,178 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:16:56,179 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:16:56,183 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:16:56,185 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:16:56,188 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:16:56,190 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:16:56,190 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:16:56,191 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:16:56,192 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:16:56,192 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:16:56,196 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:16:56,199 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:16:56,200 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:16:56,200 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 00:16:56,201 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:16:56,201 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:16:56,204 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:16:56,205 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:16:56,205 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 [2018-10-27 00:16:56,230 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:16:56,230 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:16:56,231 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:16:56,231 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:16:56,231 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:16:56,232 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:16:56,232 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:16:56,232 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:16:56,232 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 00:16:56,232 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:16:56,232 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:16:56,233 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:16:56,233 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:16:56,234 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:16:56,234 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:16:56,234 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:16:56,234 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:16:56,234 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:16:56,234 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:16:56,235 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:16:56,235 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:16:56,235 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:16:56,235 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:16:56,235 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:16:56,236 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:16:56,236 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:16:56,236 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:16:56,236 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:16:56,236 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:16:56,237 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:16:56,237 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:16:56,237 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:16:56,237 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 00:16:56,237 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 00:16:56,285 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:16:56,303 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:16:56,307 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:16:56,310 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:16:56,310 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:16:56,311 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label49_false-unreach-call.c [2018-10-27 00:16:56,391 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/645468767/c02b34e050524b869fd0945ae59f0291/FLAG5e5cfac61 [2018-10-27 00:16:57,174 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:16:57,175 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label49_false-unreach-call.c [2018-10-27 00:16:57,203 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/645468767/c02b34e050524b869fd0945ae59f0291/FLAG5e5cfac61 [2018-10-27 00:16:57,219 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/645468767/c02b34e050524b869fd0945ae59f0291 [2018-10-27 00:16:57,232 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:16:57,234 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:16:57,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:16:57,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:16:57,239 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:16:57,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:16:57" (1/1) ... [2018-10-27 00:16:57,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1074adb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:57, skipping insertion in model container [2018-10-27 00:16:57,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:16:57" (1/1) ... [2018-10-27 00:16:57,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:16:57,357 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:16:58,331 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:16:58,335 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:16:58,772 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:16:58,796 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:16:58,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:58 WrapperNode [2018-10-27 00:16:58,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:16:58,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:16:58,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:16:58,798 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:16:58,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:58" (1/1) ... [2018-10-27 00:16:58,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:58" (1/1) ... [2018-10-27 00:16:59,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:16:59,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:16:59,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:16:59,294 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:16:59,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:58" (1/1) ... [2018-10-27 00:16:59,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:58" (1/1) ... [2018-10-27 00:16:59,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:58" (1/1) ... [2018-10-27 00:16:59,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:58" (1/1) ... [2018-10-27 00:16:59,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:58" (1/1) ... [2018-10-27 00:16:59,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:58" (1/1) ... [2018-10-27 00:16:59,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:58" (1/1) ... [2018-10-27 00:16:59,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:16:59,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:16:59,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:16:59,646 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:16:59,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:58" (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 [2018-10-27 00:16:59,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:16:59,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:16:59,721 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 00:16:59,721 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 00:16:59,721 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 00:16:59,722 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 00:16:59,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:16:59,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:16:59,722 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:16:59,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:17:13,052 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:17:13,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:17:13 BoogieIcfgContainer [2018-10-27 00:17:13,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:17:13,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:17:13,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:17:13,062 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:17:13,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:16:57" (1/3) ... [2018-10-27 00:17:13,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75329286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:17:13, skipping insertion in model container [2018-10-27 00:17:13,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:58" (2/3) ... [2018-10-27 00:17:13,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75329286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:17:13, skipping insertion in model container [2018-10-27 00:17:13,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:17:13" (3/3) ... [2018-10-27 00:17:13,068 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label49_false-unreach-call.c [2018-10-27 00:17:13,080 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:17:13,091 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:17:13,110 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:17:13,160 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:17:13,161 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:17:13,161 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:17:13,161 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:17:13,161 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:17:13,161 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:17:13,162 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:17:13,162 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:17:13,208 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 00:17:13,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-27 00:17:13,224 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:17:13,225 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] [2018-10-27 00:17:13,228 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:17:13,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:17:13,238 INFO L82 PathProgramCache]: Analyzing trace with hash -549765852, now seen corresponding path program 1 times [2018-10-27 00:17:13,241 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:17:13,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:17:13,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:17:13,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:17:13,301 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:17:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:17:13,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:17:13,694 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:17:13,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:17:13,695 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:17:13,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:17:13,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:17:13,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:17:13,724 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 00:17:26,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:17:26,698 INFO L93 Difference]: Finished difference Result 2166 states and 4013 transitions. [2018-10-27 00:17:26,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:17:26,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-10-27 00:17:26,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:17:26,749 INFO L225 Difference]: With dead ends: 2166 [2018-10-27 00:17:26,749 INFO L226 Difference]: Without dead ends: 1556 [2018-10-27 00:17:26,761 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:17:26,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2018-10-27 00:17:26,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1068. [2018-10-27 00:17:26,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-10-27 00:17:26,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1850 transitions. [2018-10-27 00:17:26,905 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1850 transitions. Word has length 22 [2018-10-27 00:17:26,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:17:26,906 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1850 transitions. [2018-10-27 00:17:26,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:17:26,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1850 transitions. [2018-10-27 00:17:26,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-27 00:17:26,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:17:26,912 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:17:26,912 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:17:26,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:17:26,913 INFO L82 PathProgramCache]: Analyzing trace with hash -157307670, now seen corresponding path program 1 times [2018-10-27 00:17:26,913 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:17:26,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:17:26,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:17:26,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:17:26,914 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:17:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:17:27,405 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:17:27,406 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:17:27,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:17:27,406 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:17:27,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:17:27,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:17:27,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:17:27,409 INFO L87 Difference]: Start difference. First operand 1068 states and 1850 transitions. Second operand 6 states. [2018-10-27 00:17:35,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:17:35,955 INFO L93 Difference]: Finished difference Result 3059 states and 5419 transitions. [2018-10-27 00:17:35,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:17:35,958 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2018-10-27 00:17:35,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:17:35,972 INFO L225 Difference]: With dead ends: 3059 [2018-10-27 00:17:35,972 INFO L226 Difference]: Without dead ends: 1997 [2018-10-27 00:17:35,977 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:17:35,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2018-10-27 00:17:36,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1975. [2018-10-27 00:17:36,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2018-10-27 00:17:36,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3181 transitions. [2018-10-27 00:17:36,043 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3181 transitions. Word has length 98 [2018-10-27 00:17:36,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:17:36,044 INFO L481 AbstractCegarLoop]: Abstraction has 1975 states and 3181 transitions. [2018-10-27 00:17:36,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:17:36,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3181 transitions. [2018-10-27 00:17:36,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-27 00:17:36,049 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:17:36,049 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:17:36,049 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:17:36,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:17:36,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1941736734, now seen corresponding path program 1 times [2018-10-27 00:17:36,050 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:17:36,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:17:36,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:17:36,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:17:36,052 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:17:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:17:36,396 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:17:36,597 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:17:36,597 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:17:36,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:17:36,598 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:17:36,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:17:36,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:17:36,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:17:36,599 INFO L87 Difference]: Start difference. First operand 1975 states and 3181 transitions. Second operand 6 states. [2018-10-27 00:17:43,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:17:43,232 INFO L93 Difference]: Finished difference Result 4880 states and 7834 transitions. [2018-10-27 00:17:43,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:17:43,233 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-10-27 00:17:43,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:17:43,250 INFO L225 Difference]: With dead ends: 4880 [2018-10-27 00:17:43,251 INFO L226 Difference]: Without dead ends: 2911 [2018-10-27 00:17:43,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:17:43,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-10-27 00:17:43,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2880. [2018-10-27 00:17:43,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-10-27 00:17:43,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3936 transitions. [2018-10-27 00:17:43,353 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3936 transitions. Word has length 102 [2018-10-27 00:17:43,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:17:43,354 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 3936 transitions. [2018-10-27 00:17:43,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:17:43,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3936 transitions. [2018-10-27 00:17:43,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-27 00:17:43,364 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:17:43,364 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:17:43,365 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:17:43,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:17:43,366 INFO L82 PathProgramCache]: Analyzing trace with hash 927500415, now seen corresponding path program 1 times [2018-10-27 00:17:43,366 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:17:43,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:17:43,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:17:43,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:17:43,368 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:17:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:17:43,594 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:17:43,594 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:17:43,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:17:43,595 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:17:43,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:17:43,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:17:43,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:17:43,596 INFO L87 Difference]: Start difference. First operand 2880 states and 3936 transitions. Second operand 4 states. [2018-10-27 00:17:49,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:17:49,492 INFO L93 Difference]: Finished difference Result 5754 states and 7882 transitions. [2018-10-27 00:17:49,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:17:49,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2018-10-27 00:17:49,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:17:49,509 INFO L225 Difference]: With dead ends: 5754 [2018-10-27 00:17:49,510 INFO L226 Difference]: Without dead ends: 2880 [2018-10-27 00:17:49,522 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 [2018-10-27 00:17:49,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2018-10-27 00:17:49,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2880. [2018-10-27 00:17:49,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-10-27 00:17:49,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3720 transitions. [2018-10-27 00:17:49,606 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3720 transitions. Word has length 132 [2018-10-27 00:17:49,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:17:49,608 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 3720 transitions. [2018-10-27 00:17:49,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:17:49,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3720 transitions. [2018-10-27 00:17:49,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-27 00:17:49,611 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:17:49,611 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:17:49,612 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:17:49,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:17:49,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1417902568, now seen corresponding path program 1 times [2018-10-27 00:17:49,612 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:17:49,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:17:49,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:17:49,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:17:49,614 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:17:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:17:50,280 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-27 00:17:50,281 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:17:50,281 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:17:50,282 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 187 with the following transitions: [2018-10-27 00:17:50,288 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [786], [788], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1227], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 00:17:50,395 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:17:50,396 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:17:52,463 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:18:33,339 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 00:18:33,340 INFO L272 AbstractInterpreter]: Visited 97 different actions 556 times. Merged at 7 different actions 32 times. Widened at 1 different actions 1 times. Found 5 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 00:18:33,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:18:33,385 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 00:18:33,385 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:18:33,385 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 00:18:33,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:18:33,419 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 00:18:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:18:33,530 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:18:33,902 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-10-27 00:18:34,312 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-27 00:18:34,313 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 00:18:34,736 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-27 00:18:35,506 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2018-10-27 00:18:35,980 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 35 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:18:36,014 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 00:18:36,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 16 [2018-10-27 00:18:36,014 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 00:18:36,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 00:18:36,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 00:18:36,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2018-10-27 00:18:36,017 INFO L87 Difference]: Start difference. First operand 2880 states and 3720 transitions. Second operand 10 states. Received shutdown request... [2018-10-27 00:21:10,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 00:21:10,356 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:21:10,362 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:21:10,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:21:10 BoogieIcfgContainer [2018-10-27 00:21:10,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:21:10,363 INFO L168 Benchmark]: Toolchain (without parser) took 253131.03 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -761.8 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-27 00:21:10,365 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-27 00:21:10,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1562.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-27 00:21:10,367 INFO L168 Benchmark]: Boogie Procedure Inliner took 495.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -915.8 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-27 00:21:10,368 INFO L168 Benchmark]: Boogie Preprocessor took 352.38 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: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2018-10-27 00:21:10,369 INFO L168 Benchmark]: RCFGBuilder took 13411.03 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: 452.9 MB). Peak memory consumption was 452.9 MB. Max. memory is 7.1 GB. [2018-10-27 00:21:10,370 INFO L168 Benchmark]: TraceAbstraction took 237304.18 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -465.1 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-27 00:21:10,376 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1562.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 495.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -915.8 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 352.38 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: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13411.03 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: 452.9 MB). Peak memory consumption was 452.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237304.18 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -465.1 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 53). Cancelled while BasicCegarLoop was constructing difference of abstraction (2880states) and FLOYD_HOARE automaton (currently 15 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (9361 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 237.2s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 188.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1672 SDtfs, 9921 SDslu, 1766 SDs, 0 SdLazy, 19062 SolverSat, 3555 SolverUnsat, 63 SolverUnknown, 0 SolverNotchecked, 182.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 418 GetRequests, 376 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2880occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 43.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 541 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 726 NumberOfCodeBlocks, 726 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 905 ConstructedInterpolants, 93 QuantifiedInterpolants, 923916 SizeOfPredicates, 2 NumberOfNonLiveVariables, 378 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 288/363 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown