java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:42:35,156 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:42:35,159 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:42:35,177 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:42:35,178 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:42:35,179 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:42:35,180 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:42:35,182 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:42:35,184 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:42:35,184 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:42:35,185 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:42:35,186 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:42:35,187 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:42:35,188 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:42:35,189 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:42:35,189 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:42:35,190 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:42:35,192 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:42:35,194 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:42:35,196 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:42:35,197 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:42:35,198 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:42:35,201 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:42:35,201 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:42:35,202 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:42:35,202 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:42:35,204 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:42:35,205 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:42:35,206 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:42:35,207 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:42:35,207 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:42:35,208 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:42:35,208 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:42:35,208 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:42:35,209 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:42:35,210 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:42:35,210 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 15:42:35,226 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:42:35,226 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:42:35,227 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:42:35,227 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:42:35,228 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:42:35,228 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:42:35,228 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:42:35,228 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:42:35,228 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:42:35,229 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:42:35,229 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:42:35,229 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:42:35,230 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:42:35,230 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:42:35,230 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:42:35,230 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:42:35,230 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:42:35,231 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:42:35,231 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:42:35,231 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:42:35,231 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:42:35,231 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:42:35,232 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:42:35,232 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:42:35,232 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:42:35,232 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:42:35,232 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:42:35,233 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:42:35,233 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:42:35,233 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:42:35,233 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:42:35,233 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:42:35,234 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:42:35,234 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:42:35,276 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:42:35,288 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:42:35,291 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:42:35,293 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:42:35,293 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:42:35,294 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label26_true-unreach-call.c [2018-11-07 15:42:35,350 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f778be4fe/96346581252542b7986b0e8ddcae7668/FLAG23fe7fcad [2018-11-07 15:42:36,108 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:42:36,109 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label26_true-unreach-call.c [2018-11-07 15:42:36,144 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f778be4fe/96346581252542b7986b0e8ddcae7668/FLAG23fe7fcad [2018-11-07 15:42:36,164 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f778be4fe/96346581252542b7986b0e8ddcae7668 [2018-11-07 15:42:36,178 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:42:36,181 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:42:36,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:42:36,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:42:36,189 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:42:36,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:42:36" (1/1) ... [2018-11-07 15:42:36,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388d2da8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:36, skipping insertion in model container [2018-11-07 15:42:36,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:42:36" (1/1) ... [2018-11-07 15:42:36,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:42:36,348 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:42:37,346 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:42:37,351 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:42:37,825 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:42:37,855 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:42:37,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:37 WrapperNode [2018-11-07 15:42:37,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:42:37,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:42:37,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:42:37,858 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:42:37,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:37" (1/1) ... [2018-11-07 15:42:38,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:37" (1/1) ... [2018-11-07 15:42:38,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:42:38,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:42:38,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:42:38,135 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:42:38,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:37" (1/1) ... [2018-11-07 15:42:38,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:37" (1/1) ... [2018-11-07 15:42:38,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:37" (1/1) ... [2018-11-07 15:42:38,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:37" (1/1) ... [2018-11-07 15:42:38,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:37" (1/1) ... [2018-11-07 15:42:38,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:37" (1/1) ... [2018-11-07 15:42:38,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:37" (1/1) ... [2018-11-07 15:42:38,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:42:38,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:42:38,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:42:38,352 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:42:38,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:42:38,431 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:42:38,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:42:38,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:42:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 15:42:38,432 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 15:42:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:42:38,433 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:42:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:42:38,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:42:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:42:38,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:42:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:42:38,436 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:42:47,520 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:42:47,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:42:47 BoogieIcfgContainer [2018-11-07 15:42:47,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:42:47,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:42:47,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:42:47,526 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:42:47,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:42:36" (1/3) ... [2018-11-07 15:42:47,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3818b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:42:47, skipping insertion in model container [2018-11-07 15:42:47,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:37" (2/3) ... [2018-11-07 15:42:47,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3818b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:42:47, skipping insertion in model container [2018-11-07 15:42:47,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:42:47" (3/3) ... [2018-11-07 15:42:47,530 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label26_true-unreach-call.c [2018-11-07 15:42:47,540 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:42:47,548 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:42:47,563 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:42:47,607 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:42:47,607 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:42:47,607 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:42:47,608 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:42:47,608 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:42:47,608 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:42:47,608 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:42:47,608 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:42:47,646 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 15:42:47,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-07 15:42:47,657 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:42:47,658 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] [2018-11-07 15:42:47,661 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:42:47,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:42:47,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1427857313, now seen corresponding path program 1 times [2018-11-07 15:42:47,668 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:42:47,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:47,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:42:47,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:47,715 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:42:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:42:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:42:48,228 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:42:48,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:42:48,229 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:42:48,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:42:48,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:42:48,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:42:48,254 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 15:42:55,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:42:55,340 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 15:42:55,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:42:55,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-11-07 15:42:55,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:42:55,387 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 15:42:55,387 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 15:42:55,399 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:42:55,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 15:42:55,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 15:42:55,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 15:42:55,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-11-07 15:42:55,542 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 69 [2018-11-07 15:42:55,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:42:55,543 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-11-07 15:42:55,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:42:55,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-11-07 15:42:55,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 15:42:55,559 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:42:55,559 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] [2018-11-07 15:42:55,559 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:42:55,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:42:55,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1828983656, now seen corresponding path program 1 times [2018-11-07 15:42:55,560 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:42:55,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:55,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:42:55,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:55,563 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:42:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:42:55,905 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:42:55,905 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:42:55,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:42:55,906 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:42:55,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:42:55,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:42:55,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:42:55,909 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-11-07 15:43:04,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:43:04,339 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-11-07 15:43:04,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:43:04,340 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-11-07 15:43:04,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:43:04,361 INFO L225 Difference]: With dead ends: 4422 [2018-11-07 15:43:04,361 INFO L226 Difference]: Without dead ends: 2954 [2018-11-07 15:43:04,367 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:43:04,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-11-07 15:43:04,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-11-07 15:43:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-11-07 15:43:04,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5031 transitions. [2018-11-07 15:43:04,458 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5031 transitions. Word has length 143 [2018-11-07 15:43:04,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:43:04,459 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5031 transitions. [2018-11-07 15:43:04,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:43:04,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5031 transitions. [2018-11-07 15:43:04,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-07 15:43:04,464 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:43:04,464 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] [2018-11-07 15:43:04,464 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:43:04,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:43:04,465 INFO L82 PathProgramCache]: Analyzing trace with hash -867833311, now seen corresponding path program 1 times [2018-11-07 15:43:04,465 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:43:04,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:43:04,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:43:04,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:43:04,466 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:43:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:43:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:43:04,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:43:04,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:43:04,641 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:43:04,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:43:04,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:43:04,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:43:04,642 INFO L87 Difference]: Start difference. First operand 2928 states and 5031 transitions. Second operand 5 states. [2018-11-07 15:43:14,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:43:14,346 INFO L93 Difference]: Finished difference Result 10268 states and 17658 transitions. [2018-11-07 15:43:14,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 15:43:14,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-11-07 15:43:14,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:43:14,396 INFO L225 Difference]: With dead ends: 10268 [2018-11-07 15:43:14,397 INFO L226 Difference]: Without dead ends: 7346 [2018-11-07 15:43:14,414 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:43:14,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7346 states. [2018-11-07 15:43:14,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7346 to 7268. [2018-11-07 15:43:14,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7268 states. [2018-11-07 15:43:14,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7268 states to 7268 states and 10819 transitions. [2018-11-07 15:43:14,660 INFO L78 Accepts]: Start accepts. Automaton has 7268 states and 10819 transitions. Word has length 146 [2018-11-07 15:43:14,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:43:14,662 INFO L480 AbstractCegarLoop]: Abstraction has 7268 states and 10819 transitions. [2018-11-07 15:43:14,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:43:14,662 INFO L276 IsEmpty]: Start isEmpty. Operand 7268 states and 10819 transitions. [2018-11-07 15:43:14,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-07 15:43:14,668 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:43:14,672 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] [2018-11-07 15:43:14,672 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:43:14,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:43:14,673 INFO L82 PathProgramCache]: Analyzing trace with hash -317879939, now seen corresponding path program 1 times [2018-11-07 15:43:14,673 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:43:14,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:43:14,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:43:14,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:43:14,674 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:43:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:43:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:43:14,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:43:14,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:43:14,884 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:43:14,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:43:14,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:43:14,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:43:14,886 INFO L87 Difference]: Start difference. First operand 7268 states and 10819 transitions. Second operand 4 states. [2018-11-07 15:43:21,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:43:21,887 INFO L93 Difference]: Finished difference Result 25196 states and 39361 transitions. [2018-11-07 15:43:21,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:43:21,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2018-11-07 15:43:21,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:43:21,971 INFO L225 Difference]: With dead ends: 25196 [2018-11-07 15:43:21,971 INFO L226 Difference]: Without dead ends: 17934 [2018-11-07 15:43:22,016 INFO L604 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 [2018-11-07 15:43:22,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17934 states. [2018-11-07 15:43:22,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17934 to 17929. [2018-11-07 15:43:22,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17929 states. [2018-11-07 15:43:22,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17929 states to 17929 states and 25578 transitions. [2018-11-07 15:43:22,430 INFO L78 Accepts]: Start accepts. Automaton has 17929 states and 25578 transitions. Word has length 176 [2018-11-07 15:43:22,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:43:22,431 INFO L480 AbstractCegarLoop]: Abstraction has 17929 states and 25578 transitions. [2018-11-07 15:43:22,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:43:22,431 INFO L276 IsEmpty]: Start isEmpty. Operand 17929 states and 25578 transitions. [2018-11-07 15:43:22,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-11-07 15:43:22,460 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:43:22,460 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:43:22,461 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:43:22,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:43:22,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1232784131, now seen corresponding path program 1 times [2018-11-07 15:43:22,461 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:43:22,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:43:22,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:43:22,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:43:22,463 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:43:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:43:22,796 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:43:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 192 proven. 267 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:43:23,581 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:43:23,581 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:43:23,582 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 369 with the following transitions: [2018-11-07 15:43:23,585 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], [2228], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2280], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 15:43:23,632 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:43:23,632 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:43:24,272 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:43:24,274 INFO L272 AbstractInterpreter]: Visited 117 different actions 117 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 15:43:24,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:43:24,328 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:43:25,231 INFO L227 lantSequenceWeakener]: Weakened 356 states. On average, predicates are now at 77.93% of their original sizes. [2018-11-07 15:43:25,232 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:43:25,577 INFO L415 sIntCurrentIteration]: We unified 367 AI predicates to 367 [2018-11-07 15:43:25,577 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:43:25,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:43:25,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2018-11-07 15:43:25,578 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:43:25,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 15:43:25,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 15:43:25,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 15:43:25,580 INFO L87 Difference]: Start difference. First operand 17929 states and 25578 transitions. Second operand 7 states. [2018-11-07 15:43:33,471 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 15:46:38,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:46:38,961 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 15:46:38,966 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 15:46:38,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:46:38 BoogieIcfgContainer [2018-11-07 15:46:38,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 15:46:38,967 INFO L168 Benchmark]: Toolchain (without parser) took 242787.30 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 15:46:38,969 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 15:46:38,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1674.30 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 15:46:38,971 INFO L168 Benchmark]: Boogie Procedure Inliner took 277.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 799.5 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -993.4 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 15:46:38,972 INFO L168 Benchmark]: Boogie Preprocessor took 216.11 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-11-07 15:46:38,974 INFO L168 Benchmark]: RCFGBuilder took 9170.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 504.5 MB). Peak memory consumption was 504.5 MB. Max. memory is 7.1 GB. [2018-11-07 15:46:38,976 INFO L168 Benchmark]: TraceAbstraction took 231444.26 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 2.8 GB in the end (delta: -1.1 GB). Peak memory consumption was 827.9 MB. Max. memory is 7.1 GB. [2018-11-07 15:46:38,982 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1674.30 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 277.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 799.5 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -993.4 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 216.11 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9170.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 504.5 MB). Peak memory consumption was 504.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231444.26 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 2.8 GB in the end (delta: -1.1 GB). Peak memory consumption was 827.9 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 (17929states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (15641 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 231.3s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 225.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1071 SDtfs, 9100 SDslu, 625 SDs, 0 SdLazy, 16091 SolverSat, 5358 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 201.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 397 GetRequests, 372 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17929occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.7s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9979587624001793 AbsIntWeakeningRatio, 0.08719346049046321 AbsIntAvgWeakeningVarsNumRemoved, 18.662125340599456 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 4 MinimizatonAttempts, 109 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 902 NumberOfCodeBlocks, 902 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 897 ConstructedInterpolants, 0 QuantifiedInterpolants, 649721 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 383/650 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown