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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label15_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 23:57:36,402 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 23:57:36,404 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 23:57:36,417 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 23:57:36,417 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 23:57:36,418 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 23:57:36,420 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 23:57:36,421 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 23:57:36,423 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 23:57:36,424 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 23:57:36,425 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 23:57:36,425 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 23:57:36,426 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 23:57:36,427 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 23:57:36,428 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 23:57:36,429 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 23:57:36,430 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 23:57:36,432 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 23:57:36,434 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 23:57:36,436 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 23:57:36,437 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 23:57:36,438 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 23:57:36,440 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 23:57:36,441 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 23:57:36,441 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 23:57:36,442 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 23:57:36,443 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 23:57:36,444 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 23:57:36,445 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 23:57:36,446 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 23:57:36,446 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 23:57:36,447 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 23:57:36,447 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 23:57:36,447 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 23:57:36,448 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 23:57:36,449 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 23:57:36,449 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-06 23:57:36,479 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 23:57:36,479 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 23:57:36,480 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 23:57:36,480 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-06 23:57:36,480 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-06 23:57:36,481 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-06 23:57:36,481 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-06 23:57:36,481 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-06 23:57:36,481 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-06 23:57:36,481 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-06 23:57:36,482 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-06 23:57:36,482 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-06 23:57:36,483 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 23:57:36,483 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 23:57:36,483 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 23:57:36,483 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 23:57:36,483 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 23:57:36,484 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 23:57:36,484 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 23:57:36,484 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 23:57:36,484 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 23:57:36,484 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 23:57:36,485 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 23:57:36,485 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 23:57:36,485 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 23:57:36,485 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 23:57:36,485 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 23:57:36,486 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 23:57:36,486 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-06 23:57:36,486 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 23:57:36,486 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 23:57:36,486 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 23:57:36,487 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 23:57:36,487 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-06 23:57:36,533 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 23:57:36,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 23:57:36,559 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 23:57:36,560 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 23:57:36,561 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 23:57:36,561 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label15_false-unreach-call.c [2018-11-06 23:57:36,625 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfa0fbfc7/3ceb7642664440adb219fae45f60d205/FLAGb0e0d7123 [2018-11-06 23:57:37,287 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 23:57:37,288 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label15_false-unreach-call.c [2018-11-06 23:57:37,307 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfa0fbfc7/3ceb7642664440adb219fae45f60d205/FLAGb0e0d7123 [2018-11-06 23:57:37,323 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfa0fbfc7/3ceb7642664440adb219fae45f60d205 [2018-11-06 23:57:37,335 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 23:57:37,337 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 23:57:37,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 23:57:37,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 23:57:37,342 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 23:57:37,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:57:37" (1/1) ... [2018-11-06 23:57:37,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@774206dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:37, skipping insertion in model container [2018-11-06 23:57:37,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:57:37" (1/1) ... [2018-11-06 23:57:37,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 23:57:37,440 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 23:57:38,071 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 23:57:38,078 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 23:57:38,238 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 23:57:38,258 INFO L193 MainTranslator]: Completed translation [2018-11-06 23:57:38,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:38 WrapperNode [2018-11-06 23:57:38,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 23:57:38,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 23:57:38,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 23:57:38,261 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 23:57:38,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:38" (1/1) ... [2018-11-06 23:57:38,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:38" (1/1) ... [2018-11-06 23:57:38,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 23:57:38,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 23:57:38,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 23:57:38,470 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 23:57:38,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:38" (1/1) ... [2018-11-06 23:57:38,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:38" (1/1) ... [2018-11-06 23:57:38,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:38" (1/1) ... [2018-11-06 23:57:38,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:38" (1/1) ... [2018-11-06 23:57:38,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:38" (1/1) ... [2018-11-06 23:57:38,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:38" (1/1) ... [2018-11-06 23:57:38,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:38" (1/1) ... [2018-11-06 23:57:38,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 23:57:38,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 23:57:38,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 23:57:38,622 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 23:57:38,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:38" (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 [2018-11-06 23:57:38,700 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 23:57:38,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-06 23:57:38,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-06 23:57:38,702 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-06 23:57:38,702 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-06 23:57:38,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 23:57:38,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 23:57:38,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-06 23:57:38,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-06 23:57:42,962 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 23:57:42,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:57:42 BoogieIcfgContainer [2018-11-06 23:57:42,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 23:57:42,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 23:57:42,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 23:57:42,968 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 23:57:42,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:57:37" (1/3) ... [2018-11-06 23:57:42,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507c27a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:57:42, skipping insertion in model container [2018-11-06 23:57:42,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:38" (2/3) ... [2018-11-06 23:57:42,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507c27a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:57:42, skipping insertion in model container [2018-11-06 23:57:42,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:57:42" (3/3) ... [2018-11-06 23:57:42,973 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label15_false-unreach-call.c [2018-11-06 23:57:42,983 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 23:57:42,994 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 23:57:43,013 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 23:57:43,054 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 23:57:43,054 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 23:57:43,054 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 23:57:43,054 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 23:57:43,054 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 23:57:43,055 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 23:57:43,055 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 23:57:43,055 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 23:57:43,086 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-06 23:57:43,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-06 23:57:43,094 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:57:43,095 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] [2018-11-06 23:57:43,098 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:57:43,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:57:43,104 INFO L82 PathProgramCache]: Analyzing trace with hash 90592777, now seen corresponding path program 1 times [2018-11-06 23:57:43,107 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:57:43,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:57:43,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:57:43,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:57:43,168 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:57:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:57:43,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:57:43,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 23:57:43,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 23:57:43,614 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:57:43,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 23:57:43,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 23:57:43,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 23:57:43,636 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-06 23:57:46,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:57:46,998 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-11-06 23:57:47,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 23:57:47,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-11-06 23:57:47,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:57:47,030 INFO L225 Difference]: With dead ends: 985 [2018-11-06 23:57:47,030 INFO L226 Difference]: Without dead ends: 686 [2018-11-06 23:57:47,040 INFO L604 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 [2018-11-06 23:57:47,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-11-06 23:57:47,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-11-06 23:57:47,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-11-06 23:57:47,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-11-06 23:57:47,145 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 21 [2018-11-06 23:57:47,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:57:47,145 INFO L480 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-11-06 23:57:47,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 23:57:47,146 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-11-06 23:57:47,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-06 23:57:47,156 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:57:47,156 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-06 23:57:47,157 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:57:47,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:57:47,158 INFO L82 PathProgramCache]: Analyzing trace with hash 2082581707, now seen corresponding path program 1 times [2018-11-06 23:57:47,158 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:57:47,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:57:47,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:57:47,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:57:47,161 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:57:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:57:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:57:47,504 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 23:57:47,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 23:57:47,505 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:57:47,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 23:57:47,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 23:57:47,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 23:57:47,507 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-11-06 23:57:52,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:57:52,013 INFO L93 Difference]: Finished difference Result 2338 states and 3732 transitions. [2018-11-06 23:57:52,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 23:57:52,016 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-11-06 23:57:52,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:57:52,031 INFO L225 Difference]: With dead ends: 2338 [2018-11-06 23:57:52,031 INFO L226 Difference]: Without dead ends: 1658 [2018-11-06 23:57:52,036 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 23:57:52,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2018-11-06 23:57:52,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1641. [2018-11-06 23:57:52,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1641 states. [2018-11-06 23:57:52,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2352 transitions. [2018-11-06 23:57:52,128 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2352 transitions. Word has length 102 [2018-11-06 23:57:52,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:57:52,129 INFO L480 AbstractCegarLoop]: Abstraction has 1641 states and 2352 transitions. [2018-11-06 23:57:52,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 23:57:52,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2352 transitions. [2018-11-06 23:57:52,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-06 23:57:52,138 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:57:52,138 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 23:57:52,139 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:57:52,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:57:52,139 INFO L82 PathProgramCache]: Analyzing trace with hash 712970381, now seen corresponding path program 1 times [2018-11-06 23:57:52,139 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:57:52,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:57:52,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:57:52,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:57:52,141 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:57:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:57:52,402 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:57:52,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 23:57:52,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 23:57:52,403 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:57:52,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 23:57:52,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 23:57:52,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 23:57:52,404 INFO L87 Difference]: Start difference. First operand 1641 states and 2352 transitions. Second operand 4 states. [2018-11-06 23:57:56,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:57:56,452 INFO L93 Difference]: Finished difference Result 6228 states and 9280 transitions. [2018-11-06 23:57:56,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 23:57:56,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2018-11-06 23:57:56,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:57:56,497 INFO L225 Difference]: With dead ends: 6228 [2018-11-06 23:57:56,497 INFO L226 Difference]: Without dead ends: 4593 [2018-11-06 23:57:56,514 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 23:57:56,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4593 states. [2018-11-06 23:57:56,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4593 to 4563. [2018-11-06 23:57:56,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4563 states. [2018-11-06 23:57:56,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 6338 transitions. [2018-11-06 23:57:56,657 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 6338 transitions. Word has length 153 [2018-11-06 23:57:56,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:57:56,658 INFO L480 AbstractCegarLoop]: Abstraction has 4563 states and 6338 transitions. [2018-11-06 23:57:56,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 23:57:56,659 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 6338 transitions. [2018-11-06 23:57:56,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-11-06 23:57:56,667 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:57:56,667 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 23:57:56,668 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:57:56,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:57:56,668 INFO L82 PathProgramCache]: Analyzing trace with hash -657545899, now seen corresponding path program 1 times [2018-11-06 23:57:56,668 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:57:56,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:57:56,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:57:56,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:57:56,670 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:57:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:57:56,924 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 28 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-06 23:57:56,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:57:56,925 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-06 23:57:56,926 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 190 with the following transitions: [2018-11-06 23:57:56,928 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-06 23:57:56,999 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-06 23:57:56,999 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-06 23:57:58,796 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-06 23:58:00,631 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-06 23:58:00,633 INFO L272 AbstractInterpreter]: Visited 100 different actions 100 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-06 23:58:00,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:58:00,671 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-06 23:58:03,199 INFO L227 lantSequenceWeakener]: Weakened 181 states. On average, predicates are now at 73.12% of their original sizes. [2018-11-06 23:58:03,199 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-06 23:58:03,704 INFO L415 sIntCurrentIteration]: We unified 188 AI predicates to 188 [2018-11-06 23:58:03,704 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-06 23:58:03,705 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 23:58:03,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-06 23:58:03,707 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:58:03,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 23:58:03,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 23:58:03,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-06 23:58:03,711 INFO L87 Difference]: Start difference. First operand 4563 states and 6338 transitions. Second operand 7 states. [2018-11-06 23:58:37,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:58:37,815 INFO L93 Difference]: Finished difference Result 8934 states and 12464 transitions. [2018-11-06 23:58:37,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 23:58:37,816 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2018-11-06 23:58:37,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:58:37,842 INFO L225 Difference]: With dead ends: 8934 [2018-11-06 23:58:37,843 INFO L226 Difference]: Without dead ends: 4566 [2018-11-06 23:58:37,861 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-06 23:58:37,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4566 states. [2018-11-06 23:58:37,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4566 to 4564. [2018-11-06 23:58:37,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4564 states. [2018-11-06 23:58:37,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 6324 transitions. [2018-11-06 23:58:37,978 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 6324 transitions. Word has length 189 [2018-11-06 23:58:37,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:58:37,979 INFO L480 AbstractCegarLoop]: Abstraction has 4564 states and 6324 transitions. [2018-11-06 23:58:37,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 23:58:37,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 6324 transitions. [2018-11-06 23:58:37,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-11-06 23:58:37,984 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:58:37,984 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 23:58:37,984 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:58:37,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:58:37,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1702589905, now seen corresponding path program 1 times [2018-11-06 23:58:37,985 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:58:37,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:58:37,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:58:37,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:58:37,986 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:58:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:58:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-11-06 23:58:39,060 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:58:39,060 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-06 23:58:39,061 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 234 with the following transitions: [2018-11-06 23:58:39,061 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-06 23:58:39,073 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-06 23:58:39,073 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-06 23:58:41,184 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-06 23:58:54,611 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-06 23:58:54,612 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-06 23:58:54,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:58:54,619 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-06 23:58:58,674 INFO L227 lantSequenceWeakener]: Weakened 224 states. On average, predicates are now at 73.43% of their original sizes. [2018-11-06 23:58:58,674 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-06 23:59:02,751 INFO L415 sIntCurrentIteration]: We unified 232 AI predicates to 232 [2018-11-06 23:59:02,752 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-06 23:59:02,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 23:59:02,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [9] total 22 [2018-11-06 23:59:02,752 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:59:02,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-06 23:59:02,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-06 23:59:02,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-06 23:59:02,754 INFO L87 Difference]: Start difference. First operand 4564 states and 6324 transitions. Second operand 15 states. [2018-11-07 00:00:42,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:00:42,535 INFO L93 Difference]: Finished difference Result 9130 states and 12686 transitions. [2018-11-07 00:00:42,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 00:00:42,536 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 233 [2018-11-07 00:00:42,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:00:42,562 INFO L225 Difference]: With dead ends: 9130 [2018-11-07 00:00:42,562 INFO L226 Difference]: Without dead ends: 4762 [2018-11-07 00:00:42,581 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 245 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2018-11-07 00:00:42,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4762 states. [2018-11-07 00:00:42,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4762 to 4755. [2018-11-07 00:00:42,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4755 states. [2018-11-07 00:00:42,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4755 states to 4755 states and 6535 transitions. [2018-11-07 00:00:42,791 INFO L78 Accepts]: Start accepts. Automaton has 4755 states and 6535 transitions. Word has length 233 [2018-11-07 00:00:42,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:00:42,792 INFO L480 AbstractCegarLoop]: Abstraction has 4755 states and 6535 transitions. [2018-11-07 00:00:42,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 00:00:42,792 INFO L276 IsEmpty]: Start isEmpty. Operand 4755 states and 6535 transitions. [2018-11-07 00:00:42,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-11-07 00:00:42,798 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:00:42,799 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:00:42,799 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:00:42,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:00:42,799 INFO L82 PathProgramCache]: Analyzing trace with hash 690910971, now seen corresponding path program 1 times [2018-11-07 00:00:42,800 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:00:42,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:00:42,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:00:42,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:00:42,801 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:00:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:00:43,276 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 00:00:43,363 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-11-07 00:00:43,364 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:00:43,364 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:00:43,364 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 244 with the following transitions: [2018-11-07 00:00:43,365 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 00:00:43,373 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:00:43,373 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:00:45,586 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:01:00,887 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:01:00,887 INFO L272 AbstractInterpreter]: Visited 135 different actions 393 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 00:01:00,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:01:00,892 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:01:03,333 INFO L227 lantSequenceWeakener]: Weakened 24 states. On average, predicates are now at 76.04% of their original sizes. [2018-11-07 00:01:03,333 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-11-07 00:01:30,909 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:01:30,915 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:01:30,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:01:30 BoogieIcfgContainer [2018-11-07 00:01:30,915 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:01:30,917 INFO L168 Benchmark]: Toolchain (without parser) took 233580.90 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -635.6 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 00:01:30,918 INFO L168 Benchmark]: CDTParser took 0.29 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 00:01:30,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 921.97 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-11-07 00:01:30,919 INFO L168 Benchmark]: Boogie Procedure Inliner took 208.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -843.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2018-11-07 00:01:30,921 INFO L168 Benchmark]: Boogie Preprocessor took 151.68 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:01:30,921 INFO L168 Benchmark]: RCFGBuilder took 4341.37 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 174.2 MB). Peak memory consumption was 174.2 MB. Max. memory is 7.1 GB. [2018-11-07 00:01:30,922 INFO L168 Benchmark]: TraceAbstraction took 227951.13 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: -29.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-07 00:01:30,927 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 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 921.97 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 208.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -843.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.68 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4341.37 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 174.2 MB). Peak memory consumption was 174.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227951.13 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: -29.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 48). Cancelled while BasicCegarLoop was analyzing trace of length 244 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 12 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 227.8s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 146.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1295 SDtfs, 3860 SDslu, 990 SDs, 0 SdLazy, 6749 SolverSat, 1067 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 80.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 453 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 8.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4755occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 36.8s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9953224156396359 AbsIntWeakeningRatio, 0.1268882175226586 AbsIntAvgWeakeningVarsNumRemoved, 790.5453172205438 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 56 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 698 NumberOfCodeBlocks, 698 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 693 ConstructedInterpolants, 0 QuantifiedInterpolants, 387345 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 153/252 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown