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_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 02:55:10,566 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 02:55:10,568 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 02:55:10,579 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 02:55:10,580 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 02:55:10,581 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 02:55:10,582 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 02:55:10,584 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 02:55:10,586 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 02:55:10,587 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 02:55:10,588 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 02:55:10,588 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 02:55:10,589 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 02:55:10,590 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 02:55:10,592 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 02:55:10,592 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 02:55:10,593 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 02:55:10,595 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 02:55:10,597 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 02:55:10,599 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 02:55:10,600 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 02:55:10,602 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 02:55:10,604 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 02:55:10,604 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 02:55:10,605 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 02:55:10,606 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 02:55:10,607 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 02:55:10,608 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 02:55:10,608 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 02:55:10,610 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 02:55:10,610 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 02:55:10,611 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 02:55:10,614 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 [2018-11-07 02:55:10,630 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 02:55:10,630 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 02:55:10,631 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 02:55:10,631 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 02:55:10,631 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 02:55:10,631 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 02:55:10,632 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 02:55:10,632 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 02:55:10,632 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 02:55:10,632 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 02:55:10,633 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 02:55:10,633 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 02:55:10,633 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 02:55:10,634 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 02:55:10,634 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 02:55:10,634 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 02:55:10,634 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 02:55:10,634 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 02:55:10,635 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 02:55:10,635 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 02:55:10,635 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 02:55:10,635 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 02:55:10,635 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 02:55:10,636 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 02:55:10,636 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 02:55:10,636 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 02:55:10,636 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 02:55:10,636 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 02:55:10,636 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 02:55:10,637 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 02:55:10,638 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 02:55:10,638 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 02:55:10,638 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 02:55:10,638 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 02:55:10,691 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 02:55:10,706 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 02:55:10,712 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 02:55:10,714 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 02:55:10,714 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 02:55:10,715 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label16_true-unreach-call.c [2018-11-07 02:55:10,781 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb6eb2f7e/ea89c42263ab4a8aa85b36f03e3274b1/FLAGb6ee24269 [2018-11-07 02:55:11,449 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 02:55:11,451 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label16_true-unreach-call.c [2018-11-07 02:55:11,470 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb6eb2f7e/ea89c42263ab4a8aa85b36f03e3274b1/FLAGb6ee24269 [2018-11-07 02:55:11,483 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb6eb2f7e/ea89c42263ab4a8aa85b36f03e3274b1 [2018-11-07 02:55:11,495 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 02:55:11,496 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 02:55:11,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 02:55:11,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 02:55:11,504 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 02:55:11,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:55:11" (1/1) ... [2018-11-07 02:55:11,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@567b4d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:11, skipping insertion in model container [2018-11-07 02:55:11,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:55:11" (1/1) ... [2018-11-07 02:55:11,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 02:55:11,593 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 02:55:12,218 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:55:12,222 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 02:55:12,366 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:55:12,390 INFO L193 MainTranslator]: Completed translation [2018-11-07 02:55:12,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:12 WrapperNode [2018-11-07 02:55:12,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 02:55:12,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 02:55:12,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 02:55:12,393 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 02:55:12,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:12" (1/1) ... [2018-11-07 02:55:12,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:12" (1/1) ... [2018-11-07 02:55:12,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 02:55:12,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 02:55:12,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 02:55:12,550 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 02:55:12,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:12" (1/1) ... [2018-11-07 02:55:12,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:12" (1/1) ... [2018-11-07 02:55:12,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:12" (1/1) ... [2018-11-07 02:55:12,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:12" (1/1) ... [2018-11-07 02:55:12,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:12" (1/1) ... [2018-11-07 02:55:12,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:12" (1/1) ... [2018-11-07 02:55:12,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:12" (1/1) ... [2018-11-07 02:55:12,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 02:55:12,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 02:55:12,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 02:55:12,743 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 02:55:12,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:12" (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 02:55:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 02:55:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 02:55:12,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 02:55:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 02:55:12,825 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 02:55:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 02:55:12,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 02:55:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 02:55:12,826 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 02:55:18,098 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 02:55:18,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:55:18 BoogieIcfgContainer [2018-11-07 02:55:18,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 02:55:18,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 02:55:18,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 02:55:18,108 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 02:55:18,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:55:11" (1/3) ... [2018-11-07 02:55:18,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdd996b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:55:18, skipping insertion in model container [2018-11-07 02:55:18,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:12" (2/3) ... [2018-11-07 02:55:18,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdd996b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:55:18, skipping insertion in model container [2018-11-07 02:55:18,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:55:18" (3/3) ... [2018-11-07 02:55:18,116 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label16_true-unreach-call.c [2018-11-07 02:55:18,130 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 02:55:18,140 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 02:55:18,157 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 02:55:18,211 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 02:55:18,211 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 02:55:18,211 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 02:55:18,212 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 02:55:18,212 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 02:55:18,212 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 02:55:18,213 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 02:55:18,213 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 02:55:18,244 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 02:55:18,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-07 02:55:18,254 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:55:18,255 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] [2018-11-07 02:55:18,258 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:55:18,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:55:18,264 INFO L82 PathProgramCache]: Analyzing trace with hash -328635820, now seen corresponding path program 1 times [2018-11-07 02:55:18,267 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:55:18,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:18,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:55:18,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:18,315 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:55:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:55:18,817 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 02:55:18,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:55:18,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 02:55:18,820 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:55:18,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 02:55:18,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 02:55:18,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:55:18,850 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 02:55:22,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:55:22,283 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-11-07 02:55:22,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 02:55:22,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-11-07 02:55:22,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:55:22,309 INFO L225 Difference]: With dead ends: 985 [2018-11-07 02:55:22,309 INFO L226 Difference]: Without dead ends: 686 [2018-11-07 02:55:22,319 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:55:22,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-11-07 02:55:22,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-11-07 02:55:22,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-11-07 02:55:22,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-11-07 02:55:22,422 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 50 [2018-11-07 02:55:22,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:55:22,423 INFO L480 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-11-07 02:55:22,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 02:55:22,424 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-11-07 02:55:22,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 02:55:22,432 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:55:22,432 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:55:22,433 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:55:22,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:55:22,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1947059533, now seen corresponding path program 1 times [2018-11-07 02:55:22,433 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:55:22,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:22,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:55:22,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:22,435 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:55:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:55:22,814 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:55:22,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:55:22,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 02:55:22,815 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:55:22,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 02:55:22,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 02:55:22,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 02:55:22,818 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-11-07 02:55:28,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:55:28,062 INFO L93 Difference]: Finished difference Result 2339 states and 3734 transitions. [2018-11-07 02:55:28,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:55:28,068 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-07 02:55:28,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:55:28,087 INFO L225 Difference]: With dead ends: 2339 [2018-11-07 02:55:28,087 INFO L226 Difference]: Without dead ends: 1659 [2018-11-07 02:55:28,093 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 [2018-11-07 02:55:28,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2018-11-07 02:55:28,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1642. [2018-11-07 02:55:28,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1642 states. [2018-11-07 02:55:28,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2354 transitions. [2018-11-07 02:55:28,204 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2354 transitions. Word has length 131 [2018-11-07 02:55:28,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:55:28,205 INFO L480 AbstractCegarLoop]: Abstraction has 1642 states and 2354 transitions. [2018-11-07 02:55:28,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 02:55:28,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2354 transitions. [2018-11-07 02:55:28,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-11-07 02:55:28,218 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:55:28,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:55:28,221 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:55:28,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:55:28,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1463851825, now seen corresponding path program 1 times [2018-11-07 02:55:28,221 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:55:28,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:28,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:55:28,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:28,225 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:55:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:55:28,531 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:55:28,532 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:55:28,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 02:55:28,532 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:55:28,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 02:55:28,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 02:55:28,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:55:28,534 INFO L87 Difference]: Start difference. First operand 1642 states and 2354 transitions. Second operand 4 states. [2018-11-07 02:55:31,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:55:31,190 INFO L93 Difference]: Finished difference Result 6013 states and 9018 transitions. [2018-11-07 02:55:31,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 02:55:31,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 182 [2018-11-07 02:55:31,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:55:31,229 INFO L225 Difference]: With dead ends: 6013 [2018-11-07 02:55:31,229 INFO L226 Difference]: Without dead ends: 4377 [2018-11-07 02:55:31,247 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 [2018-11-07 02:55:31,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4377 states. [2018-11-07 02:55:31,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4377 to 4354. [2018-11-07 02:55:31,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4354 states. [2018-11-07 02:55:31,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 6078 transitions. [2018-11-07 02:55:31,391 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 6078 transitions. Word has length 182 [2018-11-07 02:55:31,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:55:31,392 INFO L480 AbstractCegarLoop]: Abstraction has 4354 states and 6078 transitions. [2018-11-07 02:55:31,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 02:55:31,392 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 6078 transitions. [2018-11-07 02:55:31,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-11-07 02:55:31,405 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:55:31,405 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:55:31,405 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:55:31,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:55:31,407 INFO L82 PathProgramCache]: Analyzing trace with hash -572064998, now seen corresponding path program 1 times [2018-11-07 02:55:31,407 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:55:31,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:31,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:55:31,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:31,409 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:55:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:55:31,746 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 86 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 02:55:31,746 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:55:31,746 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:55:31,747 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 227 with the following transitions: [2018-11-07 02:55:31,750 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [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], [595], [599], [603], [607], [611], [615], [618], [623], [625], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 02:55:31,828 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:55:31,828 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:55:33,808 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:55:35,510 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:55:35,512 INFO L272 AbstractInterpreter]: Visited 106 different actions 106 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 02:55:35,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:55:35,528 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:55:38,195 INFO L227 lantSequenceWeakener]: Weakened 216 states. On average, predicates are now at 73.63% of their original sizes. [2018-11-07 02:55:38,195 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:55:38,707 INFO L415 sIntCurrentIteration]: We unified 225 AI predicates to 225 [2018-11-07 02:55:38,708 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:55:38,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:55:38,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 02:55:38,709 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:55:38,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 02:55:38,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 02:55:38,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 02:55:38,711 INFO L87 Difference]: Start difference. First operand 4354 states and 6078 transitions. Second operand 7 states. [2018-11-07 02:56:04,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:56:04,973 INFO L93 Difference]: Finished difference Result 8894 states and 12374 transitions. [2018-11-07 02:56:04,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:56:04,974 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2018-11-07 02:56:04,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:56:05,001 INFO L225 Difference]: With dead ends: 8894 [2018-11-07 02:56:05,002 INFO L226 Difference]: Without dead ends: 4546 [2018-11-07 02:56:05,020 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 226 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 02:56:05,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2018-11-07 02:56:05,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 4544. [2018-11-07 02:56:05,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4544 states. [2018-11-07 02:56:05,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4544 states to 4544 states and 6278 transitions. [2018-11-07 02:56:05,166 INFO L78 Accepts]: Start accepts. Automaton has 4544 states and 6278 transitions. Word has length 226 [2018-11-07 02:56:05,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:56:05,167 INFO L480 AbstractCegarLoop]: Abstraction has 4544 states and 6278 transitions. [2018-11-07 02:56:05,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 02:56:05,167 INFO L276 IsEmpty]: Start isEmpty. Operand 4544 states and 6278 transitions. [2018-11-07 02:56:05,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-11-07 02:56:05,183 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:56:05,184 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 02:56:05,184 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:56:05,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:56:05,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1720249895, now seen corresponding path program 1 times [2018-11-07 02:56:05,185 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:56:05,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:56:05,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:56:05,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:56:05,186 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:56:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:56:05,479 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-11-07 02:56:05,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:56:05,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 02:56:05,480 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:56:05,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 02:56:05,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 02:56:05,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:56:05,482 INFO L87 Difference]: Start difference. First operand 4544 states and 6278 transitions. Second operand 3 states. [2018-11-07 02:56:11,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:56:11,272 INFO L93 Difference]: Finished difference Result 10605 states and 15140 transitions. [2018-11-07 02:56:11,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 02:56:11,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 320 [2018-11-07 02:56:11,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:56:11,313 INFO L225 Difference]: With dead ends: 10605 [2018-11-07 02:56:11,313 INFO L226 Difference]: Without dead ends: 6257 [2018-11-07 02:56:11,340 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:56:11,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6257 states. [2018-11-07 02:56:11,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6257 to 6257. [2018-11-07 02:56:11,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6257 states. [2018-11-07 02:56:11,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6257 states to 6257 states and 8403 transitions. [2018-11-07 02:56:11,514 INFO L78 Accepts]: Start accepts. Automaton has 6257 states and 8403 transitions. Word has length 320 [2018-11-07 02:56:11,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:56:11,515 INFO L480 AbstractCegarLoop]: Abstraction has 6257 states and 8403 transitions. [2018-11-07 02:56:11,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 02:56:11,515 INFO L276 IsEmpty]: Start isEmpty. Operand 6257 states and 8403 transitions. [2018-11-07 02:56:11,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-11-07 02:56:11,535 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:56:11,535 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:56:11,536 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:56:11,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:56:11,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1616066757, now seen corresponding path program 1 times [2018-11-07 02:56:11,536 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:56:11,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:56:11,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:56:11,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:56:11,538 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:56:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:56:12,110 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-07 02:56:12,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:56:12,111 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:56:12,112 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 354 with the following transitions: [2018-11-07 02:56:12,112 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [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], [578], [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] [2018-11-07 02:56:12,127 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:56:12,128 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:56:14,687 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:56:26,611 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:56:26,612 INFO L272 AbstractInterpreter]: Visited 126 different actions 366 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 02:56:26,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:56:26,617 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:56:30,057 INFO L227 lantSequenceWeakener]: Weakened 63 states. On average, predicates are now at 75.98% of their original sizes. [2018-11-07 02:56:30,057 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:56:43,126 INFO L415 sIntCurrentIteration]: We unified 352 AI predicates to 352 [2018-11-07 02:56:43,127 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:56:43,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:56:43,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-07 02:56:43,127 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:56:43,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 02:56:43,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 02:56:43,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2018-11-07 02:56:43,130 INFO L87 Difference]: Start difference. First operand 6257 states and 8403 transitions. Second operand 22 states. Received shutdown request... [2018-11-07 02:59:04,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 02:59:04,545 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 02:59:04,550 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 02:59:04,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:59:04 BoogieIcfgContainer [2018-11-07 02:59:04,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 02:59:04,551 INFO L168 Benchmark]: Toolchain (without parser) took 233056.25 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 2.3 GB in the end (delta: -941.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-07 02:59:04,553 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 02:59:04,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 892.63 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-11-07 02:59:04,555 INFO L168 Benchmark]: Boogie Procedure Inliner took 157.36 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 725.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -830.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2018-11-07 02:59:04,556 INFO L168 Benchmark]: Boogie Preprocessor took 192.78 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-11-07 02:59:04,556 INFO L168 Benchmark]: RCFGBuilder took 5360.86 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 176.1 MB). Peak memory consumption was 176.1 MB. Max. memory is 7.1 GB. [2018-11-07 02:59:04,557 INFO L168 Benchmark]: TraceAbstraction took 226445.94 ms. Allocated memory was 2.2 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 2.3 GB in the end (delta: -353.5 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 02:59:04,564 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 892.63 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 157.36 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 725.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -830.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 192.78 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5360.86 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 176.1 MB). Peak memory consumption was 176.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226445.94 ms. Allocated memory was 2.2 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 2.3 GB in the end (delta: -353.5 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 135). Cancelled while BasicCegarLoop was constructing difference of abstraction (6257states) and FLOYD_HOARE automaton (currently 18 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (958 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 226.3s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 185.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1297 SDtfs, 3857 SDslu, 798 SDs, 0 SdLazy, 6628 SolverSat, 1229 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 87.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 612 GetRequests, 565 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 20.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6257occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 18.2s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9961922184625827 AbsIntWeakeningRatio, 0.10918544194107452 AbsIntAvgWeakeningVarsNumRemoved, 1169.8838821490467 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 1262 NumberOfCodeBlocks, 1262 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1256 ConstructedInterpolants, 0 QuantifiedInterpolants, 749252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 797/867 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown