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/Problem02_label22_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 01:13:02,642 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 01:13:02,644 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 01:13:02,657 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 01:13:02,658 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 01:13:02,659 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 01:13:02,660 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 01:13:02,662 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 01:13:02,663 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 01:13:02,664 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 01:13:02,665 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 01:13:02,666 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 01:13:02,667 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 01:13:02,668 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 01:13:02,669 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 01:13:02,670 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 01:13:02,670 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 01:13:02,672 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 01:13:02,675 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 01:13:02,676 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 01:13:02,677 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 01:13:02,679 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 01:13:02,681 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 01:13:02,688 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 01:13:02,688 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 01:13:02,689 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 01:13:02,690 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 01:13:02,690 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 01:13:02,708 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 01:13:02,708 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 01:13:02,709 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 01:13:02,710 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 01:13:02,710 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 01:13:02,710 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 01:13:02,710 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 01:13:02,710 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 01:13:02,714 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 01:13:02,714 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 01:13:02,714 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 01:13:02,714 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 01:13:02,715 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 01:13:02,715 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 01:13:02,715 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 01:13:02,716 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 01:13:02,716 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 01:13:02,716 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 01:13:02,716 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 01:13:02,716 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 01:13:02,718 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 01:13:02,718 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 01:13:02,719 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 01:13:02,719 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 01:13:02,719 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 01:13:02,719 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 01:13:02,719 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 01:13:02,720 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 01:13:02,720 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 01:13:02,720 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 01:13:02,720 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 01:13:02,720 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 01:13:02,721 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 01:13:02,721 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 01:13:02,771 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 01:13:02,786 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 01:13:02,791 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 01:13:02,793 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 01:13:02,793 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 01:13:02,794 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label22_true-unreach-call_false-termination.c [2018-11-07 01:13:02,872 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52148aac3/a28b3970ed884a7797a280f5f9f65f81/FLAGd44cbd54d [2018-11-07 01:13:03,440 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 01:13:03,441 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label22_true-unreach-call_false-termination.c [2018-11-07 01:13:03,458 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52148aac3/a28b3970ed884a7797a280f5f9f65f81/FLAGd44cbd54d [2018-11-07 01:13:03,475 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52148aac3/a28b3970ed884a7797a280f5f9f65f81 [2018-11-07 01:13:03,489 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 01:13:03,491 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 01:13:03,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 01:13:03,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 01:13:03,500 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 01:13:03,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:13:03" (1/1) ... [2018-11-07 01:13:03,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3164a125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:03, skipping insertion in model container [2018-11-07 01:13:03,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:13:03" (1/1) ... [2018-11-07 01:13:03,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 01:13:03,574 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 01:13:04,073 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:13:04,084 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 01:13:04,257 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:13:04,283 INFO L193 MainTranslator]: Completed translation [2018-11-07 01:13:04,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:04 WrapperNode [2018-11-07 01:13:04,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 01:13:04,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 01:13:04,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 01:13:04,285 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 01:13:04,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:04" (1/1) ... [2018-11-07 01:13:04,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:04" (1/1) ... [2018-11-07 01:13:04,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 01:13:04,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 01:13:04,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 01:13:04,430 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 01:13:04,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:04" (1/1) ... [2018-11-07 01:13:04,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:04" (1/1) ... [2018-11-07 01:13:04,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:04" (1/1) ... [2018-11-07 01:13:04,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:04" (1/1) ... [2018-11-07 01:13:04,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:04" (1/1) ... [2018-11-07 01:13:04,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:04" (1/1) ... [2018-11-07 01:13:04,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:04" (1/1) ... [2018-11-07 01:13:04,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 01:13:04,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 01:13:04,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 01:13:04,567 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 01:13:04,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:04" (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 01:13:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 01:13:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 01:13:04,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 01:13:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 01:13:04,647 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 01:13:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 01:13:04,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 01:13:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 01:13:04,649 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 01:13:07,930 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 01:13:07,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:13:07 BoogieIcfgContainer [2018-11-07 01:13:07,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 01:13:07,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 01:13:07,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 01:13:07,937 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 01:13:07,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:13:03" (1/3) ... [2018-11-07 01:13:07,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@529faa2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:13:07, skipping insertion in model container [2018-11-07 01:13:07,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:04" (2/3) ... [2018-11-07 01:13:07,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@529faa2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:13:07, skipping insertion in model container [2018-11-07 01:13:07,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:13:07" (3/3) ... [2018-11-07 01:13:07,941 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label22_true-unreach-call_false-termination.c [2018-11-07 01:13:07,952 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 01:13:07,962 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 01:13:07,981 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 01:13:08,022 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 01:13:08,022 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 01:13:08,023 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 01:13:08,023 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 01:13:08,023 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 01:13:08,023 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 01:13:08,023 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 01:13:08,024 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 01:13:08,053 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-11-07 01:13:08,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-07 01:13:08,067 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:13:08,068 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:08,071 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:13:08,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:13:08,078 INFO L82 PathProgramCache]: Analyzing trace with hash 2012123736, now seen corresponding path program 1 times [2018-11-07 01:13:08,081 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:13:08,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:08,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:13:08,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:08,141 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:13:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:13:08,781 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 01:13:08,853 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 01:13:08,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:13:08,856 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 01:13:08,856 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:13:08,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 01:13:08,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 01:13:08,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:13:08,885 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-11-07 01:13:10,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:13:10,971 INFO L93 Difference]: Finished difference Result 626 states and 1068 transitions. [2018-11-07 01:13:10,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 01:13:10,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2018-11-07 01:13:10,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:13:10,996 INFO L225 Difference]: With dead ends: 626 [2018-11-07 01:13:10,997 INFO L226 Difference]: Without dead ends: 387 [2018-11-07 01:13:11,003 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:13:11,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-11-07 01:13:11,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 383. [2018-11-07 01:13:11,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-11-07 01:13:11,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 644 transitions. [2018-11-07 01:13:11,128 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 644 transitions. Word has length 104 [2018-11-07 01:13:11,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:13:11,129 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 644 transitions. [2018-11-07 01:13:11,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 01:13:11,129 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 644 transitions. [2018-11-07 01:13:11,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-07 01:13:11,142 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:13:11,143 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 01:13:11,143 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:13:11,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:13:11,144 INFO L82 PathProgramCache]: Analyzing trace with hash 299374799, now seen corresponding path program 1 times [2018-11-07 01:13:11,144 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:13:11,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:11,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:13:11,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:11,149 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:13:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:13:11,425 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 01:13:11,470 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:13:11,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:13:11,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 01:13:11,471 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:13:11,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 01:13:11,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 01:13:11,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 01:13:11,474 INFO L87 Difference]: Start difference. First operand 383 states and 644 transitions. Second operand 6 states. [2018-11-07 01:13:13,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:13:13,373 INFO L93 Difference]: Finished difference Result 1195 states and 2114 transitions. [2018-11-07 01:13:13,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 01:13:13,375 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-11-07 01:13:13,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:13:13,386 INFO L225 Difference]: With dead ends: 1195 [2018-11-07 01:13:13,386 INFO L226 Difference]: Without dead ends: 818 [2018-11-07 01:13:13,392 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 01:13:13,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2018-11-07 01:13:13,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 799. [2018-11-07 01:13:13,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 799 states. [2018-11-07 01:13:13,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1290 transitions. [2018-11-07 01:13:13,449 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1290 transitions. Word has length 125 [2018-11-07 01:13:13,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:13:13,450 INFO L480 AbstractCegarLoop]: Abstraction has 799 states and 1290 transitions. [2018-11-07 01:13:13,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 01:13:13,450 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1290 transitions. [2018-11-07 01:13:13,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-07 01:13:13,460 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:13:13,460 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 01:13:13,460 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:13:13,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:13:13,461 INFO L82 PathProgramCache]: Analyzing trace with hash 837427427, now seen corresponding path program 1 times [2018-11-07 01:13:13,461 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:13:13,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:13,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:13:13,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:13,463 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:13:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:13:13,664 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:13:13,664 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:13:13,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 01:13:13,665 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:13:13,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 01:13:13,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 01:13:13,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:13:13,666 INFO L87 Difference]: Start difference. First operand 799 states and 1290 transitions. Second operand 3 states. [2018-11-07 01:13:16,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:13:16,515 INFO L93 Difference]: Finished difference Result 2271 states and 3774 transitions. [2018-11-07 01:13:16,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 01:13:16,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2018-11-07 01:13:16,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:13:16,531 INFO L225 Difference]: With dead ends: 2271 [2018-11-07 01:13:16,531 INFO L226 Difference]: Without dead ends: 1478 [2018-11-07 01:13:16,536 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 01:13:16,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2018-11-07 01:13:16,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1478. [2018-11-07 01:13:16,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1478 states. [2018-11-07 01:13:16,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2197 transitions. [2018-11-07 01:13:16,620 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2197 transitions. Word has length 126 [2018-11-07 01:13:16,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:13:16,621 INFO L480 AbstractCegarLoop]: Abstraction has 1478 states and 2197 transitions. [2018-11-07 01:13:16,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 01:13:16,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2197 transitions. [2018-11-07 01:13:16,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 01:13:16,626 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:13:16,628 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2018-11-07 01:13:16,628 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:13:16,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:13:16,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1699638498, now seen corresponding path program 1 times [2018-11-07 01:13:16,628 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:13:16,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:16,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:13:16,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:16,630 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:13:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:13:16,908 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:13:16,909 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:13:16,909 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 01:13:16,910 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 135 with the following transitions: [2018-11-07 01:13:16,912 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [45], [50], [52], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [503], [505], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-11-07 01:13:16,983 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 01:13:16,983 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 01:13:29,671 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 01:13:29,679 INFO L272 AbstractInterpreter]: Visited 105 different actions 105 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-11-07 01:13:29,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:13:29,691 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 01:13:33,861 INFO L227 lantSequenceWeakener]: Weakened 111 states. On average, predicates are now at 81.14% of their original sizes. [2018-11-07 01:13:33,861 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 01:13:37,583 INFO L415 sIntCurrentIteration]: We unified 133 AI predicates to 133 [2018-11-07 01:13:37,583 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 01:13:37,584 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 01:13:37,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-11-07 01:13:37,585 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:13:37,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-07 01:13:37,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-07 01:13:37,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-11-07 01:13:37,587 INFO L87 Difference]: Start difference. First operand 1478 states and 2197 transitions. Second operand 14 states. [2018-11-07 01:15:19,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:15:19,407 INFO L93 Difference]: Finished difference Result 3250 states and 4877 transitions. [2018-11-07 01:15:19,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 01:15:19,408 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 134 [2018-11-07 01:15:19,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:15:19,419 INFO L225 Difference]: With dead ends: 3250 [2018-11-07 01:15:19,419 INFO L226 Difference]: Without dead ends: 1778 [2018-11-07 01:15:19,425 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 146 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2018-11-07 01:15:19,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2018-11-07 01:15:19,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1625. [2018-11-07 01:15:19,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1625 states. [2018-11-07 01:15:19,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 2355 transitions. [2018-11-07 01:15:19,547 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 2355 transitions. Word has length 134 [2018-11-07 01:15:19,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:15:19,547 INFO L480 AbstractCegarLoop]: Abstraction has 1625 states and 2355 transitions. [2018-11-07 01:15:19,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-07 01:15:19,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 2355 transitions. [2018-11-07 01:15:19,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-07 01:15:19,552 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:15:19,553 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:15:19,553 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:15:19,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:15:19,554 INFO L82 PathProgramCache]: Analyzing trace with hash -999667050, now seen corresponding path program 1 times [2018-11-07 01:15:19,554 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:15:19,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:15:19,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:15:19,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:15:19,556 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:15:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:15:19,757 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 01:15:19,872 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:15:19,872 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:15:19,872 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 01:15:19,873 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 140 with the following transitions: [2018-11-07 01:15:19,873 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [45], [50], [52], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [503], [505], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-11-07 01:15:19,880 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 01:15:19,880 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 01:15:45,233 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 01:15:45,234 INFO L272 AbstractInterpreter]: Visited 108 different actions 210 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2018-11-07 01:15:45,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:15:45,244 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 01:15:49,521 INFO L227 lantSequenceWeakener]: Weakened 20 states. On average, predicates are now at 83.47% of their original sizes. [2018-11-07 01:15:49,521 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-11-07 01:17:16,789 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 01:17:16,794 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 01:17:16,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:17:16 BoogieIcfgContainer [2018-11-07 01:17:16,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 01:17:16,795 INFO L168 Benchmark]: Toolchain (without parser) took 253305.95 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -924.4 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 01:17:16,796 INFO L168 Benchmark]: CDTParser took 0.20 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 01:17:16,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 792.34 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 01:17:16,798 INFO L168 Benchmark]: Boogie Procedure Inliner took 143.96 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 716.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -791.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2018-11-07 01:17:16,799 INFO L168 Benchmark]: Boogie Preprocessor took 136.76 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 01:17:16,799 INFO L168 Benchmark]: RCFGBuilder took 3364.96 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: 105.3 MB). Peak memory consumption was 105.3 MB. Max. memory is 7.1 GB. [2018-11-07 01:17:16,800 INFO L168 Benchmark]: TraceAbstraction took 248861.71 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -280.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 01:17:16,805 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 792.34 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 143.96 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 716.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -791.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.76 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3364.96 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: 105.3 MB). Peak memory consumption was 105.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 248861.71 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -280.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 463]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 463). Cancelled while BasicCegarLoop was analyzing trace of length 140 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 248.7s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 108.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 890 SDtfs, 2161 SDslu, 689 SDs, 0 SdLazy, 2569 SolverSat, 709 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 62.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 165 GetRequests, 128 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1625occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 38.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9937589560817373 AbsIntWeakeningRatio, 0.25092250922509224 AbsIntAvgWeakeningVarsNumRemoved, 540.9889298892989 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 176 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 489 NumberOfCodeBlocks, 489 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 485 ConstructedInterpolants, 0 QuantifiedInterpolants, 153872 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 62/64 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown