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/Problem15_label41_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:28:37,654 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:28:37,657 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:28:37,671 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:28:37,671 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:28:37,672 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:28:37,673 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:28:37,676 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:28:37,679 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:28:37,684 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:28:37,685 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:28:37,686 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:28:37,687 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:28:37,691 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:28:37,693 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:28:37,694 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:28:37,695 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:28:37,699 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:28:37,702 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:28:37,704 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:28:37,705 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:28:37,708 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:28:37,713 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:28:37,728 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:28:37,728 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:28:37,729 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:28:37,730 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:28:37,730 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 00:28:37,754 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:28:37,754 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:28:37,755 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:28:37,756 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:28:37,757 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:28:37,757 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:28:37,757 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:28:37,758 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:28:37,758 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:28:37,758 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:28:37,758 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:28:37,758 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:28:37,759 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:28:37,759 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:28:37,759 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:28:37,761 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:28:37,761 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:28:37,761 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:28:37,761 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:28:37,761 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:28:37,762 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:28:37,762 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:28:37,762 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:28:37,762 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:28:37,762 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:28:37,763 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:28:37,764 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:28:37,764 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:28:37,764 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:28:37,765 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:28:37,765 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:28:37,765 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:28:37,765 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:28:37,765 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:28:37,826 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:28:37,839 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:28:37,842 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:28:37,844 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:28:37,845 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:28:37,845 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label41_false-unreach-call.c [2018-11-07 00:28:37,906 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12d409fc0/9f0ab81e4ffd46caa06523e1c4ddec1c/FLAG4a06aea28 [2018-11-07 00:28:38,601 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:28:38,602 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label41_false-unreach-call.c [2018-11-07 00:28:38,625 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12d409fc0/9f0ab81e4ffd46caa06523e1c4ddec1c/FLAG4a06aea28 [2018-11-07 00:28:38,643 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12d409fc0/9f0ab81e4ffd46caa06523e1c4ddec1c [2018-11-07 00:28:38,654 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:28:38,656 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:28:38,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:28:38,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:28:38,661 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:28:38,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:28:38" (1/1) ... [2018-11-07 00:28:38,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c7aa46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:38, skipping insertion in model container [2018-11-07 00:28:38,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:28:38" (1/1) ... [2018-11-07 00:28:38,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:28:38,776 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:28:39,718 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:28:39,723 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:28:40,047 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:28:40,071 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:28:40,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:40 WrapperNode [2018-11-07 00:28:40,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:28:40,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:28:40,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:28:40,073 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:28:40,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:40" (1/1) ... [2018-11-07 00:28:40,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:40" (1/1) ... [2018-11-07 00:28:40,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:28:40,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:28:40,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:28:40,301 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:28:40,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:40" (1/1) ... [2018-11-07 00:28:40,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:40" (1/1) ... [2018-11-07 00:28:40,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:40" (1/1) ... [2018-11-07 00:28:40,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:40" (1/1) ... [2018-11-07 00:28:40,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:40" (1/1) ... [2018-11-07 00:28:40,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:40" (1/1) ... [2018-11-07 00:28:40,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:40" (1/1) ... [2018-11-07 00:28:40,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:28:40,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:28:40,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:28:40,472 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:28:40,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:40" (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 00:28:40,544 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:28:40,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:28:40,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:28:40,545 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:28:40,545 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:28:40,545 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:28:40,545 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:28:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:28:40,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:28:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:28:40,546 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:28:46,922 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:28:46,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:28:46 BoogieIcfgContainer [2018-11-07 00:28:46,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:28:46,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:28:46,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:28:46,928 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:28:46,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:28:38" (1/3) ... [2018-11-07 00:28:46,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d948b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:28:46, skipping insertion in model container [2018-11-07 00:28:46,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:40" (2/3) ... [2018-11-07 00:28:46,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d948b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:28:46, skipping insertion in model container [2018-11-07 00:28:46,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:28:46" (3/3) ... [2018-11-07 00:28:46,931 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label41_false-unreach-call.c [2018-11-07 00:28:46,942 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:28:46,952 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:28:46,969 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:28:47,013 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:28:47,013 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:28:47,014 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:28:47,014 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:28:47,014 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:28:47,014 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:28:47,014 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:28:47,015 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:28:47,049 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 00:28:47,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-07 00:28:47,060 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:28:47,061 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] [2018-11-07 00:28:47,064 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:28:47,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:28:47,072 INFO L82 PathProgramCache]: Analyzing trace with hash 2001404332, now seen corresponding path program 1 times [2018-11-07 00:28:47,075 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:28:47,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:28:47,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:28:47,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:28:47,134 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:28:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:28:47,532 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 00:28:47,552 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 00:28:47,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:28:47,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:28:47,557 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:28:47,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:28:47,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:28:47,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:28:47,586 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 00:28:54,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:28:54,498 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-11-07 00:28:54,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:28:54,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-11-07 00:28:54,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:28:54,544 INFO L225 Difference]: With dead ends: 1550 [2018-11-07 00:28:54,544 INFO L226 Difference]: Without dead ends: 1106 [2018-11-07 00:28:54,555 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:28:54,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-11-07 00:28:54,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-11-07 00:28:54,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-11-07 00:28:54,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-11-07 00:28:54,708 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 32 [2018-11-07 00:28:54,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:28:54,709 INFO L480 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-11-07 00:28:54,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:28:54,709 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-11-07 00:28:54,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-11-07 00:28:54,717 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:28:54,717 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:28:54,717 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:28:54,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:28:54,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1645629282, now seen corresponding path program 1 times [2018-11-07 00:28:54,719 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:28:54,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:28:54,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:28:54,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:28:54,721 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:28:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:28:55,070 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:28:55,070 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:28:55,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:28:55,070 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:28:55,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:28:55,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:28:55,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:28:55,073 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 5 states. [2018-11-07 00:29:00,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:29:00,842 INFO L93 Difference]: Finished difference Result 2248 states and 3762 transitions. [2018-11-07 00:29:00,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:29:00,852 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2018-11-07 00:29:00,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:29:00,866 INFO L225 Difference]: With dead ends: 2248 [2018-11-07 00:29:00,867 INFO L226 Difference]: Without dead ends: 1492 [2018-11-07 00:29:00,871 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:29:00,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2018-11-07 00:29:00,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1457. [2018-11-07 00:29:00,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-11-07 00:29:00,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-11-07 00:29:00,949 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 105 [2018-11-07 00:29:00,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:29:00,949 INFO L480 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-11-07 00:29:00,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:29:00,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-11-07 00:29:00,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-07 00:29:00,956 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:29:00,957 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:29:00,957 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:29:00,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:29:00,957 INFO L82 PathProgramCache]: Analyzing trace with hash 276528210, now seen corresponding path program 1 times [2018-11-07 00:29:00,958 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:29:00,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:29:00,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:29:00,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:29:00,959 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:29:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:29:01,155 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:29:01,156 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:29:01,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:29:01,156 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:29:01,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:29:01,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:29:01,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:29:01,157 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 4 states. [2018-11-07 00:29:06,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:29:06,353 INFO L93 Difference]: Finished difference Result 5392 states and 8275 transitions. [2018-11-07 00:29:06,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:29:06,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2018-11-07 00:29:06,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:29:06,396 INFO L225 Difference]: With dead ends: 5392 [2018-11-07 00:29:06,397 INFO L226 Difference]: Without dead ends: 3941 [2018-11-07 00:29:06,411 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:29:06,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2018-11-07 00:29:06,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3939. [2018-11-07 00:29:06,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3939 states. [2018-11-07 00:29:06,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 5428 transitions. [2018-11-07 00:29:06,541 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 5428 transitions. Word has length 113 [2018-11-07 00:29:06,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:29:06,542 INFO L480 AbstractCegarLoop]: Abstraction has 3939 states and 5428 transitions. [2018-11-07 00:29:06,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:29:06,542 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 5428 transitions. [2018-11-07 00:29:06,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-11-07 00:29:06,552 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:29:06,552 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 00:29:06,553 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:29:06,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:29:06,553 INFO L82 PathProgramCache]: Analyzing trace with hash 569542707, now seen corresponding path program 1 times [2018-11-07 00:29:06,553 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:29:06,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:29:06,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:29:06,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:29:06,555 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:29:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:29:06,863 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:29:06,932 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 50 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:29:06,933 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:29:06,933 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:29:06,934 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 190 with the following transitions: [2018-11-07 00:29:06,936 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [229], [231], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [633], [638], [640], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 00:29:07,010 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:29:07,010 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:29:08,961 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:29:08,963 INFO L272 AbstractInterpreter]: Visited 90 different actions 90 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 00:29:08,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:29:08,975 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:29:10,884 INFO L227 lantSequenceWeakener]: Weakened 179 states. On average, predicates are now at 77.74% of their original sizes. [2018-11-07 00:29:10,884 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:29:11,268 INFO L415 sIntCurrentIteration]: We unified 188 AI predicates to 188 [2018-11-07 00:29:11,269 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:29:11,270 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:29:11,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 00:29:11,270 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:29:11,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:29:11,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:29:11,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:29:11,272 INFO L87 Difference]: Start difference. First operand 3939 states and 5428 transitions. Second operand 7 states. [2018-11-07 00:29:13,640 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:30:30,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:30:30,798 INFO L93 Difference]: Finished difference Result 8182 states and 11238 transitions. [2018-11-07 00:30:30,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:30:30,799 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2018-11-07 00:30:30,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:30:30,821 INFO L225 Difference]: With dead ends: 8182 [2018-11-07 00:30:30,821 INFO L226 Difference]: Without dead ends: 4249 [2018-11-07 00:30:30,838 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:30:30,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4249 states. [2018-11-07 00:30:30,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4249 to 4247. [2018-11-07 00:30:30,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4247 states. [2018-11-07 00:30:30,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4247 states to 4247 states and 5745 transitions. [2018-11-07 00:30:30,955 INFO L78 Accepts]: Start accepts. Automaton has 4247 states and 5745 transitions. Word has length 189 [2018-11-07 00:30:30,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:30:30,956 INFO L480 AbstractCegarLoop]: Abstraction has 4247 states and 5745 transitions. [2018-11-07 00:30:30,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 00:30:30,956 INFO L276 IsEmpty]: Start isEmpty. Operand 4247 states and 5745 transitions. [2018-11-07 00:30:30,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-11-07 00:30:30,964 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:30:30,964 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:30:30,965 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:30:30,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:30:30,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1745077526, now seen corresponding path program 1 times [2018-11-07 00:30:30,965 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:30:30,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:30:30,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:30:30,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:30:30,967 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:30:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:30:31,322 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:30:31,544 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 81 proven. 201 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-07 00:30:31,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:30:31,545 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:30:31,545 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 286 with the following transitions: [2018-11-07 00:30:31,545 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [229], [231], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 00:30:31,551 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:30:31,551 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:30:32,769 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:30:38,185 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:30:38,186 INFO L272 AbstractInterpreter]: Visited 105 different actions 302 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 00:30:38,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:30:38,202 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:30:40,882 INFO L227 lantSequenceWeakener]: Weakened 77 states. On average, predicates are now at 78.39% of their original sizes. [2018-11-07 00:30:40,882 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-11-07 00:32:34,483 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:32:34,489 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:32:34,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:32:34 BoogieIcfgContainer [2018-11-07 00:32:34,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:32:34,490 INFO L168 Benchmark]: Toolchain (without parser) took 235835.40 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -935.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 00:32:34,492 INFO L168 Benchmark]: CDTParser took 0.25 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 00:32:34,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1415.37 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-11-07 00:32:34,493 INFO L168 Benchmark]: Boogie Procedure Inliner took 227.75 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -883.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 00:32:34,494 INFO L168 Benchmark]: Boogie Preprocessor took 170.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-11-07 00:32:34,495 INFO L168 Benchmark]: RCFGBuilder took 6452.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 300.9 MB). Peak memory consumption was 300.9 MB. Max. memory is 7.1 GB. [2018-11-07 00:32:34,496 INFO L168 Benchmark]: TraceAbstraction took 227565.08 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 2.3 GB in the end (delta: -472.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 00:32:34,501 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 1415.37 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 227.75 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -883.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 170.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6452.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 300.9 MB). Peak memory consumption was 300.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227565.08 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 2.3 GB in the end (delta: -472.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 82). Cancelled while BasicCegarLoop was analyzing trace of length 286 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 227.4s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 97.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1499 SDtfs, 3474 SDslu, 1019 SDs, 0 SdLazy, 6905 SolverSat, 1707 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 70.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 209 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4247occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9950066015720951 AbsIntWeakeningRatio, 0.1271186440677966 AbsIntAvgWeakeningVarsNumRemoved, 527.3580508474577 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 383 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 439 NumberOfCodeBlocks, 439 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 435 ConstructedInterpolants, 0 QuantifiedInterpolants, 189753 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 105/170 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown